Session: Advanced Protective Coating Technology Symposium & Forum (Part I of III)
Influence of temperature and relative humidity on the performance of splash zone protective coatings. (C2026-00033)
Monday, March 16, 2026
9:30 AM - 10:00 AM Central
Location: 350 DEF
Earn .5 PDH
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For offshore structures, protective coatings in used in the splash zone face high risk of physical damage. In addition, maintenance of the coating is challenging during service life. A good balance between the coatings’ mechanical properties and anti-corrosive performance is key for trouble-free long-term steel protection. In this study, an unsaturated polyester coating system is evaluated via accelerated cyclic aging up to 2 years exposure, based on the qualification tests defined in NORSOK M501 edition 7 for System 7A. Furthermore, dynamic mechanical analysis (DMA) equipped with a temperature and humidity controller has been employed to show the impact of temperature and relative humidity on the coating’s mechanical properties. The polymers cross-linking density, indicated by the glass transition temperature, defines the vulnerability of a coating under different environments. The results from this study are valuable for correlating a coating’s accelerated aging performance with service lifetime prediction.
