【作者】 杨继敏； 张志凌； 谢续明； 孙培梅； 王志峰； 叶雄英；

【Author】 Yang Jimin1,2,Zhang Zhiling1,Xie Xuming1,Sun Peimei2,Wang Zhifeng3,Ye Xiongying3 ( 1. Advanced Materials Laboratory, Department of Chemical Engineering, Tsinghua University, Beijing 100084; 2. School of Chemical and Environmental Engineering,China University of Mining & Technology, Beijing 100083; 3. Department of Precision Instruments & Mechatology,Tsinghua University,Beijing 100084)

【机构】 清华大学化工系先进材料教育部重点实验室； 中国矿业大学化学与环境工程学院； 清华大学精仪系；

【摘要】 以苯乙烯-丁二烯-苯乙烯(SBS)三嵌段共聚物热塑性弹性体为柔性基体材料,多壁碳纳米管(MWNTs)为导电填料,通过溶液共混、铸膜的方法制备了一系列碳管含量不同的复合材料薄膜,并对复合材料薄膜的导电性能进行了测试,其渗流区间为0.75%～2.0%(wt%),渗流阈值约为1.0%(wt%)。考察了不同压力下复合材料薄膜导电性能的变化情况。更多还原

【Abstract】 Flexible films of conductive nanocomposites based on styrene-butadiene-styrene tri-block copolymer ( SBS) and multi-walled carbon nanotubes( MWNTs) were prepared by using a solvent-casting method,in which MWNTs acted as conductive fillers while SBS acted as the matrix. The electrical properties together with the resistance-pressure sensitivity of the films with different MWNTs contents were investigated. The Seepage zone of the conductive nanocomposites was found to be between 0. 75% ～ 2. 0% ( wt% ) ,while the percolation threshold was about 1. 0% . The changes in resistance for the films under different pressures were also discussed.更多还原