导电磁性聚合物－无机纳米复合材料的研究

The four kinds of magnetic nanoparticles of Fe3O4、Fe、Co、Ni were synthesized by coprecipitation, inverse microemulsion and organic alcohol reduction in liquid phase, respectively. The Fe3O4 - polyaniline（PAn）nanocomposite particles and the Fe-epoxy resin nanocomposite particles were available using in-situ composite technology. The magnetic nanoparticles and the polymer-based magnetic nanocomposites were fully characterized by FTIR、XRD、XPS、SEM和HREM et al.. The relationships between the microstructure and the preparation conditions, the properties of magnetorheological effect, microwave absorbing properties and magnetoresistance were studied in detail. At the same time, the preparation, characterization and electrorheological effect of PAn-BaTiO3 nanocomposite particles were also studied.

有机---无机纳米复合材料是纳米材料工程的重要组成部分和材料学的研究前沿.本项目利用无机纳米粒子的低维特性和功能特性,设计并合成既导电又有磁性的聚合物--无机纳米复合牧?研究其分子设计原理、化学合成、表征及其结构与电、磁功能、磁电阻效应、加工性能等的关系。探索它们作为巨磁电阻材料、电磁流变液和微波吸收材料应用的可能性。