COMPOSITE FABRICATION OF EPOXY AND GRAPHENE OXIDE COATING TO ENRICH THE ANTICORROSION AND THERMAL PROPERTIES OF CARBON-STEEL

Ahsan Riaz Khan (), Tianyu Zhao () and Maosheng Zheng
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Ahsan Riaz Khan: Institute for Energy Transmission Technology and Application, School of Chemical Engineering, Northwest University, Xi’an 710069, P. R. China
Tianyu Zhao: Institute for Energy Transmission Technology and Application, School of Chemical Engineering, Northwest University, Xi’an 710069, P. R. China
Maosheng Zheng: Institute for Energy Transmission Technology and Application, School of Chemical Engineering, Northwest University, Xi’an 710069, P. R. China

International Journal of Innovation and Technology Management (IJITM), 2022, vol. 29, issue 06, 1-10

Abstract: Graphene oxide (GO) concentrated slurry dispersion method was used to prepare the GO epoxy thermal insulation and anti-corrosion coating. Corrosion test was carried out in 3.5% NaCl solution at 50∘C, and a thermal testing device tested the thermal insulation performance. The results of the electrochemical corrosion test after 456h show that the low-frequency impedance of the coating with 0.5% GO-modified significantly improved, and the corrosion resistance of the coating is better than that of the coating without GO and 1.0% GO-modification. SEM analysis results show that surface morphology of the coating modified with GO 0.5% and 1.0% after 456 h of corrosion, there were no cracks and corrosion products at the substrate interface. In contrast, coatings without GO modification have apparent corrosion damage. Before corrosion testing, the thermal insulation performance of coating modified by 0.5%, 1.0% GO coating was not significantly different from that of the neat epoxy. The bonding strength is also reduced to 3.9, 2.3, and 1.0 MPa. The experimental results show that the coating with 0.5% GO modified is the best for corrosion resistance and insulation.

Keywords: Corrosion protection; thermal and mechanical resistance; graphene oxide; modified epoxy coating (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X2250072X

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