Preparation and characterization of the modulus intermediate layer in carbon fiber/epoxy composites by depositing sepiolites |
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| Authors: | Qing Yang Qingjie Zhang Xin Chen Xi Deng Shengli Qi Gang Sui Zhouwen He Fengtao Lan Dezhen Wu Xiaoping Yang |
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| Affiliation: | 1. State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, Beijing, China;2. State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute, Beijing, China;3. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China |
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| Abstract: | An important aspect in development of multi‐scale reinforced composites is their mass production which can be easily realized. In this article, the sepiolites (Si12O30Mg8(OH)4(OH2)4·8H2O) are directly deposited onto the surface of JH‐T800 carbon fibers for the first time with no need for removal of the commercial sizing agent. The sepiolites adhering to the carbon fibers are uniformly distributed with random orientation, and participated in the formation of high modulus intermediate layer encompassing the carbon fiber. After the deposition of sepiolites, the interfacial shear strengths (IFSS) of the carbon fiber/epoxy composites are significantly improved as shown in single‐fiber composite fragmentation tests. Compared to the commercial carbon fiber composites, the sepiolite‐deposited fiber composites also exhibit obvious improvement in the interlaminar shear strength and flexural strength. As a new kind of multi‐scale reinforcement with industrial application value, the sepiolite‐deposited carbon fibers can further raise the level of mechanical properties of the existing carbon fiber reinforced composites. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43955. |
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| Keywords: | composites fibers mechanical properties resins surfaces and interfaces |
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