PCTFE is a kind of material belongs to the polymer of trichloroethylene, the material property is thermoplastic resin. Due to the introduction of c-cl bonds in the molecular structure of PCTFE, it has lower chemical inertia, heat resistance, rigidity and creep resistance than other materials such as tetrafluoroethylene. PCTFE does not creep or brittle in liquefied natural gas or liquid oxygen. In most of the non-metallic materials, the water vapor permeability is low, will not penetrate into the gas, there is no combustion, belongs to the sealing polymer. Due to its remarkable low temperature resistance, it can reach -270℃ under certain conditions.

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