Zn-Ni-Cu铁氧体/聚邻甲氧基苯胺复合物的制备及电磁性能  

Preparation and Electromagnetic Properties of Zn-Ni-Cu ferrites/poly(o-methoxyaniline) composites

作　　者：李涓碧[1,2] 吴雪[1,2] 李良超[1,2] 陈瑶瑶 丁艳[1,2] 胡迪琼 傅樑芳[1,2] 

机构地区：[1]先进催化材料教育部重点实验室 [2]浙江师范大学化学系

出　　处：《中国科学：化学》2014年第3期309-319,共11页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(21071125);浙江省磁性材料重点创新团队子项目(2011R09006-06)

摘　　要：用共沉淀法和溶液原位聚合法分别制备了锌镍铜铁氧体粉末(ZNCF)及其聚邻甲氧基苯胺(POMA)复合物.用粉末X-射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、振动样品磁强计(VSM)等分别表征了产物的结构、形貌、电磁性能.结果表明,ZNCF/POMA复合物的组分之间存在一定的相互作用;POMA对ZNCF粒子的包覆能起到调控样品电磁性能的作用,复合物的磁性能随POMA含量的增加而减小,而电导率则相反;与单一组分相比,POMA/ZNCF复合物表现出更优良的电磁波吸收性能,ωZNCF为20%的复合物的反射损耗峰值和有效带宽分别为-27.32 dB和8.81 GHz,峰值对应的共振频率为11.61 GHz,是颇具应用前景的电磁波吸收材料.Zn-Ni-Cu ferrites （ZNCF） and their poly（o-methoxyaniline） composites （ZNCF/POMA） were prepared by a chemical precipitation method and an in situ polymerization method, respectively. The structures, morphology, conductivity and magnetic properties of as-obtained samples were characterized by means of modem analytical techniques such as X-ray diffraction analysis （XRD）, scanning electron microscope （SEM）, transmission electron microscope （TEM）, vibrating sample magnetometer （VSM）, etc. The results showed that there were some interactions between the component in the ZNCF/POM composites. The magnetization of the composites decreased with increase of the poly（o-methoxyaniline） content, while the conductivity performed contrary. Hence, the electrical and magnetic properties of the composites can be modified by changing the content of the components. Compared to the single component, the POMA/ZNCF compounds exhibited excellent absorbing propriety on electromagnetic wave. The POMA/ZNCF compounds with COZNCF of 20% had the minimum reflection loss of-27.32 dB in resonance frequency of 11.61 GHz and an available bandwidth of 8.81 GHz, and it is a kind of absorbing materials with excellent application prospect.

关 键 词：锌镍铜铁氧体 聚邻甲氧基苯胺 电导率 磁性 反射损耗 

分 类 号：O614[理学—无机化学]