Electrophoretic deposition of aramid nanofibers on carbon fibers for highly enhanced interfacial adhesion at low content |
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| Affiliation: | 1. Center for Carbon Resources Conversion, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea;2. Department of Energy Engineering and Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea;3. Composites Research Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Changwon, Gyungnam 51508, South Korea;4. University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea;5. School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea;1. Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, United States;2. Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, United States;1. School of Materials Science and Engineering, Shandong University, Jinan, People''s Republic of China;2. School of Materials Science and Engineering, Shandong University of Science and Technology, 266590 Qingdao, People''s Republic of China |
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| Abstract: | Here, an anodic electrophoretic deposition was adopted to facilitate the large-scale uniform coating of nano-fillers onto carbon fibers to enhance the interfacial properties between carbon fibers and epoxy matrix. As interface–reinforcing materials, aramid nanofibers were introduced because of their superior mechanical properties and epoxy matrix-friendly functional groups. Furthermore, aramid nanofibers can be readily coated on carbon fibers via electrophoretic deposition because they are negatively-charged in solution with high electrical mobility. Finally, aramid nanofiber-coated carbon fibers showed significantly improved interfacial properties such as higher surface free energy and interfacial shear strengths (39.7% and 34.9% increases, respectively) than those of a pristine carbon fiber despite a very small amount of embedding (0.025 wt% of aramid nanofibers in a carbon fiber), and the short beam strength of the laminated composite prepared with the aramid nanofiber-coated carbon fibers was also improved by 17.0% compared to a non-modified composite. |
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| Keywords: | A. Aramid fibers B. Fiber/matrix bond B. Interface/interphase Electrophoretic deposition |
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