截面弯曲对C形SiC纤维电磁性能的影响  

The influence of sectional curve on electromagnetic properties of C-shaped SiC fibers

作　　者：刘旭光[1] 王应德[1] 王磊[1] 薛金根[1] 蓝新艳[1] 

机构地区：[1]国防科技大学新型陶瓷纤维及其复合材料国防科技重点实验室,湖南长沙410073

出　　处：《功能材料》2010年第12期2102-2104,共3页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA305101)

摘　　要：制备出具有不同截面弯曲程度的C形碳化硅纤维,研究了其电磁参数和吸波性能。制备的C形纤维是介电损耗材料,随着纤维截面弧度增加,纤维的介电常数和损耗角正切值减小,其中弧度为240°的纤维表现出较大的介电常数实部。随着纤维截面弧度增加,材料吸收峰向高频移动,并且在高频的吸收峰高及吸波频宽皆相应增加。C-shaped SiC fibers with different sectional curve were prepared,and electromagnetic parameters as well as microwave absorbing properties of those fibers were studied.C-shaped SiC fiber is electric loss material.When the sectional radian of C-shaped fibers increases,electric permittivity and loss decrease,while the fibers with radian of 240° have biggest real part of permittivity.Microwave absorbing peak moves to high frequency along with increase of sectional radian,while the peak value and absorbing width at high frequency increase.

关 键 词：C形 碳化硅纤维 截面弯曲 电磁性能 

分 类 号：TQ343.6[化学工程—化纤工业]