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A Study of Various Parameters Affecting the Performance of Liquid-Applied Epoxy Pipeline Coatings

Picture for A Study of Various Parameters Affecting the Performance of Liquid-Applied Epoxy Pipeline Coatings
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Protective coatings provide the primary defense against corrosion of pipelines. Adhesion is one of the most crucial properties for coatings to function properly and support successful long-term integrity. If the bond between the coating and substrate is weak or deteriorates, the coating ceases to be attached to the substrate, and the coating loses its effectiveness and eventually fails.

Product Number: 51323-19474-SG
Author: Shan Rao, Haralampos Tsaprailis, Jiajun Liang
Publication Date: 2023
$20.00
$20.00
$20.00

Understanding wet adhesion behaviors of protective coatings is a subject of considerable interest, as the durability of the interfacial adhesion between coating and steel substrate is the key element in controlling coating lifetime, especially in buried or submerged conditions. Previously published work has confirmed that there are significant effects of different blast abrasives on the corrosion resistance of liquid-applied epoxy pipeline coatings. This study explores the disbondment response versus test temperature of the same coating on surfaces prepared by various abrasives. The test results are not only beneficial for selecting appropriate abrasives for specific service requirement, but also essential for the development of reliable accelerated ageing protocols to evaluate pipeline coatings. Despite the importance of surface preparation, application also plays key role in a coating’s performance and these factors (e.g., mixing ratio, variation of coating film thickness) were examined and discussed. The long-term performance prediction was verified by testing the coatings applied on the surfaces prepared by the best abrasive performers in cathodic disbondment testing and hot water immersion for extended test duration.

Understanding wet adhesion behaviors of protective coatings is a subject of considerable interest, as the durability of the interfacial adhesion between coating and steel substrate is the key element in controlling coating lifetime, especially in buried or submerged conditions. Previously published work has confirmed that there are significant effects of different blast abrasives on the corrosion resistance of liquid-applied epoxy pipeline coatings. This study explores the disbondment response versus test temperature of the same coating on surfaces prepared by various abrasives. The test results are not only beneficial for selecting appropriate abrasives for specific service requirement, but also essential for the development of reliable accelerated ageing protocols to evaluate pipeline coatings. Despite the importance of surface preparation, application also plays key role in a coating’s performance and these factors (e.g., mixing ratio, variation of coating film thickness) were examined and discussed. The long-term performance prediction was verified by testing the coatings applied on the surfaces prepared by the best abrasive performers in cathodic disbondment testing and hot water immersion for extended test duration.

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(Pipeline, Oil & Gas) Advantages of a True 100% Epoxy, Pipeline Coating in Cold Weather vs. The Comm

Product Number: 22-COAT_DEC21
Author: Nicholas Barnett
Publication Date: 2021
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Coating systems are critical in the mitigation of corrosion on pipelines and their integrated parts.
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