Method for producing carbon fibers from acrylonitrile fiber stra

Details Method for producing carbon fibers from acrylonitrile fiber stra Method for producing carbon fibers from acrylonitrile fiber stra

1987-08-07

1989-09-26

Lorin, Hubert

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 83, 264130, 264182, 2642108, 26421115, 264233, D01F 922

Patent

active

048698563

ABSTRACT:
A method for manufacturing carbon fiber strand from an acrylic polymer by steps of (a) wet spinning, (b) washing with water to obtain gelled fiber strand and (c) drying, wherein during the drying step the gelled fiber strand is shrunk by about 5 to 15% when the water of the gelled fiber strand is within a range of from about 100 to 20% by weight based on the weight of the dry fiber strand. An acrylic fiber strand without coalescence or entangling of filaments can consistently be obtained, from which carbon fibers with high quality and substantially no coalescence can be produced.

REFERENCES:
patent: 2883260 (1959-04-01), Melchore et al.
patent: 3514512 (1970-05-01), Kikuchi et al.

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