%0 Journal Article
%T Microwave Absorbing Properties of Short Hollow Carbon Fiber Composites<br>短切中空多孔碳纤维复合材料的吸波性能
%A XIE Wei
%A CHENG Hai-Feng
%A CHU Zeng-Yong
%A CHEN Zhao-Hui
%A <br>谢 炜
%A 程海峰
%A 楚增勇
%A 陈朝辉
%J 无机材料学报
%D 2008
%I Science Press
%X In order to get lightweight radar wave absorbers, hollow carbon fibers were prepared from polyacrylonitrile (PAN) hollow fibers by thermo-oxidative stabilization in air and carbonization in nitrogen. The microstructure and microwave absorbing properties of the resultant PAN-based hollow carbon fibers (PAN-HCFs) were studied by SEM, XRD and voter network analyzer. The reflectivity was simulated by using RAMCAD software. Results show that the electromagnetic parameters of the absorbing materials increase with increase of the PAN-HCFs volume fraction. The reflection coefficient apex moves to lower frequencies with the thickness of absorbing material increasing. With increase of volume fraction of the PAN-HCFs, the reflection coefficients increase greatly and the optimal thickness decreases at the same time. It is found that the 2mm thick composites containing 33.30% PAN-HCFs has an absorbing bandwidth of 5.17GHz below -5dB and 2.88GHz below -10dB in the frequency range of 2-18GHz.The lowest reflection is -21.36dB at 10GHz. The PAN-HCFs are proved to be a light conductive radar absorbing materials in view of its hollow structures and microwave absorption properties.
%K hollow carbon fibers
%K electromagnetic parameters
%K reflectivity
%K microwave absorbing property<br>中空多孔碳纤维
%K 电磁参数
%K 反射率
%K 吸波性能
%K 多孔碳
%K 碳纤维复合材料
%K 吸波性能
%K Carbon
%K Fiber
%K Composites
%K Hollow
%K Short
%K Properties
%K Absorbing
%K 带宽
%K 低反射率
%K 纤维体积分数
%K 频率范围
%K 厚度
%K 结果计算
%K 电磁参数
%K 介电常数
%K 复合吸波材料
%K 石蜡
%K 随机分布
%K 雷达波吸收剂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=77B053A425C0E79CA49E3BE35A1C6C42&yid=67289AFF6305E306&vid=EA389574707BDED3&iid=38B194292C032A66&sid=283B38DAD0D068F3&eid=5CB576B96D187F64&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=1&reference_num=25