1. Rigid polyurethane has low thermal conductivity and good thermal performance.When the density of rigid polyurethane is 35~40kg/m3, the thermal conductivity is only 0.018~0.024W/(m · k), about half of EPS, which is the lowest of all thermal insulation materials.
2. Rigid polyurethane has moisture-proof and waterproof properties.The closed cell rate of rigid polyurethane is more than 90%, belonging toHydrophobic materialIt will not increase the thermal conductivity due to moisture absorption, and the wall will not leak.
3. Rigid polyurethane is fireproof, flame retardant and high temperature resistant.After adding flame retardant, polyurethane is a flame retardant self extinguishing material. Its softening point can reach more than 250 ℃, and it will decompose only at higher temperatures. In addition, polyurethane will form carbon deposits on its foam surface when burning, which will help isolate the foam below.It can effectively prevent flame spread.Moreover, polyurethane does not produce harmful gases at high temperatures.
4. BecausePolyurethane sheetIt has excellent thermal insulation performance, which can reduce the thickness of the building's outer enclosure structure and increase the indoor use area under the same thermal insulation requirements.
5. It has strong deformation resistance, is not easy to crack, and the finish is stable and safe.
6、Polyurethane materialThe porosity structure is stable, basically closed pore structure, which not only has excellent thermal insulation performance, but also has good freeze-thaw resistance and sound absorption.The average service life of rigid polyurethane insulation structure can reach more than 30 years under the condition of normal use and maintenance.Under normal service conditions during the service life of the structure, the structure will not be damaged in dry, wet or electrochemical corrosion, as well as due to the growth of insects, fungi or algae, or due to rodent damage and other external factors.
7. High comprehensive cost performance ratio.Although hardPolyurethane foamThe unit price of materials is higher than that of other traditional insulation materials, but the increased cost will be offset by the substantial reduction of heating and cooling costs.
Chinese name
Polyurethane insulation board
Foreign name
PUR
thermal conductivity
0.018~0.024W/（m·k）
Status
At present, the thermal conductivity of all thermal insulation materials is the lowest
Performance
moisture-proofWaterproof and thermal insulation performance
Rigid polyurethane insulation board can be widely usedColor steel sandwich panel, central air conditioning, building wall materials, cold storage, cold rooms, incubators, chemical tanks and other fields.
Product features
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● There are many specifications and varieties, and the volume weight range is (40-60kg/m3);Length range: (0.5m-4 m);Width range: (0.5m-1.2m);Thickness range: (20mm - 200mm).
● High cutting precision, thickness error ± 0.5mm, thus ensuring the flatness of the finished product surface.
● The foam is fine and dense with even bubbles.
● Light unit weight can reduce the self weight of finished products, 30-60% lower than traditional products.
● With high compressive strength, it can withstand the huge pressure during the manufacturing of finished products.
● It is convenient for quality inspection. Since the skin around is removed in the cutting process, the quality of the plate is clear at a glance, ensuring the thermal insulation effect of the finished product.The thickness can be produced and processed according to user requirements.
performance index
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Density (kg/m
40- 60
Compressive strength (kg/cm2)
2.0 - 2.7
Closed porosity%
> 93
Water absorption%
≤3
Thermal conductivity W/m.k
≤0.025
Dimensional stability%
≤ 1.5
Service temperature ℃
-60℃ +120℃
Oxygen index%
≥26
Related terms
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Polyurethane rigid foam：It is formed by the mixing reaction of component A and component B and has the functions of waterproof, thermal insulation, etcRigid foam plastic, called polyurethane rigid foam, referred to as polyurethane rigid foam.
Component A:Component A refers to the composite composed of composite polyol (composite polyether or polyester), foaming agent and other additives, commonly known as white material.Component A is one of the necessary raw materials for forming rigid polyurethane foam.
Component B:Component B means that the main components areIsocyanateThe raw material is commonly known as black material.Component B is also formedPolyurethane rigid foamOne of the necessary raw materials for.
Polyurethane rigid foam external wall thermal insulation system：The general name of non load bearing thermal insulation structure formed on the external surface of exterior wall, which is composed of polyurethane rigid foam thermal insulation layer, interface layer, plastering layer, finishing layer or fixed materials.
Application of polyurethane rigid foam by spraying method:Special spraying equipment is used to make component A and component B mix evenly at a certain proportion from the nozzle, and then foam rapidly to form seamless polyurethane rigid foam on the base of exterior wall.This construction method of polyurethane rigid foam is called spraying method.
Installation site
Pouring method constructionPolyurethane rigid foam：The special pouring equipment is used to inject the mixture formed by component A and component B ejected from the nozzle of the pouring gun in a certain proportion into the formwork cavity installed on the external wall, and then the mixture foams at a certain speed to form a full and continuous rigid polyurethane foam in the formwork cavity.This construction method of polyurethane rigid foam is called pouring method.
Polyurethane rigid foam insulation board:Polyurethane rigid foam insulation board refers to the insulation board produced on the professional production line of the factory, which uses polyurethane rigid foam as the core material and is covered with a certain non decorative surface layer on both sides.The surface course is generally designed to increase the bonding strength between polyurethane rigid foam insulation board and base wall, prevent ultraviolet rays and reduce damage during transportation.
Polyurethane rigid foamComposite insulation board:The polyurethane rigid foam composite insulation board is produced on the professional production line of the factory, which uses polyurethane rigid foam as the core material and is covered with a decorative surface layer on both sides or one sideComposite sheet。
Adhesive construction of polyurethane rigid foam:Use special bonding materials to stick polyurethane rigid foam insulation board or polyurethane rigid foam composite insulation board to the surface of exterior wall base course to form insulation layer or insulation decoration composite layer.This construction method of polyurethane rigid foam is called sticking method.
Keel:It shall be fixed on the load-bearing part of the external wall of the building in an appropriate way and with sufficient strength for hanging polyurethane rigid foam insulation board orDecorative sheetIs called keel.
Pendant:takePolyurethane rigid foamInsulation board orDecorative sheetThe mechanical fasteners fixed on the keel with sufficient strength are called pendants.Construction of polyurethane rigid foam by dry hanging method: use special hangers to fix polyurethane rigid foam insulation board or thermal insulation decorative composite board on the surface of exterior wall base to form an insulation layer or thermal insulation decorative composite layer.This construction method of polyurethane rigid foam is called dry hanging method.
Dismantle free formwork:After the pouring of polyurethane rigid foam, the formwork will not be removed and will be used as an integral part of the external insulation system.Such formwork is called dismount free formwork.
an adhesive:The material used for bonding between polyurethane rigid foam insulation board and base wall becomes adhesive.Plastering glue: the material used to form the plastering layer outside the insulation layer is called plastering glue.Compression bending ratio: the ratio of compressive strength to flexural strength of the same material, called compression bending ratio.
Plate shape performance
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1、 Roof slab
(1) Concealed composite plate
a. The screw is hidden, and the waterproof effect is good to prevent the corrosion of the screw and avoidCold bridge phenomenonOccurrence of.
Polyurethane insulation board
b. The wave crest is 40mm high. The design improves the bearing capacity of the roof panel, reduces the use of roof purlins, enhances the load capacity, and has the function of balancing water flow.
(2) Lap type composite plate
a. The lapping mother mouth edge is processed by the lapping process, which makes the lapping more compact and avoids the corrosion of the edge due to no coating, which extends the service life of the plate and increases the strength.
b. The three wave crest design with a crest height of 34mm improves the bearing capacity of the roof panel, reduces the use of roof purlins, increases the load capacity, and has the function of balancing water flow.
Schematic diagram of lap roof panel and node
c. The water separation tank is designed to prevent water seepage.
2、 Wall panel
(1) Socket type composite board
a. The five side ladder type socket is tight.
b. Improve the utilization rate of steel plate, and make it economical and applicable.
Polyurethane insulation board
(2) Concealed composite board (concealed nail type)
a. The concealed nail type connection is adopted, which can be placed horizontally and vertically. The connection is tight, and there is no direct heat conduction when nailing.
b. The screws are hidden under the plate to prevent corrosion and ensure the overall aesthetic effect.
c. The connection treatment has reasonable mechanical design, balanced force, and stronger resistance to negative wind pressure.
a、The unique convex groove structure improves the airtightness of the plate socket.
b. The board is even and stable, with good heat insulation performance and waterproof performance.
Polyurethane insulation board
Performance comparison
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Performance characteristics of polyurethane
Advantages of polyurethane:
1: High efficiency thermal insulation Since the thermal conductivity of foaming agent used in polyurethane is much lower than that of air (good thermal insulation performance)Polyurethane rigid foamIts thermal insulation performance is better than that of air only materials such as mineral wool, glass fiber and polystyrene.Moreover, its unique closeness and high resistance to gas diffusion make it have excellent long-term insulation performance, and its thermal insulation performance can last for 20-50 years or more.
2: The closed cell structure of the excellent corrosion-resistant polyurethane rigid foam and the surface materials used make it have superior air resistance and water vapor resistance, and it can be made into a mosaic connection structure when forming, which is easy for post assembly.It does not need additional insulation layer to prevent moisture, so it saves a lot of trouble in laying insulation layer.These properties cannot be possessed by other insulating materials at the same time.
3: The wide, light and thin wall makes the overall structure have the advantages of light weight, large span and high load because the polyurethane rigid foam acts as the structural material at the same time.Compared with other insulating materials, polyurethane rigid foam has the best thermal insulation performance.Therefore, the thinner polyurethane sandwich panel can meet the relevant provisions on building energy consumption limit, which allows the use of thinner panels during construction to save building space.
4: With stable quality and high production efficiency,Polyurethane sandwich panelIn addition to the convenience of quality control, our factory production line has brought us good economy and competitiveness.
5: The polyurethane sandwich panel with good weather resistance and easy installation can be directly used for construction and installation after prefabrication in the factory. No additional process is required and the construction is fast.And the production is carried out according to the plan without taking into account the change of weather.
Disadvantages of polyurethane:
1: The formula and proportion of insulation board are disordered and unstable, resulting in poor physical stability of the board and poor insulation effect;
2: The workability of spraying has not been solved, and it is difficult to ensure the project quality.
Performance characteristics of extruded board
Advantages of XPS:
1. XPS board has dense surface layer and closed pore structure inner layer.Its thermal conductivity is much lower than EPS of the same thickness, so it has better thermal insulation performance than EPS.For the same building exterior wall, its thickness can be less than that of other typesThermal insulation material。
2. Because of the closed pore structure of the inner layer.Therefore, it has good moisture resistance, and can still maintain good thermal insulation performance in a humid environment;It is suitable for buildings with special requirements for thermal insulation such as cold storage, and also for buildings with facing bricks or stones as external wall facing materials.
3. Light texture, easy to use: The XPS board's completely closed cell foaming chemical structure and honeycomb physical structure make it light, high-strength, easy to cut, transport, not easy to damage, and easy to install.Due to extrusionpolystyreneMechanical fasteners shall be used to fix the base wall.Construction can be carried out as usual in winter.
4. Good stability and corrosion resistance: during long-term use, it does not age, decompose or produce harmful substances. Its chemical properties are extremely stable, and it will not degrade due to water absorption and corrosion, which will reduce its performance. It can still maintain its superior performance under high temperature environment. According to relevant information,XPS extruded insulation board can still maintain excellent performance even after 30-40 years of use, without decomposition or mildew, and without the volatilization of toxic substances.
Disadvantages of XPS:
1. XPS plate has high strength, which makes the plate brittle and not easy to bend. The stress on the plate is concentrated, which is easy to damage and crack the plate.
2. The air permeability is poor and almost airtight. If the temperature difference between the two sides of the board is large and the humidity is high, it is easy to dew.
3. As the surface of the plate is smooth, the interface treatment and roughening are required during construction.Rough panel is not in this column.
4. The XPS board is not firmly bonded with the plastering mortar and is easy to fall off;The external tiles fall off faster and more seriously.
Performance characteristics of phenolic board
Advantages of phenolic board:
1. Excellent fire resistance:Phenolic foam insulation boardyesPhenolic insulation boardIt is incombustible in case of fire, with the combustion performance up to Class A, the maximum use temperature of 180 ℃ (allowable instantaneous 250 ℃), and the flame resistance of 100mm thick phenolic foam can reach more than 1 hour without being penetrated.Under the direct action of the flame, there is carbon deposition, no drop, no curl and no melting phenomenon. After the flame burns, a layer of "graphite foam" is formed on the surface to effectively protect the foam structure in the layer.
2. Excellent thermal insulation performance: phenolic foam insulation board has low thermal conductivity (<0.025W/m · K, more than twice of polystyrene, similar to polyurethane), which is an excellent material for thermal insulation;3. Corrosion resistance and aging resistance: phenolic foam insulation board can resist the corrosion of almost all inorganic acids, organic acids and organic solvents.Long term exposure to the sun, no obvious aging phenomenon, so it has good aging resistance;
4. Low density and light weight: the density of phenolic foam insulation board is below 100kg/m3, which can reach about 50kg/m3.It can reduce the dead weight of the building, reduce the load of the building, reduce the structural cost, and the construction is simple and fast, which can improve the work efficiency;
5. Sound absorption performance: phenolic foam insulation board has excellent sound absorption performance, and the open cell foam structure is more conducive to sound absorption;
6. Environmental protection: phenolic insulation board adopts fluorine free foaming technology, without fiber, which meets the national and international environmental requirements.
Disadvantages of phenolic board:
The fire resistance rating is B, up to A2, but it increases the cost.In order to increase its compressive strength and tensile strength, a layer of inorganic board or grid cloth is usually pasted on both sides.
The operating temperature is - 60 ℃~150 ℃. It can not be used at high temperature. Theoretically, it can resist high temperature distortion. The high temperature mentioned here will never exceed 200 ℃, and 200 ℃ is not high temperature, and there must be highly toxic smoke if it exceeds 200 ℃.
7. It is impossible for organics to resist aging and long-term effects of ultraviolet rays,Phenolic insulation boardIt will lose its function and shorten its life.
In September 2009, Interim Provisions on Fire Protection of Exterior Wall Thermal Insulation System and Exterior Wall Decoration of Civil Buildings[1]Promulgated and implementedBuilding insulation materialsThe fire rating of is specified.Commonly used in ChinaWall insulation materialExtremely easy to burn, how to combine the high efficiency and energy saving of thermal insulation materials with excellent fire prevention has become an industrial problem.The polyurethane exterior wall thermal insulation and fire protection system has outstanding fire protection performance and reaches the national A-level standard. It is fire-resistant and heat-resistant, does not melt under high temperature, has no dripping, and has low smoke, good dimensional stability, and has good thermal insulation and energy saving effects. It combines excellent fire protection performance and good energy saving effects, and is suitable for exterior wall thermal insulation and many other fields.
Fire ratingNational Center for Quality Supervision and Inspection of Fireproof Building MaterialsAccording to the test, the fire rating of polyurethane (PUR) board reached B1, and the polyurethane exterior wall insulation and fire protection system reached Class A of the national fire protection standard. Under high temperature, there is no droplet, no softening, and no diffusion of flame penetration, which fundamentally solves the external insulation fire.
