材料科学
复合材料
氮化硼
石墨烯
热导率
各向同性
压缩成型
各向异性
复合数
造型(装饰)
制作
纳米技术
病理
模具
替代医学
物理
医学
量子力学
作者
Hong Zhao,Linxin Ran,Yuanjie Xie,Furong Sun,Longfei Yi,Lijuan Zhao,Jinrong Wu
标识
DOI:10.1016/j.jallcom.2022.167971
摘要
It has long been a challenging problem to fabricate polymeric composites that could combine high thermal conductivity, electrical insulating and anti-static capacity. Dirven by the fascinating features of multilayer structure in nature, here we report a series of multilayered boron nitride/graphene nanoplate (BN/GNP) composites by virtue of a sequentially layered assembly strategy, which is realized through unidirectional freezing drying followed by alternative compression molding. Due to the high orientation state, as well as the synergistic distribution of BN and GNP in multilayered pattern, the compositing BN/GNP film with optimized filler content displays a satisfying in-plane thermal conductivity of 21.9 W m−1 K−1, which is 6161 % and 669 % higher than that of pure CS and isotropic composite, respectively. Meanwhile, the qualification of such compositing film in factual dissipation of exhaust heat generated by complex electronic devices is further explored and demonstrated. Moreover, such compositing film possesses distinct anisotropic electrical performance, which could simultaneously satisfy the requirement of through-plane insulating and in-plane antistatic property. Given such superior performance, as well as the green and facile process, such work is believed to further inspire the design and fabrication of intelligent electronic device with excellent heat dissipation capacity.
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