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Thermal conductivity of graphene-based polymer nanocomposites
Materials Science and Engineering: R: Reports ( IF 31.0 ) Pub Date : 2020-09-22 , DOI: 10.1016/j.mser.2020.100577
Xingyi Huang , Chunyi Zhi , Ying Lin , Hua Bao , Guangning Wu , Pingkai Jiang , Yiu-Wing Mai

As a material possessing extremely high thermal conductivity, graphene has been considered as the ultimate filler for fabrication of highly thermally conductive polymer composites. In the past decade, graphene and its derivatives were demonstrated in many studies to be very effective in enhancing the thermal conductivity of various polymers. This paper reviews current progress in the development of graphene/polymer composites with high thermal conductivity. We began with the effects of isotopes, defects/doping, edges and substrate, polycrystallinity, functionalization, size and layer number, and folding/twisting on the thermal conductivity of graphene. We then modelled the thermal conductivity of graphene/polymer composites and, through molecular dynamics (MD) simulations, demonstrated its dependence on interfacial thermal conductance as well as size, dispersion and volume fraction of graphene. After a critique of recent studies on thermally conductive graphene/polymer composites and their potential applications, we identified several outstanding issues, new challenges and opportunities for future endeavours.



中文翻译:

石墨烯基聚合物纳米复合材料的导热系数

作为具有极高导热率的材料,石墨烯被认为是制造高导热性聚合物复合材料的最终填料。在过去的十年中,石墨烯及其衍生物在许多研究中被证明在增强各种聚合物的导热性方面非常有效。本文回顾了目前高导热率石墨烯/聚合物复合材料的开发进展。我们从同位素,缺陷/掺杂,边缘和衬底,多晶性,功能化,尺寸和层数以及折叠/扭曲对石墨烯导热率的影响开始。然后,我们对石墨烯/聚合物复合材料的导热系数进行建模,并通过分子动力学(MD)模拟,证明了其对界面热导以及石墨烯的尺寸,分散度和体积分数的依赖性。在对导热石墨烯/聚合物复合材料及其潜在应用的最新研究进行评论之后,我们确定了一些突出的问题,新的挑战和未来努力的机会。

更新日期:2020-09-22
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