Improved Protective Coatings for Sonar Domes.
Abstract
It has been the usual practice to coat the SQS-26 sonar domes with a standard Navy vinyl system consisting of one coat of formula F117 pretreatment primer, four coats of formula F119 red lead (vinyl) primer, and two coats fof formula F121 red (vinyl) antifouling coating. This coating system has deteriorated in the 'acoustic window' area of the dome by loosening, cracking and peeling. This deterioration caused serious interference with sonar operation. An interim solution has been the complete removal of the coating system down to the bare metal in the 'window area'. However this introduces a fouling problem requiring frequent scraping of the dome by divers; and results in increased rate of corrosion. A desirable solution would be one in which the 'window area' would be protected with a coating system consisting of component coatings such as a pretreatment primer, an anti-corrosive coating, an anti-fouling coating, and any necessary tie-coatings which provide high adhesion strength between the anti-corrosive coating and the anti-fouling coating.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 02, 1966
- Accession Number
- ADA060188