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Nafion is a sulfonated tetrafluoroethylene based fluoropolymer-copolymer discovered in the late 1960s by Walther Grot of DuPont. It is the first of a class of synthetic polymers with ionic properties which are called ionomers.his form of Nafion, referred to as the neutral or salt form, is finally converted to the acid form containing the sulfonic acid (-SO 3 H) groups. Nafion can be cast into thin films by heating in aqueous alcohol at 250 Â°C in an autoclave.
PTFE (PolyTetraFluoroEthylene) (also known as Teflon) is a fluorocarbon-based conformal coating. PTFE coatings can provide a low co-efficient of friction or slipperiness, corrosion and chemical resistance, heat resistance, dielectric stability, and chemical inertness to the circuit assembly.ikipedia definition: Conformal coating material is applied to electronic circuitry to act as protection against moisture, dust, chemicals, and temperature extremes that, if uncoated (non-protected), could result in damage or failure of the electronics to function.