石墨烯导热复合材料的研究
毕业论文关键词 石墨烯；复合材料；导热；绝缘；
Title The study of the Thermal conductive composites of Graphene
Abstract With the rapid development of power electrical , electronic products, automotive and other fields, heat dissipation is one of the reasons for the limit of the above areas. Thermally conductive polymer materials are mainly pided into two types: on one hand, structural polymer with high thermal conductivity, such as poly acetylene, polyaniline, or a polymer with a complete crystalline structure; On the other hand , Thermal conductive composites filled with high thermal conductivity materials such as BN, carbon fiber, carbon nanotubes and graphite. The thermal conductivity of the polymer itself is very low, and the thermal conductivity of the polymer can be improved by adding fillers with high thermal conductivity. However, due to the existence of the interface thermal resistance between the filler and the matrix, especially for the composite materials with nanometer filler, the thermal conductivity of the composites is not ideal. Therefore, improving the interface structure is particularly important for improving the thermal conductivity of the nanocomposites. Graphene has excellent thermal conductivity, but it also has a high electrical conductivity. In this paper, the electric insulation layer is used to coat the surface of graphene, while reducing the conductivity of graphene sheets, it can also improve the compatibility between the interface of graphene and polymer matrix, and promote the transfer of interfacial heat. The composite nanomaterial with excellent thermal conductivity and electrical insulating property is a key material for the development of multifunction integrated electronic system, which is used in the fields of thermal control and electronic packaging.
Keywords : Composite materials; Graphene; Thermal conductivity; Insulation;
目次
1.引言...1
1.1石墨烯介绍.1
1.1.1石墨烯的特点....1
1.1.2石墨烯的应用....2
1.1.3石墨烯的缺点....2
1.2填充型导热复合材料2
1.2.1金属粉末填充物...2
1.2.2氮化物填料.3
1.2.3碳纤维填料.3
1.3石墨烯填料的导热复合材料4
1.3.1电学性能.4
1.3.2热学性能.4
1.3.3力学性能..5
1.4.1石墨烯复合材料的应用.5
1.4.2导热石墨烯材料的研究.5
1.5课题研究内容和意义6
1.5.1研究内容.6
1.5.2研究意义.6
2石墨烯的包覆实验....6
2.1实验材料...6
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