Effect of reinforcement of mixed metal oxide nanoparticles in polyurethane resin for barrier and dynamic mechanical properties of steel structures
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 9 June 2022
Issue publication date: 4 August 2022
Abstract
Purpose
This study aims to study the effect of the reinforcement of mixed CeO2-ZrO2 nanoparticles in the polyurethane (PU) for protection properties of steel structures.
Design/methodology/approach
Electrochemical techniques were used to study the anticorrosion properties of the generated PU/CeO2-ZrO2 nanocomposite coated steel. Dynamic mechanical testing was done to investigate the mechanical properties.
Findings
In natural seawater, Electrochemical impedance spectroscopy experiments indicated outstanding protective behaviour for the PU/CeO2-ZrO2-coated steel. The coating resistance of the PU/CeO2-ZrO2 nanocomposite coating was found to be roughly 30% greater than that of the PU coating. Scanning electron microscopy with energy dispersive X-ray spectroscopy and X-ray diffraction analyses of the coated steel surface revealed that the CeO2-ZrO2 was accumulated at the corrosion products, preventing the corrosion. Dynamic mechanical analysis revealed that when the nanoparticle concentration was 3 Wt.%, the PU/CeO2-ZrO2 nanocomposite coating had improved dynamic mechanical parameters.
Originality/value
The coating resistance of the PU/CeO2-ZrO2 nanocomposite was determined to be 2999.17 kΩ.cm2. The perceived current by scanning electrochemical microscopy analysis across the PU/CeO2-ZrO2 coating was 1.7 nA. The PU/CeO2-ZrO2 nanocomposite had a good hydrophobic behaviour (WCA: 101o). The newly synthesised PU/CeO2-ZrO2 composite offered great barrier and mechanical properties, preventing material degradation and increase the lifespan of the coated steel. Hence, this form of coating could be used as a viable coating material for industrial purposes.
Keywords
Citation
Xavier, J.R. (2022), "Effect of reinforcement of mixed metal oxide nanoparticles in polyurethane resin for barrier and dynamic mechanical properties of steel structures", Anti-Corrosion Methods and Materials, Vol. 69 No. 5, pp. 469-480. https://doi.org/10.1108/ACMM-03-2022-2617
Publisher
:Emerald Publishing Limited
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