Mesophase pitch-based carbon fibres.

摘要

A method for producing high strength, high modulus carbon fibers having a modulus of elasticity of 75 tonf/mm<2> or more and a tensile strength of 250 kgf/mm<2> or more is provided. This method comprises graphitizing mesophase-pitch-based carbon fibers at a temperature of 2600 DEG C or more for several seconds or for several minutes while stretching said fibers with a stretching ratio which satisfies specified relations, relative to the modulus of elasticity.