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The desirable dielectric properties and high thermal conductivity of epoxy composites with the cobweb-structured SiCnw–SiO2–NH2 hybrids

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Abstract

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.

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Acknowledgements

The authors thank the funding from the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2019JM443), the Qingchuang Talents Induction Program of Shandong Higher Education Institution, Natural Science Foundation of Shandong Province (No. ZR2019YQ24), The Science Foundation of Shaanxi Provincial Department of Education (No. 17JS076), Xi’an Key Laboratory of Clean Energy (No. 2019219914SYS014CG036).

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an, 710055, China

    Zhengdong Wang, Xiaozhuo Wang, Nannan Zhao, Jieyu He & Silong Wang

  2. Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, 710049, China

    Zhengdong Wang & Yonghong Cheng

  3. Shaanxi Key Laboratory of Nano Materials and Technology, Xi’an, 710055, China

    Zhengdong Wang

  4. Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China

    Guanglei Wu

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  1. Zhengdong Wang
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Wang, Z., Wang, X., Zhao, N. et al. The desirable dielectric properties and high thermal conductivity of epoxy composites with the cobweb-structured SiCnw–SiO2–NH2 hybrids. J Mater Sci: Mater Electron 32, 20973–20984 (2021). https://doi.org/10.1007/s10854-021-06543-9

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