Accession Number : AD0600415

Title :   SOUTHERN YELLOW PINE SAPWOOD PANELS WITH COPPER SULPHONATE.

Descriptive Note : Final rept.

Corporate Author : CLAPP (WILLIAM F) LABS INC DUXBURY MASS

Report Date : 12 MAR 1964

Pagination or Media Count : 6

Abstract : This report presents the results of seawater immersion tests. After six and one-half years exposure, unpainted panels treated with Copper Sulphonate showed remarkable resistance to marine borer activity. There were spasmodic evidences of embryonic Bankia and Pholads, but no penetration. All panels were in good condition at the conclusion of the test and their probable service life could be projected several more years. Copper Sulphonate treated panels at all retentions tested showed a definite antifouling influence over a 24 month period. Because of peeling and cracking, failure of Formula 121 antifouling paint began after a year's exposure and the paint was all gone by 24 months. The treated panel (now exposed uncoated) exhibited the same antifouling properties as the original uncoated treated panels. Formula 105 antifouling paint was more successful than the 121 antifouling paint. Cracking and peeling started at a year's exposure but the coating lasted up to 36 months. There was no evidence of marine borer attack in the coated panels as long as the paint was present. (Author)

Descriptors :   (*WOOD, PROTECTIVE TREATMENTS), (*PROTECTIVE TREATMENTS, LIQUID IMMERSION TESTS), LIQUID IMMERSION TESTS, SEA WATER, IMPREGNATION, COPPER COMPOUNDS, SULFONATES, ANTIFOULING COATINGS, MARINE BORERS, PRESERVATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE