Zn0.6Mn0.2Ni0.2Fe2O4聚邻甲基苯胺复合物的制备和电磁性能

Preparation and Electrical-magnetic Properties of Zn_(0.6)Mn_(0.2)Ni_(0.2)Fe_2O_4/poly(o-toluidine) Composites

用化学沉淀法和原位聚合法分别制备了Zn0.6Mn0.2Ni0.2Fe2O4铁氧体纳米粒子和Zn0.6Mn0.2Ni0.2Fe2O4铁氧体/聚邻甲基苯胺复合微粒(ZMNF/POT).通过现代测试技术表征了样品组成、结构、形貌和电-磁性能.结果表明,POT对ZMNF粒子具有较好的包覆作用;复合物电导率与POT的含量成正比,而磁性能与ZMNF粒子的含量相关;在1～15MHz频段内,POT和ZMNF/POT复合物的介电损耗与其电导率表现出一致性;复合物具有可观的磁损耗,比磁介质型ZMNF的大,且ZMNF含量为31.74 wt%的复合物的磁损耗最大,有望作为屏蔽和吸收电磁波材料获得应用.

Zn0.6Mno.2Ni0.2Fe2O4 ferrite and their poly（otoluidine） composites （ZMNF/POT） were prepared by a chemical precipitation method and an in situ polymerization method, respectively. Their composition, structure, morphology, conductivity and magnetic properties were characterized by means of modem testing technology. The results showed that the ZMNF particles were covered well by the POT, the conductivity of composites were mainly attributed to the POT content, while their magnetic properties were related to the ZMNF content. In the range of 1 - 15 MHz, the dielectric loss and conductivity of the POT and ZMNF/POT composites had better consistency with their conductivity; the magnetic loss of the composites was quite considerable and superior to that of the magnetic type ZMNF, and reached the maximum when the content of ZMNF is 31.74 wt% in the composites. The composites are hoped to used as advancing microwave ab- sorption and shielding materials.