表面改性纳米BaTiO_3杂化聚酰亚胺薄膜的合成及其热性能  

Synthesis and Thermal Performance of PI/BaTiO_3 Hybrid Films

作　　者：李亮荣[1] 丁永红[1] 欧阳红霞[1] 孙戊辰[1] 刘峰[2] 

机构地区：[1]南昌大学抚州医学分院,江西抚州344000 [2]南昌大学化学系,江西南昌330031

出　　处：《合成化学》2012年第3期302-305,共4页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(50803026);江西省科技支撑项目(2009BGA00300);南昌大学校科技基金资助项目(CDFY-KY1203)

摘　　要：以3,3',4,4'-联苯四酸二酐和4,4'-二氨基二苯醚为原料,通过原位聚合和流延成膜法制备了不同纳米BaTiO3含量的聚酰亚胺(PI)/BaTiO3杂化膜。采用不同的硅烷偶联剂对纳米BaTiO3进行表面改性,发现γ-巯丙基三乙氧基硅烷(KH590)的改性效果较好。大部分杂化膜在质量损失5%的温度都较纯膜有不同程度的升高,最多升高了18℃,说明PI/BaTiO3杂化膜较纯膜具有更好的耐热性能,且热分解温度均高于520℃。Polyimide（ PI）/BaTiO3 hybrid films were synthesized by in-situ polymerization of 4,4＇- oxydianiline with 3,4,3＇ ,4＇-biphenyhetracarboxylic dianhydride, and casting technology using nanosized BaTiO3 as an adulterant, which was surface modified by silane coupling agents. Results revealed that mecaptopropyhriethoxylsilane can get a better effect comparison with other silane coupling agents. Must of the films exihibited the higher temperatur in mass loss of 5% than the pure PI film. The thermal deeompostion temperature of the films were higher than 520 ℃.

关 键 词：聚酰亚胺 纳米BaTiO3粒子 表面改性 原位聚合 

分 类 号：O627.43[理学—有机化学]