基于3,5-二胺基-N（N′,N′-正二丁基甲酰胺基苯基）-苯甲酰胺的聚酰亚胺的溶解性、热稳定性和取向性能

Solubility, Thermal Stability and Pretilt Angle of 3, 5-Diamino-N-Benzamide Based Polyimide

摘要: 用制得的大体积双侧基3,5-二胺基-N（N′,N′-正二丁基甲酰胺基苯基）-苯甲酰胺（DAPDM）,与3,3′-二甲基-4,4′-二氨基二苯甲烷(DMMDA)、3,3′,4,4′-二苯醚四甲酸二酐(ODPA)采用一步法共缩聚制得聚酰亚胺共聚物。采用核磁共振对该共聚物进行了表征，对其溶解性、热稳定性、预倾角进行了分析。结果表明：制备的聚酰亚胺可溶于氮甲基吡咯烷酮（NMP）、二甲基甲酰胺（DMF）等溶剂，溶解性良好，并且聚酰亚胺膜具有2.8°的预倾角。

Abstract: Polyimide was copolymerized via one step method using selfmade 3,5-diamino-N-benzamide (DAPDM),3,3′-dimethyl-4,4′-methylenedianiline (DMMDA) with 4,4′-oxydi (phthalic anhydride) (ODPA). The obtained polyimide was characterized by 1H-NMR solubility, thermostability, and pretilt angle of polyimide were analysed. Results show that the polyimide has excellent solubility in N-methyl-2-pyrrolidone (NMP), N, N-dimethylformamide (DMF) and some other solvents. Meanwhile, the polyimide shows a pretilt angle of 2.8°.