Carbon fibres

Details Carbon fibres Carbon fibres

1991-03-27

1992-03-24

Dixon, Jr., William R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

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

Patent

active

050986880

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 0.2 to 0.8 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: 5004590 (1991-04-01), Schimpf et al.

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