沥青基短切炭纤维/石墨纤维表面镀镍及其吸波性能  

Preparation and electromagnetic performance of mesophase pitch-based chopped carbon/graphite fiber with nickel plated

作　　者：张莹莹[1] 迟伟东[1] 沈曾民[1] 刘辉[1] 胡琳[1] 

机构地区：[1]北京化工大学碳纤维及功能高分子教育部重点实验室国家碳纤维工程技术研究中心,北京100029

出　　处：《炭素技术》2011年第1期27-31,共5页Carbon Techniques

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.

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 

分 类 号：TB34[一般工业技术—材料科学与工程] TB333