| UHMWPE/CNTs导电复合体系的电性能 |
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| 引用本文： | 鄢定祥,高杰峰,彭舜,谭奎,付建伟,黄伟,袁博,李忠明.UHMWPE/CNTs导电复合体系的电性能[J].高分子材料科学与工程,2009(7). |
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| 作者姓名： | 鄢定祥 高杰峰 彭舜 谭奎 付建伟 黄伟 袁博 李忠明 |
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| 作者单位： | 四川大学高分子科学与工程学院;高分子材料工程国家重点实验室; |
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| 基金项目： | 国家大学生创新实验计划项目; 霍英东青年教师基金资助项目(101045) |
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| 摘 要： | 制备了低逾渗值的超高分子量聚乙烯(UHMWPE)/多壁碳纳米管(CNTs)导电复合材料,CNTs分布于UHMWPE粒子的表面和界面处。研究了UHMWPE/CNTs复合材料的温度电阻行为,发现在基体熔点附近,电阻急剧增加,并达到一最大值,然后电阻开始下降,体现负温度电阻效应(NTC)。分析了复合材料电阻松弛时间的升温速率的依赖性,结果表明,升温速率越快,电阻的松弛时间越短。
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| 关 键 词： | 碳纳米管 超高分子量聚乙烯 正温度系数 负温度系数 松弛 导电复合材料 |
Ultra-High Molecular Weight Polyethylene/Carbon Nanotubes Conductive Polymer Composite |
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| YAN Ding-xiang,GAO Jie-feng,PENG Shun,TAN Kui,FU Jian-wei,HUANG Wei,YUAN Bo,LI Zhong-ming,Chengdu ,China.Ultra-High Molecular Weight Polyethylene/Carbon Nanotubes Conductive Polymer Composite[J].Polymer Materials Science & Engineering,2009(7). |
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| Authors: | YAN Ding-xiang GAO Jie-feng PENG Shun TAN Kui FU Jian-wei HUANG Wei YUAN Bo LI Zhong-ming Chengdu China |
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| Affiliation: | YAN Ding-xiang,GAO Jie-feng,PENG Shun,TAN Kui,FU Jian-wei,HUANG Wei,YUAN Bo,LI Zhong-ming(College of Polymer Science and Engineering of Sichuan University,State Key Laboratory of Polymer Materials Engineering(Sichuan University),Chengdu 610065,China) |
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| Abstract: | A low percolation threshold can be achieved for ultra-high molecular weight polyethylene/carbon nanotubes(UHMWPE/CNTs) conductive composite with a segregated structure in which CNTs are only located on the surface and interface of the polymer matrix particles.Temperature-resistivity behaviour of the conductive composite is investigated.Resistance of the conductive composite rises sharply to the maximal value around the melting point followed by a negative temperature coefficient(NTC).Heating rate-dependent ... |
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| Keywords: | CNTs UHMWPE positive temperature coefficient negative temperature coefficient relaxation electrically conductive composite |
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