多元共聚酯的制备和性能研究  

Synthesis and Properties of Segmented Copolyester

作　　者：赵蕴慧[1] 盛京[1] 贾宏涛[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《中国塑料》2002年第2期33-36,共4页China Plastics

基　　金：中国石化集团公司资助项目

摘　　要：采用熔融酯交换法制备了以聚对苯二甲酸丁二醇酯(PBT)为硬段,对苯二甲酸乙二醇酯、间苯二甲酸乙二醇酯和癸二酸乙二醇酯的无规共聚酯(PETIS)为软段的共聚酯,考察了共聚酯熔融结晶行为、拉伸性能和流变性能。结果表明:共聚酯的熔点、结晶温度及拉伸性能受配比和酯交换时间的共同作用;而对流变性能的研究则显示熔融酯交换时间对共聚酯流变行为的影响较小。Segmented copolyesters involving poly (butylene terephthalate) (PBT) and ternary amorphous random copolyester-poly (ethylene terephthalate-co-isophthalate-co-sebacate) ( PETIS) by means of melting transesterification under vacuum condition were prepared. Investigations on melting and crystallization behaviors, tensile behaviors, and rheological properties were undertaken. It was showed that the melting points,crystallization and tensile property were influenced by the composition and transesterification time,melting transesterification time had less effect on the rheo logical behavior of copolyester.

关 键 词：多元共聚酯 熔融酯交换 拉伸性能 流变性能 制备 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]