期刊论文

Li, H.(lihengfeng@gmail.com)

中文

高分子材料科学与工程

1000-7555

2012

28

11

153-157

10.16865/j.cnki.1000-7555.2012.11.038

湖南省自然科学基金资助项目（10JJ5057）；

本校为其他机构

以4，4’-二氨基二苯醚（ODA）和3，3，4，4’-二苯甲酮四酸二酐（BTDA）为单体，以正硅酸乙酯和钛酸丁酯为SiO2和TiO2的前驱体，采用溶胶-凝胶原位生成法制备了聚酰亚胺（PI）复合薄膜。采用红外光谱（FT—IR）、扫描电镜（SEM）、x射线衍射（XRD）和紫外分光光度计（UV—Vis）对复合材料进行结构表征和性能测试。结果表明，复合膜的热亚胺化反应完全；纳米SiO2、TiO2均匀分散于PI基体中；复合膜透明性好，对紫外光吸收较好。热重分析（TG）和介电性能测试表明，得到了一种热稳定性好、介电性能优良的复合材料，能够满足其在微电子器件领域的使用要求。

Polyimide/SiO2-TiO2 composite films with different molar ratio of inorganic nanoparticle were prepared using tetraethoxysilane and tetrabutyl titanate as the precursor by the sol-gel method. Chemical structure, morphology and other properties of composite films were studied by means of SEM, IR, XRD, UV-vis and TGA, the dielectric constant was also tested.The results indicate that preparation of polyimide/SiO2-TiO2 is succeeded, inorganic nanoparticles distribute uniformly in the polyimide matrix and the nanoparticles size is uniformly about 75 nm. The composite films are transparent and the ul...