Accession Number : ADA302436

Title :   Space Environmental Exposure of IITRI White Thermal Control Paints.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS

Personal Author(s) : Meshishnek, M. J. ; Hemminger, C. S. ; Gyetvay, S. R.

PDF Url : ADA302436

Report Date : 27 APR 1995

Pagination or Media Count : 101

Abstract : Extensive space simulation testing of the IITRI (Illinois Institute of Technology Research Institute) paints Z-93, S13GLO-1, and YB-71, and their reformulated replacements using a new source of potassium silicate binder material (Kasil 2130) has been performed at The Aerospace Corporation using UV and electron radiation in vacuum. Measurements of the pretest and post- test solar absorptances indicated differences in performance for these materials. For Z-93 and Z-93P, the tests have indicated that the two formulations behave nearly identically, and replacement of Z-93 with Z-93P is recommended. S13GLO-1 and its counterpart, S 13 GPLO- 1, performed similarly, but one batch of the new S13GPLO-1 gave anomalous degradation and therefore would warrant further investigation. YB-71P has demonstrated a marked tendency toward radiation damage and is not an appropriate replacement for YB-71. The degradation observed in this new material is attributed to a reaction caused by an unidentified component of the binder producing reduction of titanium in the pigment. Additional research at IITRI will be required to address this problem. jg p.3

Descriptors :   *THERMAL PROPERTIES, *SPACE ENVIRONMENTS, *EXPOSURE(GENERAL), *PAINTS, *RADIATION DAMAGE, *WHITE(COLOR), CONTROL, SIMULATION, ANOMALIES, SOURCES, ULTRAVIOLET RADIATION, DEGRADATION, MATERIALS, FORMULATIONS, VACUUM, TEST METHODS, REDUCTION, COATINGS, TITANIUM, ELECTRON IRRADIATION, BINDERS, SILICATES, POTASSIUM COMPOUNDS.

Subject Categories : Coatings, Colorants and Finishes
      Inorganic Chemistry
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE