应用化学 ›› 1988, Vol. 0 ›› Issue (2): 67-70.

• 研究论文 • 上一篇    下一篇

从端羟基液体聚丁二烯制备的弹性体 Ⅱ.端羟基液体聚丁二烯的分子量分布对弹性体力学性能的影响

刘文忠, 张喜田, 张庆余   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-03-31 修回日期:1987-07-03 出版日期:1988-04-10 发布日期:1988-04-10

ELASTOMER BASED ON LIQUID HYDROXYL-TERMINATED POLYBUTADIENE Ⅱ.INFLUENCE OF MOLECULAR WEIGHT DISTRIBUTION OF LIQUID HYDROXYL-TERMINATED POLYBUTADIENE ON THE MECHANICAL PROPERTIES OF ELASTOMER

Liu Wenzhong, Zhang Xitian, Zhang Qingyu   

  1. Changchun Institute of Applied Chemistry, Acacemia Sinica
  • Received:1987-03-31 Revised:1987-07-03 Published:1988-04-10 Online:1988-04-10

摘要: 本文研究了端羟基液体聚丁二烯(HTPB)的分子量分布对由HTPB,N、N-二(2-羟丙基)苯胺和甲苯二异氰酸酯制备的弹性体的力学性能的影响.研究结果表明,HTPB的多分散指数从1.6增加到2.1,弹性体的抗张强度,100%模量和硬度未见不良影响,而且略有提高.弹性体的永久形变增加较明显.

关键词: 聚氨酯, 弹性体, 丁二烯齐聚物, 分子量分布, 力学性能

Abstract: The influence of molecular weight distribution of hydroxyl-terminated liquid polybutadiene(HTPB) on the mechanical properties of the elastomer obtained from HTPB, N, N-bis(2-hydroxypropyl) aniline and toluene diisocyanate has been investigated. The results showed that molecular weight distribution of HTPB had no marked effect on the tensile strength, 100% modulus and hardness of the elastomter. However, the permanent set of the elastomer increased obviously, when the polydispersity index of HTPB changed from 1.6 to 2.1.

Key words: Polyurethane, Elastomer, Butadiene oligomer, Molecular weight, distribution, Mechanical property