高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (2): 271.

• 论文 • 上一篇    下一篇

聚氨酯/聚甲基丙烯酸甲酯互穿聚合物网络的研究

李玉玮, 袁盛辉, 王静媛, 汤心颐   

  1. 吉林大学化学系, 130023
  • 收稿日期:1989-08-01 出版日期:1991-02-24 发布日期:1991-02-24
  • 通讯作者: 李玉玮
  • 基金资助:

    国家自然科学基金

Studies on Polyether-Polyurethane/Polymethyl Methacrylate Interpenetrating Polymer Networks

Li Yu-wei, Yuan Sheng-hui, Wang Jing-yuan, Tang Xin-yi   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1989-08-01 Online:1991-02-24 Published:1991-02-24

摘要: 本文对(蓖麻油-聚乙二醇)聚氨酯/聚甲基丙烯酸甲酯(PU/PMMA)互穿聚合物网络(IPN)体系进行了研究.实验结果表明:IPN的力学性能受网络化学构型控制.在PU/PMMA为25/75时,应力-应变曲线出现屈服点,产生类似皮革行为,并在此点抗张强度最高,表现明显的协同效应.动态力学性能及电镜均证明该体系相分离十分严重,通过加入扩链剂及网间交联剂能显著改善两组分相容性,其中网间交联剂效果最好。

关键词: 互穿聚合物网络, 聚氨酯, 聚甲基丙烯酸甲酯

Abstract: In this article we determined the stress-strain, morphology and mechanical properties of interpenetrating polymer networks of PE-PU/PMMA. The effect of the crosslinking, chain extending and intercrosslinking agent and the compositional ratio of PE-PU/PMMAon the mechanical properties were invesitgated. The results show that the sample with the composition ratio of PE-PU/PMMA=25/75 exhibits the highest mechanical properties which has a yield point and hehaves like leathery materials. The results of the dynamic mechnical properties and morphology show that a great phase separation occurs in this system. The compatibility of the two composition is remarkably improved by adding chain extending agent and intercrosslinking agent.

Key words: Interpenetrating polymer networks, Polyurethane, Polymethyl methacrylate

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