通过电场辅助取向纳米粒子的方法可以制备功能各向异性的高分子基复合膜材料。纳米粒子在外场自发取向组装形成各向异性纳米结构，对所形成复合材料薄膜的电学、光学等性能有直接的影响。本项目拟通过对石墨烯进行表面烷基化改性，探究电场下分散在聚二甲基硅氧烷（PDMS）预聚体中的石墨烯的取向机理，通过组建薄膜透光率-取向结构在线监测平台，研究石墨烯在电场下实时运动规律及所形成取向结构，建立电场强度、体系粘度、取向速度、取向度之间关系模型。基于电场取向烷基化石墨烯制备各向异性纳米结构的新方法，制备各向异性石墨烯/硅橡胶（G-ODA/PDMS）复合薄膜，研究石墨烯在PDMS中因取向所形成的三维阵列结构对复合薄膜的介电性能、透光率等性能的影响机制，为各向异性纳米复合材料的研究提供新型纳米复合方法及理论指导。

Composite films with anisotropic structure inside can be achieved by external field assisted alignment of nanoparticles in polymer matrix. Nanoparticles dispersed in matrix usually self-assemble to anisotropic nanostructures under external field, which directly impact the electrical and optical properties of composite film. In this project, hence, focuses on increasing the understanding of electric field assisted assembly mechanism of alkylated graphene dispersed in PDMS prepolymer. With the help of custom designed testing system that can monitor optical transmittance and alignment structure on real time, motion laws and formed structure under electric field of graphene can be observed and analyzed, then the model that reflects the relationship among magnetic strength, system viscosity, alignment rate and orientation degree, can be established. Base on this novel technology that graphene aligned by electric field, anisotropic graphene/PDMS rubber composite films will be prepared, and the influence mechanism of dielectric, transmittance and other properties caused by forming three-dimensional graphene array. This work will provide a new processing method and theoretical guidance for the development and application of anisotropic nanocomposites.