Reinforcing brittle and ductile epoxy matrices using carbon nanotubes masterbatch |
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| Affiliation: | 1. Department of Civil Engineering, Monash University, Melbourne, VIC 3800, Australia;2. Department of Materials Engineering, Monash University, Melbourne, VIC 3800, Australia;1. Faculty of Applied Chemistry and Materials Science, Department of Organic Chemistry “Costin Nenitescu”, 011061, University POLITEHNICA of Bucharest, Romania;2. Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, 011061, University POLITEHNICA of Bucharest, Romania;3. Center of Organic Chemistry “Costin D. Nenitescu”, Romanian Academy, 060023, Bucharest, Romania;1. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;1. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China;2. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | In this study, the mechanical and thermal properties of epoxy composites using two different forms of carbon nanotubes (powder and masterbatch) were investigated. Composites were prepared by loading the surface-modified CNT powder and/or CNT masterbatch into either ductile or brittle epoxy matrices. The results show that 3 wt.% CNT masterbatch enhances Young’s modulus by 20%, tensile strength by 30%, flexural strength by 15%, and 21.1 °C increment in the glass transition temperature (by 34%) of ductile epoxy matrix. From scanning electron microscopy images, it was observed that the CNT masterbatch was uniformly distributed indicating the pre-dispersed CNTs in the masterbatch allow an easier path for preparation of CNT-epoxy composites with reduced agglomeration of CNTs. These results demonstrate a good CNT dispersion and ductility of epoxy matrix play a key role to achieve high performance CNT-epoxy composites. |
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| Keywords: | A Theromosetting resin B Mechanical properties B Thermal properties D Mechanical testing |
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