| 无色透明耐高温聚酰亚胺薄膜的制备与性能研究 |
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| 引用本文： | 刘金刚,张秀敏,孔祥飞,杨士勇. 无色透明耐高温聚酰亚胺薄膜的制备与性能研究[J]. 功能材料, 2006, 37(9): 1496-1499 |
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| 作者姓名： | 刘金刚 张秀敏 孔祥飞 杨士勇 |
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| 作者单位： | 中国科学院化学研究所,高技术材料实验室,北京,100080;北京交通大学,电气工程学院,北京,100044;北京交通大学,理学院,北京,100044 |
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| 摘 要： | 分别采用两种联苯型二酐单体,对称结构的3,3',4,4'-联苯四甲酸二酐(s-BPDA)以及不对称结构的2,3,3',4'-联苯四甲酸二酐(a-BPDA)与含氟芳香族二胺1,4-双(4'-氨基-2'-三氟甲基苯氧基)联苯(TFDAB)通过两步缩聚法制备了两种聚酰亚胺材料PI-1(s-BPDA/TFDAB)与PI-2(a-BPDA/TFDAB).研究结果表明,不对称结构可以显著增加PI薄膜在可见光区的透明性.25μm厚的PI-2薄膜在450nm处的透光率达到93%,而同样厚度的PI-1薄膜的透光率只有67%.此外,在PI分子结构中引入不对称结构不会牺牲材料的耐热稳定性、力学性能与介电性能.
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| 关 键 词： | 聚酰亚胺 透明性 不对称 联苯二酐 |
| 文章编号： | 1001-9731(2006)09-1496-04 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-03-24 |
Preparation and characterization of colorless high temperature resistant polyimide films |
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| LIU Jin-gang,ZHANG Xiu-min,KONG Xiang-fei,YANG Shi-yong. Preparation and characterization of colorless high temperature resistant polyimide films[J]. Journal of Functional Materials, 2006, 37(9): 1496-1499 |
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| Authors: | LIU Jin-gang ZHANG Xiu-min KONG Xiang-fei YANG Shi-yong |
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| Affiliation: | 1. Laboratory of Advanced Polymer Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; 2. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China; 3. School of Science, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Two dianhydrides,3,3',4,4'-biphenyltetracarboxylic dianhydride(s-BPDA) or 2,3,3',4'-biphenyltetracarboxylic dianhydride(aBPDA) were used to react with a fluoro-containing diamine,1,4-bis(4'-amino-2'-trifluoromethylphenoxy) biphenyl(TFDAB) via two-step polymerization procedure to yield two novel polyimides PI-1(s-BPDA/TFDAB) and PI-2(a-BPDA/TFDAB).It was shown that asymmetric structure endowed the polyimide film good transparency in the visible light region.For example,PI-2,derived from asymmetric dianhydride a-BPDA and TFDAB,exhibited more than 93% of transmittance at 450nm wavelength.Furthermore,asymmetric structure didn't deteriorate the thermal stability and mechanical properties of the polyimides. |
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| Keywords: | polyimide transparency asymmetry biphenyltetracarboxylic dianhydride |
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