Research Abstracts
Publications
Research Group
Courses
Fred L. Cook Home Page
TFE Home Page
Georgia Tech Home Page
Last Updated: May 11, 1998 |
New Aspects in the Stabilization of Acrylic Fibers for
Carbon Fibers"
Abstract
The kinetic and morphological influences of nitrogen, air and ammonia in
the environment for stabilization of PAN-based precursors for carbon fibers
have been investigated. A careful thermal analysis conducted earlier by
L. H. Peebles et al. identified ammonia to be a possible accelerator of
the reactions. The present study shows that ammonia does increase the rate
of stabilization, but the presence of oxygen with ammonia is essential to
reach rapidly the stabilized state suitable for carbonization. The preliminary
results from X-ray scattering and elemental analyses also suggest that the
influence of ammonia is not just to accelerate the stabilization reactions,
but also to cause the reaction paths to be different. |