可溶性透明聚酰亚胺薄膜的合成及性能研究  

Synthesis and Properties of Soluble and Transparent Polyimide Films

作　　者：张玲[1,2,3,4] 徐瑛[1,2,3,4] 陈妤红[1] 尤庆亮[1,2,3] 于洁[1,2,4] 郭文勇[1,4] 

机构地区：[1]江汉大学柔性显示材料与技术湖北省协同创新中心,武汉430074 [2]江汉大学光电化学材料与器件教育部重点实验室,武汉430074 [3]江汉大学化学与环境工程学院,武汉430056 [4]华烁科技股份有限公司,武汉430074

出　　处：《绝缘材料》2016年第4期14-18,共5页Insulating Materials

基　　金：国家高技术研究发展计划(863计划)项目(2015AA033406)

摘　　要：以2,2’-双(三氟甲基)-4,4’-二氨基联苯(TFMB)和1,1’-双(4-氨基苯基)环己烷(BAPC)为二胺原料,将其与2种商品化的芳香二酐3,3’,4,4’-二苯醚四酸二酐(ODPA)、3,3’,4,4’-二苯酮四酸二酐(BTDA)进行两步缩聚反应,合成4种聚酰亚胺。通过对这4种聚酰亚胺的溶解性、固化温度及其薄膜透明性进行比较分析,筛选出其中两种溶解性和薄膜透明性较好的聚酰亚胺,并对这两种聚酰亚胺薄膜的热稳定性和力学性能等进行了分析测试。结果表明:将脂环结构引入到含三氟甲基和柔性基团(醚键、羰基)的聚酰亚胺中,使聚酰亚胺的溶解性得到明显改善,在可溶于DMAc、NMP、DMF和CHCl_3的基础上,还可溶于DMSO和THF;薄膜透明性也得到进一步改善,同时具有较好的热稳定性和力学性能。Four kinds of polyimides were prepared using two diamines（2,2＇-bis（trifluoromethyl）benzidine（TFMB） and 1,1＇-bis（4-aminophenyl）cyclohexane（BAPC）） to react with two commercialized aromatic dianhydrides（4,4＇-oxydiphthalic anhydride（ODPA） and 3,3＇,4,4＇-benzophenone tetracarboxylic dianhydride（BTDA）） by two-step polycondensation,and their solubility,curing temperature,and transparency were analyzed. Two polyimides with good solubility and transparency were selected out,and the thermal stability and mechanical properties of the two polyimide films were analyzed. The results show that the solubility of the polyimides is improved obviously through introducing alicyclic structure to the polyimides molecule with trifluoromethyl and flexible group（ether linkage or carbonyl）,and the polyimides can not only solve in DMAc,NMP,DMF,and CHCl3,but also solve in DMSO and THF. The transparency of the polyimide films is also improved,meanwhile,the polyimide films have excellent thermal stability and mechanical properties.

关 键 词：聚酰亚胺 可溶性 透明性 柔性 

分 类 号：TM215.3[一般工业技术—材料科学与工程]