Influence of Fiber Surface Treatment on Mechanical Properties of CF/PET Composites |
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Authors: | Pinpin Shi Wei Wu Yu Chen Mingchang Liu Yong Liu Xiang Wu |
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Institution: | Sino-German Research Center of Advanced Materials, School of Materials Science and Technology, East China University of Science and Technology , Shanghai , China |
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Abstract: | Carbon fiber (CF) / poly (ethylene terephthalate) (PET) composites were prepared with various contents (2–15wt%) of short carbon fibers. To investigate the effect of surface treatment of the CF on the mechanical properties of the composites, three specimens were prepared; those with short carbon fibers (called SCF), short carbon fibers oxidized with nitric acid (called NASCF) and the fibers oxidized with nitric acid and treated with silane coupling agent (called SCSCF). Flexural, tensile and impact tests were performed to observe mechanical behavior of the specimens. The morphology of the specimens was also studied with a scanning electron microscope (SEM). SCSCF composite had better mechanical properties than the other composites with the same content of carbon fibers since the coupling agent resulted in better interfacial adhesion between the fiber and the matrix. |
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Keywords: | crystallization mechanical properties polyethylene terephthalate short carbon fibers silane coupling agent |
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