Dielectric,mechanical and electro-stimulus response properties studies of polyurethane dielectric elastomer modified by carbon nanotube-graphene nanosheet hybrid fillers |
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| Institution: | 1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;2. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China;3. Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan;1. College of Textiles and Clothing, Qingdao University, Qingdao 266071, China;2. Eco-Textile Collaborative Innovation Center, Qingdao University, Qingdao 266071, China;3. Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China;4. Applied Electrochemistry Group, Technological University Dublin, City Campus, FOCAS, Kevin St, Dublin D08 NF82, Ireland;5. Centre for Medical Image Computing, University College London, London WC1V 6LJ, UK;1. School of Chemistry and Biological Engineering, University of Science & Technology Beijing, Beijing 100083, China;2. State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China;2. School of Materials Science and Engineering, Southwest Jiaotong University, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, Chengdu, 610031, PR China;3. Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China |
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| Abstract: | The typical nano-carbon materials, 1D fiber-like carbon nanotubes (CNTs) and 2D platelet-like graphene nanosheets (GRNs), that have attracted tremendous attention in the field of polymer nanocomposites due to their unprecedented properties, are used as conducting filler to induce a considerable improvement in the mechanical, thermal and electrical properties of the resulting graphene/polymer nanocomposites at very low loading contents. This study deals with the preparation and electro-stimulus response properties of polyurethane (PU) dielectric elastomer films with such 1D and 2D nanocarbon fillers embedded in the polymer matrix. The various forms of carbon used in composite preparation include CNT, GRN and CNT-GRN hybrid fillers. Results indicate that the dielectric, mechanical and electromechanical properties depend on the carbon filler type and the carbon filler weight fraction. Here, it has been also established that embedding CNT-GRN hybrid fillers into pristine polyurethane endows somewhat better dispersion of CNTs and GRNs as well as better interfacial adhesion between the carbon fillers and matrix, which results in an improvement in electric-induced strain. Therefore, the nanocomposites seem to be very attractive for microelectromechanical systems applications. |
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| Keywords: | Graphene Carbon nanotube Polyurethane Electro-stimulus response Artificial muscle |
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