Classification and performance of PTFE board

Polytetrafluoroethylene board (also called tetrafluoroethylene board, Teflon board, Teflon board) is divided into two types: molding and turning. Made by cooling. The PTFE turning board is made of PTFE resin by pressing, sintering and peeling. Its products have a wide range of uses and excellent comprehensive properties: high and low temperature resistance (-192℃-260℃), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non-sticking, Non-toxic and other excellent characteristics.

Polytetrafluoroethylene sheet is a polymer compound formed by polymerization of tetrafluoroethylene. Its structure is simplified as -[-CF2-CF2-]n-, which has excellent chemical stability and corrosion resistance (polytetrafluoroethylene Referred to as PTFE or F4, it is one of the more corrosion-resistant materials in the world today. “Plastic King” is the common name for polytetrafluoroethylene. It is a kind of plastic with better corrosion resistance. It is not affected by known acids, alkalis, The corrosion of salt and oxidant is helpless even with aqua regia, so it is named Plastic King. Except molten sodium and liquid fluorine, it is resistant to all other chemicals. It is widely used in various sealing materials that require resistance to acids, alkalis and organic solvents. Performance, high lubricity, non-stick, electrical insulation, good aging resistance, excellent temperature resistance (can work at a temperature of +250℃ to -180℃ for a long time). PTFE itself is not toxic to humans, but it is Perfluorooctanoate (PFOA), one of the raw materials used in the production process, is thought to have carcinogenic effects.

Temperature: -20～250℃ (-4～+482°F), allowing rapid cooling and heating, or alternate operation of cooling and heating.

Pressure -0.1～6.4Mpa (full negative pressure to 64kgf/cm2) (Fullvacuumto64kgf/cm2)

Its production has solved many problems in my country’s chemical, petroleum, pharmaceutical and other fields. Polytetrafluoroethylene seals, gaskets, gaskets. Polytetrafluoroethylene seals and gaskets are made of suspension polymerized polytetrafluoroethylene resin molding. Compared with other plastics, PTFE has the characteristics of chemical resistance, and it has been widely used as a sealing material and filling material. Its complete thermal decomposition products at about 500 degrees Celsius are tetrafluoroethylene, hexafluoropropylene and octafluorocyclobutane. These products will decompose highly corrosive fluorine-containing gases at high temperatures.

The use of PTFE sheet

Various types of PTFE products have played a pivotal role in the national economy such as chemical industry, machinery, electronics, electrical appliances, military industry, aerospace, environmental protection and bridges. Tetrafluoroethylene board is suitable for the temperature of -180℃~+250℃. It is mainly used as electrical insulation materials and linings in contact with corrosive media, supporting sliders, rail seals and lubricating materials. Rich cabinet furniture uses it in light industry. , Widely used in chemical, pharmaceutical, dye industry containers, storage tanks, reaction towers, large pipelines anticorrosive lining materials; aviation, military and other heavy industry fields; machinery, construction, traffic bridge sliders, guides; printing and dyeing, light industry, textiles Anti-adhesive materials for the industry, etc.