Carbonaceous cylindrical body and process for producing the same

Details Carbonaceous cylindrical body and process for producing the same Carbonaceous cylindrical body and process for producing the same

1988-06-22

1990-04-17

Thurlow, Jeffery

Stock material or miscellaneous articles

Hollow or container type article

156192, 156202, 162146, 1621572, 162206, 162207, 162223, 162224, 264 294, 264 296, 264131, 264137, 264294, 264344, 427227, 427228, 428219, 428408, B29C 4132, B29C 5356, B32B 2712, C01B 3102

Patent

active

049179233

ABSTRACT:
A carbonaceous cylindrical body including a composite body of a carbonized material of a thin paper-like supporting body having a strength ratio of lengthwise direction to widthwise direction of 2 to 10 and obtained by manufacturing a paper-like body so that its carbonizable fibers are oriented and a carbonaceous matrix having an optically isotropic structure under a polarizing microscope and which shows a carbon content of at least 85% by weight, an oxygen gas permeation coefficient of 10.sup.-2 to 10.sup.-7 cm.sup.2 /sec. under a partial pressure of oxygen of 1 atmosphere and a bulk density of from 1.4 to 1.9 g/cm.sup.3. A process for producing the carbonaceous cylindrical body is also provided.

REFERENCES:
patent: 3814642 (1974-06-01), Araki et al.
patent: 3922412 (1975-11-01), Yoshikawa et al.
patent: 4064207 (1977-12-01), Decrescente et al.
patent: 4226816 (1980-10-01), Yamamoto et al.
patent: 4359438 (1982-11-01), Hoggins et al.
patent: 4576770 (1986-03-01), Schultz
patent: 4619796 (1986-10-01), Awata et al.
patent: 4627944 (1986-12-01), Murakami et al.
patent: 4728535 (1988-03-01), Joo et al.

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