Abstract
By encapsulating corrosion inhibitors in pH-responsive nanocontainers, the coating provides strong active protection against the aggressive environment, which is an effective way to develop highly efficient coatings. Here, tannic acid functionalized Ce-MMT nanocomposites were prepared and their effect on the anti-corrosion properties of waterborne polyurethane coating was investigated. Among them, the MMT plays the role of a physical barrier and a container; and Ce3+ as cathodic protectant. TA not only has the effect of anodic protection but also increases the dispersion of the nanocontainer. In a specific experiment, the anti-corrosion property of the composite coating was investigated by electrochemical. The results showed that WPU/TA@Ce-MMT coating had long-term anti-corrosion ability after soaking for 50 days, and the |Z|0.01Hz was two orders of magnitude higher than that of pure WPU. Also, the analysis of scratch coating demonstrated that Ce3+ and TA could serve as self-healing agents to block the corrosion process when the corrosive medium reaches the metal/coating interface through artificial scratches. This novel synergistic anticorrosion system opens a new possibility for manufacturing high-efficiency anticorrosion coatings.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
