Accession Number:

AD0600905

Title:

PROTECTIVE COATINGS FOR DEEP SUBMERGENCE VESSELS.

Descriptive Note:

Quarterly rept. no. 1, 18 Feb-18 May 64,

Corporate Author:

UNITED STATES RUBBER CO WAYNE N J

Personal Author(s):

Report Date:

1964-05-28

Pagination or Media Count:

39.0

Abstract:

Reviews of technical literature on diffusion theory, diffusion properties of gases water vapor in polymers, diffusion measurements, the effects of moisture on resins and resinglass laminates and mechanisms of water absorption were carried out. Two methods for determining the diffusion constants for moisture in polymers have been adapted to the requirements of the project. The diffusion constants for a number of candidate materials have been measured and others are in progress. Some have already been eliminated from further consideration and replaced by new materials suggested by our findings to date and by recent literature. A number of the polymers under consideration appear to be capable of effective performance as coatings for the control of water vapor diffusion into a laminate wall. A theoretical basis for the design of deep submergence wall structures for controlled moisture permeation has been outlined. The relative humidity of the atmosphere within the vessel and thermal gradients in the wall significantly alter the normal diffusion pattern. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE