Abstract
Samples of International Space Station (ISS) thermal control coatings were exposed to simulated low Earth orbit (LEO) environmental conditions to determine effects on optical properties. In one test, samples of the white paint coating Z-93P were coated with outgassed products from Tefzel® (ethylene tetrafluoroethylene copolymer) power cable insulation as may occur on ISS. These samples were then exposed, along with an uncontaminated Z-93P witness sample, to vacuum ultraviolet (VUV) radiation to determine solar absorptance degradation.
The Z-93P samples coated with Tefzel outgassing products experienced greater increases in solar absorptance than witness samples not coated with Tefzel outgassing products. In another test, samples of second surface silvered Teflon® FEP (fluorinated ethylene propylene), SiOx, (where x≈2)-coated silvered Teflon FEP, and Z-93P witness samples were exposed to the combined environments of atomic oxygen and VUV radiation to determine optical properties changes due to these simulated ISS environmental effects. This test verified the durability of these materials in the absence of contaminants.
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References
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© 2001 Springer Science+Business Media Dordrecht
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Dever, J.A., Rutledge, S.K., Hasegawa, M.M., Reed, C.K. (2001). Evaluation of Low Earth Orbit Environmental Effects on International Space Station Thermal Control Materials. In: Kleiman, J.I., Tennyson, R.C. (eds) Protection of Space Materials from the Space Environment. Space Technology Proceedings, vol 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0714-6_14
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DOI: https://doi.org/10.1007/978-94-010-0714-6_14
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