NASA NTRS · 19920015577
Atomic oxygen interactions with FEP Teflon and silicones on LDEF
Abstract
The Long Duration Exposure Facility (LDEF) spacecraft has enabled the measurement of the effects of fixed orientation exposure of high fluence atomic oxygen on fluorinated ethylene propylene (FEP Teflon) and silicones. The atomic oxygen erosion yield for the FEP Teflon was found to be 3.64 x 10(exp -25) cm(exp 3)/atom. This erosion yield is significantly higher than that measured from previous low fluence orbital data. The FEP Teflon erosion yield was found to have the same dependence on oxygen arrival angle as Kapton and Mylar. Atomic oxygen interaction with silicon polymers results in the crazing of silicon. Released silicone contaminants were found to darken upon further atomic oxygen exposure.
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Bruce A. Banks, Joyce A. Dever, Linda Gebauer, Carol M. Hill. 1992-06-02. Atomic oxygen interactions with FEP Teflon and silicones on LDEF. https://ntrs.nasa.gov/citations/19920015577
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