Abstract
The development of a phenol formaldehyde/graphene (PF-graphene) composite coating with high performance is desirable but remains a challenge, because of the ultrahigh surface area and surface inertia of the graphene. Herein, we synthesized PF-graphene composites by the in situ polymerization of phenol and formaldehyde with the addition of graphene oxide, resulting in improved compatibility between the graphene and phenolic resin (PF) matrix and endowing the phenolic resin with good thermal stability and excellent tribological properties. Fourier-transform infrared (FTIR) spectra and X-ray diffraction (XRD) patterns demonstrated that the graphene oxide was reduced during the in-situ polymerization. The PF-graphene composites were sprayed onto steel blocks to form composite coatings. The effects of an applied load and of the sliding speed on the tribological properties of the PF-graphene composite coating were evaluated using a block-on-ring wear tester; in addition, the worn surface and the transfer film formed on the surface of the counterpart ring were studied by scanning electron microscopy (SEM). The results show that the PF-graphene composite coating exhibited enhanced tribological properties under all tested conditions.
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Mingming YANG. He is currently a PhD student at Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. He received his Bachelor degree in Chemistry from Longdong University in 2012. He joined prof. Zhaozhu Zhang’s group at Lanzhou Institute of Chemical Physics in 2012. His current research interests are focused on improving the tribological properties of the polymer composite coating, fabric reinforced composite and studying the corresponding mechanism.
Xuehu MEN. He is currently an associate professor at Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. He received his BS degree from Lanzhou University in 2001 and a PhD degree from Lanzhou Institute of Chemical Physics in 2009. His current research interests include the development of polymer composite materials and carbon based materials for lubrication and designing materials with special surface wettability. He is the author of more than 60 journal papers and several patent applications.
Zhaozhu ZHANG. He is currently a group leader at Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. He received his PhD degree from Lanzhou Institute of Chemical Physics in 1998. His current research interests cover the tribology of composite materials, designing functional surfaces with special wetting behavior, and engineering coatings for drag-reduction. He has published over 150 journal papers and gained a number of national scientific awards.
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Yang, M., Zhang, Z., Zhu, X. et al. In situ reduction and functionalization of graphene oxide to improve the tribological behavior of a phenol formaldehyde composite coating. Friction 3, 72–81 (2015). https://doi.org/10.1007/s40544-015-0076-4
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DOI: https://doi.org/10.1007/s40544-015-0076-4