Long-term moisture effects on the interfacial shear strength between surface treated carbon fiber and epoxy matrix |
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| Affiliation: | 1. School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore;2. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China;1. Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Research Institute for Green Energy Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of Korea;2. Department of Mechanical Engineering, The University of Utah, Salt Lake City, UT 84112, USA;1. Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;2. Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia;3. Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia;4. School of Civil and Environmental Engineering, University of New South Wales, NSW 2052, Australia |
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| Abstract: | In recent years, carbon fiber reinforced polymer (CFRP) composites have found increasing applications in marine and offshore area, where the CFRP components are subjected to a persistent attack of moisture. The performance degradation of composites under those critical service conditions becomes a key issue. In this work, silane coating and multiwalled carbon nanotubes were applied on carbon fibers to enhance the fiber/matrix interfacial bonding strength. The long-term effects of moisture on the interfacial shear strength (IFSS) of the composites in underwater environments, such as de-ionized water and simulated seawater, have been studied using single fiber microbond method. The silane coating and carbon nanotube-modified silane coating are found to contribute 14.5% and 26.3% increase in IFSS of the CFRP in dry air, and well maintain this improvement during a 120-day immersion test in de-ionized water and simulated seawater. |
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| Keywords: | A Carbon fiber A Polymer-matrix composites (PMCs) B Environmental degradation B Interface/interphase |
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