Method for the production of porous carbon sheet

Details Method for the production of porous carbon sheet Method for the production of porous carbon sheet

1975-03-13

1976-11-09

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 293, 4234474, 423448, 423449, 429 44, C01B 3102

Patent

active

039911691

ABSTRACT:
A porous carbon sheet having excellent physical properties is obtained by dispersing oxidized pitch fibers in a liquid containing at least one wetting agent having at least one hydroxyl group and a boiling point of not less than 150.degree. C, subsequently shaping the resultant dispersion in the form of a sheet, heating the sheet thus obtained at temperatures in the range of from 50 to 300.degree. C and thereafter, carbonizing the sheet in a nonoxidizing atmosphere. The oxidized pitch fibers contain 45 - 90% by weight of nitrobenzene insolubles and 55 - 90% by weight of fixed carbon and will not flow through a nozzle of 1 mm in diameter under a load of 10 Kg/cm.sup.2 at temperatures of not more than 300.degree. C. The pitch fiber has a diameter in the range of 5 to 100 .mu. and a fiber length/fiber diameter ratio of not less than 2.

REFERENCES:
patent: 3407038 (1968-10-01), Beasley
patent: 3629379 (1971-12-01), Otani
patent: 3649196 (1972-03-01), Degginger
patent: 3671385 (1972-06-01), Trent
patent: 3736159 (1973-05-01), Gibson et al.
patent: 3829327 (1974-08-01), Omori et al.

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