An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal

Xin Chen; Xue-Zhong Zhang; Yi-Fei Yuan; Chuan-Liang Chen; Lian-Hu Xiong; Qiang Fu; Hua Deng

doi:10.1007/s10118-024-3144-2

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An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal

RESEARCH ARTICLE | Updated：2024-06-26

- An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal
- Chinese Journal of Polymer Science Vol. 42, Issue 7, Pages: 992-1001(2024)
- Affiliations：
  
  a.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.Department of Materials Science and Engineering, Sichuan University-Pittsburgh Institute, Sichuan University, Chengdu 610065, China
- Author bio：
  
  huadeng@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-024-3144-2
  CLC：
- Received：27 February 2024，
  
  Revised：2024-04-08，
  
  Accepted：12 April 2024，
  
  Online First：21 May 2024，
  
  Published：01 July 2024
- Accepted：
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Chen, X.; Zhang, X. Z.; Yuan, Y. F.; Chen, C. L.; Xiong, L. H.; Fu, Q.; Deng, H. An effective approach for the preparation of high performance thermal conductive polymer composites containing liquid metal. Chinese J. Polym. Sci. 2024, 42, 992–1001

Xin Chen, Xue-Zhong Zhang, Yi-Fei Yuan, et al. An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal[J]. Chinese Journal of Polymer Science, 2024, 42(7): 992-1001.
Chen, X.; Zhang, X. Z.; Yuan, Y. F.; Chen, C. L.; Xiong, L. H.; Fu, Q.; Deng, H. An effective approach for the preparation of high performance thermal conductive polymer composites containing liquid metal. Chinese J. Polym. Sci. 2024, 42, 992–1001 DOI： 10.1007/s10118-024-3144-2.

Xin Chen, Xue-Zhong Zhang, Yi-Fei Yuan, et al. An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal[J]. Chinese Journal of Polymer Science, 2024, 42(7): 992-1001. DOI： 10.1007/s10118-024-3144-2.

摘要

High-performance composites containing liquid metals have been prepared by this novel approach

which utilizes the combination of forces to improve the dispersion of liquid metals and their interfaces with polymers.

Abstract

The preparation of high-performance thermal conductive composites containing liquid metals (LM) has attracted significant attention. However

the stable dispersion of LM within polymer solution and effective property contribution of liquid metals remains significant challenges that need to be overcome. Inspired by the properties of the dendritic structure of the tree root system in grasping the soil

“shear-induced precipitation-interfacial reset-reprotonation” processing strategy is proposed to prepare nanocomposites based on aramid micron fibers (AMFs) with hierarchical dendritic structure. Thanks to the combination of van der Waals force provided by hierarchical dendritic structure

electrostatic interaction between AMFs and LM

coordinative bonding of ―NH to LM

together with interfacial re-setting and multi-step protonation

several features can be achieved through such strategy: conducive to the local filler network construction

improvement of interfacial interaction

improvement of the stability of filler dispersion in the solvent

and enhancement of mechanical and thermal properties of the films. The resulting AMFs-pH=4/LM films demonstrate a thermal conductivity of 10.98 W·m

−1

·K

−1

at 70% filler content

improvement of 126.8% compared to ANFs/LM film; while maintaining a strength of ~85.88 MPa

improvement of 77% compared to AMFs/LM film. They also possess insulation properties

enable heat dissipation for high power electronics. This work provides an effective strategy for the preparation of high performance polymer composites containing liquid metal.

关键词

Keywords

references

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