PFA
Non Melt
Melt
Perfluoroalkoxy alkanes (PFA) is a copolymer of hexafluoropropylene and perfluoroethers. It was developed after the discovery of PTFE by the same producer (DuPont Co.). PFA has very similar properties to PTFE, though the biggest difference between PTFE and PFA is that PFA is melt processed. This is accomplished through conventional injection molding as well as screw extrusion techniques.
PFA offers the excellent combination of properties characteristic of Fluoropolymers: non-ageing, chemical inertness, exceptional dielectric properties, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption and excellent weather and UV resistance. PFA has a higher melting point and higher heat resistance than FEP. PFA provides superior creep resistance at high temperatures, excellent low-temperature toughness, and exceptional flame resistance.
Working Temperature Range: -265deg. C to 260deg. C
Classification:
- Extrusion grades
- Molding grades
- Dispersion grades
- Coating grades
Applications:
Grades (ASTM D 3307): | Series G1 | Series G2 | Series G3 | Series G4 | Series G5 | Series G6 | Series G7 |
Appearance | Translucent granules | Translucent granules | Translucent granules | Translucent granules | Translucent granules | Translucent Liquid | White/Gray Powder |
MFR (g/10min) | 1.1-3.0 | 3.1-8.0 | 8.1-12.0 | 12.1-18.0 | 18.1-36.0 | Solid mass: 52.0-55%, SSG 1.40-1.43, pH 8-9 | Bulk density 530-750 |
Molecular Weight | Very High | High | Medium | Medium | Low | Low | Medium |
Applications | Excellent stress crack resistance for lining, diaphragms | Good stress cracking resistance for tubing, molded articles, chemical linings | Jacketing and insulation with improved stress resistance, etc | Medium to heavy wall coating, Tubing, Hoses, Films, Monofilaments | Thin wall insulation (0.1-0.3mm), Small guage wire coating, Tubing’s, Films <=250μm, Monofilaments | Glass fabric coating, release coating formulations | High build coatings |
Fabrication Techniques | Transfer, compression molding | Extrusion, Injection, compression molding | Extrusion, Injection, blow molding | Extrusion, Injection, blow molding | Extrusion, Injection | Gun spray, Dip Coating | Electrostatic coatings, Roto lining, Fluidized bed coating |