Mechanical and electrical properties of carbon fiber composites with incorporation of graphene nanoplatelets at the fiber–matrix interphase |
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| Affiliation: | 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;2. Composite Materials and Structures Center, Michigan State University, East Lansing, MI 48824, USA;3. Chemical Engineering and Materials Science Department, Michigan State University, East Lansing, MI 48824, USA;1. Composite Vehicle Research Center, College of Engineering, Michigan State University, 2727 Alliance Drive, Lansing, MI 48910, USA;2. Composite Materials and Structures Center, College of Engineering, Michigan State University, 2100 Engineering Building, East Lansing, MI 48824-1226, USA;3. Department of Civil and Environmental Engineering, Michigan State University, 3546 Engineering Building, East Lansing, MI 48824-1226, USA;1. Department of Aeronautics and Astronautics, University of Tokyo, Bunkyo-ku, Tokyo, Japan;2. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China;3. Department of Materials Science and Technology, Tokyo University of Science, Tokyo, Japan;1. Department of Engineering Science and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA;2. Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA |
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| Abstract: | In this study, carbon fibers (CFs) were coated with graphene nanoplatelets (GnP), using a robust and continuous coating process. CFs were directly immersed in a stable GnP suspension and the coating conditions were optimized in order to obtain a high density of homogeneously and well-dispersed GnP. GnP coated CFs/epoxy composites were manufactured by a prepreg and lay-up method, and the mechanical properties and electrical conductivity of the composites were assessed. The GnP coated CFs/epoxy composites showed 52%, 7%, and 19% of increase in comparison with non-coated CFs/epoxy composites, for 90° flexural strength, 0° flexural strength and interlaminar shear strength, respectively. Meanwhile, incorporating GnP in the CF/epoxy interphase significantly improved the electrical conductivity through the thickness direction by creating a conductive path between the fibers. |
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| Keywords: | A Carbon fiber A Nano-structures B Mechanical properties E Autoclave |
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