聚吡咯-Nd3+取代镍铁氧体-石墨微片复合材料的制备及性能

摘要

NiFe2O4-graphite nanosheet (NanoG) and NiNd0.06Fe1.94O4-NanoG composite materials were prepared by using the coprecipitation reaction of Nd3+ substituted nickel ferrite with NanoG.The Ppy-NiFe2O4,Ppy-NiNd0.06Fe1.94O4,Ppy-NiFe2O4-NanoG,and Ppy-NiNd0.06Fe1.94O4-NanoG composite materials were synthesized taking NiFe2O4,NiNd0.06Fe1.94O4,NiFe2O4-NanoG,and NiNd0.06Fe1.94O4-NanoG as templets,and by using the in-situ polymerization process.The structure of the obtained samples was characterized by technical means of IR,XRD,and SEM.The properties such as thermal resistence,electrical,magnetic,and microwave absorbing were measured.The results show that the minimum loss values of Ppy-NiFe2O4,Ppy-NiNd0.06Fe1.94O4,Ppy-NiFe2O4-NanoG,and Ppy-NiNd0.06Fe1.94O4-NanoG composite materials are-13.50,-15.19,-20.03,-21.95dB at frequencies of 11.92,11.92,9.29,9.33GHz,while the minimum loss value of Ppy is-12.09dB at frequency of 10.2GHz.%采用共沉淀法,将稀土金属Nd3+取代的镍铁氧体与纳米石墨微片(NanoG)进行复合,制备NiFe2O4-NanoG和NiNd0.06Fe1.94O4-NanoG复合材料,分别以NiFe2O4、NiNd0.06Fe1.94O4、NiFe2O4-NanoG和聚吡咯(PPy)-NiNd0.06Fe1.94O4-NanoG为模板,采用原位聚合法,制备PPy-NiFe2O4、PPy-NiNd0.06Fe1.94O4、PPy-NiFe2O4-NanoG和PPy-NiNd0.06Fe1.94O4-NanoG复合材料,采用红外光谱、X射线衍射、扫描电子显微镜等技术手段表征其结构,并测试其耐热性、电、磁及微波吸收性能.结果表明,PPy-NiFe2O4、PPy-NiNd0.06Fe1.94O4、PPy-NiFe2O4-NanoG、PPy-NiNd0.06Fe1.94O4-NanoG在频率为11.92、11.92、9.29、9.33GHz处的最小反射损耗分别为-13.50、-15.19、-20.03、-21.95dB,PPy在频率为10.2GHz处的最小反射损耗为-12.09dB.