Table 1.
Perfluorinated | Partially fluorinated | ||||||
---|---|---|---|---|---|---|---|
PTFE | FEP | PFA | PCTFE | ETFE | PVF | PVDF | |
Monomer unit | TFE | TFE + HFP | TFE + PPVE | CTFE | Ethylene + TFE | VF | VDF |
Density (g·cm−3) | 2.16 | 2.15 | 2.15 | 2.10 | 1.70 | 1.40 | 1.75 |
Melting point (°C) | 327 | 260 | 310 | 210 | 270 | 190 | 170 |
Continuous-use temperature (°C) | 260 | 200 | 260 | 150 | 150 | 107 | 150 |
Tensile strength (MPa) | 20–35 | 20–30 | 25–35 | 34–41 | 38–48 | 50–110 | 30–70 |
Refractive index | 1.35 | 1.34 | 1.34 | 1.44 | 1.40 | 1.46 | 1.42 |
Dielectric constant at 1 MHz | 2.1 | 2.1 | 2.1 | 2.6 | 2.5 | 8.5–11.0 | 8.4 |
Examples of typical applications | Membranes, wire and cable insulation, chemical resistant components | Chemical resistant components, cable insulation | Chemical resistant components, cable insulation | Packaging, barrier, sealing films | Moulded component, wire and cable insulation | Packaging, protecting films, solar panels | Sensors, actuators, wire and cable insulation |
References | [16,17,18,19] | [20,21,22,23] | [23,24,25,26] | [27,28,29] | [30,31,32,33] | [34,35,36,37] | [13,38,39,40] |