文献类型：期刊文献

中文题名：导电聚苯胺纳米纤维对聚乙烯／炭黑复合体系电阻行为的影响

英文题名：Influence of Conducting Polyaniline Nanofibers on the Resistivity Behavior of Low-Density Polyethylene/Carbon Black Composites

作者：苏畅[1];王庚超[1];黄发荣[1];孙燕华[1]

机构：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

年份：2009

卷号：25

期号：2

起止页码：77

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20091311983054);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚苯胺纳米纤维;低密度聚乙烯;炭黑;PTC特性;电阻行为

外文关键词：polyaniline nanofibers; low-density polyethylene; carbon black; PTC effect; resistivity behavior

摘要：采用水溶液氧化聚合和热掺杂相结合的技术制备十二烷基苯磺酸掺杂的聚苯胺(PANI-DBSA)纳米纤维,并将PANI-DBSA纳米纤维与低密度聚乙烯(LDPE)和炭黑(CB)进行熔融共混制得PANI-DBSA/LDPE/CB导电复合材料,研究了PANI-DBSA纤维的引入对导电复合材料电阻行为的影响。结果表明,添加PANI-DBSA纳米纤维,复合材料的逾渗阀值移向较低炭黑含量,复合材料的PTC强度得到一定程度的提高,复合材料的电阻率-温度曲线的热循环稳定性得以改善。
Polyaniline （PANI） nanofibers doped by dodecylbenzenensulfonic acid （PANI-DBSA） were synthesized by the chemical oxidative polymerization and thermal doping technique. Conducting composites composed of PANI- DBSA nanofibers, low-density polyethylene （LDPE） and carbon black （CB） were prepared by melt processing. The effect of PANI-DBSA nanofibers on the resistivity behavior was investigated in detail. The results show that the LDPE/CB/PANI-DBSA conducting composites present a lower percolation threshold due to the easy formation of conducting paths for PANI-DBSA nanofibers in the LDPE. The positive temperature coefficient （PTC） intensity is enhanced and the reproducibility of electrical conductivity in heating/cooling cycles is improved after the introduction of PANI-DBSA nanofibers.