PTFE permanent building membrane material (G-class membrane material)

PTFE membrane material is a material made by coating ultra-fine glass fiber fabric with polytetrafluoroethylene resin (also known as G-type membrane material). The film material has good welding performance, excellent ultraviolet resistance, aging resistance and flame retardancy. In addition, its anti fouling and self-cleaning properties are the best among all building membrane materials, but its flexibility is poor, construction is difficult, and the cost is high. DuPont, Corning Fiberglass, Baird Construction, and Chemical Fiber Weaving jointly developed permanent film materials in the United States. The processing method involves rapidly immersing fiberglass fabric into PTFE melt multiple times, resulting in a uniform PTFE coating on both sides of the fabric, thus giving birth to permanent PTFE membranes. Subsequently, permanent membrane structures became popular in the United States, and many scholars conducted in-depth research on membrane structures. 20 years later, tracking and testing results showed that the mechanical properties and chemical stability indicators of this membrane material only decreased by 20% to 30%, and the color remained almost unchanged. The surface of the membrane is smooth and elastic, making it extremely difficult for dust and chemical particles in the atmosphere to adhere and penetrate. After being washed by rainwater, the building membrane can restore its original clean surface layer and transparency, which demonstrates the strong vitality and broad market prospects of PTFE membrane material. At present, the development and application of this membrane material are relatively mature abroad, and there are many manufacturers, such as Taikangli Company in the United States, Mehler Company and Verseidag Company in Germany, ZTE Chemical Industry Co., Ltd. in Japan, ObeiKan Company in Saudi Arabia, and Make Company in China.

The biggest characteristics of PTFE building membrane materials are: light weight, high strength, fire-resistant and flame-retardant (with a fire rating of Class A), good self-cleaning (the membrane material will change from a soil yellow color at the beginning of installation to a snow white color when exposed to the sun, and will remain so for a long time), not affected by ultraviolet radiation, fatigue resistance, torsion resistance, aging resistance, and long service life. Has high light transmittance and minimal heat absorption. It is precisely because of the invention of this cross era membrane material that membrane structure buildings have become modern permanent buildings.With the arrival of domestic PTFE membrane materials, the cost of PTFE membrane structure buildings has been significantly reduced. This type of membrane structure building form is becoming more and more widely used in China, accepted by architects and owners, and is also a trend in industry development. Currently, it is widely used in roof systems of sports venues, airport halls, exhibition centers, platforms, landscape pavilions, etc.