Thermal oxidation of carbon fibers and carbon-fiber reinforced high-temperature polyimide composite at elevated temperatures
- Univ. of Houston, TX (United States). Dept. of Mechanical Engineering
A comprehensive study of thermal oxidation stability of PAN-based IM6 carbon fibers and an IM6 carbon-fiber reinforced Avimid-N polyimide composite is conducted. The IM6 carbon fibers and the IM6/Avimid-N composite are subjected to isothermal heating at selected temperatures up to 398 C. Thermal oxidation of the IM6 fibers is characterize y determining: (1) continuous weight loss, and (2) change of fiber surface morphology, during isothermal heating histories. The high-temperature thermal oxidation of the IM6/Avimid-N composite is investigated by studying: (1) change in glass transition temperature (T{sub g}), and (2) weight loss, of the composite during thermal aging. Both the initial moisture content and the long-term thermal aging affect the composite T{sub g} appreciably, and appreciable anisotropy of thermal oxidation is prevalent in the IM6/Avimid-N composite. Based on the experimental results obtained, a kinetic model of the anisotropic high-temperature oxidation is developed for the composite. Good agreement is found between the predictions and the experimental data.
- OSTI ID:
- 89823
- Report Number(s):
- CONF-9409291-; ISBN 1-56676-220-0; TRN: IM9536%%253
- Resource Relation:
- Conference: 9. technical conference of the American Society for Composites, Newark, DE (United States), 20-22 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the American Society for Composites: Ninth technical conference; PB: 1319 p.
- Country of Publication:
- United States
- Language:
- English
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