Abstract
Graphene oxide (GO)/nitrile rubber (NBR) nanocomposites with various contents of GO were prepared by a solution-mixing method,in this study. The GO sheets were exfoliated from natural fake graphite by an improved Hummers method and could be further dispersed homogeneously in NBR matrix. The thickness and size of the GO sheets were observed by atomic force microscopy and transmission electron microscopy. The tribological properties of the GO/NBR nanocomposites were evaluated on a ring-block MRH-3 wear tester under dry sliding and water-lubricated conditions. The worn surface morphologies of the GO/NBR nanocomposites were observed by a scanning electron microscopy. It was found that under dry sliding, both the friction coefficient (COF) and specific wear rate of the nanocomposites decreased dramatically at first, then increased with increasing GO contents, while under water-lubricated condition, both the COF and specific wear rate of the nanocomposites decreased with increasing GO contents. Finally, the friction and wear mechanisms of the GO/NBR nanocomposites were tentatively proposed.
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Acknowledgements
The authors would like to acknowledge the financial supports from the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51025517), the Innovative Group Foundation of NSFC (Grant No. 50721062), and the 973 Project of China (2007CB607606), the National Defense Basic Scientific Research Project (A1320110011).
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Li, Y., Wang, Q., Wang, T. et al. Preparation and tribological properties of graphene oxide/nitrile rubber nanocomposites. J Mater Sci 47, 730–738 (2012). https://doi.org/10.1007/s10853-011-5846-4
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DOI: https://doi.org/10.1007/s10853-011-5846-4