材料科学
热导率
复合材料
氮化硼
聚丙烯
复合数
皮克林乳液
涂层
热传导
电导率
造型(装饰)
乳状液
化学工程
纳米颗粒
纳米技术
工程类
化学
物理化学
作者
Zhongquan Charlie Zheng,Qipeng Lu,Chenyu Wang,Shengfei Hu,Rong Zhang,Qingting Liu,Xudong Fu
摘要
Abstract Polypropylene (PP) has the advantages of corrosion resistance, easy processing, and low dielectric loss, but its low thermal conductivity limits the application of its composites in fields such as electronic packaging. To solve this problem, in this work, composite microspheres with the segregated structure were prepared by coating boron nitride nanosheets (BNNSs) on the PP surface by Pickering‐like emulsion method, and BNNSs@PP composites with three‐dimensional thermal conductivity network were obtained after molding. Due to the high thermal conductivity of BNNSs and the formation of perfect thermal conduction pathways, the thermal conductivity of the composites reached 1.71 W m −1 K −1 when the content of BNNSs was 10.1 wt%, which was a 713% increase in thermal conductivity for that of pure PP. At the same time, the mechanical properties of the composites were ensured. This method provides a simple and effective technique to improve the thermal conductivity of PP‐based thermally conductive composites, which has a wide application potential in electronic packaging.
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