PTFE air filter membrane Among fluoroplastics, polytetrafluoroethylene consumes the most and is the most widely used. It is an important variety of fluoroplastics.
The chemical structure of polytetrafluoroethylene is formed by replacing all hydrogen atoms in polyethylene with fluorine atoms.
Product name: Polytetrafluoroethylene English name: Polytetrafluoroethylene Alias: PTFE; Teflon; Teflon; teflon; Teflon; F4; King of Plastics; Teflon (Japanese) [English abbreviation is PTFE, the brand name is Teflon?, the Chinese translation is different in different places: Mainland is translated as Teflon?, Hong Kong is translated as Teflon?, Taiwan is translated as Teflon?] Molecular formula: [CF2CF2]n Production method: Polytetrafluoroethylene is made of Tetrafluoroethylene is produced by free radical polymerization.
Industrial polymerization reactions are carried out with stirring in the presence of a large amount of water. The PTFE air filter membrane is used to disperse the reaction heat and facilitate temperature control.
Polymerization is generally carried out at 40 to 80°C and a pressure of 3 to 26 kgf/cm2. Inorganic persulfate and organic peroxide can be used as initiators, or a redox initiating system can be used.
Each mole of tetrafluoroethylene releases heat of 171.38kJ during polymerization.
Dispersion polymerization requires the addition of perfluorinated surfactants, such as perfluorooctanoic acid or its salts.
Uses: PTFE air filter membrane can be made into rods, plates, pipes, films and various special-shaped products, and is used in aerospace, chemical industry, electronics, machinery, medicine and other fields. </p
