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Ultrahigh thermal conductivity of epoxy composites based on curling bioinspired functionalized graphite films for thermal management application
來源:劉迎春副教授個人網(wǎng)站 發(fā)布日期:2022-12-20
作者:Yingchun Liu, Bing Chen, Kun Wu and et al.
關(guān)鍵字:Graphite film, Epoxy, Thermal conductivity, Thermal conductive network
論文來源:期刊
具體來源:Composites Part A: Applied Science and Manufacturing
發(fā)表時間:2021年

Unsatisfactory thermal conductive network (TCN) and poor heat conduction interface have limited thermal conductivity (TC) enhancement in the polymeric composites. In this study, inspired by mussels and a Chinese delicacy called the Hanamaki, a facile and environmental strategy is developed to prepare hierarchically ordered graphite film strips@polydopamine/epoxy (GFs@PDA/EP) composites. Organized TCNs and an optimized interface were constructed and thus an ultrahigh TC of GFs/EP (899.44 ± 18.51 W m?1 K?1) in perpendicular direction was obtained. Structural analysis and heat-transfer passages model suggests that superior TCNs were constructed and the designed structure is conducive for heat conduction in the perpendicular direction. Moreover, the interfacial bonding of GFs@PDA with EP matrix contributes to the remarkable enhancement of TC with increasing of PDA coverage. A decrease of ~43 °C in the thermal management experiment of LED chips indicated that it most likely becomes a good candidate in electronic device-cooling application.


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