RTA-Treated Carbon Fiber/Copper Core/Shell Hybrid for Thermally Conductive Composites
- RTA-Treated Carbon Fiber/Copper Core/Shell Hybrid for Thermally Conductive Composites
- 유승건; 박보인; 박철민; 홍순만; 한태희; 구종민
- thermal conductivity; composite; core/shell; rapid thermal annealing (RTA); carbon fiber; electroplating
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 6, NO 10, 7498-7503
- 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.
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