Noh, Ye Ji Kim, Seong Yun 2024-01-20T06:32:31Z 2024-01-20T06:32:31Z 2021-09-05 2015-08 0142-9418 https://pubs.kist.re.kr/handle/201004/125187 We found that the thermal conductivity of composite materials was synergistically enhanced by the simultaneous incorporation of well-dispersed pitch-based carbon fibers (PCFs) and graphene nanoplatelets (GNPs) into the matrix. Accordingly, this study investigated the causes of such enhancement and attempted to optimize the thermal conductivity. The solvent-free composites fabrication method based on powder mixing and in-situ polymerization proposed recently was employed to achieve a uniform dispersion of fillers of different sizes and shapes. The isotropic and in-plane thermal conductivity of the composite containing both uniformly dispersed 5 wt% of PCF and 15wt% of GNP achieved improvements of 82% and 183% when compared to those containing 20 wt% of GNP, and improvements of 65% and 74% when compared to those containing 20 wt% of PCF, respectively. The synergistic improvement of the thermal conductivity was maximized at the optimized composition due to the most efficient formation of thermally-conductive pathways and internal structures favorable for phonon transport. (C) 2015 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD THERMOPLASTIC COMPOSITES MECHANICAL-PROPERTIES THEORETICAL APPROACH BORON-NITRIDE DISPERSION FABRICATION MATRIX HEAT Synergistic improvement of thermal conductivity in polymer composites filled with pitch based carbon fiber and graphene nanoplatelets Article 10.1016/j.polymertesting.2015.06.003 1 POLYMER TESTING, v.45, pp.132 - 138 POLYMER TESTING 45 132 138 scie scopus 000359172100018 2-s2.0-84934996818 Materials Science, Characterization & Testing Polymer Science Materials Science Polymer Science Article THERMOPLASTIC COMPOSITES MECHANICAL-PROPERTIES THEORETICAL APPROACH BORON-NITRIDE DISPERSION FABRICATION MATRIX HEAT Polymer composite Thermal conductivity Carbon fiber Graphene nanoplatelet Cyclic butylene terephthalate