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Improving the Tribological and Anticorrosion Performance of Waterborne Polyurethane Coating by the Synergistic Effect between Modified Graphene Oxide and Polytetrafluoroethylene

by Tao Bai 1,2,*, Lei Lv 1, Weiping Du 3, Wenqi Fang 4 and Yansong Wang 5,*
1
College of Mechanical Engineering, Donghua University, Shanghai 201620, China
2
Engineering Research Center of Advanced Textile Machinery, Ministry of Education, Shanghai 201620, China
3
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
4
Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China
5
Shanghai Weixing Optical Co., Ltd., Shanghai 201404, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 137; https://doi.org/10.3390/nano10010137
Received: 2 December 2019 / Revised: 31 December 2019 / Accepted: 10 January 2020 / Published: 12 January 2020
In this work, the effect of modified graphene oxide and polytetrafluoroethylene (PTFE) on the tribological and anticorrosion properties of waterborne polyurethane (WPU) was studied. The modified graphene oxide (MGO) was obtained by the surface functionalization modification of graphene oxide (GO) with isophorone diisocyanate (IPDI), and MGO/WPU composite coating and MGO-PTFE/WPU composite coating with different mass fractions of MGO were prepared. The tribological and electrochemical experiment results demonstrated that the tribological properties of the coating and the corrosion resistance of the worn coating were effectively enhanced under the synergistic effect of MGO and PTFE. Finally, a mechanism was proposed to explain the improvement in anticorrosion performance of the worn coating. View Full-Text
Keywords: graphene oxide; waterborne polyurethane; tribological performance; corrosion resistance; electrochemical impedance spectroscopy (EIS) graphene oxide; waterborne polyurethane; tribological performance; corrosion resistance; electrochemical impedance spectroscopy (EIS)
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Bai, T.; Lv, L.; Du, W.; Fang, W.; Wang, Y. Improving the Tribological and Anticorrosion Performance of Waterborne Polyurethane Coating by the Synergistic Effect between Modified Graphene Oxide and Polytetrafluoroethylene. Nanomaterials 2020, 10, 137.

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