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Preparation and Performance of Epoxy Resin Coating with Benzotriazole Inhibitor Charged Nano-halloysite Tubes |
ZHANG Zhengyang1, GUO Zixin2, ZHOU Xin1(), SUN Haijing1, SUN Jie1 |
1.School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China 2.School of Environmental and Chemical Engineering Liaoning Institute of Science and Technology, Benxi 117002, China |
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Abstract Halloysite nanotubes were modified by microwave heating, and then charged with metal corrosion inhibitor benzotriazole, while dispersed via ultrasonic vibration in a solution containing tetraethyl orthosilicate and silane coupling agent. Finally, the self-healing coating made of epoxy resin and the prepared halloysite nanotubes was applied on brass plate. The charging capacity of inhibitor into halloysite nanotubes is measured by differential thermal analysis, and the corrosion performance of the coating is assessed by electrochemical impedance method. SEM observation revealed that the surface morphology of nano halloysite nanotubes after microwave heating presented as a broken tubular structure like aggregates. The charging amount of corrosion inhibitor varied with the charging time during ultrasonic vibration. The charging efficiency of corrosion inhibitor benzotriazole for halloysite nanotubes may reach the best by ultrasonic vibration for 8 h. The electrochemical impedance increases with time for the coating/brass plate, which implies that the epoxy coating coupled with halloysite nanotubes charged with benzotriazole inhibitor has a good protective effectiveness for metal materials.
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Received: 05 June 2021
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Fund: General Scientific Research Project of Liaoning Province of Education in 2019(L2019lkyjc-01);High-level Talent Introduction Fund Project of Shenyang University of Technology in 2020(1010147000903) |
Corresponding Authors:
ZHOU Xin
E-mail: zhouxin@alum.imr.ac.cn
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About author: ZHOU Xin, E-mail: zhouxin@alum.imr.ac.cn
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