| 聚酰亚胺/TiO2有机-无机纳米复合膜材料的合成与表征 |
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| 引用本文： | 杜宏伟,孔瑛,Ying ZHENG,史德青.聚酰亚胺/TiO2有机-无机纳米复合膜材料的合成与表征[J].高分子材料科学与工程,2004,20(1):83-86. |
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| 作者姓名： | 杜宏伟 孔瑛 Ying ZHENG 史德青 |
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| 作者单位： | 1. 石油大学,华东,化学化工学院,山东,东营,257061
2. Department of Chemical Engineering,University of New Brunswick, 15 Dineen Drive, P.O.4400, Fredericton, B.B., Canada E3B 5A3 |
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| 基金项目： | 科技部国家重点基础研究发展规划项目(G2000026407)、山东省自然科学基金(097B02122)、中国石油天然气集团公司石油科技中青年创新基金资助项目 |
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| 摘 要： | 以钛酸丁酯作前驱物，NMP为共溶剂，在可溶性聚酰亚胺PI(HQDPA．DMMDA)中通过溶胶．凝胶法制备出高TiO2含量的PI／TiO2有机-无机纳米复合膜材料。TiO2的实际含量高达35．5％时仍能成膜，低于27．2％时为透明浅黄色纳米复合膜。并通过XPS、WAXD、TG、DSC等手段对复合材料的结构和性能进行了表征。结果表明，在TiO2含量为27．2％时，PI／TiO2复合材料中TiO2的平均颗粒尺寸为35nm左右；热分解温度和玻璃化转变温度明显升高；复合材料力学性能良好。
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| 关 键 词： | 聚酰亚胺 二氧化钛 有机-无机纳米复合膜 结构 力学性能 |
| 文章编号： | 1000-7555(2004)01-0083-04 |
| 修稿时间： | 2002年1月18日 |
STUDY ON POLYIMIDE/TiO2 ORGANIC-INORGANIC NANOCOMPOSITE MATERIAL |
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| DU Hong-wei,KONG Ying,Ying Zheng,SHI De-qing.STUDY ON POLYIMIDE/TiO2 ORGANIC-INORGANIC NANOCOMPOSITE MATERIAL[J].Polymer Materials Science & Engineering,2004,20(1):83-86. |
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| Authors: | DU Hong-wei KONG Ying Ying Zheng SHI De-qing |
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| Affiliation: | DU Hong-wei~1,KONG Ying~1,Ying Zheng~2,SHI De-qing~1 |
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| Abstract: | Polyimide/TiO_2 organic-inorganic nanocomposite materials were synthesized by sol-gel process with soluble polyimide and TiO_2 sol in NMP solution. When the TiO_2 sol was prepared in the solvent of NMP, the TiO_2 content(by mass%) in polyimide reached (35.5%). The nano-composite films with TiO_2 contents below (27.2 %) were transparent and slight yellow. The nano-composites were characterized by XPS, WAXD, TG and DSC etc. The results indicate that inorganic TiO_2 in the composites existes mainly in an amorphous state in the matrix of polyimide. The size of the TiO_2 domains is about 10 nm~35 nm and increased with the TiO_2 contents. Compared with pure polyimide, the thermal and chemical stability of the obtained materials are greatly enhanced and the nano-composite also shows a good mechanical performance. |
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| Keywords: | polyimide TiO_2 sol nano-composite sol-gel process organic-inorganic |
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