聚吡咯/Ni_(0.5)Zn_(0.5)Fe_2O_4复合物的合成与表征  

Synthesis and Characterization of Polypyrrole/Ni_(0.5)Zn_(0.5)Fe_2O_4 Composites

作　　者：赵海涛[1] 刘瑞萍[1] 李成吾[1] 马瑞廷[1] 

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159

出　　处：《材料工程》2014年第12期18-22,共5页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(51303108);沈阳市科技局应用基础研究计划资助项目(F14-231-1-33);沈阳理工大学材料加工工程重点学科开放基金资助项目(4771004kfx11)

摘　　要：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。The polypyrrole/Ni0.5 Zn0.5 Fe2O4 （PPy/NZFO） composites were prepared by in-situ poly- merization method under the ultrasonic field. The structural characteristics, morphology, electric properties and wave absorbing properties of composites were analyzed by X-ray diffractometer（XRD）, scanning electron microscope（SEM）, four-probe instrument and network analyzer, respectively. The results indicate that little united and uniform polypyrrole particles can be made when APS/Py mole ra- tio is 0.75. The particle size of polypyrrole increases with increasing of ultrasonic reacting time and electrical conductivity is directly proportional to the PPy content. The wave absorbing properties of the Ni0.5Zn0.5 Fe2O4/polypyrrole composites are higher than that of pure PPy. The reflection loss of the PPy/NZFO composite with NZFO content of 40% （mass fraction） is above -12dB within 5-20GHz, with a minimum reflection loss of --16.76dB at 18.15GHz and a bandwidth of -15dB over the extended frequency range of 1.65GHz.

关 键 词：NI0.5ZN0.5FE2O4 聚吡咯 电性能 吸波性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TM25[电气工程—电工理论与新技术]