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采用化学镀法在碳纳米管表面均匀地镀覆了磁性镍-钴合金层及采用原位法制备了化学镀镍-钴合金碳纳米管/聚吡咯复合吸波材料。采用XRD、TEM、SEM、FT IR及振动样品磁强计等对碳纳米管镀镍-钴合金层的形貌、微结构与磁性能进行了分析,还采用网络矢量分析仪对该复合材料在3~6 GHz频段内的吸波性能进行了研究。结果表明,镍-钴合金层连续、均匀、完整地包覆在碳纳米管表面,化学镀后镀层呈非晶态。通过在碳纳米管表面镀上磁性金属镍-钴合金层可提升碳纳米管/聚吡咯复合材料的吸波性能,其复合材料最大反射率为-20d B。
Electroless plating was used to uniformly coat the magnetic nickel-cobalt alloy layer on the surface of carbon nanotubes and the electroless nickel-cobalt alloy carbon nanotube / polypyrrole composite absorbing material was prepared by in-situ method. The morphology, microstructure and magnetic properties of the Ni-Co alloy coating were analyzed by XRD, TEM, SEM, FT-IR and vibrating sample magnetometer. The network was also analyzed by using a network vector analyzer The microwave absorbing performance in the 3 ~ 6 GHz band was studied. The results show that the Ni - Co alloy layer is continuously, uniformly and completely coated on the surface of the carbon nanotubes. The electroless plating layer is amorphous. The microwave absorbing properties of carbon nanotube / polypyrrole composite can be enhanced by coating the surface of carbon nanotubes with a magnetic nickel-cobalt alloy layer. The maximum reflectance of the composite is -20d B.