FEP Cables Exporters in South Africa

FEP is a copolymer of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP), first produced by DuPont in 1956 (Teflon™ FEP) to reduce PTFE’s high crystallinity and melt viscosity. This improves FEP processing characteristics while maintaining high perfluorination. Bulky FEP perfluoromethyl groups produce defects in solid fluoropolymer crystallites, reducing polymer melting point, impeding chain slip, and reducing solid cold flow (Drobny, 2001). FEP combines the unique mechanical andchemical properties of PTFE with the melt-processability of more conventional polymers. FEP has a maximum service temperature of 204°C, and a slightly higher coefficient of friction than PTFE. It is used in biomedical devices in place of PTFE.