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PBT(Polybutylene terephthalate) is a thermoplastic engineering polymer that is used as an insulator in the electrical and electronics industries.
PBT is resistant to solvents, shrinks very little during forming, is mechanically strong, heat-resistant up to 150°C(or 200°C with glass fibre reinforcement) and can be treated with flame retardants to make it noncombustible.
PBT is used for housings in electrical engineering, but also in automotive construction as plug connectors and in households for example in showerheads or irons. It is also found processed into fibers in toothbrushes, false eyelashes and is used in the keycaps of some high end computer keyboards becaused the texture is highly resistant to wear and discoloration due to UV radiation.
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