Pitch based carbon fiber and process for producing the same

Details Pitch based carbon fiber and process for producing the same Pitch based carbon fiber and process for producing the same

1995-06-20

1998-02-24

Lewis, Michael

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

4234472, 428367, D01F 912

Patent

active

057213089

ABSTRACT:
A pitch based carbon fiber, having a thermal conductivity in the direction of the fiber axis of from 500 to 1,500 W/m.multidot.K, a tensile modulus of at least 85 ton/mm.sup.2, a compression strength of at least 35 kg/mm.sup.2, a laminated layer thickness, Lc, of graphite crystallites of from 30 to 50 nm, and a ratio thereto of a spread, La, of graphite crystallites in the direction of the layer plane, of at least 1.5, has high thermal conductivity, excellent compression strength and an excellent tensile modulus of elasticity. When a cross section of said fiber in the direction of the fiber axis is observed by a polarization microscope with 1,000 X magnifications, the domain size as observed is at most 500 nm.

REFERENCES:
patent: 4818612 (1989-04-01), Hara et al.
patent: 4923648 (1990-05-01), Hara et al.
patent: 5213677 (1993-05-01), Yamamoto et al.
patent: 5266294 (1993-11-01), Schultz et al.
patent: 5348719 (1994-09-01), Yamamoto et al.
patent: 5540905 (1996-07-01), Naito et al.

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