Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 102, Issue -, Pages 218-227Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.08.012
Keywords
Polystyrene-wrapped boron nitride/commercial polystyrene (BN@PS/CPS) composites; BN@PS filler; Modelling; Thermal properties
Funding
- Natural Science Foundation of Liaoning Province [201602347, GY2016-B-003]
- Liaoning Provincial Department of Education Innovation Team Projects [LT2015012]
- Shenyang Science and Technology Plan [F17-231-1-05]
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Polystyrene-wrapped boron nitride/commercial polystyrene (BN@PS/CPS) composites with high thermal conductivity were fabricated by a novel approach. The route included two steps, BN@PS core-shell structured fillers were prepared by using modified BN and styrene (St) as the raw materials via suspension polymerization, and then the BN@PS were kneaded with the CPS by mechanically mixed method. The composite achieves a high thermal conductivity of 0.692 W/mK containing 30 wt% BN@PS (-15.9 wt% BN), which is 3.72 times higher than that of pure CPS of 0.186 W/mK and 1.78 times higher than that BN/CPS blend composite with at the same BN loading of 0.332 W/mK. Compared with traditional routes, the novel preparation process requires less BN fillers when improving the same thermal conductivity. Importantly, other polymers can also encapsulate BN through this strategy, which paves a new way for preparing thermally conductive polymer-matrix composites. (C) 2017 Elsevier Ltd. All rights reserved.
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