Accession Number:

AD0270559

Title:

RESEARCH AND DEVELOPMENT OF AIRSHIP ENVELOPE FABRIC

Descriptive Note:

Corporate Author:

CHEMICAL RUBBER PRODUCTS INC BEACON NY

Personal Author(s):

Report Date:

1961-10-01

Pagination or Media Count:

1.0

Abstract:

Airship envelope fabric of hot-stretched, heatstabilized Dacron fabrics has a decided advantage of low elongation. This advantage is attained at the expense of a less uniform quality and greater processing difficulties. An additional processing step of heat-setting the unstable hot-stretch, heat-stabilized Dacron cloth on a tenter frame resulted in a more uniform product and tended to balance out the wide differences in properties of the cloth from different suppliers this was attained at the expense of an increase in elongation. Limiting the finishing operation of the cloth to heat-setting resulted in the most desirable stress-strain curves. The second beast method of finishing was heat-setting followed by scouring. Neoprene, from a theoretical consideration based on the permeability constants for He, was the poorest choice of any elastomer considered. Butyl and Hypalon possessed lower permeability constants for He however, these elastomers require a pressure cure for consistently good results. Hypalon is preferred to butyl for the gas barrier film. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE