石墨烯/高分子纳米复合材料中的应力传递现象研究

项目名称： 石墨烯/高分子纳米复合材料中的应力传递现象研究

项目编号： No.11472294

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 马鹏程

作者单位： 中国科学院新疆理化技术研究所

项目金额： 86万元

中文摘要： 石墨烯由于具有独特的二维结构和优异的力学性能，在高分子纳米复合材料领域引起了广泛的研究兴趣。但是成功利用石墨烯制备高性能纳米复合材料需要保证基体和增强相之间可控的界面以便将应力从高分子传递到石墨烯。本项目拟采用显微拉曼光谱并结合现代力学测试手段（纳米压痕、原子力显微技术等），研究石墨烯/高分子纳米复合材料中的应力传递现象，探索负载条件下应力从基体向石墨烯传递的方式和规律，揭示石墨烯和高分子基体之间的界面微观结构和性质对应力转移方式以及传递效率的影响，建立材料的微观界面结构与宏观力学性能之间的关系，为石墨烯/高分子纳米复合材料的设计、制备以及性能优化提供依据。

中文关键词： 石墨烯；高分子纳米复合材料；应力传递；界面效应；力学性能

英文摘要： Due to the unique two-dimensional structure and excellent mechanical properties, graphene has attracted much interest in developing polymer-based nanocomposites. However, one of the prerequisites to prepare mechanically enhanced graphene/polymer nanocomposites is to guarantee the controlled interface between matrix and reinforcement so that the load can be transferred effectively from polymer to graphene via an interface. This proposal aims to study the stress transfer in graphene/polymer nanocomposites under various loading conditions. Different techniques, including micro-Raman spectrometry, nanoindentation as well as atomic force microscopy, will be employed in an effort to reveal the effect of microstructure and properties of interface on the mode and efficiency of stress transfer in nanocomposites. A particular emphasis will be put to establish the correlation between the micro-mechanics of interface and macro-mechanics of bulk nanocomposites. The anticipated outputs of this proposal will provide guidelines for the design, preparation and property optimization of graphene/polymer nanocomposites for various applications.

英文关键词： Graphene;Polymer-based nanocomposites;Stress transfer;Interface/interphase effect;Mechnical properties