IUPAC Name
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Cas Number
26655-00-5
HS Code
39046990
Formula
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Appearance
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Common Names
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Packaging
25 Kg Jerrycan
PFA is a co-polymer product of PTFE. The co-monomer perfluoroalkyl vinyl ether interferes in the crystallisability and molecular weight to achieve good mechanical properties and melt processability without sacrificing thermal performance and chemical resistance. The key advantage of PFA is its melt processability because of lower melt viscosity than PTFE.
Because of the high strength between Carbon, Fluorine and Oxygen atoms, PFA exhibits similar properties to PTFE over a large range of temperatures. Some other differences from PTFE are: Good permeability resistance because of lower void content and better deformation (Cold flow) resistance.
PFA has an outstanding chemical resistance, even at elevated temperature. It is resistant to strong mineral acids, inorganic bases, and inorganic oxidizing agents and to most of the organic compounds and their mixtures common in the chemical industry.
PFA is commonly used as material for piping and fittings for aggressive chemicals, as well as corrosion-resistant lining of vessels in the chemical-processing industry. Typical applications are in the construction of gas scrubbers, reactors, containment vessels, and piping.
PFA is also used as inert material for sampling equipment in analytical chemistry and for geochemical or environmental in situ studies on field site when it is particularly important to avoid chemical contaminations of metallic ions at trace level.