Accession Number:

AD0431517

Title:

EVALUATION OF SUPER KOROPON AIRCRAFT PRIMER SURFACER.

Descriptive Note:

Final rept.

Corporate Author:

MCDONNELL AIRCRAFT CORP ST LOUIS MO

Personal Author(s):

Report Date:

1964-03-10

Pagination or Media Count:

5.0

Abstract:

This test was initiated to determine if Super Koropon Primer Surfacer can be overcoated with MMS-405 Epoxy Enamel, and to establish the approximate drying time which will permit sanding to a smooth finish. The Primer Surfacer was prepared by mixing four volumes of 513-009 paste to one volume of 910-077 curing solution. Two coats were applied, approximately .003-inch thick, allowing 30 minutes for drying between coats. The panel could be sanded in one hour however, the primer was not completely cured. After sanding the primer to a smooth finish, two more coats were applied as described above. The primer was dried, cured, and sanded. There was no damage to any panel by the wet or dry tape tests, nor any film degradation due to exposure to 300F. The drying time is dependent upon the thickness. A thin coat of approximately .003-in. can be sanded in one hour. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE