Guangzhou Hongyu Waterproof and Thermal Insulation Company; Undertake all kinds of national: polyurethane Direct burial Thermal insulation pipe Prefabricated polyurethane insulation pipe, inner External wall insulation , polyurethane spray insulation on the roof, waterproof and thermal insulation works, exterior wall waterproofing, roof waterproofing, basement waterproofing, artificial lake waterproofing The Conduit Polyurethane insulation, polyurethane insulation construction, polyurethane spraying construction, cold storage Insulation board Engineering, polyurethane insulation materials, polyurethane waterproof and insulation integrated construction, roof polyurethane spraying and insulation engineering, cold storage and other insulation projects, as well as chemical pipeline insulation, oil pipeline insulation, anti-corrosion engineering, pool insulation, polyurethane pool insulation, fire pool insulation, underground pool insulation, midpoint air-conditioning pool waterproof and insulation, storage pool insulation Thermal insulation works such as cold storage pool, roof polyurethane spraying thermal insulation works, cold storage, etc.
Polyurethane directly buried insulation pipe
Product Details
Construction process of prefabricated polyurethane directly buried insulation pipe, construction process of prefabricated polyurethane directly buried insulation pipe,
What are the basic raw materials for polyurethane insulation pipe foaming?
The formula used in the actual foaming process of polyurethane insulation pipe is mainly composed of the following raw materials.
① Polyether, polyester or other polyols ——— Main reaction raw material.
② (e.g TDI 、 MDI 、 PAPI Etc.) ——— Main reaction raw material.
③ water ——— Chain growth agent is also the raw material source for generating carbon dioxide bubbles.
④ crosslinking agent ——— Improve the mechanical properties of foam, such as elasticity.
⑤ Catalyst (amine and tin in agricultural production system) ——— Catalytic foaming and gel reaction rate.
⑥ Foam stabilizer ——— Make the foam stable, and control the size and structure of the holes.
⑦ External foaming agent ——— After vaporization, it can be used as the source of bubbles and can remove the reaction heat to avoid the foam center being generated by high temperature “ Scorch ” 。
⑧ Flame retardant ——— Make the foam plastic flame retardant.
⑨ Pigment ——— Provide various colors.
⑩ Release agent.
The polyurethane directly buried pipe has obvious advantages in the transformation of heating pipes
The polyurethane directly buried pipe is a trinity directly buried thermal insulation pipe produced by a complete set of high-pressure polyurethane foaming equipment, which has excellent overall performance. Strictly implement the shot blasting and rust removal treatment on the outer surface of the steel pipe and the corona treatment process on the inner surface of the outer protective pipe, and further improve the bonding performance of the thermal insulation pipe. Material is density 60kg/m3 to 80kg/m3 The rigid polyurethane foam can fully fill the gap between the steel pipe and the casing, and has a certain bonding strength, so that the steel pipe, the outer casing and the insulation layer form a solid whole.
Due to good sealing connection and long pipe length, polyurethane directly buried pipes have lower penetration than traditional materials —— The seepage rate greatly reduces the penetration of groundwater into the pipeline, and also reduces the pollution of medium seepage to soil and groundwater.
The construction of polyurethane directly buried pipes occupies a small area, has a short construction period, and has significant economic benefits. Combined transportation at -50 ℃ —150 Thermal insulation and cold insulation works for various mediums within the range of ℃. It is widely used in urban central heating, warm room, cold storage, coal mine, oil port, chemical industry and other industries of thermal insulation and cold insulation engineering. Huge trenches need to be built, and only the insulation pipes need to be buried underground, so the project land occupation is greatly reduced, and the amount of earth excavation is reduced by about fifty %Above, reduce the amount of civil masonry and concrete ninety ％。 At the same time, insulation pipe processing and on-site trenching are conducted in parallel, and only on-site joints are needed, which can shorten the construction period by about fifty %Above.
The polyurethane directly buried pipe is equipped with leakage startup emergency signal line. Once leakage occurs somewhere in the pipe, the transmission of the emergency signal line can be started to display the exact location and degree of water leakage of the insulation pipe on the special use detection instrument, so as to notify the leakage detection personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating pipe network.
The construction process of prefabricated polyurethane directly buried insulation pipe, the construction process of prefabricated polyurethane directly buried insulation pipe, and the polyurethane insulation pipe industry take the road of low-carbon economic development
At present, polyurethane insulation pipe has strong competitiveness. The greater advantages and strengths lie in both private enterprises and traditional industries. Entering the higher market is inseparable from high and new technology. Recently, the Polytechnic Institute and the Modern Manufacturing Engineering Research Institute of Zhejiang University have joined forces to build a rapid digital design and accurate testing center for polyurethane insulation pipes to serve the local polyurethane insulation pipe industry. With the development of the polyurethane insulation pipe industry in China, the competition from various provinces is becoming increasingly fierce, and the disordered competition in the polyurethane insulation pipe industry has begun to appear. The disadvantages of low cost of hardware, low grade of product structure and low technical content are also increasingly exposed. twenty century sixty In the s, polyurethane insulation pipe industry began to rise in the South China Sea, eighty It reached its peak in the late s. At that time, the threshold of polyurethane insulation pipe industry was very low, and no technology was needed, three If you buy some old equipment for 10000 yuan, you can open a family workshop type polyurethane insulation pipe processing factory. after forty Over the years of development, there have been more than 10000 processing enterprises of various hardware and polyurethane insulation pipes, most of which are labor-intensive small enterprises.
At present, the domestic private polyurethane insulation pipe enterprises generally have advanced equipment resources, and the technology application is relatively advanced. The new technology can be widely and rapidly applied in the industry, from design and manufacturing to the production of related materials, heat treatment, etc., forming an industrial chain with outstanding integration advantages. However, due to the lack of funds and their own brands, polyurethane insulation pipe enterprises will increase investment in management and technical transformation, expand the proportion of medium and high grade products, and set up a domestic sales department to expand the domestic market.
It is necessary to promote the pilot project of circular economy in polyurethane insulation pipe industry, focus on the reduction of resource consumption and waste discharge based on the principle of reduction, reuse and recycling, and actively implement the national preferential policies for comprehensive utilization of resources, carry out the reuse of waste batteries, waste household appliances, old furniture, bamboo and wood processing residues, mining waste Resource utilization of sewage treatment plant sludge and stainless steel processing waste residue. Vigorously developing industrial circular economy to promote cleaner production is an important embodiment of low-carbon economy. Vigorously developing industrial circular economy to promote cleaner production is an important embodiment of low-carbon economy
The polyurethane insulation pipe industry will change from the extensive development mode mainly relying on scale expansion and quantity increase in the past to the lean development mode mainly relying on scientific and technological progress and improving product quality and level, from the development mode mainly focusing on the introduction, digestion and absorption of all advanced technologies to the development mode focusing on the introduction, digestion and absorption of all advanced technologies and improving independent innovation ability ; The transformation from a skill based industry to a technology based and modern enterprise management based industry ; Vigorously promote the innovation driven development mode, and cultivate and develop new growth points. We should vigorously develop modern manufacturing service industry, steadily extend and develop the upstream and downstream industrial chain with polyurethane insulation pipe manufacturing as the core, support the construction of polyurethane insulation pipe industry cluster, pay attention to the reasonable layout coordinated with polyurethane insulation pipe manufacturing, and gradually form an industrial pattern with complementary advantages and coordinated development.
How to make full use of polyurethane insulation pipe
In the development process of insulation material industry, different kinds of polyurethane insulation pipes appear in the market. As an important form, polyurethane insulation pipe is playing an important role in publicity. Of course, in practical application, we will feel the effectiveness, advantages and disadvantages of polyurethane insulation pipe. Let's summarize here.
one Insulation method. Polystyrene board / The construction method of adhesive anchor combination is generally adopted for extruded board , The number of anchors required is large. Tests show that , One more per square meter on average ф6 Plastic anchors can increase the average heat transfer coefficient of external walls zero point zero zero four 。 This will inevitably lead to a large increase in heat loss through the thermal bridge components , So as to greatly reduce the energy saving effect of theoretical calculation , Failed to reach the expected energy saving goal. No metal anchor is required to fix the wall during polyurethane construction , Therefore, the occurrence of this kind of situation is fundamentally eliminated , Effectively reduces the thermal conductivity correction factor , The actual energy saving effect is basically consistent with the theoretical calculation value.
two Thermal insulation performance. Glass wool / Rock wool belongs to loose fiber thermal insulation material , Such materials , Even with lower thermal conductivity , It can better block the heat loss caused by heat conduction , But there is nothing we can do about the heat transfer in the form of thermal convection. According to the statistical results of relevant departments , building 40% The heat loss of is all lost through the gap in the form of thermal convection. Polyurethane not only has low thermal conductivity , It can better block heat conduction , And has good sealing performance , Able to completely wrap the building envelope , Effectively prevent the generation of thermal convection , To achieve better energy conservation.
three mould. Glass wool / There will be a lot of dust and agricultural production system in the fiber structure of rock wool over time , These impurities will breed a large number of mold under suitable temperature and humidity conditions. After the polyurethane insulation pipe is sprayed, a seamless continuous shell is generated , The shell surface does not absorb dust , And the foam has strong hydrophobic characteristics , It fundamentally blocks the conditions for mold production.
