| METALS AND METAL MATRIX COMPOSITES |
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| Research on Preparation of Superhydrophobic Composite Coating Based on MOFs Material and Its Anti-corrosion on Carbon Steel |
| WEI Wenchang, LIU Zheng, WEI Runzhi, DIAO Na, LYU YijuGuangxi
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| Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, School of Chemical and Bioengineering, Guilin University of Technology, Guilin 541004, China |
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Abstract The synthesized complexes Cu-MOF and Zn-MOF were hydrophobically modified by 1H,1H,2H,2H-Perfluorooctyltriethoxysilane (POTS) to prepare Cu-MOF/POTS and Zn-MOF/POTS materials, their structure were characterized and confirmed by Fourier infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy spectroscopy (EDS), and their hydrophobic properties are tested. The hydrophobic performance test results showed that the Cu-MOF and Zn-MOF modified by POTS have changed from the original hydrophilicity to the hydrophobicity. In addition, Cu-MOF/POTS, Zn-MOF/POTS are added as anticorrosion additives to epoxy resin to prepare Cu-MOF/POTS/EP, Zn-MOF/POTS/EP composite coatings, which exhibited t super hydrophobic effect, the water contact angle reached 154.8° and 153.1°, respectively. The coating durability and water resistance test showed that those composite coatings have good durability and water resistance. The prepared coatings were immersed in 3.5wt% NaCl corrosion solution for electrochemical test, and the results all showed that the Cu-MOF/POTS/EP, Zn-MOF/POTS/EP composite coatings have a synergistic barrier and shielding effect on the water separator and the corrosive medium, exhibited good hydrophobic and anti-corrosion performance, and the anti-corrosion efficiency are respectively reached 90.06% and 88.84%, it can effectively protect carbon steel from corrosive media, which was consistent with the results of scanning electron microscopy analysis of the coatings.
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Published: 12 November 2021
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| Fund:Natural Science Foundation of Guangxi Province (2016GXNSFAA380109, 2018GXNSFAA294042). |
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Corresponding Authors:
lisa4.6@163.com;league051@163.com
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About author:: Wenchang Wei is postgraduated of Guilin University of Technology, mainly engaged in the synthesis and application of organic chemistry.
Zheng Liu received the Ph.D. degree in Xiangtan University in 2006, served in College of Chemical and Bioengineering, Guilin University of Technology till now, mainly research and application of new organic synthesis technology. More than 90 journal papers are published, including over 60 SCI or EI papers in recent year.
Yiju Lyu received the Ph.D. degree in Guangxi University in 2014, served in College of Chemical and Bioengineering, Guilin University of Technology till now, mainly research chemical metallurgy and new material preparation technology. |
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2021, Vol. 35 
