应用化学 ›› 1988, Vol. 0 ›› Issue (6): 64-66.

• 研究简报 • 上一篇    下一篇

温度对丁腈羟聚氨酯固化反应及性能的影响

王连芝, 韩孝族, 左缓君, 赵国琴, 张庆余   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-07-21 修回日期:1988-07-11 出版日期:1988-12-10 发布日期:1988-12-10
  • 基金资助:
    国家自然科学基金

EFFECTS OF TEMPERATURE ON THE CURE REACTION AND THE PROPERTIES OF HTBN POLYURETHANE ELASTOMER

Wang Lianzhi, Han Xiaozu, Zuo Yuanjun, Zhao Guoqin, Zhang Qingyu   

  1. Changchun Institute of Applied Cheistry, Academia Sinica
  • Received:1987-07-21 Revised:1988-07-11 Published:1988-12-10 Online:1988-12-10

摘要: 端羟基液体丁二烯-丙烯腈共聚物(简称丁腈羟,以HTBN表示)通常用甲苯二异氰酸酯作固化剂,N,N′-二羟丙基苯胺为链延伸剂经二步法固化成丁腈羟聚氨酯弹性体[1]。本文报导丁腈羟-甲苯二异氰酸酯预聚体和N,N′-二羟丙基苯胺体系中同化温度对同化反应及固化弹性体性能的影响规律。

关键词: 丁腈羟, 聚氨酯, 固化反应, 力学性能

Abstract: The polyurethane elastomers from hydroxy-terminated copolymer of butadiene-acrylenitrile(HTBN) were prepared at different curing temperatures. Toluene diisocyanate was used as curing agent and N,N'-bis(2-hydroxypropyl)aniline as chain extender. The results showed that the curing rate depends on the curing temperature and the high the temperature, the fast the rate. The activation energy of reaction was determined as 39 kJ/mol. The crosslinking density of cured elastomer, therefore, the tensile strength and hardness of the elastomer increase with increase of the curing temperature, and its elongation decreases with increasing curing temperature.

Key words: HTBN, Polyurethane, Cure reaction, Mechanical property