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| 聚氯乙烯/炭黑导电复合体系的压阻行为 | |
| 引用本文： | 徐文武,宋义虎,周剑锋,郑强,章明秋. 聚氯乙烯/炭黑导电复合体系的压阻行为[J]. 高等学校化学学报, 2005, 26(6): 1170-1173 |
| 作者姓名： | 徐文武 宋义虎 周剑锋 郑强 章明秋 |
| 作者单位： | 1. 浙江大学高分子科学与工程学系, 杭州310027;2. 中山大学材料科学研究所, 广州510275 |
| 基金项目： | 国家自然科学基金;国家自然科学基金 |
| 摘 要： | 研究了聚氯乙烯/炭黑(PVC/CB)导电复合体系在单轴压力作用下的压阻行为,发现CB含量对电阻-机械响应具有显著的影响.当CB含量低于渗流阈值时,PVC/CB复合材料呈现PPC效应;而高于渗流阈值时,呈现NPC效应.在渗流阈值附近,单轴压缩可诱导NPC效应的出现,或者抑制PPC效应. |
| 关 键 词： | 聚氯乙烯 炭黑 压阻行为 单轴压缩-解压缩 唯象模型 |
| 文章编号： | 0251-0790(2005)06-1170-04 |
| 收稿时间： | 2004-06-21 |
Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites |
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| XU Wen-wu,SONG Yi-hu,ZHOU Jian-Feng,ZHENG Qiang,ZHANG Ming-qiu. Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites[J]. Chemical Research In Chinese Universities, 2005, 26(6): 1170-1173 | |
| Authors: | XU Wen-wu SONG Yi-hu ZHOU Jian-Feng ZHENG Qiang ZHANG Ming-qiu |
| Affiliation: | 1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;2. Materials Science Institude, Zhongshan University, Guangzhou 510275, China |
| Abstract: | The piezoresistive behavior of polyvinyl chloride/carbon black(PVC/CB) conductive composites subjected to uniaxial compression-decompression cycles was studied. The composites exhibited a significant piezoresistance, when CB mass fraction w was located in the vicinity of the percolation threshold w__c. The composites displayed a positive pressure coefficient(PPC) effect at w |
| Keywords: | Poly(vinyl chloride) Carbon black Piezoresistance behavior Uniaxial compression-decompression Phenomenological model |
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