In recent years, building energy efficiency has become an important part of international sustainable development. Doors and windows, exterior walls, roof and ground are the four major parts of the building's main energy consumption, of which doors and windows have the worst thermal insulation.
Recently, a “black technology” for energy-saving doors and windows won the Innovation Technology Leadership Award in the 2020 “Demonstration Project Innovative Technology” selection activity of China Construction Association.
This glass fiber reinforced polyurethane pultruded profile, jointly developed by SHJR and the American polyurethane technology giant, is a door and window profile produced by an advanced injection dipping pultrusion process using glass fiber as a reinforcing material and polyurethane as a matrix. Polyurethane, the raw material for the production of glass fiber reinforced polyurethane composites, is petroleum-derived and does not consume earth resources. The data shows that the production energy consumption of glass fiber reinforced polyurethane composites is only 1/60 of that of aluminum alloys. The production process has no volatile components and no industrial waste water discharge. The finished products have good processing performance, convenient assembly, rich appearance, and no volatile products. Sexual components; and there is a complete unified recycling system for waste materials, grinding into attached frames, etc., which can be recycled.
According to reports, the glass fiber reinforced polyurethane composite material is light in weight and high in strength. The bending strength is as high as 1442Mpa, which is 6-8 times that of aluminum alloy and 3-7 times that of steel. It is mainly used for lightweight cars, wind power blades, and aerospace. And other fields. Because of its excellent weather resistance, acid and alkali resistance, and salt spray resistance, it is widely used in harsh environments, such as seawalls, wind power, and ocean engineering. At the same time, polyurethane materials are widely used in all aspects of direct human contact, including the medical field, and are recognized as safe and harmless materials with zero volatile components.
In addition, glass fiber polyurethane doors and windows have excellent fire resistance. With various fireproof glass, the fire integrity can be achieved for 1 to 1.5 hours. It has the advantages of heat preservation and fire prevention, which can be described as the "black technology" of doors and windows.