Method for producing high strength, high modulus mesophase-pitch

Details Method for producing high strength, high modulus mesophase-pitch Method for producing high strength, high modulus mesophase-pitch

1988-06-03

1990-02-06

Stoll, Robert L.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234471, 4234472, 4234476, 423448, 264 292, D01F 912

Patent

active

048987239

ABSTRACT:
A method for producing mesophase pitch based carbon fibers which enables to produce high strength high modulus carbon fibers at a relatively low temperature with stabilized production manner. This method comprises carbonizing infusibilized fibers, in an inert atmosphere under no tension state or a tension of 1 mg/denier or less in the first stage to give a specified interlayer spacing and a crystallite thickness and then carbonizing under a tension of 50-300 mg/denier at a temperature of 2600.degree. C. or more in the second stage.

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