Carbon fibers

Details Carbon fibers Carbon fibers

1983-08-05

1991-04-02

Dixon, Jr., William R.

Plastic article or earthenware shaping or treating: apparatus

Forming surface and means feeding fluent stock thereto

4234471, 4234474, 4234476, 264 292, 264 297, 811552, D01F 912

Patent

active

050045903

ABSTRACT:
Polyacrylonitrile (PAN)-based carbon fiber in the form of a filament bundle has a high Modulus and a high Tensile Strength in the Impregnated Strand Test respectively between about 42 million and 50 million psi and between about 600,000 and 900,000 psi, and Short Beam Shear Strength between about 15,000 and 19,000 psi in the Laminate Test; this PAN-based carbon fiber also has an electrolytically treated surface at 0.5 columbs per inch per approximate 12,000 filaments. The preparation of this PAN-based carbon fiber was accomplished by stretching during carbonization previously stretched and stabilized fine denier precursor while maintaining temperatures and heat up rates within certain ranges.

REFERENCES:
patent: 3656904 (1972-04-01), Ram
patent: 4100004 (1978-07-01), Moss et al.
patent: 4347279 (1982-08-01), Saji et al.
Bacon, J. of Applied Physics, vol. 31, No. 2, pp. 283-290, Feb. 1960.

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