Abstract It is of considerable scientific and technological importance to enhance the thermal conductivity coefficient (λ) values of the polymers and polymer composites. Limited understanding of heat transfer in polymers and polymer composites imposes restrictions on the designing and fabricating better thermally conductive polymers and polymer composites. This review attempts to help understand the thermal conduction mechanisms by analyzing the effects of different components in polymers and polymer composites on heat transfer. Factors of micro- and macro-characteristics, such as chain structures, interfaces, functionalization and processing techniques, etc., are all illustrated to elucidate their impacts on the thermal conductivities. In general, chain structures of polymers, intrinsic λ values of thermally conductive fillers and interfacial thermal resistances are the main and internal factors to determine the λ values of polymers and polymer composites. Meantime, processing and environmental factors are only auxiliary factors to improve the thermal conductivities. We expect this review will give some guidance to the future studies in thermally conductive polymers and polymer composites.

中文翻译：

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影响聚合物和聚合物复合材料导热系数的因素：综述

摘要 提高聚合物和聚合物复合材料的导热系数（λ）值具有重要的科学和技术意义。对聚合物和聚合物复合材料中传热的有限理解限制了设计和制造更好的导热聚合物和聚合物复合材料。本综述试图通过分析聚合物和聚合物复合材料中不同组分对传热的影响来帮助理解热传导机制。微观和宏观特征的因素，如链结构、界面、功能化和加工技术等，都被说明以阐明它们对热导率的影响。一般来说，聚合物的链结构，导热填料的固有λ值和界面热阻是决定聚合物和聚合物复合材料λ值的主要和内部因素。同时，加工和环境因素只是提高导热系数的辅助因素。我们希望这篇综述能为导热聚合物和聚合物复合材料的未来研究提供一些指导。