High performance polyurethane/functionalized graphene nanocomposites with improved mechanical and thermal properties |
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Authors: | Dongyu Cai Jie Jin Kamal YusohRehman Rafiq Mo Song |
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Affiliation: | Department of Materials, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK |
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Abstract: | This communication reported the substantial improvement in the mechanical and thermal properties of a polyurethane (PU) resulting from the incorporation of well-dispersed graphene oxide (GO). The stress transfer benefited from the covalent interface formed between the PU and GO. The Young’s modulus of the PU was improved by ∼7 times with the incorporation of 4 wt% GO, and the improvement of ∼50% in toughness was achieved at 1 wt% loading of GO without losing elasticity. Significant improvements were also demonstrated in the hardness and scratch resistance measured by nano-indentation. Thermogravimetric analysis revealed that the decomposition temperature was increased by ∼50 °C with the addition of 4 wt% GO. |
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Keywords: | A Polymer&ndash matrix composites (PMCs) A Nano composites B Mechanical properties B Thermal properties |
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