Kim, Hyun Su Na, Jung Hyun Jung, Yong Chae Kim, Seong Yun 2024-01-20T03:03:44Z 2024-01-20T03:03:44Z 2021-09-04 2016-10-15 0022-3093 https://pubs.kist.re.kr/handle/201004/123561 The size of expanded graphite (EG) was controlled using a high-speed crusher because a hybrid of differently sized fillers can induce a synergistic enhancement of the thermal conductivity in polymer composites. We found that the thermal conductivity of a polymer composite filled with both 10 wt% EG and 10 wt% high-speed crusher treated EG (wEG) was synergistically improved by 12.0 and 20.7% compared to that of polymer composites filled with 20 wt% EG and 20 wt% wEG alone, respectively. A three-dimensional (3D) non-destructive analysis using X-ray micro-computed tomography (micro-CT) was applied to explain the synergistic enhancement and to identify the dispersion and 3D network of EG fillers in the composites accurately. According to the non-destructive analysis results, the synergistic enhancement was caused by the formation of efficient thermally conductive pathways due to the hybrid of the differently sized EG and wEG fillers. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV WALLED CARBON NANOTUBES GRAPHENE NANOPLATELETS THERMOPLASTIC COMPOSITES ELECTRICAL PERCOLATION THEORETICAL APPROACH HEAT-FLOW NANOCOMPOSITES DISPERSION IMPROVEMENT BEHAVIOR Synergistic enhancement of thermal conductivity in polymer composites filled with self-hybrid expanded graphite fillers Article 10.1016/j.jnoncrysol.2016.07.038 1 JOURNAL OF NON-CRYSTALLINE SOLIDS, v.450, pp.75 - 81 JOURNAL OF NON-CRYSTALLINE SOLIDS 450 75 81 scie scopus 000384859900012 2-s2.0-84980340132 Materials Science, Ceramics Materials Science, Multidisciplinary Materials Science Article WALLED CARBON NANOTUBES GRAPHENE NANOPLATELETS THERMOPLASTIC COMPOSITES ELECTRICAL PERCOLATION THEORETICAL APPROACH HEAT-FLOW NANOCOMPOSITES DISPERSION IMPROVEMENT BEHAVIOR Polymer composite Thermal conductivity X-ray micro computed tomography Expanded graphite