Prediction of electrical properties of carbon nanotube/polymer composites
In this research,we propose a 3 dimensional(3D)numerical model to predict the electrical properties of insulating polymer filled by carbon nanotubes(CNTs).In this model,with the assumption of randomly distributed CNTs in polymers,the percolation threshold is predicted at the volume fraction of CNTs when a complete conductive pathway connected by some CNTs is built up.Furthermore,a 3D resistor network model for electrical conduction problems of composites is proposed,in which Kirchhoff’s current law is used to build up the system equations at different nodes in the network connected by CNTs,and then Ohm’s law is used to predict the macroscopic electrical conductivity of composites.The influence of curved shape of CNTs on the electrical properties is investigated in detail.Moreover,the experiments are performed.The present experimental results plus some previous experimental results by other researchers are employed to verify the numerical results.Finally,the application of this nano-composite for high sensitive strain sensors is experimentally and theoretically investigated.
Carbon nanotube polymer nano-composite electrical property strain sensor
N. Hu Z. Masuda H. Fukunaga
Department of Aerospace Engineering,Tohoku University,Japan
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）