利用4-辛氧基联苯酚-3,5-二氨基苯甲酸酯(C8)、3,3′-二甲基-4,4′-亚甲基二苯胺(DMMDA)以不同比例与4,4-氧双邻苯二甲酸酐(ODPA)一步法聚合制得第一体系不同二胺含量的聚酰亚胺(PI).研究了二胺含量对PI的溶解性、取向性、预倾角和热稳定性的影响.用C8、DMMDA以相同比例与ODPA、均苯四甲酸酐(PMDA)、3,3′,4,4′-二苯甲酮四羧酸二酐(BTDA)一步法反应,制得第二体系不同二酐结构的PI,研究了二酐结构对PI溶解性和热稳定性的影响.
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