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Polychlorotrifluoroethylene (PCTFE)

Properties and Applications

Polychlorotrifluoroethylene (PCTFE) is a crystal clear, non-flammable, and semicrystalline high-performance thermoplastic that has exceptional moisture barrier properties, good heat and chemical resistance and excellent melt processability.

It offers a unique balance of mechanical, chemical, and electrical properties not encountered in any other engineering thermoplastic. The chlorine atom in the polymer structure reduces the crystallinity, lowers the melting point and provides stronger intermolecular interaction which results in higher tensile strength, higher creep resistance and less water vapor and gas permeability compared to PTFE. However, its chemical resistance and electrical properties are not as good as those of PTFE, but are still better than those of most other thermoplastics.
PCTFE is mainly used as moisture protective film or coating in pharmaceutical blister packaging due to its excellent water vapor barrier properties and good chemical stability. Other applications include chemical resistant tubes, valves, tank liners, O-rings, seals and gaskets.

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