Journal
RSC ADVANCES
Volume 9, Issue 62, Pages 36316-36323Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra07168g
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Funding
- Project of the Innovative Research Team of New Functional Materials of Beijing Technology and Business University
- Beijing Chemical Industry Research institute Co. Ltd.
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Most of the highly thermally conductive polymer-based composites currently face problems that must be solved before they can be directly used in industrial production. Herein, a practical polybutylene terephthalate (PBT)/polycarbonate (PC)/graphite nanoplatelet (GNP) thermally conductive composite with relative low filler content was prepared by a conventional melt-blending technique. GNPs selectively distributed and oriented in the PBT phase afford the composite a low percolation threshold and anisotropic thermal conductivity. Investigation of the influence of filler content on the final comprehensive performance showed that a prepared PBT/PC/GNP composite with 20 vol% GNPs exhibited superior performance in thermal conductivity, heat resistance, and mechanical properties. The in-plane and through-plane thermal conductivities of the composite were 5.82 W m(-1) K-1 and 1.06 W m(-1) K-1, respectively, which were increased by 2430% and 361% as compared to that of a neat PBT/PC blend. The Vicat softening temperature increased by 17.7 degrees C and reached 213.7 degrees C, while the mechanical properties also maintained a good application level.
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