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Perfluoroalkoxy alkane
| PFA | |
|---|---|
| |
| Density[1] | 2150 kg/m3 |
| Flexural modulus(E) | 586 MPa |
| Tensile strength(t) | 24 MPa |
| Elongation at break | 300% |
| Folding endurance | No break |
| Notch test | |
| Melting point | 315 °C |
| Maximum operating temperature | 260 °C |
| Water absorption (ASTM) | <0.03 % after 24 hours |
| Dielectric constant (Dk) at 1MHz | 2.1 |
| Dissipation factor at 1MHz | 0.0001 |
| Arc resistance | < 180 seconds |
| Resistivity at 50% R. H. | > 1016 Ω m |
Perfluoroalkoxy alkanes (PFA) are fluoropolymers. They are copolymers of tetrafluoroethylene (C2F4) and perfluoroethers (C2F3ORf, where Rf is a perfluorinated group such as trifluoromethyl (CF3)). The properties of these polymers are similar to those of polytetrafluoroethylene (PTFE). Compared to PTFE, PFA has better anti-stick properties and higher chemical resistance, at the expense of lesser scratch resistance.[2]
- ^ "PTFE, FEP, and PFA Specifications". Boedeker Corp. 2007. Retrieved 2007-12-22.
- ^ "PTFE, FEP, PFA". Menden, Germany: TechnoFinish GmbH & Co. KG. Retrieved July 4, 2023.
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