In contrast to PTFE, our thermoplastically processable fluoroplastics are available in granulate form. This allows the material to be processed using so-called screw extruders. This has three essential advantages regarding material processing:
- In theory, endless strand lengths can be produced using continuous granule feed
- Extruder control can be fully automated
- Easier recycling of the material
The key thermo fluoroplastics:
PFA (Perfluoroalkoxy Alkane) is a further development of PTFE. The chemical properties are largely similar to those of PTFE, but PFA is thermoplastically processable and can therefore be more easily manufactured in specific quantities. The disadvantage is its relatively high price.
FEP (Fluorinated Ethylene Propylene) was developed in 1956 to combine the excellent properties of PTFE with the simplification of thermoplastic processing. Using screw extrusion, FEP can be formed into sections of almost any length. FEP is a good insulation material due to its dielectric strength. It is optically more transparent than conventional PTFE.
ETFE (Ethylene Tetrafluoroethylene) is a PTFE derivative. Films of this plastic are light in weight and have high light and ultraviolet transmission. ETFE is more resistant to beta and gamma radiation than PTFE, especially when exposed to oxygen.
PVDF (Polyvinylidene Fluoride) has greater stiffness and strength than PTFE. However, its sliding and electrical insulation properties are somewhat poorer. The thermal application range of PVDF is approximately -30 °C to +150 °C, which is significantly lower than that of PTFE.