Prediction of long-term service life of an organic coating based on short-term exposure results

Abstract

Purpose This study aims to provide a model to predict the service life of a thick organic coating. Design/methodology/approach A series of thin coating films are rapidly tested under the same exposure condition as the thick coating in its service condition by means of electrochemical impedance spectroscopy, scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction. Findings The validity of the model is successfully verified. The long-term protectiveness or service life of a thick organic coating can be rapidly predicted. Originality/value The prediction model does not require long-term experiments or any test that may alter the degradation mechanism of the thick coating.

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

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Research of antiaging behavior of a new sealing coating for color painting cultural relics

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Effect of high-temperature mechanochemistry method modified TiO2 on the dispersibility and corrosion resistance of TiO2-epoxy coatings

“…For example, they cost more, require some additional equipment or hookups and were prone to wear and tear. Under conditions that require good protection, excellent durability and low cost at the same time, organic paints make a very good option (Xu et al , 2022; Tan et al , 2021; Yang et al , 2021; Attia et al , 2022). Currently, organic coatings commonly used in the corrosion prevention field are phenolic resin coatings, polyurethane coatings and epoxy resin coatings (Sari et al , 2020; Lin et al , 2021a, 2021b; Gu et al , 2018; Zhang et al , 2020; Li et al , 2022).…”