Introduction to ETFE membrane materials

Made directly from ETFE (ethylene tetrafluoroethylene copolymer) raw materials. ETFE not only has excellent impact resistance, electrical performance, thermal stability, and chemical corrosion resistance, but also has high mechanical strength and good processing performance. In recent years, the application of ETFE membrane materials has shown strong advantages and market prospects in many aspects, replacing other products. This type of film material has excellent transparency and is known as "soft glass". It is lightweight and only 1% of glass of the same size; Good toughness, high tensile strength, not easily torn, and ductility greater than 400%; Strong weather resistance and chemical corrosion resistance, with a melting temperature of up to 200 ℃; Has good acoustic performance. The self-cleaning function makes the surface less prone to contamination, and rainwater can wash away a small amount of dirt, with a cleaning cycle of about 5 years. In addition, ETFE film can be prefabricated into thin film bubbles, which is convenient for construction and maintenance. ETFE also has its shortcomings, such as easily damaging materials and causing air leaks in the external environment, and high maintenance costs. However, with the construction of large sports venues, tourist areas, waiting halls, etc., ETFE has highlighted its advantages. At present, there are few companies producing this type of membrane material, and the research and application of this membrane material in developed countries abroad has only been around for a decade. The membrane structures of the "Bird's Nest" and "Water Cube" venues for the Beijing Olympic Games use ETFE membrane materials, which are currently the largest ETFE membrane structure buildings in China. The membrane materials are imported products. The "Bird's Nest" adopts a double-layer membrane structure, with ETFE on the outer layer to prevent rain, snow, and ultraviolet rays, and PTFE on the inner layer to achieve insulation, anti condensation, sound insulation, and light efficiency