Main Purpose Of Polyurethane / Glass Fiber Composites

1) Used in building materials In recent years, building energy conservation has become an important part of China's sustainable development. In buildings, doors and Windows, exterior walls, roof and ground are the four main parts of the energy consumption of the building, while the insulation of doors and Windows is the worst. It is estimated that, in terms of the typical retaining parts in China, the energy consumption of doors and Windows is about 4 times of the wall, 5 times of the roof, and more than 20 times of the ground, accounting for about 40%~50% of the total energy consumption of the retaining parts. Therefore, enhancing the thermal insulation performance of doors and Windows, reducing the energy consumption of doors and Windows, is an important link to improve the quality of indoor thermal environment and improve the level of building energy saving. The rise of composite materials in the application brings us new ideas, making it possible to apply them to the transformation of building energy-saving doors and Windows. Polyurethane pull extrusion window frame, compared with traditional materials, it has stronger size stability, higher transverse mechanical properties, higher specific strength and rigidity, and has better heat insulation effect. In addition to the unique pull and extrusion process of polyurethane material technology, the material does not contain mechanical volatile matter (VOC), so it is also very environmentally friendly. Glass fiber reinforced polyurethane extrusion door and window profile, is produced with glass fiber as the reinforcing material, polyurethane as the matrix, through the advanced injection immersion rubber extrusion process. The development of GRPU door and window profiles is to provide energy-saving window solutions with a total heat transfer coefficient of K 2.0 W / (mK) for high-rise buildings. Polyurethane (PU) has the innate heat insulation ability, in the energy saving doors and Windows industry has long been used to make foam sealant, sealing strip, heat insulation strip, polyurethane used to make the whole window of energy saving window frame, which is the first in China. The advantages of GRPU window frame are determined by the performance characteristics of GRPU material itself. As a new type of composite material, GRPU is a new growth point. Using this resin, you can make larger, thinner and strong enough profiles, used for large window frame and even curtain wall. They is said to be much better than aluminum, wood and plastic. With excellent expansion and contraction performance, can withstand a variety of climatic conditions, from the Arctic cold to the desert heat and wet seaside. Can be painted or later processed to form a wooden appearance. Polyurethane composite window frame has the following basic characteristics: high heat insulation GRPU profile and solid wood, PVC, has a very low thermal conductivity, 0.22 W / mK at room temperature, only about 1 / 700 of aluminum alloy, is an excellent heat insulation material. The linear thermal expansion coefficient of low thermal expansion GRPU is about 710-6 / K, which is much lower than that of aluminum alloy and similar to the linear thermal expansion coefficient of the wall. Therefore, when the temperature changes, the frame of GRPU material will not produce gaps with the wall, and ensures the heat insulation of the whole window in the environment with large temperature difference. Corrosion resistant GRPU profiles have strong corrosion resistance to most acid, alkali, salt, organic matter, sea water, humid air; and no rust immortality, corrosion resistance is better than other material door and window profiles. Especially suitable for coastal, corrosive, and generally wet places. GRPU profile is a good insulating material without electromagnetic waves and reflecting radio waves; it has special uses for communication system buildings.2) Polyurethane / glass fiber composite material