高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (5): 807.

• 论文 • 上一篇    下一篇

软段结构对聚氨酯性能影响的研究

朱永群, 黄亦军, 胡巧玲, 傅晏彬, 俞晓薇   

  1. 杭州大学化学系, 杭州, 310028
  • 收稿日期:1995-03-25 出版日期:1997-05-24 发布日期:1997-05-24
  • 通讯作者: 朱永群, 男, 58岁, 教授.
  • 作者简介:朱永群, 男, 58岁, 教授.
  • 基金资助:

    浙江省科委应用基础研究资助

Studies on the Influence of Soft-segment Structure on the Properties of Polyurethane Adhesive

ZHU Yong-Qun, HUANG Yi-Jun, HU Qiao-Ling, FU Yan-Bin, YU Xiao-Wei   

  1. Department of Chemistry, Hangzhou University, Hangzhou, 310028
  • Received:1995-03-25 Online:1997-05-24 Published:1997-05-24

摘要: 用熔融缩聚法合成了已二酸系和已二酸/芳香二酸混合酸系两个系列的聚酯;用溶液一步法将部分聚酯与MDI反应,形成一系列聚酯型聚氨酯.以化学分析、VPO、IR、DSC、WAXD、力学拉伸等手段对聚酯和聚氨酯进行了表征;讨论了软段聚酯的结构对聚氨酯的结晶性、耐热性、粘结性等性能的影响.

关键词: 聚酯, 聚氨酯, 胶粘剂, 结构与性能

Abstract: Two series of polyesters were synthesized from adipic acid(AA), dimethyl terephthalate (DMT), isophthalic acid (IPA), phthalic anhydride (PA), with ethylene glycol (EG),butylenediol-1, 4 (1, 4-BDO), propanediol-1, 2 (1, 2-PDO), hexanediol-1, 6 (1, 6-HDO) and diethylene glycol(DEG) respectively by using melt-polycondensation method in the presence of H,PO4, SnCl2.2H2O, (这里有图片,19970536-807-1.gif), as catalyst respectively.The technological conditions of the polyesters synthesized were studied.This polyesters react separately with diphenylmethane diisocyanat (MDI) by solution polymerization to afford two series of linear block polyurethane adhesives.The crystallinity and the melting point of the polyesters and polyurethanes were determined by means of X-ray diffraction (WAXD), differential scanning calorimetry (DSC)-The relationship between structure and properties of the Polyesters, expecially the influence of the polyesters type on adhesion behavior of the corresponding tl1e polyurethanes were discussed.

Key words: Polyester, Polyurethane, Adhesive, Crystallinity, Relationship between structure and properties

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