RTA-treated carbon fiber/copper core/shell hybrid for thermally conductive composites

Seunggun Yu, Bo In Park, Cheolmin Park, Soon Man Hong, Tae Hee Han, Chong Min Koo

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

In this paper, we demonstrate a facile route to produce epoxy/carbon fiber composites providing continuous heat conduction pathway of Cu with a high degree of crystal perfection via electroplating, followed by rapid thermal annealing (RTA) treatment and compression molding. Copper shells on carbon fibers were coated through electroplating method and post-treated via RTA technique to reduce the degree of imperfection in the Cu crystal. The epoxy/Cu-plated carbon fiber composites with Cu shell of 12.0 vol % prepared via simple compression molding, revealed 18 times larger thermal conductivity (47.2 W m-1 K-1) in parallel direction and 6 times larger thermal conductivity (3.9 W m-1 K-1) in perpendicular direction than epoxy/carbon fiber composite. Our novel composites with RTA-treated carbon fiber/Cu core/shell hybrid showed heat conduction behavior of an excellent polymeric composite thermal conductor with continuous heat conduction pathway, comparable to theoretical values obtained from Hatta and Taya model.

Original languageEnglish
Pages (from-to)7498-7503
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number10
DOIs
Publication statusPublished - 2014 May 28
Externally publishedYes

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Keywords

  • carbon fiber
  • composite
  • core/shell
  • electroplating
  • rapid thermal annealing (RTA)
  • thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)

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