A recent study presents a self-diagnosing and active protective dual-functional water-borne polyurethane coating based on smart mesoporous containers.
During a new work, a dual functional coating was constructed to possess self-diagnosing and active anti-corrosion protection using pH-sensitive mesoporous silica containers containing gallic acid (GA). The containers are capable of releasing the inner GA when corrosion occurs at the metal substrate/coating interface due to pH sensitivity. LORA Meter Module
GA can react with the Fe3+ ions to form conspicuous purple colour at damaged sites, which provides the coating with a fast and timely corrosion self-diagnosing function. It can also inhibit the expansion of corrosion and realise active corrosion protection. As rthe researchers point ot, their work provides a new idea for the multifunctional design of smart coatings with a single substance that provides both self-diagnosing and active corrosion protection.
The study has been published in Progress in Organic Coatings, Volume 183, October 2023.
The EC Tech Report Waterborne Protective Coatings gives you an extensive up-to-date bundle on protective coatings, focusing on water-borne solutions, with articles, videos and other content handpicked by the European Coatings Team. In addition to cutting-edge technical articles, the Tech Report is rounded off with valuable market insights and key fundamentals on water-borne protective coatings.
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