Carbon fiber manufacturing processes PAN (polyarylonitrile) based carbon fibers ● Pan fibers Stabilization at 200-300 C in O2, depolymerization &e aromatization, converting thermoplastic PAN to a nonplastic cyclic or ladder compound Carbonization at 1000-1500 C in an inert atmosphere to get rid of noncarbon elements Stretch and graphitization at >1800 C, formation of turbostratic structureCarbon fiber manufacturing processes – PAN (polyarylonitrile) based carbon fibers ⚫ PAN fibers Stabilization at 200-300°C in O2 , depolymerization & aromatization, converting thermoplastic PAN to a nonplastic cyclic or ladder compound Carbonization at 1000-1500°C in an inert atmosphere to get rid of noncarbon elements Stretch and graphitization at >1800°C, formation of turbostratic structure