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RSC Advances

Synthesis of Mn-MOFs loaded zinc phosphate composite for water-based acrylic coatings with durable anticorrosion performance on mild steel†

Zesheng Chen,ab   Kun-huan He,*b   Runzhi Wei,a   Yiju Lv,a   Zheng Liu*a  and  Guo-Cheng Han ORCID logo *c  

* Corresponding authors

a College of Chemical and Biological Engineering, Guilin University of Technology, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin 541004, P. R. China
E-mail: lisa4.6@163.com

b College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, P. R. China
E-mail: hkh821227@163.com

c School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, P. R. China
E-mail: hangc81@guet.edu.cn

Abstract

A new metal–organic framework (MOF) compound [Mn2(2,2′-bca)2(H2O)2]n (Mn-MOFs) was successfully synthesized by solvothermal method, and Mn-MOFs@Zn material was prepared by loading zinc phosphate onto Mn-MOFs by ball milling, then Mn-MOFs@Zn was added to the water-based acrylic paint to prepare Mn-MOFs@Zn@acrylic coating. The AC impedance test results showed Mn-MOFs@Zn@acrylic coating has higher corrosion inhibition performance and stability to mild steel when compared with blank coating. The impedance modulus of the blank coating in the low frequency region decreased by 90%, and the Rct showed a trend of first increasing and then decreasing over time, the maximum Rct was only 303.8 Ω, which was only Mn-MOFs@Zn@acrylic coating one-seventh of the Rct value. The artificial scratch experiment showed that the Mn-MOFs@Zn@acrylic coating only slightly corrodes at the scratches, because Mn-MOFs@Zn material made the coating a self-repairing function and improved the durable anticorrosion performance of the acrylic coating.

Graphical abstract: Synthesis of Mn-MOFs loaded zinc phosphate composite for water-based acrylic coatings with durable anticorrosion performance on mild steel

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Article information

DOI
https://doi.org/10.1039/D0RA09753E
Article type
Paper
Submitted
17 Nov 2020
Accepted
08 Jan 2021
First published
15 Jan 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 3371-3379

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Synthesis of Mn-MOFs loaded zinc phosphate composite for water-based acrylic coatings with durable anticorrosion performance on mild steel

Z. Chen, K. He, R. Wei, Y. Lv, Z. Liu and G. Han, RSC Adv., 2021, 11, 3371 DOI: 10.1039/D0RA09753E

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