Microwave Absorption Properties of Cement Composites Containing Carbon fibers and Ferrites

摘要：

W-type BaCo2Fe16O27 hexaferrite which was prepared by sol-gel method and short carbon fibers were filled into cement composites in order to study the microwave absorption properties of the cement composites. Complex permittivity and permeability of the cement composites filled with ferrites and short carbon fibers were measured at Ku waveband (12.4～ 18.0 GHz), and their reflectivity was calculated according to the measured electromagnetic parameters. The results of prediction show that the carbon fibers play a key role in improving absorption properties of cement composites. The absorption properties of cement composites filled with 0.2％ of short carbon fibers and 35％ of ferrite by weight are excellent. The absorption bandwidth less than -10 dB of the cement composite of thickness d=1.5mm reached 4.4 GHz, and peak value is -27.0 dB at about 15.8 GHz.

关键词： Carbon fibers Ferrites Cement composites Microwave absorption properties

作者: Guozhu Shen Chao Yu Lijuan Wu

作者单位: College Math & Physics, Nanjing University of Information Science & Technology, Nanjing 210044,P.R.C School of Mechanical Engineering, Shanghai Dianji University, Shanghai 200240, P.R.China

会议类型: 国际会议

会议名称: 2010 International Conference on Application of Mathematics and Physics(2010国际数理科学与气象学术研讨会暨2010空间天气学研讨会 AMP2010)

会议地点: 南京

会议语种:英文

页码: 263-267

在线出版日期: 2010-05-08（万方平台首次上网日期，不代表论文的发表时间）