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用溶液填充法制备了Co0.6Cu0.16Ni0.24Fe2O4铁氧体/碳纳米管(CCNF/MWNTs)复合物.通过现代测试技术表征了样品的结构、热稳定性、形貌和吸波性能.探讨了铁离子浓度、反应时间、煅烧温度等对其电-磁性能的影响.结果表明,复合物的电导率主要与其中MWNTs的含量有关;磁性与MWNTs中填充CCNF的量成正比.当[Fe3+]=0.25mol/L,填充时间为18h,煅烧温度为350°C时,所制备的CCNF/MWNTs复合物具有最佳的介电损耗和磁损耗性能,且复合物在9.76GHz处的反射损耗极值为22.47dB,有效带宽大于2.0GHz.由此推测,CCNF/MWNTs复合物是一类具有较大潜在应用价值的电磁波吸收材料.
The Co0.6Cu0.16Ni0.24Fe2O4 ferrite / carbon nanotubes (CCNF / MWNTs) composites were prepared by solution filling method, and the structure, thermal stability, morphology and microwave absorbing properties of the samples were characterized by modern testing techniques. The results show that the conductivity of the composite is mainly related to the content of MWNTs and the proportion of magnetic to the amount of CCNF filled in MWNTs.When [Fe3 + ] = 0.25mol / L, the filling time is 18h, the calcination temperature is 350 ° C, the prepared CCNF / MWNTs composite has the best dielectric loss and magnetic loss properties, and the composite has a reflection loss at 9.76GHz The extremum is 22.47dB and the effective bandwidth is greater than 2.0GHz.It is presumed that the CCNF / MWNTs composite is a kind of electromagnetic wave absorbing material with great potential application value.