Method for producing pitch-type carbon fiber

Details Method for producing pitch-type carbon fiber Method for producing pitch-type carbon fiber

1991-11-18

1993-04-20

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

26421111, 26421117, 264518, 264555, 4234471, D01F 912, D01F 1110

Patent

active

052040305

ABSTRACT:
A method for producing pitch-type carbon fiber, comprising the steps of discharging, from a spinning nozzle, a spinning pitch comprising an optically isotropic pitch and/or optically anisotropic pitch, maintained at such a temperature that the spinning pitch can have a viscosity of 20 poises or less, to form pitch fiber, while jetting a gas preheated to a temperature of 100.degree. C. lower than the temperature at which the spinning pitch can have a viscosity of 20 poises or less, or higher from the periphery of the spinning nozzle in the same direction as the discharging direction of the spinning pitch and parallel to the discharged pitch fiber to give extremely fine fiber having an average diameter of 5 .mu.m or less, and subjecting the thus spun fine fiber to infusibilization and carbonization.

REFERENCES:
patent: 4816195 (1989-03-01), Hettinger, Jr. et al.
patent: 4818463 (1989-04-01), Buehning

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