请问T400跟PBT怎么区别

wangyanhua

请问T400跟PBT怎么区别

逆风飞扬

Polybutylene terephthalate (PBT) is a plastic that is a thermoplastic crystalline polymer, and a type of polyester. 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.
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PBT is closely related to other thermoplastic polyesters.
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% H7 t, V$ E9 lPBT has slightly lower strength and rigidity, slightly better impact resistance, and a slightly lower glass transition temperature. PBT are sensitive to hot water above 60C (140F).

PBT need UV protection if used outdoors, and most grades of these polyesters are flammable, although additives can be used to improve both UV and flammability properties.

逆风飞扬

T400有良好弹性。