PET/PHB热致液晶共聚酯的合成  

The Synthesis of PET/PHB Thermotropic Liquid Crystal Copolyester

作　　者：关桂荷[1] 方海权 章悦庭[1] 孙桐[1] 

机构地区：[1]中国纺织大学化纤系,上海市200051

出　　处：《塑料工业》1990年第5期14-17,23,共5页China Plastics Industry

基　　金：国家自然科学基金

摘　　要：本文研究了反应温度、反应时间、催化剂体系和催化剂浓度对PET/PHB(40/60)热致液晶共聚酯共缩聚反应的影响。结果表明,当反应温度为290℃、真空度≤67Pa、使用组合催化剂Sb_2O_3/Zn(CH_3COO)_2·2H_2O、[Cat]/[PHB]=15×10^(-4)摩尔/摩尔、反应时间5小时左右,能获得特性粘度达0.8～0.9、断裂强度和弹性模量都较高的共聚酯。In this paper, the effects of reaction temperature and time, catalyst system and its concentration on the copolyconden-sation of PET/PHB (40/60) thermotropic liquid crystal copolyester were studied. The results showed that at temperature of290℃ for 5 hours, vacuum of≤67 Pa, with a combined catalyst system Sb_2O_3/Zn (CH_3COO)_2. 2H_2O and concentration[Cat]/[PHB]=15×10^(-4) mole/mole, the copolyester with [η] = 0.8-0.9 and high break strength and elastic modulus could be prepared.

关 键 词：共聚酯 PET PHB 热致液晶 共缩聚 

分 类 号：O633.14[理学—高分子化学]