环氧树脂弹性体的制备及性能研究

Research on Preparation and Characterizing of Epoxy Elastomer

通过分子结构设计,采用长柔性链段的端氨基聚醚与端氨基聚氨酯共同作为固化剂固化环氧树脂,得到了系列环氧树脂弹性体。并对协同固化体系的增韧效果进行了分析,研究了固化物力学性能及热性能的变化规律。研究表明,环氧树脂弹性体冲击韧性可达到52.1 KJ/m2,断裂伸长率可达到160%,并具有良好的综合性能。

This paper used amino-terminated polyether,and amino-terminated polyurethane mixture as curing agent to cure the epoxy resin.A series of epoxy elastmors was gotten.The curing products of epoxy elastomers were characterized by DSC and FT-IR respectively.The fracture surface morphologies of the cured products were observed by scanning and transmission electron microscopy analysis.The results showed that the impact toughness of the cured products reaches 52.1 kJ/m2 and the elongation of fraction reaches 160% a...