High performance polyurethane/functionalized graphene nanocomposites with improved mechanical and thermal properties

作者：Cai Dongyu; Jin Jie; Yusoh Kamal; Rafiq Rehman; Song Mo^*

来源：Composites Science and Technology, 2012, 72(6): 702-707.

DOI：10.1016/j.compscitech.2012.01.020

• Polymer-matrix composites (PMCs)
• Nano composites
• Mechanical properties
• Thermal properties

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%26apos;s modulus of the PU was improved by similar to 7 times with the incorporation of 4 wt% GO, and the improvement of similar to 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 similar to 50 degrees C with the addition of 4 wt% GO.

• 出版日期2012-3-27