Abstract:
A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath. Further, a drawing angle of single fibers formed by the single fibers and the spinneret surface of the spinneret is in a range from 83° to 87°, the single fibers being fibers discharged from the outermost spinning holes located in the short side direction of the spinneret and running to the fiber bundle diverting guide provided in the coagulation bath.
Abstract:
The object of the present invention is to provide carbon fibers with high tensile strength as a resin impregnated strand even if the single filaments constituting the carbon fibers are thick. The carbon fibers of the present invention consisting of a plurality of single filaments are characterized by satisfying the following relation: where sigma is the tensile strength of said carbon fibers as a resin impregnated strand (in GPa) and d is the average diameter of said single filaments (in mu m). The carbon fibers can be preferably used as a material for forming energy-related apparatuses such as CNG tanks, fly wheels, wind mills and turbine blades, a material for reinforcing structural members of roads, bridge piers, etc., and also a material for forming or reinforcing architectural members such as timber and curtain walls.
Abstract:
A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath. Further, a drawing angle of single fibers formed by the single fibers and the spinneret surface of the spinneret is in a range from 83° to 87°, the single fibers being fibers discharged from the outermost spinning holes located in the short side direction of the spinneret and running to the fiber bundle diverting guide provided in the coagulation bath.
Abstract:
The object of the present invention is to provide carbon fibers with high tensile strength as a resin impregnated strand even if the single filaments constituting the carbon fibers are thick. The carbon fibers of the present invention consisting of a plurality of single filaments are characterized by satisfying the following relation: where sigma is the tensile strength of said carbon fibers as a resin impregnated strand (in GPa) and d is the average diameter of said single filaments (in mu m). The carbon fibers can be preferably used as a material for forming energy-related apparatuses such as CNG tanks, fly wheels, wind mills and turbine blades, a material for reinforcing structural members of roads, bridge piers, etc., and also a material for forming or reinforcing architectural members such as timber and curtain walls.
Abstract:
Conjunto de hilado para el hilado semihúmedo comprendiendo una caja de hilera, un conducto de solución bruta de hilado formado dentro de la caja de hilera, un orificio de alimentación de solución de hilado bruta formada en la caja de hilera, para alimentar la solución de hilado bruta en el conducto de solución bruta de hilado, y una hilera colocada en la caja de hilera y que tiene numerosos orificios de hilado dispuestos a intervalos para descargar la solución bruta de hilado de la salida de solución bruta de hilado, donde la superficie externa de la hilera se enfrenta a la superficie líquida de un líquido de coagulación que pasa por una fase gaseosa, y donde el número de orificios de hilado es de 6000 o más y cociente de aspecto Ra de una hilera de orificios de hilado es 2,5 o más, en la cual el cociente de aspecto Ra se define con la fórmula Ra = A2/B2, en la cual B2 es la longitud del segmento lineal más corto de entre los segmentos lineales obtenidos cuando las líneas rectas que pasan por el centro de la superficie de hilera atraviesan la zona de orificios de hilado y A2 es la longitud del segmento lineal más largo de entre los segmentos lineales obtenidos cuando las líneas derechas perpendiculares al segmento lineal más corto atraviesan la región de orificios de hilado, y donde la zona de orificios de hilado es una cara rodeada por una línea de contorno trazada empalmando los orificios de hilado situados sobre el lado más exterior de la hilera de orificios de hilado de entre los numerosos orificios de hilado ordenados en la superficie de hilera.
Abstract:
The object of the present invention is to provide carbon fibers with high tensile strength as a resin impregnated strand even if the single filaments constituting the carbon fibers are thick. The carbon fibers of the present invention consisting of a plurality of single filaments are characterized by satisfying the following relation: where sigma is the tensile strength of said carbon fibers as a resin impregnated strand (in GPa) and d is the average diameter of said single filaments (in mu m). The carbon fibers can be preferably used as a material for forming energy-related apparatuses such as CNG tanks, fly wheels, wind mills and turbine blades, a material for reinforcing structural members of roads, bridge piers, etc., and also a material for forming or reinforcing architectural members such as timber and curtain walls.
Abstract:
The object of the present invention is to provide carbon fibers with high tensile strength as a resin impregnated strand even if the single filaments constituting the carbon fibers are thick. The carbon fibers of the present invention consisting of a plurality of single filaments are characterized by satisfying the following relation: where sigma is the tensile strength of said carbon fibers as a resin impregnated strand (in GPa) and d is the average diameter of said single filaments (in mu m). The carbon fibers can be preferably used as a material for forming energy-related apparatuses such as CNG tanks, fly wheels, wind mills and turbine blades, a material for reinforcing structural members of roads, bridge piers, etc., and also a material for forming or reinforcing architectural members such as timber and curtain walls.
Abstract:
A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath. Further, a drawing angle of single fibers formed by the single fibers and the spinneret surface of the spinneret is in a range from 83° to 87°, the single fibers being fibers discharged from the outermost spinning holes located in the short side direction of the spinneret and running to the fiber bundle diverting guide provided in the coagulation bath.
Abstract:
Carbon fiber of which the tensile strength of resin-impregnated strand is high even when the thickness of each monofilament constituting the carbon fiber is large. This carbon fiber is characterized in that it comprises a plurality of monofilaments, and satisfies the relation sigma >/= 11.1 - 0.75 d, where d (unit: mu m) represents an average diameter of the monofilaments; and sigma (unit: GPa) the tensile strength of the resin-impregnated strand of the carbon fiber. This carbon fiber is preferably used as a material for forming energy-related equipment and parts, such as CNG tanks, flywheels, windmills and turbine blades, as a reinforcing material for structural equipment and parts, such as roads and bridges, and as a building and reinforcing material for a constructional material, such as lumbers and curtain walls.