Enhanced thermal-conductive and anti-dripping properties of polyamide composites by 3D graphene structures at low filler content |
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| Affiliation: | 1. Research Center of Nanoscience and Nanotechnology, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China;2. College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China;1. Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, 110, Taiwan;2. Department of Green Material Technology, Green Technology Research Institute, CPC Corporation, Kaohsiung 81126, Taiwan;3. Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung 84001, Taiwan;4. Department of Science Education, National Taipei University of Education, Taipei 106, Taiwan;5. Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan;1. Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering Southwest Jiaotong University, Chengdu 610031, China;2. Department of Mechanical Engineering, University of New Orleans, LA 70148, USA;3. Zhonghao Heiyuan Research Institute of Chemical Industry, Zigong 643201, China;1. Nanotechnology and Integrated BioEngineering Centre (NIBEC), University of Ulster, Belfast, NI BT370QB, United Kingdom;2. Fire Safety Engineering Research and Technology (FireSERT), University of Ulster, Belfast, NI BT370QB, United Kingdom |
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| Abstract: | In this work, 3D graphene structures constructed by graphene foam (GF) were introduced into polyamide-6 (PA6) matrix for the purpose of enhancing the thermal-conductive and anti-dripping properties of PA6 composites. The GF were prepared by one-step hydrothermal method. The PA6 composites were synthesized by in-situ thermal polycondensation method to realize PA6 chains covalently grafted onto the graphene sheets. The 3D interconnected graphene structure favored the formation of the consecutive thermal conductive paths or networks even at relatively low graphene loadings. As a result, the thermal conductivity was improved by 300% to 0.847 W·m−1·K−1 of PA6 composites at 2.0 wt% graphene loading from 0.210 W·m−1·K−1 of pure PA6 matrix. The presence of self-supported 3D structure alone with the covalently-grafted PA6 chains endowed the PA6 composites good anti-dripping properties. |
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| Keywords: | Graphene foam Polymeric composite Thermal conductivity Anti-dripping |
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