共缩聚型聚酰亚胺薄膜的制备及其性能的研究  

Study on preparation and property of copolycondensation polyimide Film

作　　者：周海军[1] 张晓蕾[1] 陈孝起[1] 杨淑兰[1] 刘德居[2] 李彦涛[1] 

机构地区：[1]河北省科学院能源研究所,石家庄050081 [2]河北科技大学,石家庄050054

出　　处：《化工新型材料》2017年第4期68-69,72,共3页New Chemical Materials

摘　　要：采用不同摩尔比的均苯四甲酸二酐(PMDA)、2,2′,3,3′-联苯四甲酸二酐(i-BPDA)的混合二酐与二氨基二苯醚(ODA)进行共聚反应,得到聚酰胺酸,经过程序控制热亚胺化制备聚酰亚胺薄膜。通过对力学性能、热学性能和电性能进行测试,结果表明随着i-BPDA比例的增加扯断伸长率显著增加,当PMDA与i-BPDA的摩尔比为90∶10时,PI膜的综合性能优异。Polyimide（PI）films derived from different molar ratio of pyromellitic dianhydride（PMDA）and 2,2′,3,3′-biphenyltetracarboxylic dianhydride（i-BPDA）reacting with diamino diphenyl ether（ODA）were obtained by copolycondensation reaction under the program control of imidization procedures.The mechanical,thermal and electrical properties were measured.The results showed that the elongation at break of PI films increased with increasing the ratio of i-BPDA significantly.When the PMDA and i-BPDA mole ratio was 90∶10,the comprehensive performance of PI film was excellent.

关 键 词：聚酰亚胺薄膜 i-BPDA 亚胺化 耐热性能 

分 类 号：O633.22[理学—高分子化学]