Carbon and glass hierarchical fibers: Influence of carbon nanotubes on tensile,flexural and impact properties of short fiber reinforced composites |
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| Affiliation: | 1. Advanced Materials and Nanotechnology Lab, Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia;2. Department of Chemical and Environmental Engineering, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia;1. Faculty of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran;2. Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 33535111, Tehran, Iran;1. Department of Aeronautics and Astronautics, MIT 77 Mass. Ave., Bldg. 35-220, USA;2. Department of Materials & Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel;3. Department of Aeronautics and Astronautics, MIT 77 Mass. Ave., Bldg. 33-408, USA;1. Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China;2. Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, Dresden 01069, Germany;1. U.S. Army Engineer Research and Development Center – Construction Engineering Research Laboratory (ERDC-CERL), Champaign, IL 61821, USA;2. Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, University, MS 38677, USA;1. Chemical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran;2. Chemical Engineering Department, Quchan Institute of Engineering and Technology, Quchan, Iran |
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| Abstract: | Dense carbon nanotubes (CNTs) were grown uniformly on the surface of carbon fibers and glass fibers to create hierarchical fibers by use of floating catalyst chemical vapor deposition. Morphologies of the CNTs were investigated using scanning electronic microscope (SEM) and transmission electron microscope (TEM). Larger diameter dimension and distinct growing mechanism of nanotubes on glass fiber were revealed. Short carbon and glass fiber reinforced polypropylene composites were fabricated using the hierarchical fibers and compared with composites made using neat fibers. Tensile, flexural and impact properties of the composites were measured, which showed evident enhancement in all mechanical properties compared to neat short fiber composites. SEM micrographs of composite fracture surface demonstrated improved adhesion between CNT-coated fiber and the matrix. The enhanced mechanical properties of short fiber composites was attributed to the synergistic effects of CNTs in improving fiber–matrix interfacial properties as well as the CNTs acting as supplemental reinforcement in short fiber-composites. |
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