Accession Number : ADA310453

Title :   Properties of Two White Paints for Application to Inflatable Spacecraft: Titanium-Dioxide-Pigmented Epoxy and Zinc-Oxide-Pigmented Methyl Silicone Elastomer.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Woerner, Charles V.

PDF Url : ADA310453

Report Date : JUN 1965

Pagination or Media Count : 24

Abstract : Two white paints prepared for application to inflatable space structures have been studied: a zinc-oxide-pigmented methyl silicone elastomer and a titanium- dioxide- pigment ed epoxy. The data show that either coating can be used on an inflatable structure. The mechanical properties of the silicone paint and the white epoxy paint are excellent, even after cycling through a temperature range of 90 deg C to -196 deg C. The white epoxy paint is found not to be a stable paint for long duration exposure to ultraviolet radiation. The zinc-oxide-pigmented methyl silicone elastomer is reasonably stable under the influence of ultraviolet radiation with an increase of 6 to l5 percent of the initial value of solar absorptance when exposed to 1000 equivalent sun hours of simulated solar ultraviolet radiation. The solar absorptance of both paints is affected much less by electron radiation than by ultraviolet radiation for equivalent exposure times in space for an orbit comparable to that of the 12-foot-diameter sphere, Explorer XTX (l963 53A).

Descriptors :   *SPACECRAFT, *ELASTOMERS, *ZINC OXIDES, *PAINTS, *TITANIUM, THERMAL PROPERTIES, SIMULATION, TEMPERATURE, MECHANICAL PROPERTIES, STABILITY, ULTRAVIOLET RADIATION, SPACE ENVIRONMENTS, SPACE SYSTEMS, EXPOSURE(GENERAL), LONG RANGE(TIME), COATINGS, ELECTRON IRRADIATION, RANGE(EXTREMES), EPOXY COMPOSITES, INFLATABLE STRUCTURES, SILICONES, RADIATION DAMAGE, WHITE(COLOR), METHYLAL, SOLAR ULTRAVIOLET RADIATION.

Subject Categories : Inorganic Chemistry
      Coatings, Colorants and Finishes
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE