Pitch-based carbon or graphite fiber and process for preparation

Details Pitch-based carbon or graphite fiber and process for preparation Pitch-based carbon or graphite fiber and process for preparation

1985-04-03

1986-12-09

Kendell, Lorraine T.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

264 292, 4234471, 4234472, 4234474, 428397, D02G 300

Patent

active

046280014

ABSTRACT:
A pitch-based carbon or graphite fiber having a leafy lamella arrangement in at least 30% of the fiber cross-sectional area and having a tensile strength of at least 300 kg/mm.sup.2. The fiber is prepared by melt-spinning an optically anisotropic pitch having an optically anisotropic phase content of at least 50% through a spinneret in which at least one central line distance in a spinning hole simultaneously satisfies the following requirements I and II,

REFERENCES:
patent: 2129825 (1983-08-01), GBX
patent: 4005183 (1977-01-01), Singer
patent: 4184942 (1980-01-01), Angier et al.
patent: 4208267 (1980-06-01), Diefendorf et al.
patent: 4376747 (1983-03-01), Nazem
patent: 4397830 (1983-08-01), Uemura et al.
patent: 4460557 (1984-07-01), Takashima et al.
patent: 4469667 (1984-09-01), Uemura et al.
patent: 4521294 (1985-06-01), Uemura et al.

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