Fabrication and thermally conductive properties of functionalized SiC nanowires/liquid crystal epoxy composites

XIANG Xiaolian; MA Zhonglei; SHI Lin; HAN Lang; SONG Xiaoning; SHAO Liang

doi:10.13801/j.cnki.fhclxb.20211008.003

Volume 39 Issue 8

Aug. 2022

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XIANG Xiaolian, MA Zhonglei, SHI Lin, et al. Fabrication and thermally conductive properties of functionalized SiC nanowires/liquid crystal epoxy composites[J]. Acta Materiae Compositae Sinica, 2022, 39(8): 3747-3756. doi: 10.13801/j.cnki.fhclxb.20211008.003

Citation:

XIANG Xiaolian, MA Zhonglei, SHI Lin, et al. Fabrication and thermally conductive properties of functionalized SiC nanowires/liquid crystal epoxy composites[J]. Acta Materiae Compositae Sinica, 2022, 39(8): 3747-3756. doi: 10.13801/j.cnki.fhclxb.20211008.003

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Fabrication and thermally conductive properties of functionalized SiC nanowires/liquid crystal epoxy composites

doi: 10.13801/j.cnki.fhclxb.20211008.003

1.
Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
2.
Shaanxi Key Laboratory of Polymer Science and Technology, College of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710029, China

Received Date: 2021-07-21
Accepted Date: 2021-09-25
Rev Recd Date: 2021-09-01

Available Online: 2021-10-09

Publish Date: 2022-08-31

Abstract

Abstract

Highly thermally-conductive polymer-based composites have important application value in the field of electronic equipment. Based on the “intrinsic-filled” synergistic effect, the liquid crystal epoxy functionalized SiC nanowires (SiCNWs-LCE)/liquid crystal epoxy composites with low filling amount and high thermal conductivity were prepared by the liquid phase blending method, using the synthesized intrinsic thermally-conductive liquid crystal epoxy as matrix and SiCNWs-LCE as highly thermally-conductive fillers. The chemical structures, crystallization behaviors of the liquid crystal epoxy and microstructures, chemical structures and thermal stability of the functionalized SiCNWs were analyzed. The influences of SiCNWs-LCE content on the thermal conductivity and thermal stability of the SiCNWs-LCE/liquid crystal epoxy composites were investigated in detail. The results show that the SiCNWs functionalized by silane coupling agent and liquid crystal epoxy have good dispersibility. The “intrinsic-filled” synergistic effect endows the SiCNWs-LCE/liquid crystal epoxy composite with excellent thermal conduc-tive properties. The thermal conductivity of SiCNWs-LCE/liquid crystal epoxy composites increases with the SiCNWs-LCE content. Compared with the pure liquid crystal epoxy resin, the SiCNWs-LCE/liquid crystal epoxy composites exhibit an increased thermal conductivity from 0.33 W/(m·K) to 0.72 W/(m·K) with an improvement of 118%.
- thermal conductivity composites,
- liquid crystal epoxy,
- functionalized SiCNWs,
- “intrinsic-filled”,
- synergistic effect,
- high heat resistance
Long Abstrsct
Innovation Points

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References(25)

References

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