| N990炭黑/低密度聚乙烯复合材料的电性能 |
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| 引用本文： | 金新颖,王炳喜,陈栋阳. N990炭黑/低密度聚乙烯复合材料的电性能[J]. 功能高分子学报, 2007, 20(2): 133-136,142 |
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| 作者姓名： | 金新颖 王炳喜 陈栋阳 |
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| 作者单位： | 福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002 |
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| 基金项目： | 福建省青年科技人才创新项目资金资助(2002J020) |
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| 摘 要： | 采用熔融复合方法制备了N990炭黑/低密度聚乙烯(LDPE)复合材料,研究了其微观结构和电性能。结果表明:N990炭黑在复合材料中分布较均匀,对LDPE具有诱导结晶作用。复合材料的渗流阈值为20%,临界电阻率指数为9.2,PTC强度都大于4个数量级。复合材料在熔点之下,电阻率的对数值与相对体积存在线性关系。
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| 关 键 词： | PTC复合材料 N990 低密度聚乙烯 |
| 文章编号： | 1008-9357（2007）02-0133-04 |
| 收稿时间： | 2006-11-15 |
| 修稿时间： | 2006-11-15 |
Electrical Properties of N990 Carbon Black/LDPE Composite |
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| JIN Xin-ying,WANG Bing-xi,CHEN Dong-yang. Electrical Properties of N990 Carbon Black/LDPE Composite[J]. Journal of Functional Polymers, 2007, 20(2): 133-136,142 |
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| Authors: | JIN Xin-ying WANG Bing-xi CHEN Dong-yang |
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| Affiliation: | School of Materials Science and Engineering, Fuzhou University,Fuzhou 350002, China |
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| Abstract: | PTC composite was prepared by melt-mixing carbon black N990 with LDPE,and their microstructure and electrical properties were investigated.The results show that carbon particles are randomly dispersed in LDPE matrix,and can induce LDPE crystallization.The percolation threshold of composite is 20% by weight.Their critical resistivity-exponent is 9.2.PTC intensities of all prepared composite is larger than four orders of magnitude.The logarithm of resistivity is(linear) with relative volume under melting point of composite. |
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| Keywords: | PTC composite N990 LDPE |
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