Hyperthermal atomic oxygen reactions with kapton and polyethylene
Conference
·
OSTI ID:7121833
- Los Alamos National Lab., NM (USA)
- National Aeronautics and Space Administration, Houston, TX (USA). Lyndon B. Johnson Space Center
- Alabama Univ., Huntsville, AL (USA). Dept. of Chemistry
Gas phase reaction products produced by the interaction of high kinetic energy (1--3 eV) {sup 3}P ground state atomic oxygen (AO) with polyethylene and kapton were found to be H{sub 2}, H{sub 2}O, CO, and CO{sub 2} 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. 16 refs., 13 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- DOE/MA
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7121833
- Report Number(s):
- LA-UR-90-1591; CONF-900206-9; ON: DE90011963
- Resource Relation:
- Conference: 119. TMS (The Minerals, Metals Metallurgical Society) annual meeting and exhibit, Anaheim, CA (USA), 18-22 Feb 1990
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
37 INORGANIC
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PHYSICAL AND ANALYTICAL CHEMISTRY
POLYETHYLENES
OXIDATION
POLYMERS
ACTIVATION ENERGY
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OXYGEN
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ENERGY
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
POLYETHYLENES
OXIDATION
POLYMERS
ACTIVATION ENERGY
CHEMICAL REACTIONS
KINETIC ENERGY
OXYGEN
REACTION INTERMEDIATES
ELEMENTS
ENERGY
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYOLEFINS
360604* - Materials- Corrosion
Erosion
& Degradation
400201 - Chemical & Physicochemical Properties