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Hyperthermal atomic oxygen reactions with kapton and polyethyleneGas phase reaction products produced by the interaction of high kinetic energy (1-3 eV) 3p ground state atomic oxygen (AO) with polyethylene and kapton were found to be H2, H2O, CO, and CO2 with NO being a possible secondary product from kapton. Hydrogen abstraction at high AO kinetic energy is postulated to be the key reaction controlling the erosion rate of kapton and polyethylene. An Arrhenius-like expression having an activation barrier of 0.4 eV can be fit to the data, which suggests that the rate limiting step in the AO/kapton reaction mechanism can be overcome by translational energy.
Document ID
19910065179
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cross, J. B.
(Los Alamos National Laboratory NM, United States)
Koontz, S. L.
(NASA Johnson Space Center Houston, TX, United States)
Gregory, J. C.
(Los Alamos National Lab. NM, United States)
Edgell, M. J.
(Alabama, University Huntsville, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: Annual Meeting of the Minerals, Metals, and Materials Society
Location: Anaheim, CA
Country: United States
Start Date: February 17, 1990
End Date: February 22, 1990
Sponsors: ASM International, Minerals, Metals and Materials Society
Accession Number
91A49802
Distribution Limits
Public
Copyright
Other

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