聚酯，由多元醇和多元酸缩聚而得的聚合物总称。主要指聚对苯二甲酸乙二酯(PET)，习惯上也包括聚对苯二甲酸丁二酯 (PBT)和聚芳酯等线型热塑性树脂。是一类性能优异、用途广泛的工程塑料。也可制成聚酯纤维和聚酯薄膜。聚酯包括聚酯树脂和聚酯弹性体。聚酯树脂又包括聚对苯二甲酸乙二酯(PET)、聚对苯二甲酸丁二酯(PBT))和聚芳酯(PAR)等。聚酯弹性体(TPEE)一般由对苯二甲酸二甲酯、1,4-丁二醇和聚丁醇聚合而成，链段包括硬段部分和软段部分，为热塑性弹性体。

Polyester, a general term for polymers obtained by condensation of polyols and polyacids. It mainly refers to polyethylene terephthalate (PET), which also includes polybutylene terephthalate (PBT) and tianchuangd.89ix.comtianchuang.89ix.comtongfengqiw.89ix.comtongfengqi.89ix.comchuanxian.89ix.c

ompvcguanjian.89ix.compolyaromatic ester isolinear thermoplastic resins. It is a kind of engineering plastics with excellent performance and wide application. It can also be made into polyester fibers and polyester films. Polyesters include polyester resins and polyester elastomers. Polyester resins include polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and polyaromatic ester (PAR). Polyester elastomer (TPEE) is usually synthesized from dimethyl terephthalate, 1,4-butanediol and polybutanol. The chain consists of hard segment and soft segment. TPEE is a thermoplastic elastomer.