热致相分离法调控三元导电高分子纳米复合材料的形态、结构与性能

项目名称： 热致相分离法调控三元导电高分子纳米复合材料的形态、结构与性能

项目编号： No.51273173

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 左敏

作者单位： 浙江大学

项目金额： 80万元

中文摘要： 以富勒烯（零维球状）、碳纳米管（一维管状）和石墨烯（二维层状）三种富勒碳族纳米导电粒子为填料，与具有临界相行为的二元共混物复合，以共混基体的相分离为手段有效调控导电填料分布，制备高性能、低渗流阈值的三元导电聚合物基纳米复合材料。借助流变响应与导电性能同步测试结合电子显微分析方法，考察不同拓扑形态的纳米填料对部分相容的共混物基体的凝聚态结构演变和相分离行为的影响，探明不同拓扑形态的导电填料对于稳定共混物基体相形态以抑制流动导致的基体分散相粗化的作用，寻求相分离过程中共混物基体相形态随时间和温度的演变对导电填料在共混物基体中分布状态的影响规律，阐明导电填料在聚合物共混基体中的迁移、聚集及网络形成过程，建立该类导电纳米复合材料的相形态-粘弹响应-导电性能之间的关联，为高性能导电高分子纳米复合材料的开发和制备提供理论指导。

中文关键词： 相分离；纳米填料；相形态；导电性能；流变导电同步测试

英文摘要： Three kinds of conductive nano-particles, fullerenes, carbon nanotubes and graphenes will be selected as fillers and compounded with binary polymer blends with critical phase behavior.The matrix phase-separation will be used as a tool to control the dispersion of conductive fillers and the high-performance ternary conductive polymeric nanocomposites with low percolation thresholds will be prepared. In vitue of electron microscopic analysis and simultaneous measurement of rheological and conductive behaviors, the influence of nanofillers with different toplogical shapes on the evolution of condensed structure and phase-separation behaviors for the partiall miscible blend matrix will be investigated and the effect of different conductive fillers on stabilizing the droplets against flow induced coalescence will be also detected. Furthermore, the influence law of the morphology evolution for the blend matrix with time and temperature during phase-separation on the dispersion of conductive fillers in the nanocomposites will be explored to clarify the migration, aggregation of condunctive fillers in the blend matrix and the formation of conductive network. The correlation among the morphology, viscoelastic response and conductive properties of such conductive polymeric composites will be established to provide a theor

英文关键词： Phase separation；nano-fillers；Morphology；Conductive properties；Simultaneous measurements