【摘要】 用碳纳米管(CNT)填充硅橡胶制备了碳纳米管/硅橡胶复合材料,并研究了复合材料的电学特性。结果表明:随着碳纳米管含量的增加,复合材料的电阻率急剧下降,当wCNT=0.075时,电阻率下降了约10个数量级。随着拉力增大,复合材料的力敏效应增大。复合材料存在明显的弛豫现象:拉力越大,电阻率的弛豫时间越长;碳纳米管含量越大,复合材料的弛豫现象越不明显,可以用R(t)=(R0-R∞)exp(t/τ)+R∞来描述复合材料的弛豫过程。更多还原

【Abstract】 Carbon nanotubes（CNT）/silicone rubber composite was prepared by modifying carbon nanotubes,and it’s electrical properties were investigated.The results show that resistivity of the composite decreases quickly with the increasing of CNT content.When w_CNT=0.075,the composite resistivity drops in 10 order.（Also）,the composite resistivity changes greatly on load.Moreover,the relaxation process exists obviously in the CNT/silicone rubber composite.And the larger the load is,the longer the relaxation time of composite resistivity is.At the same time,the relaxation process becomes less with the increasing of w_CNT.The（relaxation） process can be described with R（t）=（R₀-R_∞）exp（t/τ）+R_∞.更多还原