| Biography | |
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 Prof. Shulin Bai College of Engineering, Peking University, China |
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| Title: High Thermally Conductive Polymer Composites Filled With Graphene | |
| Abstract: Due to the astonishing high thermal conductivity (TC) of around 5300 Wm-1K-1, graphene is paid great attention for possible application in heat management of electronic devices. Tremendous investigations have been conducted to increase the TC of polymer composites by adding graphene. However, the agglomeration of graphene sheets limits their loading and has been a bottleneck to effective increase TC of polymer composites. Therefore, the key technique to solve this problem is to invent new methods to get homogeneously dispersed graphene or construct interconnected graphene network in polymer matrix. In this work, based on our recent study and results, we summarize the current development on high TC polymer composites filled with graphene. From graphene foam, graphene interconnected network, well dispersed graphene to continuous graphite film, our study covers diverse methods to make graphene filled thermoplastic and elastomer composites and shows great enhancement of TC. For example, the graphene filled polyamide 6 (PA6) has a TC of 6.1 Wm-1K-1, which is about 30 times that of pure PA6. The flexible graphene foam (GF) and hollow Fe3O4 (h-Fe3O4) filled polydimethylsiloxane (PDMS) composites for which h-Fe3O4 spheres are in-situ grown onto the surface of three dimensional (3D) interconnected GF. The composites are found to have high in-plane TC of 28.12 Wm-1K-1, through-plane TC of 2.0 Wm-1K-1, electrical conductivity (EC) of 84 S/cm and electromagnetic interference (EMI) shielding effectiveness (SE) of 70.37 dB. The excellent performance of composites can be attributed to high degree interconnected networks and uniform dispersion of graphene sheets inside the composites. The results obtained in this work provide effective and facile routes for developing high TC polymer composites, as well as open new possibility to engineering application of such composites. Keywords: graphene, polymer, composite, processing, thermal properties
Acknowledgments:The work is supported by NSFC (Grant No.11672002) and NSAF (Grant No.U1730103) | |
| Biography: Professor Shu-Lin Bai obtained his PhD degree from Lab. de la Mécanique des Sols, Structures et Matériaux, Ecole Centrale de Arts et Manufactures de Paris, France in1993. He obtained his MS degree from Dept. of Engineering Mechanics in 1986 and BS degree in 1983 from Dept. of Materials Engineering of Dalian University of Technology, China. He joined Department of Mechanics and Engineering Science in 1996 and moved to Department of Materials Science and Engineering in 2006 of Peking University. Professor Bai’s expertise is in the area of polymer matrix composites filled with particles (graphene, CNTs, BN, SiO2, etc.) and fibers (carbon fiber, glass fiber, etc.), specially on processing and properties including thermal, electrical and mechanical properties. He has published about 120 journal papers and 40 conference papers. His current research focuses on design, manufacture and thermal/electrical/ mechanical properties of nanofillers filled polymer nanocomposite, as well as processing and application of long fiber reinforced thermoplastics (LFT). He is founder, chairman/co-chairman of Asia-Europe Symposium on Processing and Properties of Reinforced Polymers. | |
