Process for producing high-strength, high-modulus carbon fibers

Details Process for producing high-strength, high-modulus carbon fibers Process for producing high-strength, high-modulus carbon fibers

1988-10-27

1990-04-17

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 296, 264 297, 264 41, 264 83, 264130, 264136, 264182, 264206, 2642102, 2642103, 2642104, 2642107, 2642108, 26421115, 26421116, 2642888, D01F 618, D01F 922

Patent

active

049178369

ABSTRACT:
A process of producing carbon fibers, which comprises oxidizing polyacrylonitrile filaments having a tensile strength at 240.degree. C. of 0.3 g/d or higher and a tensile modulus at 240.degree. C. of 2.0 g/d or higher in an oxidizing atmosphere under a high tension of 0.2 g/d or higher, and carbonizing the oxidized filaments under a high tension.

REFERENCES:
patent: 2957748 (1960-10-01), Lieseberg

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