Mechanical properties improvements in two-phase and three-phase composites using carbon nano-fiber dispersed resin |
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| Affiliation: | 1. Japan Aerospace Exploration Agency, Oosawa 6-13-1, Mitaka-shi, Tokyo 181-0015, Japan;2. GSI Creos Corporation, Minami-Watarida Cyo1-12, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-0085, Japan;1. National Textile University, National Centre for Composite Materials, Faisalabad, Pakistan;2. Normandie University, UNIHAVRE, CNRS, LOMC, Le Havre, France;1. Department of Mechanical Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, ON K1N 6N5, Canada;2. Department of Mechanical and Aerospace Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada;1. Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong 30019, Republic of Korea;2. Institute of Industrial Technology, Korea University, 2511 Sejong-Ro, Sejong 30019, Republic of Korea;1. Technology Laboratory of Polymers and Biopolymers, Federal University of São Paulo, São José dos Campos, SP, 12231-280, Brazil;2. Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA;3. Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, 06269, USA;4. Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China;5. Department of Biomedical Engineering, University of Connecticut, Storrs, CT, 06269, USA;1. Institute of Hydrodynamics, Acad. Sci. Czech Rep., 166 12 Prague 6, Czech Republic;2. Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic |
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| Abstract: | Static strength tests were carried out for cured carbon nano-fiber (CNF) dispersed resin as tow-phase composites and for CFRP laminates using CNF dispersed resin as three-phase composites. To obtain these CFRP laminates, the CNF dispersed resin was impregnated to CF reinforcement and cured by hot press. The CNF used was a cup-stacked type of nano-fiber, CARBERE®, made by GSI CREOS Corporation, Japan. Two CNF aspect ratios of 10 and 50 were employed. These fiber lengths of the CNF were controlled about 1000 nm (AR10) and 5000 nm (AR50), respectively. The CNF was dispersed to EPIKOTE 827® epoxy resin in two values of CNF weight ratios, 5 and 10% to the resin. TORAYCA® C6343 plain woven fabric was used for reinforcement of the CFRP laminates. The cure condition with the agent of aromatic amine EPIKURE W® was 100 °C for two hours followed by a post cure of 175 °C for 4 h. The static strength tests led to the conclusion that the dispersion of CNF into epoxy improves mechanical properties of the tow-phase composites, and that CFRP laminates with CNF dispersed resin also exhibit higher compressive strength than CFRP laminates without CNF as control. Possibilities of improvement in mechanical properties were confirmed in the two and three-phase composites. Moreover, a proportional tendency in strength improvements to CNF weight content was found in the two present composites so far in the present test results. |
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