Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1998-03-04
1999-10-12
Edwards, Newton
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428395, D02G 300
Patent
active
059652608
ABSTRACT:
The present invention provides a highly oriented aramid fiber with high tensile strength, high tensile modulus and low breakage elongation by spinning liquid crystal polymers such as aramids and drafting the polymer in or adjacent to a first coagulating bath. A polymer solution with concentration of 4-24 weight % is extruded as a stream into a non-coagulating fluid, and the stream is stretched in the non-coagulating fluid and passed through a first coagulating bath where it is drafted by using a drafting roller, so that the polymer concentration of the flue is increased sufficient to form fibers. As a result, a highly oriented aramid fiber with tensile strength of 1500-5000 MPa, tensile modulus of 200-500 GPa, and the % elongation of 0.8-1.4 is provided.
REFERENCES:
patent: 3414645 (1968-12-01), Morgan, Jr.
patent: 3574811 (1971-04-01), Jamison
patent: 3671542 (1972-06-01), Kwolek
patent: 3767756 (1973-10-01), Blades
patent: 3869430 (1975-03-01), Blades
patent: 4263245 (1981-04-01), Tan
patent: 4342715 (1982-08-01), Shimada et al.
patent: 4344908 (1982-08-01), Smith et al.
patent: 4368615 (1983-01-01), Lammers
patent: 4374977 (1983-02-01), Fujiwara et al.
patent: 4374978 (1983-02-01), Fujiwara et al.
patent: 4466935 (1984-08-01), Bair et al.
patent: 4507469 (1985-03-01), Shimada et al.
patent: 4606875 (1986-08-01), Chenevey et al.
patent: 4728473 (1988-03-01), Satoh et al.
patent: 4876040 (1989-10-01), Park et al.
patent: 5023035 (1991-06-01), Yang
patent: 5047500 (1991-09-01), Park et al.
patent: 5378538 (1995-01-01), Makino et al.
patent: 5681655 (1997-10-01), Al Ghatta et al.
patent: 5698324 (1997-12-01), Jung et al.
patent: 5874519 (1999-02-01), Nishimura et al.
M. Panar et al., "Morphology of Poly(p-Phenylene Terephthalamide) Fibers," Journal of Polymer Science: Polymer Physics Ed., vol. 21, pp. 1955-1969 (1983).
L.-S. Li et al., "On the Morphology of Aromatic Polyamide Fibers (Kevlar, Kevlar-49, and PRD-49)," J. Macromol. Sci.-Phys., B 22(2), pp. 269-290 (1983).
Fibres From Synthetic Polymers, Rowland Hill, Ed. Aug. 1953 pp. 382-387.
Edwards Newton
Kansai Research Institute (KRI)
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