Electrochemical and mechanical investigation into the effects of polyacrylamide/TiO2 in polyurethane coatings on mild steel structures in chloride media
Source abstract
Abstract
The influence of embedding PAM/TiO2 nanoparticles within neat polyurethane (PU) coated for the first time on mild steel was evaluated for its mechanical and electrochemical properties in 3.5 wt % NaCl aqueous solution. The coating resistance of the PU-PAM/TiO2 coated steel was found to be 4617.70 kΩ.cm2, whereas the coating resistance of PU was 1.86 kΩ.cm2 after 15 days of exposure to the electrolyte. The coating resistance of the PU-PAM/TiO2 nanocomposite coating outperformed the PU coating by over 53%. The purpose of the surface morphology research was to investigate the nature of the corrosion products that served to preserve the surface against corrosion. The results showed that the newly developed PU-PAM/TiO2 nanocomposite coating possessed superior corrosion protection and enhanced hydrophobic behaviors (WCA: 126º). The investigated coatings showed profound mechanical properties. The synergistic effect of PU and PAM/TiO2 resulted in excellent mild steel anti-corrosion performance in 3.5% NaCl solution. The anticorrosion mechanism of the PU-PAM/TiO2 coating was also proposed. Therefore, the compatibility of PU, PAM and TiO2 nanoparticles was established by superior hydrophobicity and improved corrosion protection and enhanced mechanical properties. As a result, the PU-PAM/TiO2 nanocomposite coating has a wide range of industrial and commercial uses, particularly in the pipeline industry.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Polymer composites and self-healing · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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