Teflon or PTFE (more commonly referred to as Teflon) is […]
Teflon or PTFE (more commonly referred to as Teflon) is a particularly versatile ivory white and opaque plastic fluoropolymer; it is made from free radical polymerization of many tetrafluoroethylene molecules and is suitable for aviation Aerospace, food and beverage industry, pharmaceutical and telecommunications industries such as the wide range of applications.
If you want to invent a highly flexible, chemically resistant, heat resistant, non-sticky and resistant material, and have not yet finished, you will want to be able to come up with an almost as good material as PTFE in these areas.
PTFE has a melting point of about 327 ° C, pure PTFE is almost completely chemically inert, extremely insoluble in most solvents or chemicals, and is thermally stable enough to be used between -200 ° C and + 260 ° C without degradation.
Other useful PTFE properties are high in bending strength even at low temperatures, high resistance and dielectric strength, water resistance (due to the high electronegativity of fluorine) and low coefficient of friction. PTFE density is also high, 2200 kg/m3.
In fact, in addition to some chemical reagents and solvents, the only factor in the use of PTFE is that it does not have good resistance to high-energy radiation, which will lead to the destruction of PTFE molecules.
In addition to pure PTFE, there are two copolymers and PTFE as effective, but with some different properties.
PFA or perfluoroalkoxy has very similar properties to PTFE because it has very chemical resistance, flexibility and thermal stability (continuous use up to 260 degrees Celsius), but PTFE does have a certain creep tendency, PFA has Creep resistance, melt processing, injection molding, extrusion, compression molding, blow molding and transfer molding.
TFM, known as PTFE-TFM, is a polytetrafluoroethylene with perfluoropropyl vinyl ether as an additional modifier, producing a more dense material, which is also more resistant to corrosion, such as PFA creep resistance and weldable.