Carbon fibers and process for their production

Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon

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4234476, D01F 912

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active

058402659

ABSTRACT:
Pitch based carbon fibers characterized in that their thermal conductivity is at least 1,000 W/m.multidot.K as measured at room temperature, their electrical resistivity is at most 1.2 .mu..OMEGA.m, their tensile modulus is at least 95 ton/mm.sup.2, their compression strength is at least 30 kg/mm.sup.2, and the ratio of crack-free fibers to cracked fibers is from 5/95 to 30/70, where the crack-free fibers are fibers having no cracks in their cross section, and the cracked fibers are fibers having cracks in their cross section.

REFERENCES:
patent: 4923648 (1990-05-01), Hara et al.
patent: 5213677 (1993-05-01), Yamamoto et al.
patent: 5266294 (1993-11-01), Schulz et al.
patent: 5348719 (1994-09-01), Yamamoto et al.
patent: 5601794 (1997-02-01), Yamamoto et al.

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