纳米结构
热导率
材料科学
复合数
壳体(结构)
铝
方向(向量空间)
热的
电导率
化学工程
复合材料
纳米技术
化学
物理化学
热力学
物理
几何学
工程类
数学
作者
Jinxin Hu,Xiaoshuang Li,Liyang Zhu,Meng Yu,Pei-ze Yang,Hongyue Chu,Bing Geng,Hui Li,Mei Yan
标识
DOI:10.1021/acs.iecr.4c00040
摘要
This article presents the design of a core–shell–shell nanostructured spherical aluminum powder (Al@PDA@POSS) through in-situ polymerization. The transient plane source method and infrared thermal imaging results demonstrate that the double-shell nanostructure can significantly enhance the compatibility of aluminum powder in an epoxy resin. Al@PDA@POSS was self-assembled with magnetic iron oxide to form a hybrid filler (Al@PDA@POSS-Fe3O4), resulting in magnetic properties. The hybrid fillers were precisely oriented in the resin matrix driven by magnetic force, constructing an effective thermal conduction path. Magnetic orientation plays a key role during the construction of a "thermal bridge". The directionally arranged filler composite (OA-Al@PDA@POSS-Fe3O4/EP) exhibits a thermal conductivity of 1.249 W/(m K) and an electrical conductivity of 5.56 × 10–10 S/cm at a load of 40 wt %. Compared to traditional composites, OA-Al@PDA@POSS-Fe3O4/EP composites not only possess high thermal conductivity and excellent insulation properties but also exhibit good thermal mechanical properties.
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