环氧树脂自修复用纳米复合微胶囊的构建及其多级多样性修复机理研究

项目名称： 环氧树脂自修复用纳米复合微胶囊的构建及其多级多样性修复机理研究

项目编号： No.21274046

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 王朝阳

作者单位： 华南理工大学

项目金额： 83万元

中文摘要： 自修复是生物体的重要特征之一，也是材料领域追求的理想目标。通过模仿生物体受损愈合的原理，近年来高速发展的聚合物基自修复复合材料成为高分子科学界的研究热点之一。而传统的微胶囊型聚合物基自修复复合材料存在修复机理和修复过程过于简单、修复时间过长、修复效率不高等缺点。Pickering乳液模板技术可以非常方便地制备核-壳结构的有机/无机杂化微球，在微纳结构材料构建方面具有重大应用前景。本课题采用无机纳米粒子稳定的Pickering乳液为模板制备纳米复合超结构自修复微胶囊。研究其对环氧树脂基材的自修复效果。本项目采用多级多样性自修复机理，实现材料的高效协同自修复，如微胶囊宽的粒径分布适应大小裂纹的修复；无机纳米粒子可以原位增强材料，提高修复效率；采用溶剂先溶胀裂缝表面，再用多种树脂修复剂填充并修复受损区域；快速自修复微胶囊修复小裂纹等等。研究目标是制备性能更加优异的聚合物自修复复合材料。

中文关键词： 皮克林乳液；自修复；微胶囊；纳米复合；环氧树脂

英文摘要： Self-healing or self-repairing is one of the most important characteristics of life and also a perfect property for materials. The development and characterization of self-healing synthetic polymeric materials have been inspired by biological systems in which damage triggers an autonomic healing response. This is an emerging and fascinating area of research that could significantly extend the working life and safety of the polymeric components for a broad range of applications. However, conventional microcapsule-based self-healing system has some disadvantages. All of the self-healing concepts attempt to complete healing in a single step either through in-situ curing of a new phase or a permanent resealing of newly exposed surfaces. Time for healing is too long and the healing efficiency is not very high. The emulsions stabilized by particles are called Pickering emulsions. The technology based on Pickering emulsion template is powerful tool to prepare organic/inorganic hybrid microparticles with a core-shell structure, which has a significant potential application in the fabrication for materials with a micro-/nanometer structure. In this proposal, nanocomposite self-healing microcapsules with supracolloidal structures will be prepared by templating nanopartilce-stablized Pickering emulsions. The healing effici

英文关键词： Pickering emulsions；self-healing；microcapsules；nanocompoisites；epoxy resin