Advancing corrosion protection in confined spaces: a solvent-free UV LED-curable coating for steel pipelines with enhanced barrier properties and harsh environment performance

IF 2.3 4区材料科学 Q2 CHEMISTRY, APPLIED Journal of Coatings Technology and Research Pub Date : 2024-04-29 DOI:10.1007/s11998-024-00950-3

Alessandro Condini, Carlo Trentalange, Angela Giuliani, Andrea Cristoforetti, Stefano Rossi

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Abstract

This study investigates a novel solvent-free, UV LED-curable coating as a robust corrosion protection solution for the inner surface of steel pipelines. The properties of the UV-cured film were characterized in terms of reactivity, thermomechanical properties, and adhesion to metal substrates. The coating was applied to the inside steel pipelines and cured using a patented UV LED lamp designed to fit in confined spaces. Finally, electrochemical impedance spectroscopy characterization and an accelerated cyclic electrochemical technique were performed on the coated pipes to study the corrosion protection properties of the coating, both with and without the addition of inorganic fillers. The results were compared to a commercially available thermally cured coating. It was found that the UV-cured coating confers high barrier properties, effectively preventing liquid penetration even under elevated temperature conditions. Furthermore, the corrosion protection performance in harsh environments was comparable to and, in some cases, higher than standard epoxy linings.

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推进密闭空间的防腐蚀保护：用于钢质管道的无溶剂紫外线 LED 固化涂料，具有更强的阻隔性能和恶劣环境性能

本研究探讨了一种新型的无溶剂紫外线 LED 固化涂层，作为钢质管道内表面的强腐蚀保护解决方案。研究人员从反应性、热力学特性以及与金属基材的附着力等方面对紫外线固化薄膜的特性进行了表征。涂层被涂抹在钢制管道内部，并使用专为狭小空间设计的专利紫外线 LED 灯进行固化。最后，对涂层管道进行了电化学阻抗光谱表征和加速循环电化学技术，以研究涂层的防腐蚀性能，包括添加和不添加无机填料的情况。研究结果与市售的热固化涂层进行了比较。结果发现，紫外线固化涂层具有很高的阻隔性能，即使在高温条件下也能有效防止液体渗透。此外，在恶劣环境中的防腐蚀性能与标准环氧内衬相当，在某些情况下甚至高于标准环氧内衬。

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来源期刊

Journal of Coatings Technology and Research 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.