采用超声场下原位聚合法制备聚吡咯/Ni0.5Zn0.5Fe2O4(PPy/NZFO)复合物.分别采用X射线衍射仪(XRD)、扫描电镜(SEM)、四探针测试仪和矢量网络分析仪对其结构、形貌、电性能和吸波性能进行研究.结果表明:APS/Py摩尔比为0.75的条件下可获得团聚程度较小、粒径大小比较均匀的聚吡咯颗粒.随着超声聚合反应时间的延长,聚吡咯颗粒的粒径呈现增大趋势.PPy/NZFO复合物的电导率与PPy含量成正比.复合物的吸波性能较纯PPy有很大提高,在5～20GHz频率范围内,NZFO含量为40％(质量分数)的复合物反射损耗都在-12dB以上,在18.15GHz处具有最大的反射损耗-16.76dB,-15dB有效带宽为1.65GHz.
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