Carbon fibers and method for producing same

Details Carbon fibers and method for producing same Carbon fibers and method for producing same

1985-09-12

1992-10-13

Kunemund, Robert

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234472, 4234474, 4234476, 264 292, C01B 3102

Patent

active

051549085

ABSTRACT:
Carbon fibers having a multi-lobal transverse cross-section are produced by extruding a carbonaceous anisotropic liquid precursor through a spinneret having a capillary with a multi-lobal cross-section, solidifying the extruded filament, rendering the filament infusible, and heating the filament in an inert environment at a temperature sufficient to substantially increase the tensile strength and modulus of elasticity of the filament.

REFERENCES:
patent: 3419936 (1969-01-01), Sims
patent: 3439381 (1969-04-01), Plomp
patent: 3478389 (1969-11-01), Bradley et al.
patent: 4208267 (1980-06-01), Diefendorf et al.
patent: 4301135 (1981-11-01), Nazem et al.
patent: 4511625 (1985-04-01), Nazem et al.
Fox, Melt Spinning of Non-Circular Carbon/Graphite Fibers from Mesophase Pitch, Clemson University, May 1984.
Singer, "The Mesophase and High Modulus Carbon Fibers from Pitch," Carbon, vol. 16, pp. 409-415 (1978).
Berg, et al., "Friction and Wear of Graphite Fiber Composites," NBS Journal of Research, vol. 76C, Nos. 1 and 2, Jun., 1972.
Singer, Leonard S., "Carbon Fibers from Mesophase Pitch," Fuel, vol. 60, Sep., 1981, pp. 839-847.

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