使用2,3,3',4'-联苯四酸二酐、对苯二胺和反应性封端剂4-苯乙炔苯酐,采用单体原位反应聚合法制备了设计分子量为1500的PMR型聚酰亚胺树脂PEPA-15.PEPA-15树脂溶液具有良好的室温储存稳定性,我们使用AR-2000流变仪对树脂的熔体加工性能进行了初步测试,树脂经过371℃固化后显示了优异的热稳定性,T300碳纤维增强的复合材料经371℃后固化后在动态热机械分析测试(DMA)中在450℃前储能模量没有明显变化.
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