| General description: PFA is a semi-crystalline copolymer manufactured through the copolymerization of tetrafluorethylen and perfluorovinyl ether. Its melt viscosity is several powers of ten lower than that of PTFE. Unlike the sintered PTFE, PFA can be processed using traditional thermoplastic processing methods such as screw extrusion, transfer moulding, and injection moulding. PFA is also thermo-formable and weldable. The chemical and thermal resistance, anti-adhesion behaviour, and dielectric properties of PFA are largely the same as those of PTFE. In comparison with PTFE, PFA is harder and has better dimensional stability. In addition, the cold flow tendency of PFA is lower. Characteristics and properties: - Excellent service temperature range (long-term exposure to temperatures from –200 to +260 °C)
- Excellent and universal resistance to chemicals, almost the same as that of PTFE
- Exceptional mechanical properties, harder and more dimensionally stable than PTFE, with a significantly better bending fatigue strength
- Extremely high UV- and weather resistance
- High air permeability
- Very good dielectric properties
- Anti-adhesive surface properties
- Flame-retardant
Information provided by Angst + Pfister |
