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.

PBT is closely related to other thermoplastic polyesters.

+ k5 p  k# O* n6 K4 r$ e- DPBT 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).
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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。