Process for producing carbon fiber fabrics

Details Process for producing carbon fiber fabrics Process for producing carbon fiber fabrics

1995-01-09

1997-04-22

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 297, 26421111, 4234478, D01F 912, D01F 9145

Patent

active

056226608

ABSTRACT:
A process for producing a process for producing a two- or three-dimensional carbon fabric, which process includes melt-spinning (a) an optically anisotropic carbonaceous pitch having an optically anisotropic phase content of 60 to 100%, subjecting the thus- infusibilized fibers to a primary heat treatment at a temperature greater than 1000.degree. and not higher than 2500.degree. C. to produce primary heat treated fibers having a tensile strength not lower than 300 kg/mm.sup.2 and a breaking elongation in the range of 0.4% to 10%, preparing a two- or three-dimensional fabric from the primary heat treated fibers and then subjecting the two- or three-dimensional fabric to a secondary heat treatment at a temperature which is at least 50.degree. higher than the temperature used in the primary heat treatment, the temperature in the secondary heat treatment being higher than 1050.degree. C. and no higher than 3300.degree. C.

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Volk, H.F. "High-Modulus Pitch-Based Carbon Fibers", Presented At The Symposium On Carbon-Fiber-Reinforced Plastics, Bamberg, West Germany, May 11-12, 1977.

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