聚合物基导热复合材料的制备与性能研究进展

Progress of Fabrication and Thermal Conductivity for Polymer Composites

近年来,生活及工业上人们对聚合物基热管理材料的需求越来越大,因此对其导热系数或散热能力的提高引起了人们极大的研究兴趣。本文较为详细地介绍了本征型聚合物和填充型导热复合材料的导热机理及影响因素,在此基础上综述了几种不同类型的导热填料以及混合填料填充导热复合材料的制备方法和提高导热性能的途径。重点介绍了石墨烯在导热领域优异的物理性质以及多元填料复合材料中的双逾渗效应和协同效应,并从科学文献中给出了详细的实例,为高导热复合材料提供了指导。

In recent years, there is a growing demand for polymer-based thermal management materials in life and industry. Therefore, the improvement of thermal conductivity or heat dissipation capacity has attracted great research interest. In this paper, the thermal conductivity mechanism and influencing factors of intrinsic polymer and filled thermal composites are introduced in detail. On this basis, several different types of thermal conductivity fillers, the preparation methods of mixed fillers and the ways to improve thermal conductivity properties were reviewed. This paper highlighted the excellent physical properties of graphene in the field of heat conduction and the double percolation effect and synergistic effect in multi-filler composites. And the detailed examples are given in the scientific literature, which provides guidance for high thermal conductivity composites.