三维骨架石墨烯/高聚物复合材料的力学和热学性能研究

项目名称： 三维骨架石墨烯/高聚物复合材料的力学和热学性能研究

项目编号： No.11272008

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： 白树林

作者单位： 北京大学

项目金额： 86万元

中文摘要： 通过实验测试与理论分析相结合的方法，开展三维骨架石墨烯/高聚物复合材料的力学性能和热学性能的研究。首先采用化学气相沉积法制备三维骨架石墨烯，表征石墨烯的微观结构；然后采用滴覆法制备三维骨架石墨烯/高聚物复合材料，并测定其可能的空隙缺陷、石墨烯骨架的完整性，以及石墨烯与高聚物的界面粘接状态等。实验测定复合材料的拉伸与压缩性能、热导率，以及压缩变形对于复合材料热导率的影响规律，进而揭示复合材料高热导率的机理。采用构元组集模型和细观力学方法，建立预测复合材料等效弹性模量和热导率的模型。基于理论和实验研究的结果，建立三维骨架石墨烯/高聚物复合材料制备与性能表征的一套实验和理论方法，为其工程应用提供理论和实验依据。

中文关键词： 石墨烯泡沫；取向石墨烯；高聚物复合材料；热学性能；力学性能

英文摘要： By the combination of experimental tests and theroritical analysis, both mechanical and thermal properties of three dimensional graphene/polymer composites will be investigated. Firstly, three dimensional graphenes are fabricated by chemical vapor deposition method, their microstructures are characterized. Then, by using the dripping method, the three dimensional graphene/polymer composites will be prepared and the possible voids, graphene structure integrality and interface bonding between graphene and polymer matrix will be examined. The tension and compression properties, thermal conductivity as well as the effect of compression on the thermal conductivity will be studied experimentally. The mechanisms of high thermal conductivity of such composites will be revealed. The component assembly model and micromechanic method will be used to predict the equivalent elastic moduli and thermal conductivity. Based on the theoretical and experimental results, a series of processing and properties characterization methods for three dimentional graphene/polymer composites will be established, which will provide theoretical and experimental foundation in engineering applications.

英文关键词： graphene foam；aligned graphene；polymer composite；thermal properties；mechanical properties