Method of and apparatus for making pitch fiber infusible

Details Method of and apparatus for making pitch fiber infusible Method of and apparatus for making pitch fiber infusible

1979-06-22

1981-05-05

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

81155, 264 292, 4234472, 4234476, D01F 914

Patent

active

042658691

ABSTRACT:
A method of producing carbon fiber by making infusible and carbonizing pitch fiber which is obtained by melt-spinning petroleum-tar pitch or coal-tar pitch, and a method of making pitch fiber infusible in an air atmosphere containing NO.sub.2, at an elevated temperature by introducing a cross-sectionally U-shaped tray with pitch fiber suspended from bars placed across an upper portion thereof into an infusible material producing furnace having gas exchanging chambers in the inlet portion and outlet portion thereof as well as at least two gas circulating means each of which comprises a combination of a blower or a fan and a heat exchanger, and retaining said tray in said furnace.

REFERENCES:
patent: 3702054 (1972-11-01), Araki et al.
patent: 4016247 (1977-04-01), Otani et al.
Watt et al., "Applied Polymer Symposia", No. 9, 1969, pp. 215-217.

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