中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (6): 65-68.

• 研究论文 • 上一篇    下一篇

聚碳酸酯改性聚酯型热塑性聚氨酯弹性体的合成与性能

管云林, 陈同蕙, 许美萱, 李海平, 刘振声   

  1. 天津大学应用化学系 天津 300072
  • 收稿日期:1994-02-28 修回日期:1994-06-18 出版日期:1994-12-10 发布日期:1994-12-10

Synthesis and Properties of Polycarbonate Modified Thermoplastic Polyester-Polyurethane Elastomers

Guan Yunlin, Chen Tonghui, Xu Meixuan, Li Haiping, Liu Zhensheng   

  1. Department of Applied Chemistry, Tianjin University, Tianjin 300072
  • Received:1994-02-28 Revised:1994-06-18 Published:1994-12-10 Online:1994-12-10

PDF

440

被引次数

14 | 1

摘要： 以聚碳酸1,6-已二醇酯(PC)、聚己二酸-1,4-丁二醇酯(PBAG)、4,4-二苯基甲烷二异氰酸酯(MDI)和1,4-丁二醇(BDO)为原料,合成线型聚碳酸酯改性聚酯型热塑性聚氨酯弹性体(TPCZE).对其玻璃化转变温度Tg、力学性能、耐水解性能和流变特性进行了研究。实验结果表明:随PC二醇含量的增加,弹性体的贮能模量下降,Tg则向高温方向(从-7.8℃到+2.6℃)移动。水解后的强度保持率从85.4%提高到99.7%和117%,熔体的表现粘度降低,加工性能得到改善。

关键词: 聚碳酸酯, 聚酯, 聚氨酯, 热塑性弹性体, 力学性能, 耐水解性

Abstract: The thermoplastic polyester-polyurethane elastomers were synthesized from polyhexamethylene carbonate, polytetramethylene adipate, diphenyl methane-4,4′disocyanate and 1,4-butylene-glycol. Their glass transition temperature, mechanical property, hydrolytic stability and rheological property have been studied. The results show that the Tg, and the apparent viscosity of tlie polymer melt decreased vVith the increase of the polycarbonate content.The processability and hydrolytic stability of the elastomer were improved.

Key words: polycarbonate, polyester, polyurethane, thermoplastic elastomer, mechanicalproperty, hydrolytic stability

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