Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 149, Issue -, Pages 41-47Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2017.06.008
Keywords
Hybrid composites; Thermal properties; Anisotropy; Scanning electron microscopy; Casting
Categories
Funding
- National Natural Science Foundation of China [51522211, 51372265, 51528203, 51602339]
- Key Research Program of Frontier Science of Chinese Academy of Sciences [QYZDB-SSW-SLH031]
- National Key Research and Development Program of China [2016YFA0203301]
- Thousand Youth Talents Plan
- Postdoctoral Foundation of China [2016M601905]
- Natural Science Foundation of Jiangsu Province, China [BK20160399, BK20140392]
- Transformation of Scientific and Technological Achievements in Jiangsu Province [BA2016026]
- Postdoctoral Foundation of Jiangsu Province [1601065B]
- Science and Technology Project of Suzhou, China [SZS201508, ZXG201428, ZXG201401]
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Polymer infiltrating filler-network has been actively researched recently to obtain composite materials with enhanced thermal conductivities. However, the long infiltration time blocks its wide application. In this study, we prepared hexagonal boron nitride (h-BN)/poly(vinyl alcohol) (PVA) composite by combining polymer infiltration with filler diffusion through the polymer to reduce infiltration time and form heat conduction paths. Base on this process, the maximum thermal conductivities of the obtained h-BN/PVA composites were 1.63 W/m.K and 8.44 W/m.K along the through-plane and in-plane directions, respectively. In addition, the composites displayed excellent heat dissipation performance when attached on top of a light emitting diode (LED) light strip. The research results indicate our approach is facile and capable of fabricating high performance thermal interface materials. (C) 2017 Elsevier Ltd. All rights reserved.
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