AI Article Synopsis
- Steel structures in subtropical marine climates are prone to severe corrosion due to harsh environmental conditions like strong sunlight and heavy rain.
- A new waterborne coating, developed using modified nanoscale titania powders and grafted polymers, shows exceptional properties such as corrosion resistance, hydrophobicity, and high-temperature tolerance.
- The research revealed that the best modification was achieved with methacryloxy silane, leading to a coating with a contact angle of 115.4° and a service life of up to five years, potentially cutting costs by over 50% compared to traditional coatings.
Article Abstract
Steel structures located in subtropical marine climates face harsh conditions such as strong sunlight and heavy rain, and they are extremely corroded. In this study, a waterborne coating with excellent corrosion resistance, hydrophobic ability, high-temperature resistance and high density was successfully prepared by using modified nanoscale titania powders and grafted polymers. The effects of three modifiers on titania nanoparticles and waterborne coatings' properties were studied independently. The experimental results showed that the activation index of the modification employing methacryloxy silane reached 97.5%, which achieved the best modification effect at 64.4 °C for 43.3 min. The waterborne coating with nanoscale titania modified by methacryloxy silane exhibited the best hydrophobic effect, with a drop contact angle of 115.4° and excellent heat resistance of up to 317.2 °C. The application of the waterborne modified coating in steel structures under subtropical maritime climates showed that the waterborne titania coatings demonstrated excellent resistance to corrosion, high temperatures and harsh sunlight, with a maximum service life of up to five years. Economic analysis indicated that, considering a conservative three-year effective lifespan, this coating could save more than 50% in cost compared with conventional industrial coatings. Finally, the strengthening mechanism of the polymer coatings with modified nanoscale titania was analyzed.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11243861 | PMC |
| http://dx.doi.org/10.3390/polym16131919 | DOI Listing |
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