| General description: PCTFE (polychlorotrifluoroethylene) is a semi-crystalline polymer. As a rigid material, it appears to have a slightly yellowish/whitish translucency or is transparent depending on the fabrication process used. In comparison with PTFE, PCTFE is significantly harder and more dimensionally stable. It is the hardest of the fluoroplastics. Even at very low temperatures of around –255 °C, it retains its excellent dimensional stability. It also has the lowest gas permeability rate. PCTFE can be processed using injection moulding, extrusion presses, and thermoplastic extrusion. Characteristics and properties: - Very wide temperature range - including very low temperatures - of –255 to +150 °C (brief exposure to +200 °C)
- Very good mechanical strength; in particular, low creeping under compressive stress
- Non-flammable, even at high oxygen concentrations (100% oxygen index limit)
- High chemical resistance to mineral acid and a number of organic acids
- Excellent resistance to ageing
- Practically no moisture absorption and therefore very dimensionally stable
- Impermeable to water and steam
Information provided by Angst + Pfister |
