Glass fiber reinforced plastic doors and windows profile is the use of alkali glass fiber roving and its fabric as a reinforcing material, the use of unsaturated resin as a matrix material, through a special process of these two materials composite, and add other mineral filler, and then heat curing, Into a variety of different sections of the fasting profiles made of doors and windows profiles.
Glass and steel doors and windows at home and abroad development
(1) foreign development. With the development of doors and windows market, PVC plastic doors and windows have been unable to meet the needs of multi-functional. In the early 1980s, Canada first successfully developed fiberglass doors and windows.
Fiberglass is a new type of composite material developed abroad at the beginning of the 20th century. Its density is 1.5 ~ 2.0g / cm³, 3 to 4 times lighter than steel, and 1.7 times higher than steel, mechanical properties and physical properties are good, it is widely used in national defense, aviation, shipbuilding, automobile, tourism, construction, etc. Various fields, to become the 21st century high-quality composite materials.
Made of fiberglass windows and doors, developed in some areas abroad earlier, and the development of fast. To the early 1990s, fiberglass doors and windows have been rapidly extended to the United States, Russia, Germany and Japan and other countries. Fiberglass doors and windows can replace wood, steel, aluminum, plastic doors and windows, in terms of its chemical, mechanical and physical properties, in the construction of the doors and windows of the market competition, with strong strength.
(2) the status quo of China's development. From the market development, glass doors and windows have begun to take shape. As the glass fiber reinforced plastic material unique high strength, corrosion resistance, insulation, insulation, sound insulation and long life, and other advantages, the community recognized. FRP doors and windows in China's northern region has been rapid promotion, the market has begun to take shape.
From the market layout, China's glass fiber reinforced plastic doors and windows uneven distribution. China's glass fiber reinforced plastic doors and windows originated in the cold winter in the north, affected by local policies, the current market is mainly concentrated in North China, Shanxi and Shanghai and other places. And in the construction industry also need the South China, Jiangsu and Zhejiang and other places have little application. This phenomenon is mainly due to the community of glass fiber reinforced plastic doors and windows of the cognitive is not enough
From the production situation, China's glass steel doors and windows have achieved industrial scale production. At present, the domestic glass fiber reinforced plastic doors and windows production enterprises more than 30, doors and windows profiles pultrusion more than 150 production lines. But the size of the production enterprises, the technical level of uneven, a considerable part of the enterprises ignore the glass and steel doors and windows profiles of production technology and quality assurance, glass steel pultruded doors and windows profiles are organic, inorganic combination into a multi-functional composite materials, it is not like the general glass Materials, do not grasp the pultrusion process technology and process recipes can not pull out qualified products.
Advantages of FRP profiles
(1) light high strength. Relative density of 1.5 ~ 200g / cm³, only carbon steel 1/4 ~ 1/5, but the tensile strength is close, even more than carbon steel, and the specific strength can be compared with the high alloy steel. Therefore, in the aviation, rocket, spacecraft, high pressure vessels and other products need to reduce their weight, have excellent results, some epoxy FRP tensile, bending and compression strength can reach more than 400MPa.
(2) good corrosion resistance. FRP good corrosion-resistant materials, the atmosphere, water and the general concentration of acid, alkali, salt and a variety of oils and solvents have a better resistance. Especially for the work environment more harsh working conditions. Has been applied to all aspects of chemical corrosion, is replacing carbon steel, stainless steel, wood, nonferrous metals and so on. (3) good insulation performance. Is an excellent insulating material used to make insulators. High frequency can still protect the good dielectric, microwave permeability is good, has been widely used in radar radome.
(4) good insulation performance. FRP thermal conductivity is low, room temperature is 0.3 ~ 0.4W / (㎡ · K), only metal 1/100 ~ 1/1000, is an excellent insulation material. In the case of instantaneous ultra-high temperature, is the ideal thermal protection and ablation materials, to protect the universe at 2000 ℃ to withstand high-speed airflow erosion.
(5) can be designed to be good.
Can be based on the need to flexibly design a variety of structural products to meet the requirements, and to ensure that the product has a good overall performance.
You can fully select the material to meet the performance of the product, such as corrosion resistance can be designed, resistance to instantaneous high temperature products, the product direction is particularly high strength, good dielectric and so on.
(6) excellent craftsmanship.
Can be based on the shape of the product, technical requirements, use and quantity to the flexibility to select the molding process.
The process is simple, can be a molding, the economic effect is outstanding, especially for the shape of complex, not easy to shape a small number of products, but also highlights its superior technology.
(7) rich colors. Fiberglass doors and windows can be based on different customer needs, interior decoration, architectural style spray on the surface of various colors, high-grade FRP can choose a reasonable ratio of materials directly pull out the color you need to meet people's personalized aesthetic needs , To avoid the long-term application of wear and tear after the problem.