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以聚丙二醇二缩水甘油醚(PPGDGE)为增韧剂改性环氧树脂E-51/甲基四氢邻苯二甲酸酐固化体系,通过力学性能、耐热性和形状记忆性能测试等研究了PPGDGE用量对该环氧体系性能的影响。结果表明:PPG-DGE添加质量分数为10%时,体系最大形变量增加约43%,形状回复速率增长75%;添加15%PPGDGE时,体系固定率提高了2.2%,回复率提高了4.5%,同时冲击强度提高了65%。PPGDGE的加入使得环氧树脂形状记忆性能有了大幅度提高。
Epoxy resin E-51 / methyltetrahydrophthalic anhydride curing system was modified by polypropylene glycol diglycidyl ether (PPGDGE) as toughening agent, and its mechanical properties, heat resistance and shape memory property were tested Effect of PPGDGE dosage on the performance of the epoxy system. The results showed that when PPG-DGE was added at 10%, the maximum deformation was increased by about 43% and the shape recovery rate was increased by 75%. When 15% PPGDGE was added, the system fixation rate increased by 2.2% and the recovery rate increased by 4.5% , While the impact strength increased by 65%. The addition of PPGDGE makes the shape memory properties of epoxy resin have been greatly improved.