Thermal insulation materials generally refer toThermal coefficientMaterial less than or equal to 0.12.Thermal insulation materials are developing very fast. Using good thermal insulation technology and materials in industry and buildings can often achieve twice the result with half the effort.Every ton used in the buildingMineral woolThermal insulation products can save one ton of oil a year.
Chinese name
Thermal insulation material
Foreign name
thermal insulation materials
Category
Material Science
Interpretation
The thermal conductivity is less than or equal to 0.12Material Science
Traditional insulationThermal insulation materialTo improve the gas phaseVoidsAnd mainly reduce the thermal conductivity and conductivity.Fiber insulation materialsUse environmentTo makeConvective heat transferAnd radiation heat transfer rise, must have a thicker coating;ProfileInorganic insulation materialsThe assembly construction shall be carried out, and there are many defects, such as many joints, damage to beauty, poor waterproof, short service life, etc.For this reason, people have been looking for and studying a kind of thermal insulation materialnew materials 。
In the 1990s, the United StatesAerospaceNASAScientific researchersA new space thermal insulation reflective ceramic layer (Therma Cover) developed and used to solve the problem of heat transfer control of space vehicles. The material is composed of some small ceramic particles suspended in inert latex, which has a highreflectivity, high emissivity, low thermal conductivity, lowHeat storage coefficientIt has excellent thermal insulation and reflection function.This kind of high-tech material has been popularized and applied to people from the aerospace field abroad, used in buildings and industrial facilities, and has been exported to China for use in some large-scale industrial facilities.However, the disadvantage is that the high price of this material, which is 20 dollars/kg, makes many industries in China look at things and cannot bear it.As a result, a wave of research and development of new materials for heat insulation and heat preservation has been quietly set off in China, and it has taken the lead in developing a new space reflective heat insulation coating with high efficiency, thin layer, heat insulation, energy saving, decoration and waterproofing in one among its domestic peers.The coating has excellent heat resistance, weather resistance, corrosion resistance and waterproof performanceSilicone acrylic emulsionAnd waterFluorocarbon emulsionbyFilm-forming substance, using extremely fine hollow ceramic particles known as the material of the space age as the fillerceramsiteMultiple combination arrangementfilmIs formed, which can reduce the visible light andNear infrared regionAt the same time, an air microporous layer with extremely low thermal conductivity is introduced into the film to isolate the heat transfer.In this way, radiation heat transfer and convection heat transfer can be effectively reduced by strengthening the significant resistance of reflected solar heat and convection transfer, thus reducing the heat on the surface of the objectEquilibrium temperatureIt can reduce the roof temperature by up to 20 ℃ and the indoor temperature by 5~10 ℃.The thermal insulation grade of the product reaches R-33.3, the thermal reflectance is 89%, and the thermal conductivity is 0.030W/m.K.
Today, the worldinsulation material It is developing towards the direction of high efficiency, energy saving, thin layer, thermal insulation, waterproof and external protection integration, and developing new thermal insulation materials and structural insulationEnergy saving technologyAt the same time, more emphasis is placed on targeted use of thermal insulationThermal insulation material, design and construction according to standards and specifications, and strive to improve insulation efficiency andcost reduction。Thin layers have been developed at home and abroadThermal insulation coatingMany companies in the United States have produced this kind of insulating ceramic coating, such as SPM Thermo Shield, Ceramic Cover and JH. Therma Cover and other products of International.This space insulating ceramic layer is based onAmerican AirlinesAnd NASANASAcontrolspace shuttleheat conductionIt is suitable for high-pressure spraying, pollution-free, and has good performance of heat radiation resistance, thin layer heat insulation, waterproof and anti-corrosion.This material has turned to general industrial and civil thermal insulation.However, many domestic enterprises are developing such materials, such as thin layer thermal insulation reflective coatings, solar heatReflective heat insulation coating, water-based reflective heat insulation coating, heat insulation sunscreen coating, ceramic heat insulation coating, etc.Mainly usingWeatherabilityGoodWater resistanceStrongAging resistanceStrong, strongCohesionAnd elastic, and can be well miscible with insulation filler and reflective fillerFilm-forming materialThe filler with light weight, hollow, high temperature resistance, high thermal resistance, good reflectivity and radiation is selected, and the refractive coefficient is highSurface finishHigh, thermal reflectivity andEmissivityHigh superfine powder is suitable for use as reflective filler, and lowRadiant heat transferLayer, which can effectively block heat transfer.This thin layer of thermal insulation reflective coating is compatible withporous material The composite coating can be used in different places such as buildings, vehicles and ships, petrochemical oil tank equipment, grain depots, cold storage, containers, pipelines, etc.
Material characteristics
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Thermal insulation materialindustrial equipment Thermal insulation measures and materials shall be adoptedAerogelFirst applied toNASADevelopedSpace suitInsulation liningOn.It has low thermal conductivity, low densityflexibilityHigh, fireproof and waterproof.Its thermal conductivity at room temperature is 0.018W/(K · m), it is absolutely waterproof, and its thermal insulation performance isTraditional materials3~8 times.
The thermal insulation lining has the characteristics of low thermal conductivity, low density, high flexibility, fire prevention and waterproof.
Light weight, generally 10 － 96kg/m3, felt below 20kg/m3, medium hard plate 24 － 48kg/m3, hard plate 48 － 96kg/m3, including 48kg/m³Can be doneceiling，softening pointIt is about 500 ° C, insulation is 300 ° C, and the consumption in America is large, k=0.9.
Calcium silicate thermal insulation products were successfully developed in the 1970s, withcompressive strengthHigh, small thermal conductivity, convenient construction, and reusablePower systemIt is widely used.
Most of them are produced in small workshops in China. Later, four production lines were introduced from the United States,Process technologyAdvanced, instant and quick throwingFibroblastDry methodacupunctureFelt, stable quality,TolerableTemperature: 800-1250 ° C.
Features: acidity derivative above 2.0, high temperature resistance, generalChemical pipelineMore than 1000 ° C, this material must be used.The solution temperature is about 2000 ° C.
The main products arePolystyrene foamandpolyurethaneFoamed plastic, but there are problems in the application in the construction field.It is mainly used for steel wire mesh sandwich plate,Color steel plateComposite sandwichboard, although there are certain restrictions, it has developed rapidly with theBuilding fire preventionThe requirements for materials are becoming more and more strict, which puts forward new topics for the application of this material.
The thermal insulation material can collect excess heat and release it in a timely and stable manner. The gradient change is small, and the loss can be effectively reduced. The room temperature can reach the equilibrium and the winter thermal insulation can play a balance role.In the decoration of new buildings and reconstruction of old buildings, the wall cracks, condensation, mildewPeelingAnd other inherent shortcomings;Moreover, it is safe and reliable to bond with the base as a whole, with good randomness and no cavity, so as to avoidNegative wind pressureTearing and shedding.Effectively overcome the side ribs after plate splicingMale cornerThe problem of warped and deformed face brick falling off.The organic matter in the material andMain wallBasement existentFree acidReact to form compounds, penetrate into the micropores of the main wall, form a community, and ensureDry stateCohesiveness, and improve the wet bonding hedge ratio, with excellent cohesiveness.SelectionFloating bead、Brucite fiber(tubular fiber) and other raw materials, which form closedHydrophobicityMicropore cavity structure, asPhase change materialThe carrier can ensure the long-term practicability of phase change materials.
2. Organic thermal insulation materials have light weightMachinabilityGood, high density, good thermal insulation effect, but the disadvantages are: poor aging resistance, large deformation coefficient, poor stability, poor safety, easy combustion, poor ecological and environmental protection, great construction difficultyengineering cost High, its resources are limited, and it is difficult to recycle.
Since the Opinions of the State Council on Strengthening and Reforming Consumption Work (GF [2011] No. 46) issued by the State Council,polyurethane(referred to as PU) insulation materialDomestic construction marketThere has been an upward trend.andFire Department of Ministry of Public SecuritySince the announcement of No. 350 in 2012 and the official cancellation of No. 65 Document, the domestic insulation material market has undergone significant changes: Grade AInorganic insulation materialsThe market drops sharply, organic thermal insulation materials rise significantly, PUBuilding insulation materialsThe production capacity, output and market all showed an unprecedented growth momentum.Grade B1Polyurethane spray insulationMaterials, PU inorganic composite plates and structural flame retardant PU insulation materials will have great development space.
PU building thermal insulation materials should constantly strengthen quality stability, constantly improve technology, and constantly adhere toIndustry self-disciplineTo maintain a sustained, stable and healthy development momentum.In this paper, the application status of PU thermal insulation materials in the field of building energy conservation andDevelopment trendGive an introduction for peer reference.
The national and local policies issued in 2012 paved the way for the promotion and application of PU building insulation materials.
Document No. 1.65 is the promotion and application of PU thermal insulation materials to release shackles
On December 3, 2012, the Fire Department of the Ministry of Public Security issued the Notice on Matters Related to the Supervision and Management of Fire Protection of External Thermal Insulation Materials for Civil Buildings, namely the Announcement 350 of the Fire Department of the Ministry of Public Security in 2012, and decided not to implement the Document 65 issued on March 14, 2011 from now on.
After No. 65 Document was issued, PU was restricted in policyExternal wall insulation materialThe application in the building energy conservation market is extremely unfavorable to the promotion of PU building insulation materials.The termination of No. 65 document indicates thatExternal wall insulationThe regulations that must use materials with a fire rating of Class A must be formally withdrawn.Document No. 350 means thatsecurity policy At the level, it is clear that PU external wall insulation materials are allowed to be used in the building external wall insulation system in the future, thus ushering in a hard won development opportunity for PU insulation materials.
On March 3, 2012,Beijing Municipal Public Security Bureau、BeijingThe Municipal Commission of Housing and Urban Rural Development and the Beijing Municipal Commission of Planning jointly issued theOld communityApplication of external thermal insulation materials and fire protection in comprehensive reconstruction projectsecurity management Notice of work.
In this document, the strengthening of buildingsExternal insulationThe requirements for the use and management of materials stipulate that the external thermal insulation of buildings in the comprehensive reconstruction of old residential quarters in Beijing should becombustion performanceClass A thermal insulation material and "composite Class AthermosettingThermal insulation materials ".According to this document, for existing building reconstruction projects in Beijing, it is allowed to use Class A and composite Class A thermosetting insulation materials.
The fire resistance and flame retardancy of "Class A composite thermosetting materials" are equivalent to Class A inorganic materialsFlame retardant materials。According to this provision, compositeThermoplasticityThe materials can not be used even if they reach the flame retardant grade A.This regulation is based on the experience of several times in Chinafire disasterThe profound lesson of.
2. The production of rock wool is harmful to human health, and workers will not be willing to constructLong cycleIt takes about 2 years from the establishment of the factory to the production.domestic marketRockwoolSupplyIt also fails to meet the requirements for use.
3. The weight of expanded perlite is large,Water absorptionHigh.
4. The thermal insulation performance of micro nano thermal insulation board is 3-5 times that of traditional thermal insulation materials, which is commonly used inHigh temperature environmentBut the price is more expensive.
6. In March 2011, the Ministry of Public Security stipulated that Class A incombustible materials should be used as thermal insulation systems, and the future trend can be relaxed to Class B1 at mostFireproof materialThe development prospect of inorganic thermal insulation materials is still great.
7. Expanded perlite has a wide range of raw materials,Production facilitiesIt is simple and harmless to human body. I believe it can be used as the main material in the future.
2. Application of polyurethane in insulation market
Rigid vesiclePolyurethane is really outside the buildingEnclosureIt should have started around 2003.From 2003 to 2005, rigid foam polyurethane was applied in the integrated system of roof waterproof and thermal insulation of buildings in the form of spraying.During this period, EPS and XPS accounted for most of themarket share, rigid foam polyurethane in building exterior wall thermal insulation energy savingMarket shareOnly about 1%.
From 2005 to 2007, hard foam polyurethane developed a hard foam polyurethane composite board, which makes up for some problems existing in spraying hard foam polyurethane, such as foam, surfaceCrustsSmall problems such as unevenness.However, few enterprises in the industry can produce rigid foam polyurethane composite board.Driven by only a few enterprises in the industry, the first national standard of rigid foam polyurethane industryGB50404-2007《Technical code for rigid polyurethane insulation and waterproofing engineering》It was successfully prepared. The preparation of the standard made polyurethaneMarketingThere has been considerable development in this area. Many regional construction committees dare to accept this product and are willing to promote and use it locally.So far, the rigid foam polyurethaneBuilding insulationThe market share in the field of energy conservation has also increased to about 3%, and is increasing year by year.
From 2008 to 2010, external insulation andRoof insulationMedium, due to rigid polyurethaneComposite platePrice and many other factors, the market share did not reach the expected share, and most of the insulation materials are stillPolystyrene plasticProducts.But in various countriesGrain depot, Bird's Nest and other major national projects,Polyurethane rigid foam sprayingIts market share is relatively high.
In 2009CCTVThe fire followed Shanghai in November 2010Jiaozhou RoadA fire broke out in the apartment building.HoweverRigid foam polyurethane sprayingThe material is inferior product of flammable polyurethane used.This highlights the enterprises in the industryconscientiousnessLoss, disordercompetition mechanismThe situation is very serious. This fire has a great impact on polyurethane.
After the CCTV fire, the Ministry of Public Security and the Ministry of Housing and Urban Rural Development jointly issued《Interim Provisions for Fire Protection of External Thermal Insulation System and Exterior Wall Decoration of Civil Buildings》(GTZ [2009] No. 46), the State Council issued《Opinions of the State Council on Strengthening and Improving Fire Control Work》(Guo Fa [2011] No. 46), the public security fire department has also increased the awareness ofNew ProjectOfDrawing reviewAnd inspection strengthUsageAt this moment, based on many years of experience, we jointly proposed the concept of composite A grade, let more people know the high quality fire and combustion performance of rigid foam polyurethane, and reversed the situation of rigid foam polyurethane in the insulation industry. We successfully expanded the occupancy of rigid foam polyurethane in the insulation market in 2012, reaching about 10%,The utilization rate of rigid foam polyurethane throughout the country has shown a rapid growth trend.
Classification by material shape
According to the different unit weight, composition, scope, shape andConstruction methodClassify.
one
According to different unit weights, it can be divided into three categories: heavy weight 400~600kg/m3, light weight 150~350kg/m3 and ultra light weight less than 150kg/m3.
two
According to different components, it can be divided into organic and inorganic.
three
According to the different range of applicable temperature, it can be divided into three categories: high temperature (above 700 ℃), medium temperature (100~700 ℃) and low temperature (below 100 ℃)..
four
According to different shapes, it can be divided into powder, granular, fibrous, massive, etc., and it can also be divided into porous, mineral fiber, metal, etc.
five
According to different construction methods, it can be divided into wet wiping, filling, binding, wrapping, etc.
Application on buildings
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Wall insulation
It refers to a class of thermal insulation materials used for building walls, which can be divided into external wall thermal insulation materials according to the use location,Interior wallThermal insulation materials, roof insulation materials;According to the internal composition of thermal insulation materials, they can be divided into inorganic thermal insulation materials and organic thermal insulation materials.
3. The waterproof layer is protected to avoidThermal stress, ultraviolet ray and other factors damage the waterproof layer;
4. Excellent moisture resistance makes it have long-term stable thermal insulation performance andcompressive strength；
5. It can maintain long-term thermal insulation function,persistenceIt is equivalent to the service life of the building;
6. Hydrophobic insulation materials can be usedElectric heating wireOr other conventional tools for cutting and processing, and the construction is fast and simple;
7. The roof maintenance will not damage materials in the future, which is convenient and simple;
8. High efficiency thermal insulation material is used, which conforms to building energy conservationtechnological development Direction.
Slurry insulation
SlurryThermal insulation materials are mainly used for internal insulation of external walls, as well as partition walls andHousehold wallIf the performance allows, it can also be used for external wall insulation.There are two types of slurry materials, one is the curing type, which mainly consists of cementitious materials, and the other is the drying type, which mainly consists of water evaporation.Its main components aresepiolite (polystyrene particles)Mineral fibreThe lightweight thermal insulation material is made of a variety of materials mainly silicate through a certain production process.Its products can be divided into two types: powder and paste (paste), but paste is applied to the base course when used.Pay attention to the following test data when using:
（1） For internal insulation and partition: thermal conductivity, apparent density, volume shrinkageBond strength、Softening coefficient, asbestos content, water vapor permeability coefficient, water absorptionOxygen indexEtc.
（2） Thermal conductivity, apparent density, volume shrinkage, bonding strengthHydrophobicRate, asbestos content, softening coefficient, water absorption, fire resistance, etc., and the thermal insulation of the system shall also be considered.
Both the board thermal insulation material and the slurry thermal insulation material have their own characteristics. As long as they adapt to their characteristics, they can maximize their advantages and play a multiplier role in building energy conservation.
Main varieties
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Soft porcelain insulation
Soft porcelain insulation material
Soft porcelainThermal insulation materials are made of natural soilStone powderetc.InorganicAs a raw material, it is formed under photochemical isomerization and curve temperature after classified mixing and composite modification.Earthquake resistance, crack resistance and resistanceFreeze-thaw, anti fouling and self-cleaning performance are excellent.
Appearance: at least 95% of the main areas of materials are free of obvious defects (damage, blistering, separation of upper and lower layers);
Aluminum silicate insulation materialAlso known as (aluminum silicate composite insulation coating), it is a new type of environmental protection wall insulation material.Conform to the countryBuilding Standards, is numerousestate agent, Engineeringcontractor, DecorationEngineering contractorRequired materials for.The aluminum silicate composite thermal insulation coating takes natural solder as the main raw material, and adds a certain amount of inorganic auxiliary materialsCompound machiningA new type of green inorganic single component packaging dry powder thermal insulation coating is made. Before construction, the thermal insulation coating is mixed with water and scraped on the surface of the wall to be insulated. After drying, it can form a microporous network with high strength structure for thermal insulationThermal insulation。
Aluminum silicate composite insulation coating is new greeninorganic coatingIt is packed with single component materials, non-toxic, harmless, and excellentSound absorptionHigh temperature resistance, water resistance and frost resistanceShrinkageLow, overall seamless, noCold bridge. Formation of thermal bridge: stable and reliable quality, crack resistance, good seismic performance, strong resistance to negative wind pressure, light unit weight, good thermal insulation performance, good workability, strong securitySurface courseNo hollowing, no sagging, noSlungThe construction consumption is reduced and the combustion performance is Class A incombustible material: the temperature is within the range of - 40-800 ℃, the insulation layer is not cracked, does not fall off, does not burn, and is acid, alkali, and oil resistant.It makes up for the problems existing in the traditional wall insulation coatingWater absorptionLarge, easy to agingVolume shrinkageLarge, easy to cause low product strength in the later period and hollow cracking, which will reduce the performance of insulation coating, and at the same time make up forPolystyrene granule thermal insulation coatingInflammable, poor fire resistance, high temperatureHarmful gasAnd low weather resistance, large elasticity and other defects.Aluminum silicate composite insulation coating is one of the wall insulation materialssafety factorThe thermal insulation coating with the highest comprehensive performance and the best construction performance can be applied with the best economic thickness according to the temperature of different media, and its cost performance is much better than that of materials with the same performance.
phenolic aldehydeFoam material is high molecular organic hardaluminum foilFoam products, is byThermosetting phenolic resinIt is foamed. It is light, fireproof, non burning in case of open fire, smokeless, non-toxic, and free of dripping. Its use temperature ranges from - 196 ℃ to+200 ℃Low temperature environmentNo shrinkage and embrittlement at the bottom, it is HVACRefrigeration engineeringIdeal thermal insulation material due to phenolic foamObturation ratioHigh, low thermal conductivity, good thermal insulation performance, andWater resistanceandsteamPermeabilityIt is an ideal heat preservation and energy saving material.Because phenolic hasbenzene ringStructure, so the size is stable, and the change rate is less than 1%.Andchemical compositionStable, anti-corrosion and anti-aging, especially resistant to organic solutionsstrong acid、weak alkaliCorrosion.stayProduction processNot used in foamingFreondofoaming agentInternational complianceEnvironmental standards, and itsmolecular structureIt contains hydrogen, oxygencarbonElement, during high-temperature decomposition, the spilled gas is non-toxic, odorless, harmless to human body and environment, and conforms to the national standardGreen and environmental protectionrequirement.Therefore, the phenolic super composite board is the most ideal green thermal insulation material for fire prevention, heat insulation, energy conservation and beauty.
Phenolic foam, known as the "king of thermal insulation materials", is a new generation of thermal insulation and fire protectionSound insulation material。Phenolic in developed countriesFoaming materialIt has developed rapidly and has been widely used in construction, national defense, foreign trade, storage, energy and other fields.Sound insulation used in the construction industry in the United StatesFoam plasticAmong them, phenolic materials have accounted for 40%;Japan has also established a phenolic foam popularization association to promote this new material.
Phenolic foam is also internationally recognized as the most promising new thermal insulation material in the ranks of buildings.Because this new material and the common polymer resin rely on the addition ofFlame retardantThe materials obtained are essentially different. They do not burn or melt in fire, nor emit toxic smoke. They have the advantages of light weight, non-toxic, non corrosive, heat preservation, energy conservation, sound insulation, low price, and do not need Freon foaming, and have no environmental pollutionProcessabilityGood, easy to construct, and its comprehensive performance is incomparable with various thermal insulation materials.It is generally used in hotels, apartments, hospitals and other senior andHigh rise buildingcentral air-conditioningThermal insulation of the system (most of the central air conditioning systems in senior buildings in Hong Kong have changed to phenolic foam materials).For cold storage and cold storagepetrochemical industryetc.Industrial pipelineAnd equipment insulation, building partition, external wall composite board, suspended ceilingAcoustic panelAnd other undisputed comprehensive advantages have solved the problem that the fire resistance of other organic materials is not ideal, andInorganic materialsHigh water absorption, easy to "dewing", itchy skin during construction, etcair conditioning system, the third generation best thermal insulation material for various electrical appliances.
Expanded and vitrified microsphere
Sample picture
Inorganic thermal insulation mortarIt is a new type of thermal insulation and energy-saving mortar material used for painting the internal and external walls of buildings, which uses inorganic lightweight thermal insulation particles aslightweight aggregate, plusCementitious materialAnti crack additives and othersFillerIsocomponentDry mortar。It has the characteristics of energy conservation and waste utilization, thermal insulation, fire prevention and antifreeze, aging resistance, low price, etcmarket demand。
Product status: uniform gray powder.Product features: 1. Selected imports, renewable and decentralizedColloidal powder、Inorganic cementitious materialIt is premixed and dry mixed with high-quality orthopedics and additives with functions of water retention, increase, animal transformation, crack resistance, etc.2. It has good adhesion to a variety of insulation materials.3. Good flexibility, water resistanceWeatherability。 4. Add water directly on site and use it for easy operation.5. Safety and environmental protection, conforming toindustrial policy。
Rubber powder polystyrene particles
EPGRubber powder polystyrene particlesThe thermal insulation system uses premixed dry mixed mortar as the main cementitious material, adding appropriateVBO Fiber And various additives topolystyreneFoam particles are light aggregate, as perProportional configurationIt can be stirred evenly on the site, and the external and internal surfaces of the external wall can be used, which is convenient for construction and has good thermal insulation effect.
This material has low thermal conductivity, good thermal insulation and anti condensation performance, high compressive strength, and strong adhesion,adhesionStrong, freeze-thaw resistantDrying shrinkageAnd the linear rate of water invasion is small, and it is not easy to hollowing and cracking.
The system adopts on-site molding and plastering technology, with good material compatibility, easy operation, high construction efficiency, and good overall performance after material molding.AvoidedBlockThe heat preservation and joint are easy to crack, and there is no need to cut boards at various corners for treatment. The construction process is simple.
EPS expansionPolystyrene boardThin plastered exterior wall external insulation is made of polystyrene foam plastic board (hereinafter referred to asBenzene plate）As the external thermal insulation material of buildings, whenMain buildingAfter the completion of the structure, the benzene plate shall be usedBonding mortarPaste the wall as required.If there are special reinforcement requirements, plastic expansion screws can be used for anchoring.Then apply it on the surface of benzene platePolymer cement mortar, in which alkali resistant plastic coated glass fiber mesh cloth is pressed to formAnti crack mortarProtective layer, and finallyputty And paint decorative surface course (if the decorative surface course is ceramic tile, it should be used insteadGalvanized steel wire meshAnd special tile adhesivemortar）。
EPSExternal thermal insulation system of expanded polystyrene board thin plastering external wallIt has excellent thermal insulation performance, good waterproof performance andwind pressureImpact resistance, which can effectively solve the problems of wall cracking and water leakage.bookSystem technologyMature, easy to construct, cost-effectiveEurope and AmericaDeveloped countries and coastal developed areas have been widely usedReal estate developersThermal insulation system is preferred by thermal insulation and energy-saving building design and construction units.With the further development of building energy conservation, this system will become the mainstream product in the market.
CorrespondingStandard procedures: Expanded polystyrene board thin plaster external thermal insulation system for external wall JG 149-2003
Polyurethane insulation materialThe external protective layer can be made of glass fiber reinforced plastic shock proof shell or black yellow double polymer yellow jacket to enhance the compressive strength and anti-corrosion ability of the insulation layer.Mainly used for various pipelinesCold storage、Storage tank, pipeline, thermal insulationPartition boardAnd roof, etc.
Rubber and plastic insulation materialProduct Guide: This product is a closed cell elastic material, which has excellent properties such as softness, bending resistance, cold resistance, heat resistance, flame retardant, waterproof, low thermal conductivity, shock absorption, sound absorption, etc.Can be widely usedcentral air-conditioning, construction, chemical industry, medicine, textilemetallurgy, ships, vehicles, electrical appliances and other industries
Advantages of rubber and plastic insulation materials
1. Green environmental protection: no harmful chlorine in the atmospherefluoride, conforming to ISO14000 InternationalEnvironmental certificationTherefore, no pollutants harmful to human body will be generated during installation and application.
2. Low thermal conductivity:Rubber and plasticIt is a high-quality heat preservation and energy saving material, which is cold and heat insulationAnti condensationYour nemesis, heatConductivity coefficientLow and stable, isolating any hot medium
3. Good fire resistance: rubber and plastic materials meetnational standardGB8624The Analytical Method for Burning Behavior of Building Materials is determined to be Class B1 fire-resistant material in GB8624 through testing.
4. Closed foam structure: adopt accurate control microcellular foam technology,VesicleThe foam closing rate is greatly improved, and the thermal conductivity of the product is lower;The bubbles are also more uniform and dense, with strong resistance to water vapor penetration, which extends the service life. The rubber and plastic are of closed foam structure. The water in the outside air is difficult to penetrate into the material, which has excellent resistance to water vapor penetration. There is no need to add any more on the surface of the cold insulation layerVapor barrier。ElastoplasticMoisture resistancefactorμvalueMore than 3500 (ISO9346) forms a built-in waterproof layer, even if the product is scratched, it will not affect the overall vapor barrier.Rubber and plastic are both insulation layer andDamp proof course。
5. Thin material and space saving: the thickness of rubber and plastic is about two-thirds less than that of other insulation materials.Therefore, the space above the suspended ceiling of the floor can be saved, and the indoor height can be improved.
6. Long service life: rubber and plastic have excellent weather resistance, anti-aging, cold resistance, anti-inflammatory heat, dry resistance, moisture resistance, and antiultraviolet raysOzone resistance, 25 year aging resistance, deformation resistance, maintenance free service life, etc.
7. High grade appearance, neat and beautiful: Jiuleng rubber and plastic hasHigh elasticitySmooth surface, soft texture, even installed on irregular components such as bends, tees, valves, etc., can maintain integrity and beauty, without decoration, even without ceiling, it can maintain high-end.
8. Convenient and fast installation: because the material is soft and no other auxiliary layer is needed, the construction and installation are simple. For the installation of pipesPipe installationYou can also cut rubber and plastic pipes and glue them with special glue.
Shockproof: made ofPEVAHigh foaming material, insulation board and pipe material are soft and elastic, so as to achieve good shockproof effect.
Thermal insulation: fine independent bubble structure, noAir convection, thermal conductivity<0.0325W/MK。
Sound insulation: with independent fine air chamber, strong sound insulation, which can be used for noise reductionProject。
Temperature: under the environment of+89 ℃ and - 60 ℃MaterialityIt is suitable for cold insulation of various refrigeration engineering projects.
Waterproof: the material is PEVA rubber plastic closed bubble structure, and each air chamber is closed.
Anti corrosion: This substance isPolymerIt can completely prevent the corrosion of acid, alkali and salt.
Processing: easy to cutBondingThe material is soft and elastic, especially convenient for installation and construction.
Loose insulation material
Glass wool insulation
Glass wool YesUse uniqueCentrifuge technology, fibrosis the molten glass and applyThermosetting resinMainly environmentally friendly formulabinderThe processed product is a kind of elastic glass fiber product made of glass fiber with a diameter of only a few microns, and can choose moisture-proof veneer online composite according to different use requirements of customersBecause it has a large number of tiny air gaps, it can provide thermal insulationSound absorption and noise reductionandsafety protection It is a material for building thermal insulation, sound absorption and noise reduction.
Glass wool belongs to a category of glass fiber, which is a kind of man-madeInorganic fiber。useQuartz sand、limestone、dolomiteAnd other natural ores as the main raw materialsSoda ash、boraxAnd other chemical materials into glass.Centrifugal glass woolThe internal fibers are fluffy and interlaced, with a large number of tiny pores, which is typicalPorous sound-absorbing materialIt has good sound absorption characteristics and can be made intowallboard, ceilingSpace absorberCan absorb a lot ofAcoustic energy, lowerreverberation time To reduce indoor noise.The sound absorption characteristics of glass wool are not only related to thickness and unit weight, but also related toCoverMaterial, structure and other factors.In the construction application, it is also necessary to take into account the cost, beauty, fire prevention, moisture-proof, dust, aging resistance and other issues.
Glass woolphysical property: Pass the standardAustraliaandNew ZealandAS/NSZ4859.1 Certification SGS Certification MSDS Certification EUCECE fire rating certification national standardGB/T13350-2000 application scopeIndustrial plant, Warehousecommunal facilitiesThermal insulation, sound absorption and noise reduction of exhibition centers, shopping malls, various indoor amusement parks, sports venues and other buildings.
Main characteristics of glass wool：
1. Fire resistance: glass wool has the highest fire resistance rating - Grade A, which fully meets the relevant national fire protection requirements to ensure the safety of buildings and the life of usersProperty security。Due to several major fires caused by unqualified thermal insulation materials, the state has put forward higher requirements for the fire resistance of building thermal insulation materials.
2. Thermal insulation performance: uniform fiber distribution and more slender fibers make the product have lower thermal conductivity, ensuring superior thermal insulation performance and other superiorperformance index , ensuring the thermal insulation effect of the productLong term。
3. Environmental performance: glass wool is colorlessplate glassAnd quartz sand as the main raw materialsGreen building materialsThe product and construction waste can be recycled, fully meeting the environmental requirements.
4. Acoustic performance: the glass wool has an internal porous structure, which makes it have superior sound absorption ability, greatly improvingindoor environment OfComfort。
5、Structural seismic performance: Glass wool is thin and long, which makesOverall structureHigh strength, excellent tensile and anti vibration performance, no matter installation or long-term use, it is not easy to sag, fall or collapse.
7、Air permeabilityEnergy: The porous open structure and special formula of glass wool make it more breathable than other insulation materials, which helps to timely diffuse moisture indoors and on the wall, greatly reducingmouldThe possibility of growth will help to extend the service life of buildings and improve the comfort of indoor environment.
8. Hydrophobicity:curtainWater repellent glass wool belongs to high water repellent glass wool productsHydrophobicityUp to 99%, easy to dry after being affected with damp, ensuring its long-term effective thermal insulation performance.
9. Light weight: glass wool has good thermal insulation and sound insulation performance, making its low-density products meet the energy saving requirements of the corresponding specificationsClass A fireproof insulation materialThe lightest material can not only reduce the bearing capacity of the building itself, but also facilitate the construction and improve the construction efficiency.
10. Construction and installation performance: the glass wool has fine fiber and does not contain slag balls, so as to avoid scratching or producingitchIrritation.At the same time, the material is soft and easy to cut, and any cutting surface is neat and consistent, which can greatly improve the installation efficiency, save labor costs and shorten the installation period.
Main uses of glass wool: I. Glass wool steel structure insulation, advanced centrifugationInjection methodGlass wool production process, producing soft texture, fine fiberGood elasticity, waterproof and fireproofglass wool blanket (It can be paved with aluminum foil and other veneers)Steel structure buildingProvides ideal insulationSound absorbing materialThis product has good heat preservation and sound absorption effectengineering costLow cost, short construction period, non-toxic, non irritating to skin, ensuring the health of construction personnel, beautiful appearance and other characteristics.2、 Thermal insulation and sound insulation of glass wool air duct.The glass wool is applied with heating and fixing adhesive, and the pressure and temperature are increasedCuring moldingIt is suitable for thermal insulation and sound insulation of air conditioning ducts of different specifications and other air ducts. The surface can be pasted with aluminum foil and other veneers, with excellent performance such as good thermal insulation, light volume weight, flame retardancy, vibration resistance and sound absorption.
Summary:
Centrifugal glass wool roll felt, plate,Thermal insulation pipe, glassSliver, foil pasting, hydrophobic,High temperature resistant glassCotton, highK valueGlass wool, low K value glass wool glass wool belongs to a category of glass fiber, which is a kind of artificial inorganic fiber.Natural ores such as quartz sand, limestone and dolomite are used as main raw materials, and some chemical raw materials such as soda ash and borax are used to melt into glass.In the melting state, it is blown into flocculent fine fibers by external force. The fibers and fibers are vertically crossed and intertwined with each other, showing many small gaps.This gap can be regarded as porosity.Therefore, glass wool can be regarded as a porous material with good thermal insulation and sound absorption properties.
Rock wool insulation blanket
Rock wool insulation blanketYesbasaltAnd other natural ores as the main raw materials, which are melted into fiber at high temperature and processed by adding proper amount of binder.This product is suitable for storage tank containers andLarge diameter pipelineThermal insulation.
Rock wool thermal insulation blanket has excellent thermal insulation performance, convenient construction and installation, significant energy-saving effect, and highPrice performance ratio。
Rock wool thermal insulation blanket is a high-quality thermal insulation material with low thermal conductivity.Applicable to large and medium diameter pipelines;Medium and small tanks and surfacesRadius of curvatureEquipment and building air conditioning with small arc surface or irregular surfacePipe insulationAnti dew and sound-absorbing insulation of walls.
During design and construction, attention shall be paid to the fixation and support of thermal insulation materials. If the thermal insulation layer is larger than 80mm, it is recommended to use double-layer thermal insulation to reduce the heat loss of joints.Due to the high thermal conductivity of water, the thermal conductivity of rock wool products will increase significantly after water enters.Therefore, it is necessary to prevent moisture from entering rock wool products during design and construction.
Porous insulation material
foam cement
3D reinforced foamed cement board
English name: Foamcementfoam cement The materials adopted by Germany were first introduced into China around 1980.YesFoaming machineThe foaming system of the foaming machine fully foams the foaming agent by mechanical means, and evenly mixes the foam and cement slurry, and then carries out cast-in-place construction or mold molding through the pumping system of the foaming machineNatural conservationThe utility model relates to a new light thermal insulation fireproof material containing a large number of closed pores.It belongs to bubble shaped thermal insulation material and is characterized by forming closed foam holes in the concrete to make the concrete lightweight and heat insulation.
Features of foaming cement:
Thermal insulation: thermal conductivity is 0.06-0.28W/(M.K), thermal resistance is aboutordinary concrete 10-20 times.
Lightness: drybulk density300-1600KG/m3, equivalent to ordinarycement concreteAbout 1/5~1/8, which can reduce the overall load of the building.
Sound insulation: foamed cement contains a large number of independent bubbles, which are evenly distributed. The sound absorption capacity is 0.09-0.19%, which is 5 times that of ordinary concrete. It has the function of effective sound insulation.
Water resistance: The cast-in-place foamed cement has low water absorption, relatively independent closed bubbles and good integrity, which makes it have a certain waterproof performance.
Durability: The service life is the same as that of the main works.
Simple construction: just useCement foaming machineIt can realize automatic operation and long-distance transportation with a vertical height of 200 meters, and the workload is 150-300 M3/workday.
Productive processability: Foamed cement can not only be produced into various products in the factory, but also can be used for on-site construction, directly casting into roof, floor and wall, and sawing, planing, nailing, drilling and other processing.
Environmental protection: the raw materials required for foaming cement are cement and foaming agent. The foaming agent is neutral, free of benzeneformaldehydeetc.Hazardous substances, avoiding environmental pollution and fire hazards.
Fire resistance: because the main raw material of foamed cement is cement, cement is an inorganic material and completely fireproof
Historical development
Thermal insulation materials and products are important for building energy conservationinfluence factor。Building insulationThe development and application of materials have attracted more and more attention all over the world.After the 1970s, foreign countries generally attached importance to the production and application of thermal insulation materials in buildings, striving to significantly reduce energy consumption, thus reducing environmental pollution andgreenhouse effect。The thermal insulation material industry abroad has a long history, and the thermal insulation materials used for building energy conservation account for the vast majority, while new thermal insulation materials are constantly emerging.
Before 1980, the development of thermal insulation materials in China was very slow, but after more than 30 years of efforts, especially the rapid development of nearly 20 years, many products have developed from scratch, from single to diversified, and from low to high quality, which has formed the following advantages:Expanded perlite、Mineral wool, glass woolFoam plastic、Refractory fibre、Calcium silicateIndustries with a complete range of products, such as thermal insulation products.
From January to December 2006, China imported mineral cotton;expandMineral materials；The quantity of heat insulation or sound insulation materials is 13110148.00 kg, and the foreign exchange is 29396269.00 dollars;From January to December 2006, China exported mineral cotton;Expansive mineral materials;The quantity of thermal insulation or sound insulation materials is 323873323.00 kg, and the foreign exchange is 141929418.00 dollars.
From January to October 2007, China imported mineral cotton;Expansive mineral materials;The quantity of heat insulation or sound insulation materials is 12844531.00kg, and the foreign exchange is 28133066.00 dollars;From January to October 2007, China exported mineral cotton;Expansive mineral materials;The quantity of heat insulation or sound insulation materials is 293114475.00 kg, and the foreign exchange is 148816708.00 dollars.
polyurethaneThe material is the thermal insulation material with the best performance in the world.Rigid polyurethane has many excellent propertiesEurope and AmericaThe country is widely used as thermal insulation materials for roofs, walls, ceilings, floors, doors and windows of buildings.In Europe, America and other developed countries, about 49% of building insulation materials are polyurethane materials, while in China, the proportion is less than 10%.Therefore, there is still much room for the development of polyurethane materials in China.
China has a large market for building energy-saving materials, especially for building insulation materials.Chinese housingenergy loss The wall accounts for about 50%;Roof accounts for about 10%;Doors and windows account for about 25%;The basement and ground account for about 15%.CSCEC to achieve in 2010Energy saving rate50%, the external wall of the building needs to be comprehensively reconstructed,Wall insulation materialOur market will increase significantly.
In addition to materialthermal conductivityIn addition, the water absorption, combustion performance, strength and other indicators of the material should also be considered.DifferentThermal insulation materialSee the corresponding classification guide for the performance characteristics of.
Inorganic thermal insulation materials are generally guidanceThermal coefficientMaterials less than or equal to 0.2.
Using good insulation technology and materials in construction and industry can often achieve twice the result with half the effort.Statistics show that every ton used in the buildingMineral woolThermal insulation products can save one ton of oil a year.The application of Beijing Energy Saving Community shows that the annual coal saving rate per unit area is 11.91 kgStandard coal/Square meters.For thermal insulation of industrial equipment and pipelines, good thermal insulation measures and materials can significantly reduce production energy consumption and cost, improve the environment, and have good economic benefits.For example, industrial equipment andPipeworkMedium, good thermal insulation conditions can reduce the heat loss by about 95%, and the investment in thermal insulation materials can be recovered by saving energy in about one year.
Before 1980, the development of thermal insulation materials in China was very slow, and only a few thermal insulation material plants could produce a small amount ofExpanded perlite、Expanded vermiculite、Slag wool、Ultra fine glass wool, microporeCalcium silicateAnd other products,Mineral woolFew factories,Insufficient production capacityThere are only three companies with an annual output of 8000 cubic meters of loose cotton and calcium silicate insulation materials.The quantity and quality of products can not meet the requirements.
Advantages and disadvantages
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There are mainly two kinds of equipment on the market to produce external wall insulation materials: one is commonDry powder mixerSecond, special exterior wallThermal insulation mortar equipment。These two devices have their own advantages and disadvantages, which are analyzed in detail below.
Everyone who makes external wall insulation materials knows that external wall insulation materials have very strict requirements on the mixing process. If the materials are mixedUnevenOr the high damage rate will affect the thermal insulation performance of materials.Ordinary dry powder mixers can also be used as mixing equipment for external wall thermal insulation materials, but only ordinary external wall thermal insulation materials can be mixed. The produced external wall thermal insulation products have ordinary thermal insulation performance and are suitable for building communities with low requirements for thermal insulation performance.
Single external wall thermal insulation mortar equipment, such as inorganic hollowVitrified bead equipment, specifically forVitrified microsphereOfMixing equipmentThis equipment is the most ideal equipment for mixing vitrified beads.It has high mixing efficiency, and the insulation material produced is the best due to the low damage rate of the double cone.There are not many manufacturers of this equipment, and there are only a few manufacturers in China.With the continuous attention to energy conservation and environmental protection, the new external wall thermal insulation mortar equipment will gradually be widely promoted.In a word, compared with the traditional dry powder mixer, the external wall thermal insulation mortar equipment has the characteristics of high mixing efficiency, no broken materials, and no impact on the physical properties of materials. It is an ideal equipment for the production of external wall thermal insulation materials.
2. Protect the main structure and extend the life of the building
The external wall thermal insulation scheme is adopted. Since the thermal insulation layer is placed outside the building envelope, the stress caused by structural deformation due to temperature change is buffered, structural damage caused by rain, snow, freezing and thawing, dry and wet cycles is avoided, and the erosion of the envelope by harmful gases in the air and ultraviolet rays is reduced.It has been proved that as long as the wall and roof insulation materials are properly selected and reasonably thick, external insulation can effectively prevent and reduce the temperature deformation of the wall and roof, effectively eliminating the top layerTransverse wallcommonOblique crackOr splayed cracks.Therefore, external insulation can not only reduce the temperature stress of the enclosure structure, but also protect the main structure, thus effectively improving the durability of the main structureInternal insulationMore scientific and reasonable.
3. The influence of "thermal bridge" is basically eliminated
External insulation is more advantageous than internal insulation in avoiding "thermal bridge", such as at the junction of internal and external walls, external wallsRing beam、Structural column、Frame beam, columns, door and window openings, and the top floorparapetAndRoof slabThe "thermal bridge" around the junction.According to statistics, the "thermal bridge" in the ground floor room is attachedthermal loadAccounting for 23.7% of the total heat load;Middle layerRoom accounts for 21.7%;The top floor rooms account for 24.3%.It can be seen that the influence of "thermal bridge" is relatively large.The above "thermal bridge" is almost unavoidable for internal insulation and sandwich insulation, while external insulation can preventDewingAnd can eliminate the attachment caused by "thermal bridge"Heating loss。The calculation shows that under the condition of internal insulation of 370mm thick brick wall, the surrounding "thermal bridge" makes the wallAverage heat transfer coefficientCompared with the main partHeat transfer coefficientIncrease by about 10%;Under the condition of internal insulation of 240mm thick brick wall, the average heat transfer coefficient of the surrounding "thermal bridge" is about 51%~59% higher than that of the main part, while under the condition of external insulation of 240mm thick brick wall, this effect is only 2%~5%.
4. Improve the damp condition of the wall
In general, the internal insulation must be provided with a vapor barrier, while when external insulation is usedSteam osmosisHigh sex subjectStructural materialsIt is located at the inner side of the insulation layer, and the condensation analysis is carried out with the steady-state moisture transfer theory. As long as the insulation material is properly selected, condensation will not generally occur inside the wall, so there is no need to set a vapor barrier.At the same time, after taking external insulation measures,Structural layerThe temperature of the whole wall body ofMoisture contentTherefore, the thermal insulation performance of the wall is further improved.
5. It is conducive to maintaining stability at room temperature
Because the structural layer with large heat storage capacity of the external thermal insulation wall is inside the wall, when the indoor is subject to unstable heatair temperature When rising or falling, the wall structure layer can absorb or release heat, so it is conducive to keeping the room temperature stable.
External Thermal Insulation System for Exterior Wall with Colloidal Polystyrene Particles JG158-2004
Wall insulation steel wire mesh according to the region andConstruction partyRequirements, wallspread a netThe specifications are generally:
Galvanized steel wire mesh plays a certain role in building insulation and crack prevention works. There are two types of plastering mesh for exterior wall painting: one is hot-dip galvanized steel wire mesh (with long service life and strong anti-corrosion performance);The other is to change the wire drawing wire mesh (economic preference, flat mesh surface, white and shiny)Construction unitIt is required to select materials reasonably. The specifications of steel wire mesh for painting construction are mostly 12.7 × 12.7, and the wire diameter is between 0.4-0.9.
purpose
In order to ensure the quality of the project and avoid cracks and hollowing on the wall, the external wall hanging net is used to plaster the wall, and the bottom layer is plastered on the hanging net.
In the buildingarchitectural engineeringamong,Welded wire meshIt is an indispensable heat preservation and crack prevention material. Its good performance can effectively give consideration to the unity of crack resistance and the requirements of facing bricks on the base strength. The best way to prevent wall cracking is to lay a layer on the wall at the beginning of building to meet the stability, safety and durability requirements of the heat preservation systemGalvanized welded mesh, hot-dip galvanized steel wire mesh can play the role of moisture resistance and insulation, and can significantly reduceThermal expansion and cold contractionFor the destruction of the wall, on the other hand, the toughness of hot-dip galvanized steel mesh is stronger than that of steel wire of the same specification, which can effectively increase the strength of the wall and further reduce the risk of wall cracking.
The main performance indicators of thermal insulation materials include thermal conductivity, capacity, compressive strengthFlexural strengthEtc.
thermal conductivity
Thermal conductivity refers toSteady heat transferUnder the condition of 1 m thick material, the temperature difference between the surfaces on both sides is 1 degree (K, ° C), and the heat is transferred through an area of 1 square meter within 1 hour.Thermal conductivity reflects the thermal conductivity of materials and is also the main thermophysical characteristics of insulation materials. It is related to the temperature, density, moisture content, internal structure, insulation layer size, etc. of materialsphysical property Closely related.The thermal conductivity of general thermal insulation materials increases with the increase of temperature, moisture content and bulk density, and the thermal insulation effect decreases.The unit of thermal conductivity is watt/meter · degree (W/m · K, where K can be replaced by ℃). The thermal conductivity is related to the composition, structure, density, moisture content, temperature and other factors of the material.Materials with amorphous structure and low density have low thermal conductivity.When the moisture content and temperature of the material are low, the thermal conductivity is small.Generally, materials with low thermal conductivity are called thermal insulation materials, while materials with thermal conductivity below 0.05W/m · K are called efficient thermal insulation materials.
Bulk density
Thermal insulation material
Unit weight refers to the weight per unit volume of the thermal insulation material that has been dried and is loose when the temperature is 110 ℃.It has an optimal unit weight value, that is, under the optimal unit weight, it has smaller thermal conductivity and better insulation effect.In engineering, in order to save energy and reduce thermal insulationPipe supports and hangersstructural load Thermal insulation materials with small volume weight shall be used as far as possible.The unit weight of general soft and semi hard materials shall not exceed 150 kg/m3, and the capacity of hard materials shall not exceed 220 kg/m3.
Fire resistance
Inorganic thermal insulation materials in thermal insulation materials belong to Class A incombustible green energy-saving productsClass A incombustible thermal insulation materialThe security performance is very high.It fully meets the Class A fire protection standard for thermal insulation materials as stipulated in the document [2009] No. 46 jointly issued by the Ministry of Public Security and the Ministry of Housing and Urban Rural Development.YintongThe inorganic active wall insulation material layer is firmly bonded to the base wall surface, with good resistance to cracking, hollowing, falling off, wind pressure, impact and weather.The wall will not be cracked or hollowed due to high temperature expansion in summer;It will not crack or fall off due to the cold contraction in winter.
Other performance
The maximum use temperature, thermal insulation and moisturizing materials, long-term safe and reliable workLimiting temperature, of general inorganic materialsHeat resistant temperatureRelatively high;Compressive strength refers to the compressive strengthCompressive forceWhen damaged by actioncross sectionMaximum onPressure load；Flexural strength, which refers to the flexural strength per unit areaCouple moment；Moisture content, which is the property of insulation material to absorb water.The value increases, and the thermal conductivity of the material increases accordingly,Severe damageThermal insulation effect.Generally, the moisture content of organic materials is low.
construction technology
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Vitrified bead mortar
(1) Firsthardware clothCut according to the preset size, and the length should be broken atRevealTrough;
(2) OnInsulation layerApply 2-3 mm thick anti cracking (plastering) mortar, and then useAnchor boltLay the steel wire mesh flat;
Base course wall passes throughacceptance of workachievequality standardBefore construction, the dust, dirt, oil stain, etc. on the base wall shall be cleaned and the surface shall be flat.
2. Key points of construction
A: Inorganic active wall thermal insulation material Class A non combustible green energy savingProduct configurationAccording to the weight ratio of product to water of 1.5:1, the mixer can be placed for 5-15 minutes after mixing to achieve proper operation.
B Inorganic active wall thermal insulation material Class A incombustible greenEnergy saving productsUse water firstthe base levelAfter the dust and oil stains on the wall are cleaned and properly wetted, the mixed products are directly applied to the base wall or the constructedcement mortarOn the surface.The wall shall be covered evenly and densely for the first time with a thickness of about 10mmWater contentAt about 50%, the second batch plastering can be carried out, and the batch plastering thickness shall be controlled between 10-20mm.To achieve firm bonding, no hollowing, no cracking.Generally, the construction thickness of the product can be completed by one-time batch plastering within 20mm, and the product thickness can be completed by second batch plastering within 30mm, or internal and external composite construction can be done, which can not only save the materials for internal and external plastering of cement mortarCostandLabor cost, and can saveConstruction periodTo achieve more at one stroke.Initial setting timeIt takes about 2 hours. All processes are completed on the same day and can be pasted in seven daysface brick, you can do it in ten daysspray painting and coating。If the base wall isConcrete shear wallWhen using the product, it is necessary to do routine work one day in advanceInterface mortarIt is recommended to hang mesh (glass fiber mesh orGalvanized steel wire mesh）To ease the base courseWall materialDue to swellingShrinkage coefficientThere are problems due to differences.
Foam concreteWith its good characteristics, it is widely used in energy-saving wall materials, and has also been applied in other aspects.The application of foam concrete in China is mainly roof foam concrete insulation layer cast-in-place, foam concrete surface block, foam concreteLightweight wallboardFoam concrete compensation foundation.However, making full use of the good characteristics of foam concrete can expand its application field in construction engineering, speed up the project progress and improve the project quality, as follows:
backfill material It can reduce the vertical cut-off load and the lateral load on the bank wall.This is because foam concrete is a rigid body with good bonding performance. It does not exert lateral pressure on the bank wall along the periphery, so the settlement is reduced, and the maintenance cost is reduced, thus saving a lot of expenses.Foam concrete can also be used to enhanceEmbankment slopeAnd replace part of the soil of the slope with it, which reduces the impact due to the reduction of the massslope stability OfForce。
Sports ground and track and field track.useDrainage capacityStrong permeable foam concrete is used as light foundation, which is covered withGravelorArtificial turf, used as a playground.The density of foam concrete is 800-900kg/m³This kind of playground canHockey, football and tennis activities.Or cover a layer of 0.05m thick porous concreteasphaltLayer and plastic layer can be used as track and field runway.
Chemicals, sewage pipes and other cavities are easy to cause fire or collapse. Backfilling with foam concrete can solve these problems with less cost.The density of foam concrete depends on the pipe diameter andgroundwater level, generally 600-1100kg/m³。 (5)Lean concreteFill layer.Due to the use of flexible hoses, foam concrete has a largeWorking degreeAnd adaptability, so it is often used for lean concrete filling.If the requirement for thermal insulation is not very high, the density is 1200kg/m³The left and right lean concrete filling layers have an average thickness of 0.05m;If the requirement for thermal insulation is very high, the density is 500kg/m³And the average thickness is 0.1 - 0.2m.
LandscapingApplication.takefoam cement The unit weight is 600-1000kg/m³It can be used as handrail and rockery in gardens,stool, tables, etc.
There are many kinds of thermal insulation materials,Scope of applicationIt is also very wide.
Air conditioning insulation, air duct insulation, steel structure insulation, boiler insulation, dust collector, steam pipeline insulation, etc.
Use of Vinyl insulation blanket:
Petroleum, chemical industry, thermal power, steel, nonferrous metalsIndustrial furnaceThermal insulation and protection of thermal equipment in other industries.
Immersed in resin and processed into plate, it is a real estate building andcold air machineExcellentGasketHeat insulation and noise reduction materials.
Use of thermal insulation foam glass:
Energy conservation of building wall insulation and building roofWaterproof application。
Thermoplastic organic foam of thermal insulation material has the characteristics of light weight, high efficiency, etc. It shrinks, melts, drips and burns in case of fire;Thermosetting thermal insulation material is made of FLOLIC as the main raw material, mixed with a variety of inorganic fillers, and foamed and solidifiedPolymer synthetic materials。It has non combustion, low thermal conductivity, no FreonTemperature adaptationWide range, good chemical corrosion resistance, water resistance, strong aging resistance, convenient construction, beautiful appearance, etcLow temperature performanceIt shows a broad application prospect, and it is an organic typeThermal insulation materialAnd provide thermal insulation, energy conservation and environmental protectionNew ideasIt is one of the most advanced and perfect thermal insulation material systems.Thermosetting organic foam burns and carbonizes in case of fireCarbon depositSelf resistance.It can be seen that thermosetting organic foam hasspecific heatPlastic organic foam has better fire resistance.The experiment shows that B2 thermosetting organic foam has better fire resistance than B1 thermoplastic organic foam.scientific researchIt is proved that the fire resistance of B1 thermosetting organic foam is even better than that of ordinary glass wool and other A-grade inorganic fiber insulation products. The carbon deposit flame retardant layer formed during the combustion of thermosetting organic foam can prevent the flame from spreading.When selecting organic thermal insulation materials, it is necessary not only to limit the combustion grade, but also to distinguishcombustion characteristic 。
2. Clean the dirt on the surface of the air duct for glue coating, and then transport the materials to the site. The air duct measurement is carried out by the material cutter. Lay a clean board for cutting on the ground and start blanking. In order to keep the surface of the finished product clean,Glue brushingAnd other steps should be sanitized (pavedOilclothOr wooden board), brush glue on it and keep the surface clean.
3. The installation shall be carried out according to the steps. The surface of the iron sheet air duct shall be painted with glue, and the surface of the insulation board shall be painted with glue. Then, the bottom shall be painted in orderMoreThe two sides, the last top, the surface of the connection of the two air ducts, the insulation flange bead, the bead to complete the insulation installation of this part, and so on, according to this step cumulative construction.
Testing equipment
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Whether the manufacturer, user orQuality supervision departmentIn order to judge whether the thermal insulation materials are qualified, special instruments and equipment are needed for testing. Here are some examples to illustrate.
【1】 For example, the resistance of insulation materials shall be testedtensile strength Performance, one can be selected according to the bearable tension of specific insulation materialstesting machineEquipment and equipment parameters are described as follows:
one
Main purpose:
This machine is specially designed forComposite mortarSecurity system, polystyrene board thin plaster external wall insulation system, hardpolyurethane foam Composite panel external wall enclosure system and other external wall insulation systems and roof insulation materialsperformance testTested and developed.
Applicable standards of the machine:
JC/T992-2006 Expansion Polyethylene Board Adhesive for Wall Thermal Insulation
JC/T993-2006 Expansion Polyethylene Board Plaster for External Wall Insulation
DBJ01-38-20025 Technical Specification for Construction of External Thermal Insulation of External Wall Polymer Cement Mortar Adhesive
DBJ/T01-50-2002 Technical Specification for Construction of External Thermal Insulation of External Walls Flexible Water resistant Putty
2、 Technical parameters:
Main technical parameters
WDW-10
WDW-20
WDW-50
WDW-100
Maximum experimental force
10KN
20KN
50KN
100KN
measuring range
2% - 100% of maximum test force
Accuracy level of testing machine
Level 1
Test force accuracy
Better than the indicated value ± 1%
Displacement measurement
Resolution is 0.01mm
Deformation accuracy
Better than ± 0.5%
Speed regulation range
1-300mm/min
Experimental space
600mm (can be customized as required)
Stepless speed regulation
Adopt AC servo motor and control system
Test space adjustment mechanism
High precision ball screw drive
appearance
Conform to national GB/T2611 standard
Experimental protection function
overload protection
Safety protection device
Limit protection
Host size
720*490*1850
Host form
Portal frame structure
weight
About 650KG
work environment
Room temperature - 45 ℃, humidity 20% - 80%
【2】 Similarly, to test the compression resistance of insulation materials, a testing machine can be selected according to the allowable pressure of specific insulation materials. The equipment parameters are briefly described as follows:
