A small-scale waterjet test method for screening novel foul-release coatings

作者：Lim Chin Sing^*; Dickinson Gary H; Sommer Stacy; Teo Serena Lay Ming; Bodkhe Rajan B; Webster Dean C; Loo Yong Ying

来源：Journal of Coatings Technology and Research, 2015, 12(3): 533-542.

DOI：10.1007/s11998-014-9648-x

• Foul-release coatings
• Biofouling
• Antifouling
• Barnacle adhesion
• Field test
• Siloxane-polyurethane

Foul-release marine coatings are viable alternatives to broad-spectrum biocidal coatings. Efficient and economical methods for field testing and screening of novel foul-release coatings are needed to address performance and stability. Short-term tests that challenge coatings with heavy fouling conditions, by employing small coupons, are desirable to coating developers as this method allows many formulations to be screened at lower material cost and time. By coupling the field test to a miniature waterjet cleaning test, foul-release coatings may also be assessed for ease of fouling removal. Here, the feasibility of using small coupons over large panels for screening of foul-release coatings in static immersion field tests is investigated. Experimental and commercial foul-release coatings were field tested using a large panel, long term (1 year) test and a small coupon, short term (1 month) test. Results were very similar between the two assays, with each clearly distinguishing coating that performed well from those that performed poorly. The method may serve as a useful initial screen for early stage coatings.

• 出版日期2015-5