Pitch based carbon fibers.

摘要

The present invention resides in carbon fibers essentially consisting of liquid crystal pitch based continuous monofilaments having an average filament diameter of 20 mu m or greater. The carbon fibers of the present invention can have modulus of elasticity of 80,000 Kgf/mm<2> or greater and tensile strength of 200 Kgf/mm<2> or greater. The carbon fibers of the present invention can be used as a multifilament fiber consisting of plural monofilaments as in case of conventional carbon fibers but it is particularly preferable that a number of constituting monofilaments is one.