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PITCH-BASED CARBON FIBERS SUPERIOR IN COMPRESSIVE PHYSICAL PROPERTIES AND THE PROCESS FOR PRODUCING THE SAME
PITCH-BASED CARBON FIBERS SUPERIOR IN COMPRESSIVE PHYSICAL PROPERTIES AND THE PROCESS FOR PRODUCING THE SAME
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机译:具有优异物理性能的沥青基碳纤维及其制备方法
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摘要
A process for producing a pitch-based carbon fiber comprises hydrogenating a carbonaceous pitch in the presence of a hydrogenation catalyst to add to the pitch two moles or more hydrogen per pitch molecule; heat-treating the hydrogenated pitch at atmospheric pressure or under reduced pressure to obtain an optically anisotropic pitch; collecting from said optically anisotropic pitch a component which is insoluble in an organic solvent having a solubility parameter at 25 DEG C of 7.4 to 9.0 and soluble in an organic solvent having a solubility parameter at 25 DEG C of 9.2 to 11.0 to obtain a spinning pitch having an optically anisotropic phase content of 5% to 40% by volume; spinning said spinning pitch; and thereafter making the resulting pitch fiber infusible and then carbonizing the thus-infusiblized pitch fiber.
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