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Can polytetrafluoroethylene be dissolved by Freon?

2008-02-18View Original

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I have a question for everyone. I designed a compressor pipeline in which ball valves made of polytetrafluoroethylene are used; fluorine gas flows through this pipeline. The workshop asked me whether polytetrafluoroethylene could be dissolved by fluorine gas. I wonder if anyone has encountered this problem
Reply #22008-02-18
Polytetrafluoroethylene has extremely strong corrosion resistance! However, it is not resistant to high temperatures, and it exhibits cold flow under high pressure.
Reply #32008-02-18
The tetrafluoroethylene production plant uses the hydrosteam-diluted cracking method with dichlorodifluoromethane (HCFC-22) to produce tetrafluoroethylene (TFE), which is then converted into polytetrafluoroethylene (PTFE) through polymerization, condensation, separation, and drying processes. The main raw material is F-22 (Freon-22), which is used to produce monomers through cracking; these monomers are then polymerized to form PTFE, which is therefore resistant to Freon.
Reply #42008-02-18
Thanks to the two guys upstairs: lol

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