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Synergistic enhancement of thermal conductivity and electromagnetic interference shielding in Ag foam and short carbon fiber-reinforced phase change composites

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2025, 35(4), pp.1769~1776
  • DOI : 10.1007/s42823-025-00908-4
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : December 29, 2024
  • Accepted : March 31, 2025
  • Published : December 11, 2025

Liu Houbao 1 Liu Zhengduo 1 Cheng Zhenbang 1 Wang Wei 1

1West Anhui University

Accredited

ABSTRACT

Phase change materials (PCM) with enhanced thermal conductivity and electromagnetic interference (EMI) shielding properties are vital for applications in electronic devices, energy storage, and aerospace. However, achieving a synergistic improvement in both thermal and EMI shielding performance remains a significant challenge. This study presents the development of phase change composites reinforced with 3D Ag foam and short carbon fibers (SCF) to address this challenge. Ag@SCF/PCM composites were fabricated using a vacuum-assisted impregnation and curing process. Polyethylene glycol and epoxy resin formed the PCM matrix, while SCF and Ag foam created a dual-scale interpenetrating network to provide channels for phonon and electron transmission. The dual-scale network significantly improves thermal conductivity (2.24 W/m·K) and EMI shielding (69.7 dB), while maintaining latent heat storage (melting: 71.5 J/g, freezing: 68.7 J/g). These multifunctional properties make Ag@SCF/PCM composites promising candidates for applications requiring simultaneous thermal management and electromagnetic performance optimization.

Citation status

* References for papers published after 2024 are currently being built.