ECTFE-based plastics

Tribology data for ECTFE-based plastics are found in Table 11.5. 

The family of FPs, also called fluorocarbon plastics, is based on polymers made of monomers composed of fluorine and carbon may also include chlorine atoms in their structure. Specific types include polytetrafluoroethylene (PTFE), polytetrafluoroethylene-cohexafluoro-propylene or fluorinated ethylene propylene (FEP), polytrafluoroethylene-coperfluoropropylvinyl ether (PFA), ethylenetetrafluoroethylene (ETFE). polychlorotrifluoroethylene (PCTFE), ethylene-chlorotri-fluoroethylene (ECTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), perfluoromethylvinylether (PFMV), perfluoroalkoxy (PFA), etc. 

Perfluoropolymers, namely PFA and PTFE, have been the most frequently used plastics in high purity applications (Figs. 15.6 - 15.11). PVDF, ETFE, and ECTFE are used in lower-purity water systems or with less aggressive chemicals. Corrosive acids and bases are handled through perfluoropolymer tubes and components. A great deal of work has been concentrated by fluoropolymer manufacturers to eliminate various forms of impurities from fluoropolymers. 

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