Accession Number : AD0474088


Title :   AEROSPACE EXPANDABLE STRUCTURES AND MAINTENANCE SUPPORT DEVICES. VOLUME II. EVALUATION OF ADHESIVES SYSTEMS FOR ANCHORING ASTRONAUTS TO A WORK SITE IN SPACE,


Corporate Author : GCA VIRON DIV MINNEAPOLIS MN


Personal Author(s) : Rochon, Ronald ; Peterson, Curtis R


Report Date : Jul 1965


Pagination or Media Count : 21


Abstract : The feasibility of utilizing a thermally initiated adhesive as a space maintenance support device was demonstrated under a number of simulated space conditions. As end items of this study, 300 adhesive patches were fabricated and delivered to the Air Force for evaluation. Adhesive coated flexible foam patches adhered to reinforced plastic and aluminum surfaces within the limits of the design specifications. The best adhesive was a combination of Versamide with a 'Pyrofuze' energy source. Optimum performance of the adhesive patches was achieved if the separate adhesive formulations on separate patches were used for high and low temperature applications. A one patch system for the entire temperature range with both adhesive formulations combined in concentric areas reduced bond strengths because of the smaller area available to each adhesive. Tensile strengths of bonds to reinforced plastic at -112 F were as high as 44 lb on a 2-inch diameter patch. Tensile strengths of bonds to reinforced plastic at 200 F were 32 lb on 2-inch diameter patches. Tensile strengths of 20.8 psi were recorded when bonding 1-1/2-inch diameter patches to aluminum adherends at 80 F. (Author)


Descriptors :   *EXPANDABLE STRUCTURES , *ADHESIVES , *ASTRONAUTS , AEROSPACE CRAFT , SPACE ENVIRONMENTS , ATTACHMENT , MAINTENANCE PERSONNEL , SAFETY , BONDING , SPACECRAFT , ALUMINUM , EXPANDED PLASTICS , ISOCYANATES , PYROTECHNICS , MELTING , TENSILE PROPERTIES , HIGH TEMPERATURE , LOW TEMPERATURE


Subject Categories : Adhesives, Seals and Binders
      Astronautics


Distribution Statement : APPROVED FOR PUBLIC RELEASE