Thermoplastic precursor fibers, stabilization

STABILIZATION TREATMENT OF THERMOPLASTIC PRECURSOR FIBERS FOR CARBON FIBERS... [Pg.500]

The stabilization treatment of thermoplastic precursor fibers for carbon fibers is usually a heat treatment process performed in an oxidizing atmosphere above 470K. For stabilization treatment of PAN fibers, 600K is the highest temperature up to which cyclizjation, dehydrogenation and oxidation processes prevail. [Pg.500]

Carbon fibers can be produced from a wide variety of precursors in the range from natural materials to various thermoplastic and thermosetting precursors Materials, such as Polyacrylonitrile (PAN), mesophase pitch, petroleum, coal pitches, phenolic resins, polyvinylidene chloride (PVDC), rayon (viscose), etc. [42-43], About 90% of world s total carbon fiber productions are polyacrylonitrile (PAN)-based. To make carbon fibers from PAN precursor, PAN-based fibers are generally subjected to four pyrolysis processes, namely oxidation stabilization, carbonization and graphitiza-tion or activation they will be explained in following sections later [43]. [Pg.191]