has excellent weather resistance and good wear resistance and stain resistance. It is used as a surface film for industrial, architectural and decorative building materials.
PTFE can not be melt processed. The resin must be compressed and then sintered to produce useful plastic.
FEP method. It is squeezed out and injection molded. It has the chemical resistance of PTFE, mechanical and electrical properties, but the temperature range is narrower - the maximum temperature of 400 ° F. Chemical resistant tanks and containers commonly used in chemical corrosive chemical industries.
PVDF is not a processable fluoropolymer that can be injected and compression molded and screw extruded. Better than PTFE, FEP and PFA, more resistant to cold flow. It has a lower useful temperature range. The glass backing PVDF plate is made of a liner for the ship like FEP. PVDF pipes and fittings are one of the most economical and chemically resistant high temperature solid piping systems.
PFA is also meltable. Its properties are characteristic of PTFE Tubing
, including the resistance of almost all chemicals, the useful temperature range of PTFE, weather resistance, low coefficient of friction and excellent electrical insulation properties. However, it is more expensive than PTFE and FEP resins.