Enhanced thermal conductivity of commercial polystyrene filled with core-shell structured BN@PS. (November 2017)

• Record Type: Journal Article
• Authors: Han, Weifang; Bai, Yufeng; Liu, Shicai; Ge, Chunhua; Wang, Lixia; Ma, Zhiyan; Yang, Yuxuan; Zhang, Xiangdong
• Is Part Of: Composites. Volume 102(2017)
• Page Start: 218
• Page End: 227
• Publication Date: 2017-11
• Subjects: A. Polystyrene-wrapped boron nitride/commercial polystyrene (BN@PS/CPS) composites -- B. BN@PS filler -- C. Modelling -- D. Thermal properties; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2017.08.012
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: 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.