Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: holding the raw fiber cloth which has been dried to such an extent that the moisture content becomes less than 25% by restraining the cloth in a vertical or transverse direction; heating the cloth continuously to a temperature ranging from 250 to 450˚C at a heating rate of 50 to 200˚C/hour under an oxidizing atmosphere having an oxygen partial pressure of 50 mmHgor higher and subsequently to a final heating temperature ranging from 750 to 1000˚C at a heating rate of 50 to 200˚C/hour under a non-oxidizing atmosphere having an oxygen partial pressure of less than 50 mmHg in a heating furnace; and heating the cloth by retaining the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent electromagnetic wave absorption ability, electric or dielectric property, heat resistance and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation

Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: rolling-up the raw fiber cloth and placing a roll of the cloth in a heat-resistant cylindrical container so that the roll of the raw fabric cloth is surrounded by the cylindrical container in a semi-hermetic state under an oxidizing atmosphere; continuously heating the heat-resistant cylindrical container having the roll of the raw fiber cloth contained therein in a heating furnace to a final heating temperature ranging from 750 to 1000˚C; and retaining the roll of the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent electromagnetic wave absorption ability, electric or dielectric property, heat resistance and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation

Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: holding the raw fiber cloth which has been dried to such an extent that the moisture content becomes less than 25% by restraining the cloth in a vertical or transverse direction; heating the cloth continuously to a temperature ranging from 250 to 450˚C at a heating rate of 50 to 200˚C/hour under an oxidizing atmosphere having an oxygen partial pressure of 50 mmHg or higher and subsequently to a final heating temperature ranging from 1000 to 1600˚C at a heating rate of 50 to 200˚C/hour under a non-oxidizing atmosphere having an oxygen partial pressure of less than 50 mmHg in a heating furnace; and heating the cloth by retaining the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent electrical conduction property, heat resistance, electromagnetic wave absorption property and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation

Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: holding the raw fiber cloth which has been dried to such an extent that the moisture content becomes less than 25% by restraining the cloth in a vertical or transverse direction; heating the cloth continuously to a temperature ranging from 250 to 350˚C at a heating rate of 50 to 200˚C/hour under an oxidizing atmosphere having an oxygen partial pressure of 50 mmHg or higher and subsequently to a final heating temperature ranging from 400 to 750˚C at a heating rate of 50 to 200˚C/hour under a non-oxidizing atmosphere having an oxygen partial pressure of less than 50 mmHg in a heating furnace; and heating the cloth by retaining the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent offensive odor adsorption property, insulation property, heat resistance and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation

Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: rolling-up the raw fiber cloth and placing a roll of the cloth in a heat-resistant cylindrical container so that the roll of the raw fabric cloth is surrounded by the cylindrical container in a semi-hermetic state under an oxidizing atmosphere; continuously heating the heat-resistant cylindrical container having the roll of the raw fiber cloth contained therein in a heating furnace to a final heating temperature ranging from 400 to 750˚C; and retaining the roll of the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent offensive odor adsorption property, insulation property, heat resistance and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation

Abrégé

Disclosed is a method for producing a carbonized fiber cloth by carbonizing a raw fiber cloth under heating, wherein the raw fiber cloth is a woven fabric, a knitted fabric or a woven and knitted fabric composed of a cellulose fiber yarn. The method comprises the steps of: rolling-up the raw fiber cloth and placing a roll of the cloth in a heat-resistant cylindrical container so that the roll of the raw fabric cloth is surrounded by the cylindrical container in a semi-hermetic state under an oxidizing atmosphere; continuously heating the heat-resistant cylindrical container having the roll of the raw fiber cloth contained therein in a heating furnace to a final heating temperature ranging from 1000 to 1600˚C; and retaining the roll of the cloth at the final heating temperature for a predetermined time period. The method enables to produce a carbonized cloth having excellent electrical conduction property, heat resistance, electromagnetic wave absorption property and the like and also having excellent mechanical strength and flexibility in a relatively simple and economically advantageous manner.

Classes IPC  ?

• D01F 9/16 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits d'origine végétale ou de leurs dérivés, p. ex. à partir de l'acétate de cellulose
• D06C 7/04 - Carbonisage ou oxydation