| 联苯型聚酰亚胺复合管膜的制备及其电性能研究 |
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| 引用本文： | 王钶,齐娜,肖继君,李彦涛.联苯型聚酰亚胺复合管膜的制备及其电性能研究[J].绝缘材料,2009,42(2). |
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| 作者姓名： | 王钶 齐娜 肖继君 李彦涛 |
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| 作者单位： | 1. 河北科技大学,材料科学与工程学院,石家庄,050018
2. 河北省能源研究所,石家庄,050081 |
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| 摘 要： | 通过原位缩聚,采用3,3',4,4'-联苯四羧酸二酐(BPDA)和4,4'-二氨基二苯醚(ODA)为主要原料制备了聚酰亚胺(PI)复合管膜.首先合成聚酰胺酸(PAA),并旋涂制备了聚酰胺酸管膜,然后将溶有碳粉的氟树脂与纯聚酰胺酸管膜复合并热亚胺化,最后再涂覆保护层,制得PI复合管膜.采用傅里叶红外光谱仪(FT-IR)、差式扫描量热法(DSC)、热重分析(TGA)、精密阻抗分析仪和高阻计分别对聚酰亚胺复合管膜的结构、玻璃化转变温度(Tg)、分解温度(Td)、介电性和电阻率进行了表征.研究结果表明,聚酰亚胺管膜的Tg为312.5℃,失重5%的分解温度为560℃.PI复合管膜的介电常数较纯PI管膜稍有增加,碳粉层的加入有效改善了纯PI管膜的介电常数随频率的突变行为,而介质损耗方面.PI复合管膜比纯PI管膜稍有降低.PI复合管膜的表面电阻率比纯PI管膜降低了92.85%,体积电阻率比纯PI管膜降低了77.30%.
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| 关 键 词： | 聚酰亚胺 碳粉 复合管膜 介电性能 |
Preparation and Electrical Properties Investigation of Biphenyl-PI Composite Tubular Film |
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| WANG Ke,QI Na,XIAO Jijun,LI Yan-tao.Preparation and Electrical Properties Investigation of Biphenyl-PI Composite Tubular Film[J].Insulating Materials,2009,42(2). |
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| Authors: | WANG Ke QI Na XIAO Jijun LI Yan-tao |
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| Affiliation: | 1.College of Material Science and Technology;Hebei University of Science and Technology;Shijiazhuang 050018;China;2.Hebei Institute of Energy Source;Shijiazhuang 050081;China |
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| Abstract: | A kind of biphenyl polyimide composite tubular film was prepared.First,polyamic acid(PAA) was synthesized by in-situ polycondensation using 3,3',4,4'-biphenyltetracarboxylic dianhydride acid(BPDA) and 4,4'-oxydianiline(ODA) as main materials,and composite PAA tubular film was prepared by spin coating,and then fluroresin with carbon powder was overlaid on PAA film and imidized.Lastly,fluroresin was coated as a surface layer.The chemical structure,glass transition temperature(Tg),decomposition temperature(Td)... |
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| Keywords: | polyimide carbon powder composite tubular film dielectric properties |
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