Space Environmental Exposure of IITRI White Thermal Control Paints.
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
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 27, 1995
- Accession Number
- ADA302436
Entities
People
- C. S. Hemminger
- M. J. Meshishnek
- S. R. Gyetvay
Organizations
- The Aerospace Corporation