High elongation, high strength pitch-type carbon fiber

Details High elongation, high strength pitch-type carbon fiber High elongation, high strength pitch-type carbon fiber

1990-10-22

1993-05-11

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428367, 4234471, 4234472, D02G 300

Patent

active

052099750

ABSTRACT:
The present invention relates to a high elongation, high strength pitch-type carbon fiber which has an improved handleability. The carbon fiber of this invention has a crystalline structure arranged in such a manner that the angle (.phi.) is 24.degree.-38.degree.; the stack height (L.sub.c) is 19-35 .ANG.; and, the interlayer spacing (d.sub.002) of the X-ray structural parameter is 3.45-3.50 .ANG.. The atomic ratio of oxygen to carbon on the surface of the fiber measured by X-ray photoelectron spectrometry is 0.1-0.35. The total oxygen content in the fiber is 0.01-0.2 wt. %; and, the elongation is 1.0% or more. The high elongation, high strength pitch-type carbon fiber prepared in accordance with the present invention can be used, for example, as a reinforcing fiber for light-weight structural material employed in the aerospace, automotive and architectural industries.

REFERENCES:
patent: 4822587 (1989-04-01), Hino et al.
patent: 4863708 (1989-09-01), Seo et al.
patent: 4898723 (1990-02-01), Suto et al.
patent: 4913889 (1990-04-01), Takai et al.
patent: 4983457 (1991-01-01), Hino et al.

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