Advanced Nontoxic Fouling Release Coatings

Download or read book Advanced Nontoxic Fouling Release Coatings written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, marine antifouling paints have used compounds toxic to marine organisms as a means of combating fouling. Foul-release coatings don't use copper or any other metal toxicant to provide effective biofouling control; rather their unique surface chemistry creates a surface to which fouling can not easily adhere. Because they employ a physical rather than a chemical means to reduce fouling, these silicone coatings have been ruled exempt from reporting under FIFRA (Public Law 95-396). NRL developed and patented an advanced foul-release coating system called the duplex silicone coating system to address the durability issues associated with silicone elastomeric coatings. This system employs a tough, cross-linked thermoplastic elastomeric layer (Silgan J501, Wacker Chemie, Ltd.) to bond the foul-release silicone topcoat to the anticorrosive system for ship hulls or to epoxy paint on concrete walls in power plants. The ESTCP demonstrations/validations included 6 Coast Guard aluminum hull boats, 2 Navy Range Boats, a Navy Transporter, an ONR/Lockheed prototype (SLICE) and power plant cooling water intakes (concrete walls, steel trash racks/traveling screens/deflecting veins). Barnacle adhesion measurements (ASTM D 5618-94). Barnacle adhesion measurements and water jet cleaning were developed as part of this project.