纳米磁性微粒稀土掺杂导电聚合物磁热及热电性质研究

项目名称： 纳米磁性微粒稀土掺杂导电聚合物磁热及热电性质研究

项目编号： No.50874119

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 方正

作者单位： 中南大学

项目金额： 40万元

中文摘要： 在制备粒度不同稀土掺杂纳米磁核及组装纳米磁核导电聚合物（如PEG－20000）复合微粒条件下以及核磁共振、红外、紫外和现代表面测定和分子模拟的基础上，弄清楚复合微粒微观结构、介电性能、等温磁熵变和绝热温变，揭示其宏观介电性质和分子微观极化性质之间的关系；了解获得性能稳定的复合体微粒的外场条件，从理论上阐明掺杂纳米磁性微粒导电聚合物膜磁热效应和热电效应对其理化性质的影响。获得纳米磁核和导电聚合物膜分子的动态结构，及分子水平上的非共价键力中磁场力、静电力、范德华力、氢键力之间的比例，以正确设计稀土掺杂纳米微粒磁核和导电聚合物膜材料。

中文关键词： 导电聚合物;磁热;热电;纳米 ;模拟

英文摘要： By preparing the material with nano magnetic core and assembling it into a sort of nano magnetic-conductive-polymer and analyzing the structure and properties by the modern instruments such as NMR, Infrared, UV and modern surface detector, as well as by the molecular simulation, it has been got the microstructure, dielectric properties, isothermal magnetic entropy change, adiabat temperature change, and the relationship between macro-dielectric properties and micro-polarization properties of this kind of the complex polymer particle with a nano magnetic-conductive core. It has been clarified the outside field conditions in order to get the stable compound particle, and the thermal and thermal-electric effect of the compound on its physicochemical properties in theory. The obtained information of the dynamic structure of the nano magnetic core and the conductive-polymer membrance molecules,and the ratio of various forces in non- covalent,such as magnetic field strength, static electricity, Van der Waals force and hydrogen bonding,on the level of molecule will provide a possibility to be used to design nano nuclear magnetic material doping with rare earth and conductive polymer menbrance material.

英文关键词： conductive polymer; magnetocaloric; thermoelectric; nano particle; simulation