微波热解CVI工艺制备炭/炭复合材料仿生界面研究

项目名称： 微波热解CVI工艺制备炭/炭复合材料仿生界面研究

项目编号： No.51202150

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机非金属材料学科

项目作者： 邹继兆

作者单位： 深圳大学

项目金额： 25万元

中文摘要： 本项目拟在界面的形成过程中，引入贝壳矿物桥结构，强韧化炭/炭复合材料界面，即利用微波诱导表面活性点，在炭纤维表面原位生长气相炭纤维和热解炭，形成仿贝壳矿物桥界面结构，发挥炭纤维增强体的高强度性能，提高炭/炭复合材料的综合性能。系统深入研究微波诱导基体表面活性点的作用机制，进一步探索活性点对气相炭纤维无催化剂生长的影响规律，实现气相炭纤维的无催化可控生长；建立仿生微结构的力学模型，确立仿生界面微结构与C/C复合材料的强度和韧性之间的关系，揭示仿生微结构强韧化C/C复合材料界面的机制，为复合材料的仿生设计提供理论依据。

中文关键词： C/C复合材料；微波；碳纤维；霍尔效应；

英文摘要： Mineral bridges structure is introduced into the interfaces of carbon/carbon composites to improve fracture strength and fracture toughness in the forming of interface. In another words, by making use of microwave inducing surface activity, gas grown carbon fibers and pyrocarbons are prepared successively in the carbon fiber preforms, forming bionic interface structures to improve the comprehensive property of carbon/carbon composites. The inducing mechanisms of microwave are studied systematically, the relation between the surface activity and gas grown carbon fibers is explored further, accordingly realize the growth of gas carbon fibers without catalyst. The relations of the bionic interface structures and the property of carbon/carbon composites is established by mechanical models and mechanical data of bionic microstructures, the mechanisms of bionic microstructures toughing carbon/carbon composites are revealed, thereby provide a theoretical basis for the bionic design of composites.

英文关键词： C/C composites；microwave；carbon fiber；Hell effect；