Accession Number : AD0431514

Title :   EVALUATION OF THREE METHODS OF APPLYING ' 'SCOTCHCAL' ' TO ALUMINIZED LACQUERED SURFACES.

Descriptive Note : Final rept.,

Corporate Author : MCDONNELL AIRCRAFT CORP ST LOUIS MO

Personal Author(s) : Kern,Edward

Report Date : 10 MAY 1964

Pagination or Media Count : 14

Abstract : Peel strength specimens were prepared to compare the adhesion of the Scotchcal to alodined aluminum, zinc chromate primed, and aluminized lacquered surfaces. Two lacquers, MIL-L-7178 aluminized lacquer and color 16473 lacquer, were used. The highest average peel strengths (9.0 lbs per in.) were obtained from the specimens that had been prepared by applying the Scotchcal directly to the aluminized lacquer, after the lacquer had dried 8 to 24 hours. The lowest average peel strengths (5.5 pounds per in.) were obtained from the specimens that had been prepared by applying the Scotchcal either to the alodined aluminum or to the zinc chromate primed surfaces. (Author)

Descriptors :   (*PLASTIC COATINGS, ADHESION), (*AIRCRAFT FINISHES, ADHESION), ALUMINUM COATINGS, COATINGS, ALUMINUM ALLOYS, ADHESION, VARNISHES, PAINT PRIMERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE