Session: Marine Corrosion and Performance Issues for Materials and Coatings
Evaluation of Experimental and Commercial Marine Antifouling Paints After Laboratory Tests and Standardized Performance Protocols (C2026-00295)
Monday, March 16, 2026
10:30 AM - 11:00 AM Central
Location: 361 DE
Earn .5 PDH
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In the present study, accelerated aging tests in a salt spray and a climatic chamber, and immersion tests in artificial seawater in laboratory conditions were performed for selected antifouling (AF) marine paints in intact condition. Additional standardized paint performance protocols were applied, in order to determine the mechanical and physical properties of the paints. The focus of the experimentation was to assess their durability for long-term protection in the marine environment. Novel experimental AF marine paints of silicone and polyurethane formulations were examined, based on an immobilized biocide technology, along with their commercial counterparts, used for benchmarking. The performance of the paints after the aging experiments was assessed through König pendulum hardness, 60° gloss, discoloration (DE) and electrochemical impedance spectroscopy (EIS) measurements. The results indicated that the silicone formulations exhibited the best performance overall. Standardized testing included the water liquid transmission rate test (EN 1062-3), cupping (ASTM E643), chalking (ASTM D 4214-98) and dirt pick-up (ASTM D 3719-00) tests. During these tests, the commercial silicone and the experimental polyurethane paints exhibited the best behavior. The study provides insights that may guide the selection of optimal protective systems for marine structures.
