Vertically Aligned and Interconnected SiC Nanowire Networks Leading to Significantly Enhanced Thermal Conductivity of Polymer Composites

ACS Applied Materials & Interfaces
Yimin YaoChing-Ping Wong

Abstract

Efficient heat removal via thermal management materials has become one of the most critical challenges in the development of modern microelectronic devices. However, previously reported polymer composites exhibit limited enhancement of thermal conductivity, even when highly loaded with thermally conductive fillers, because of the lack of efficient heat transfer pathways. Herein, we report vertically aligned and interconnected SiC nanowire (SiCNW) networks as efficient fillers for polymer composites, achieving significantly enhanced thermal conductivity. The SiCNW networks are produced by freeze-casting nanowire aqueous suspensions followed by thermal sintering to consolidate the nanowire junctions, exhibiting a hierarchical architecture in which honeycomb-like SiCNW layers are aligned. The composite obtained by infiltrating SiCNW networks with epoxy resin, at a relatively low SiCNW loading of 2.17 vol %, represents a high through-plane thermal conductivity (1.67 W m-1 K-1) compared to the pure matrix, which is equivalent to a significant enhancement of 406.6% per 1 vol % loading. The orderly SiCNW network which can act as a macroscopic expressway for phonon transport is believed to be the main contributor for the excellent ther...Continue Reading

References

Jan 28, 2006·Science·Sylvain DevilleAntoni P Tomsia
Jan 18, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Florian BouvilleSylvain Deville
May 23, 2015·ACS Applied Materials & Interfaces·Chao YuanXiaobing Luo
Dec 15, 2015·Journal of the Mechanical Behavior of Biomedical Materials·M Mirkhalaf, F Barthelat
Jun 3, 2016·ACS Applied Materials & Interfaces·Yimin YaoChing-Ping Wong

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Citations

Mar 2, 2021·The Journal of Physical Chemistry. B·Shizhao LuArthi Jayaraman
Aug 27, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jun ZhouKai Wu
Mar 21, 2020·ACS Applied Materials & Interfaces·Xuelong ChenXiao Hu
Dec 21, 2019·ACS Applied Materials & Interfaces·Yimin YaoChing-Ping Wong
Apr 30, 2020·ACS Applied Materials & Interfaces·Chao JiChingping Wong

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