Electrical Properties of Silicone Rubber Modified by Carbon Nanotubes

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)=(R_0-R_∞)exp(t/τ)+R_∞.