3M™ Dyneon™ Fluoroplastic PFA 6502TZ is a fully fluorinated copolymer of tetrafluoroethylene and perfluorovinylether. The resin has been developed for transfer molding and extrusion of claddings and linings. The easier processing under low shear rates was one goal and PFA 6502TZ was designed to be used in roughest environments, e. g. in the chemical industry, where high strength and extreme thermal and chemical resistance are required.
PFA 6502TZ is characterized by the following features:
broad processing window
improved mold release property
improved stress crack resistance
3M™ Dyneon™ Fluoroplastic PFA 6502TZ should be processed according to the standard conditions outlined in the Dyneon PFA Processing Guideline Brochure. All machine parts coming into contact with the melt should be made from highly corrosion resistant materials – usually high-nickel alloys such as Inconel 625, Haynes 242, Hastelloy C and Reiloy. The normal chrome-nickel steels, such as 1.4571, have only limited suitability.
Processing temperatures (melt temperatures) up to about 400 °C are possible, depending on the particular process and part being produced.
PFA 6502TZ, with a Melt-Flow-Index (372 °C/5 kg) of 2 g/10 min, is best processed under low shear conditions such as thick walled extrusion, transfer molding, compression molding or blow molding.