摘要
以中间相沥青为原料,采用熔融纺丝法制备出中间相沥青纤维,再经炭化、石墨化后进行短切,化学法镀镍处理,最终获得短切镀镍纤维制品。采用扫描电镜(SEM)、电子探针能谱(EDS)、矢量分析仪等分析测试方法对比研究了短切炭(石墨)纤维、镀镍炭(石墨)纤维的镀镍效果、电磁损耗性能及其树脂基复合材料的吸波性能。测试结果表明:镀镍短切石墨纤维复合材料在低频段的吸波效果最好,吸波频带在-10dB的频段为4.6~10.8GHz,带宽为6.2GHz,最大吸收峰在-23dB。
Chopped carbon/graphite fiber was prapared from mesophase pitch by spinning, carbonization and graphitization. A method of electroless nickel plating on surface of both carbon fiber and graphite fiber was observed by SEM and EDS. The electromagnetic performance of the chopped-carbon fiber(CCF), chopped-graphite fiber(CGF), nickeled chopped-carbon fiber(Ni-CCF), nickeled chopped-graphite fiber(Ni-CGF) were studied by a bow testing system. Results show that the Ni-CGF has the largest electromagnetic energy loss. The electromagnetic performance of the chopped fiber/ epoxy resin composite was also investigated by the bow testing system. Results show that the Ni-CGF/ epoxy resin has the best electromagnetic performance at low frequency. The material has absorption under -10 dB in the band of 4.6~10.8 GHz, the band width is about 6.2 GHz. The maximum radar absorption is -23 dB.
出处
《炭素技术》
CAS
CSCD
2011年第1期27-31,共5页
Carbon Techniques
关键词
沥青基炭(石墨)纤维
化学法镀镍
吸波
电磁损耗
反射率
Mesophase pitch based carbon(graphite)fiber
nickel plating
absorbing rardar
electromagnetic energy loss
reflectivity