Accession Number:

AD0632248

Title:

AN EVALUATION OF THE EFFECT OF THE THICKNESS OF WASH PRIMER,

Descriptive Note:

Corporate Author:

NAVAL AIR ENGINEERING CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB

Personal Author(s):

Report Date:

1966-01-21

Pagination or Media Count:

15.0

Abstract:

Adhesion characteristics of the specifications MIL-C-22750AWEP epoxy-polyamide and the MIL-C-19537Aer acrylic-nitrocellulose systems using thick and thin coatings of MIL-C-8514Aer wash primer are compared over various metal surfaces. The adhesion of both finish systems utilizing the heavier .6 plus or minus .1 mils wash primer is significantly better in dry adhesion tests and as good, or better, in wet adhesion tests than the .2 - .3 mils wash primed systems. Corrosion resistance of 2024 bare aluminum alloy panels with no chemical treatment, and coated with the aforementioned systems is better when thick .6 plus or minus .1 mil MIL-C-8514Aer wash primer is applied as compared to the thin .2 - .3 mil wash primer. Recommendation is made to use the thicker coat of wash primer and to incorporate the necessary changes in the applicalbe process specifications. Author

Subject Categories:

  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE