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Optical Properties of Thermal Control Coatings After Weathering, Simulated Ascent Heating, and Simulated Space Radiation ExposureSpacecraft radiators reject heat to their surroundings and coatings play an important role in this heat rejection. The coatings provide the combined optical properties of low solar absorptance and high infrared emittance. The coatings are applied to the radiator panel in a number of ways, including conventional spraying, plasma spraying, or as an applique. Not designed for a terrestrial weathering environment, the durability of spacecraft paints, coatings, and appliques upon exposure to weathering and subsequent exposure to ascent heating, solar wind, and ultraviolet radiation was studied. In addition to traditional aluminum panels, new isocyanate ester composite panels were exposed for a total of 90 days at the Atmospheric Exposure Site of Kennedy Space Center's (KSC) Beach Corrosion Facility for the purpose of identifying their durability to weathering. Selected panel coupons were subsequently exposed to simulated ascent heating, solar wind, and vacuum ultraviolet (UV) radiation to identify the effect of a simulated space environment on as-weathered surfaces. Optical properties and adhesion testing were used to document the durability of the paints, coatings, and appliques.
Document ID
20080025998
Document Type
Technical Memorandum (TM)
Authors
Jaworske, Donald A. (NASA Glenn Research Center Cleveland, OH, United States)
Tuan, George C. (NASA Johnson Space Center Houston, TX, United States)
Westheimer, David T. (NASA Johnson Space Center Houston, TX, United States)
Peters, Wanda C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kauder, Lonny R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
June 1, 2008
Subject Category
Nonmetallic Materials
Report/Patent Number
E-16525
NASA/TM-2008-215259
Meeting Information
39th Central Regional Meeting of the American Chemical Society(Columbus, OH)
Funding Number(s)
WBS: WBS 463169.04.03.05.05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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