[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(guān)鍵字：thermal conductivities， polymer composites
論文來源：期刊
具體來源：Composites Science and Technology
發(fā)表時(shí)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(dǎo)熱聚合物及其復(fù)合材料的研究和開發(fā)已成為功能復(fù)合材料的研究熱點(diǎn)之一。深入認(rèn)識(shí)和理解聚合物及其復(fù)合材料導(dǎo)熱性能的各項(xiàng)影響因素對(duì)于設(shè)計(jì)和制備導(dǎo)熱/承載一體化聚合物及其復(fù)合材料具有重要理論指導(dǎo)意義。本文綜述了近些年國(guó)內(nèi)外學(xué)者在導(dǎo)熱材料領(lǐng)域的最新研究成果，重點(diǎn)闡述了導(dǎo)熱聚合物及其復(fù)合材料導(dǎo)熱性能的各種內(nèi)在影響因素。微納尺度上涉及聚合物鏈結(jié)構(gòu)及聚集態(tài)結(jié)構(gòu)、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(jié)能為導(dǎo)熱/承載一體化聚合物及其復(fù)合材料的設(shè)計(jì)研發(fā)提供一種新方法、理論依據(jù)和技術(shù)支撐，并指導(dǎo)該類材料在有機(jī)太陽能電池、儲(chǔ)能材料、特高壓輸電設(shè)備、大功率LEDs和5G通訊服務(wù)等高導(dǎo)熱系統(tǒng)中的生產(chǎn)和應(yīng)用。