High temperature, low oxidation stabilization of pitch fibers
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United States of America Patent
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Issued Date -
Sep 25, 2003
app pub date -
Mar 24, 2003
filing date -
Apr 9, 1997
priority date (Note) -
Abandoned
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Abstract
The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen diffusion rate to the center of the fiber which is competitive with the rate of oxidation at the fiber's surface. Further, the present invention provides a high density pitch fiber batt which thermosets without loss of fiber structure.
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