Abstract: Simple and effective test evaluation methods can shorten the development cycle of antifouling paints and provide reliable basis for its practical application. The main testing methods of evaluating low surface energy coatings include dynamic test method, measurement of barnacle adhesion strength in shear and coatings frictional resistance test, etc. Based on the test standard ASTM D5618—1994 (2011) as a reference, contrast tests for low surface energy coatings and self-polishing antifouling coatings immersed in sea have been carry out. Then the force required to remove the barnacle is measured. The barnacle adhesion strength in shear is calculated, and the antifouling performance is discussed. With the help of deductive formulas, the minimum requirements of seawater relative velocity in shear and navigational speed to remove the barnacle can be determined, and the test methods can be modified for more practical and referential.
MATIAS J R, RABENHORST J, MARY A, et al. Marine biofouling testing of experimental marine paints: technical considerations on methods, site selection and dynamic tests[J]. Poseidon,2003,10:1.
LARSSON A I, MATTSSON-THORNGREN L, GRANHAG L M, et al. Fouling-release of barnacles from a boat hull with comparison to laboratory data of attachment strength.[J]. Journal of Experimental Marine Biology ＆ Ecology, 2010, 392(1):107-114.