| 填充型多相聚合物导电复合材料的PTC效应 |
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| 引用本文： | 熊辉,张清华,陈大俊.填充型多相聚合物导电复合材料的PTC效应[J].化学世界,2007,48(11):661-663,667. |
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| 作者姓名： | 熊辉 张清华 陈大俊 |
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| 作者单位： | 东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海,200051 |
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| 基金项目： | 国家863计划资助课题(2005AA302H30) |
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| 摘 要： | 以聚丙烯和低密度聚乙烯共混物为基体,用碳黑为填充材料制备了复合导电材料,导电性能的测试表明多相复合体系的渗滤阈值低于两相复合体系的渗滤阈值。对复合材料PTC效应的分析以及对材料的热性能测试结果表明碳黑在共混体系中的分布。同时探讨了体系碳黑含量的变化对PTC效应的影响。
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| 关 键 词： | 碳黑 聚丙烯 低密度聚乙烯 PTC效应 导电复合材料 |
| 文章编号： | 0367-6358（2007）11-661-03 |
| 修稿时间： | 2004-11-032005-06-22 |
Study on the Positive Temperature Coefficient of Conductive Multiphase Polymer Composites |
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| XIONG Hui,ZHANG Qing-hua,CHEN Da-jun.Study on the Positive Temperature Coefficient of Conductive Multiphase Polymer Composites[J].Chemical World,2007,48(11):661-663,667. |
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| Authors: | XIONG Hui ZHANG Qing-hua CHEN Da-jun |
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| Affiliation: | The State Key Laboratory of Modification for Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanhai 200051,China |
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| Abstract: | Conductive carbon black(CB) was filled into the polymer blends of polypropylene(PP) and low density polyethylene(LDPE) to prepare conducting multiphase composites.The measurement of conductive property indicated that the percolation threshold of CB/PP/LDPE is lower than that of CB/PP or CB/LDPE,and the percolation of CB/PP/LDPE was 7.2 wt% using the power-law equation.The conductivity mechanism of positive temperature coefficient(PTC) effect of CB/PP/LDPE composites,along with the preferential location of CB in LDPE,was discussed. |
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| Keywords: | carbon black polypropylene low density polyethylene PTC conductive composites |
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