Perfluoroalkoxy

Perfluoroalkoxy

Perfluoroalkoxy, Teflon-PFA, or PFA is a type of fluoropolymer with properties similar to polytetrafluoroethylene (PTFE). It differs from the PTFE resins in that it is melt-processable using conventional injection molding and screw extrusion techniques.

PFA was invented by DuPont and is sold under the brandname "Teflon-PFA". Teflon is better known as the trade name for a polymer with similar properties, PTFE. A similar product is available from Daikin using the brandname Neoflon-PFA or from Solvay Solexis using the brandname Hyflon-PFA.

PFA is very similar in composition to the fluoropolymers PTFEand FEP (fluorinated ethylene-propylene).PFA and FEP both share PTFE's useful properties of low coefficient of friction and non-reactivity, but are more easily formable. FEP is softer than PTFE and melts at 260 °C; it is highly transparent and resistant to sunlight. [ [http://www.texloc.com/closet/cl_fep_properties.htm FEP Detailed Properties] Parker-TexLoc, 13 April 2006. Retrieved 10 September 2006. ]

Another version of polytetrafluoroethylene perfluoro methylvinylether, with a different ratio of PTFE and MVE monomers from PFA, is MFA.

Notes


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