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[Compos Sci Technol]Factors affecting thermal conductivities of the polymers and polymer composites: A review.
作者:Yongqiang Guo, Kunpeng Ruan, Xuetao Shi, Xutong Yang and Junwei Gu*
關鍵字:thermal conductivities, polymer composites
論文來源:期刊
具體來源:Composites Science and Technology
發表時間:2020年

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.

高導熱聚合物及其復合材料的研究和開發已成為功能復合材料的研究熱點之一。深入認識和理解聚合物及其復合材料導熱性能的各項影響因素對于設計和制備導熱/承載一體化聚合物及其復合材料具有重要理論指導意義。本文綜述了近些年國內外學者在導熱材料領域的最新研究成果,重點闡述了導熱聚合物及其復合材料導熱性能的各種內在影響因素。微納尺度上涉及聚合物鏈結構及聚集態結構、填料/基體界面性能等;宏觀尺度上涉及填料形狀&尺寸、加工方法等。希望通過本文的歸納總結能為導熱/承載一體化聚合物及其復合材料的設計研發提供一種新方法、理論依據和技術支撐,并指導該類材料在有機太陽能電池、儲能材料、特高壓輸電設備、大功率LEDs和5G通訊服務等高導熱系統中的生產和應用。

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