The desirable dielectric properties and high thermal conductivity of epoxy composites with the cobweb-structured SiCnw-SiO2-NH2 hybrids
The desirable dielectric properties and high thermal conductivity of epoxy composites with the cobweb-structured SiCnw-SiO2-NH2 hybrids
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DOI：
10.1007/s10854-021-06543-9
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发表时间：
2021-07-30
影响因子：
2.8
通讯作者：
Cheng, Yonghong
中科院分区：
文献类型：
--
作者：
Wang, Zhengdong;Wang, Xiaozhuo;Cheng, Yonghong
我们报告的制备环氧树脂基复合材料通过插入低负载的核-壳碳化硅晶须-二氧化硅-氨基（命名为SiCnw-SiO2-NH 2）杂化物，同时表现出高的介电常数和热导率（TC），并保持相当低的介电损耗。更有趣的是，由于空间微结构和氢键相互作用，具有蛛网结构的SiCnw-SiO2-NH 2杂化物的环氧树脂复合材料在低填充量下表现出高的热导率。具体来说，含有3.0vol% SiCnw-SiO2-NH 2混合物的样品在0.1Hz下的介电常数达到61.9，而介电损耗仅为0.012，并且具有1.59W/m K的高TC。
We report the preparation of epoxy-based composites by intercalating low loading of core-shell silicon carbide nanowire-silica-amino (named as SiCnw-SiO2-NH2) hybrids, exhibiting simultaneously high permittivity and thermal conductivity (TC) and maintaining rather low dielectric loss. More interestingly, the epoxy composites with the cobweb-structured SiCnw-SiO2-NH2 hybrids exhibited high thermal conductivity at low filler loading due to space micro-structures and hydrogen bond interaction. Specifically, permittivity of the sample with 3.0 vol% SiCnw-SiO2-NH2 hybrids reaches 61.9 under 0.1 Hz, while its dielectric loss is only 0.012, and possessing a high TC of 1.59 W/m K, respectively.