Interfacial Improvement of Carbon Fiber/Epoxy Composites by Incorporating Superior and Versatile Multiscale Gradient Modulus Intermediate Layer with Rigid-flexible Hierarchical Structure |
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Authors: | Feng Pei-Feng Song Guo-Jun Zhang Wen-Jian Zheng Hao Li Bo-Wen Zhou Shao-Feng Liu Ya-Qing Wu Guang-Shun Ma Li-Chun |
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Institution: | 1.Institute of Polymer Materials, School of Material Science and Engineering, Qingdao University, Qingdao, 266071, China ;2.Shanxi Province Key Laboratory of Functional Nanocomposites, North University of China, Taiyuan, 030000, China ;3.School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China ; |
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Abstract: | In order to enhance the interfacial adhesion of carbon fiber(CF) and polymer matrix, a multiscale gradient modulus intermediate layer with rigid-flexible(GO-PA) hierarchical structure was designed and fabricated between CFs and matrix by a facile and businesslike strategy. The polarity, roughness and wettability of CFs surface as well as the thickness of intermediate layer in composite have been significantly increased after rigid-flexible hierarchical structure was constructed. The IFSS, ILSS, compression and impact toughness manifested that the hierarchical structure could bring about a fantastic improvement(76.8%, 46.4%, 40.7% and 37.8%) for the interfacial and mechanical properties than other previous reports. Consequently, the establishment of CF surface with gradient modulus rigid-flexible hierarchical structure via regulation of nanoparticles and polymer array would open a new, viable and promising route to obtaining high-performance composites. |
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Keywords: | Carbon fibers Polymer-matrix composites Interface Hierarchical structure Gradient modulus |
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