PBT／PET共聚酯及其纤维的热性能  

Thermal Properties of PBT/PET Copolyester and its Fiber

作　　者：华坚[1] 罗鸿烈 刘碧卓 李再兰 

机构地区：[1]成都科技大学纺织化工系,成都科技大学测试中心

出　　处：《成都科技大学学报》1994年第4期25-30,共6页

摘　　要：本文利用差示扫描量热分析（ＤＳＣ）研究了ＰＢＴ／ＰＥＴ共聚酯及其纤维热性能与形态结构的关系．实验结果表明ＰＢＴ／ＰＥＴ共聚酯高温稳定性好，其结晶结构为ＰＢＴ／ＰＥＴ共晶结构，随ＰＢＴ含量增加，其熔融热增加，熔点下降，ＰＢＴ／ＰＥＴ共聚纤维的熔融热随拉伸倍数增加而增加，这表明纤维结晶度随拉伸倍数而增加．适宜于ＰＢＴ／ＰＥＴ共聚纤维的拉伸温度为８０℃．The relationship between the sturcture of PBT/PET copolyester and its fiber and their thermal propercies has been studied by DSC in this paper. The results show that thermal propetties of PBT/PET copolyester which has high stability in high temperature correspound to the exitent of the cocrystalline structure of PBT/PET copolyester as the increasing of PBT content in the copolyester the enthalpy of it increaes and melting point decrease. Otherwist, the melting point of PBT/PET copolyester fiber increase as its draw ratio incresasing which shows that the degree of orientation and crystallation of the fiber increaseas as draw ratio increasing. It is suitable to the drawing temperation of the copolyester fiber in 80℃.

关 键 词：聚酯纤维 热性能 PBT PET 共聚酯 

分 类 号：TQ342.2[化学工程—化纤工业]