Study on electromagnetic properties and microwave absorbing characteristics of carbon nanofibers
In this study,carbon nanofibers (CNFs) with the typical diameter ranging from 100~300nm were prepared via polymer blended wet-spinning method and subsequent thermal treatment.The complex permittivity (ε-jε),complex permeability (μ-jμ) and microwave absorption properties of carbon nanofibers/epoxy composites have been studied in Xband frequency range (8.2-12.4 GHz) using a HP8722ES network system.ε,ε,μ and μ are found to increase with increased CNF contents.Measured values of these parameters were used to determine the reflection loss at various sample thicknesses,based on a model of a single-layered plane wave absorber backed by a perfect conductor.The composite with 8wt％ CNFs has shown a maximum reflection loss of -34dB at 10.5GHz with the -10dB bandwidth over the extended frequency range of 8.8-12.4GHz which covers almost the whole X-band at a thickness of 2.1mm.
Xiao Lv Shenglin Yang Junhong Jin Liang Zhang Guang Li Jianming Jiang
College of Material Science and Engineering,Donghua University Shanghai 201620,P.R.China
国际会议
昆明
英文
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）