Disclosed is a treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production. The treatment agent contains a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol. Also disclosed is a flame-resistant fiber nonwoven fabric or carbon fiber nonwoven fabric that includes the treatment agent adhered thereto.

Disclosed is a treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production. The treatment agent contains a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol. Also disclosed is a flame-resistant fiber nonwoven fabric or carbon fiber nonwoven fabric that includes the treatment agent adhered thereto.

A method of manufacturing a composite product includes recovering a wet composite waste from at least one of the manufacturing process or an end-of-life product. The wet composite waste includes a first resin and a plurality of first fibers that are bound together with the first resin. The method also includes grinding the wet composite waste after recovering the wet composite waste. The method also includes mixing the wet composite waste with the second resin into a homogeneous mixture and placing the homogeneous mixture into a cavity. The method includes curing the second resin of the homogeneous mixture such that the homogenous mixture hardens to form a composite product that includes the first resin, the second resin, and the plurality of first fibers.

A method of manufacturing a composite product includes recovering a wet composite waste from at least one of the manufacturing process or an end-of-life product. The wet composite waste includes a first resin and a plurality of first fibers that are bound together with the first resin. The method also includes grinding the wet composite waste after recovering the wet composite waste. The method also includes mixing the wet composite waste with the second resin into a homogeneous mixture and placing the homogeneous mixture into a cavity. The method includes curing the second resin of the homogeneous mixture such that the homogenous mixture hardens to form a composite product that includes the first resin, the second resin, and the plurality of first fibers.

Disclosed is a chute carding machine used in a recycled carbon fiber nonwoven fabric manufacturing system, wherein the chute carding machine includes a main chamber oriented in a vertical direction and having an inner space formed therein, a mixed raw material introduction unit is installed at the uppermost part of an inner space of the main chamber, a first carding unit is installed under the mixed raw material introduction unit, a second carding unit is installed under the first carding unit, and a web shaping unit is installed under the second carding unit.

Disclosed is a chute carding machine used in a recycled carbon fiber nonwoven fabric manufacturing system, wherein the chute carding machine includes a main chamber oriented in a vertical direction and having an inner space formed therein, a mixed raw material introduction unit is installed at the uppermost part of an inner space of the main chamber, a first carding unit is installed under the mixed raw material introduction unit, a second carding unit is installed under the first carding unit, and a web shaping unit is installed under the second carding unit.

The present invention relates to a method for producing a gas diffusion layer, wherein nonwovens made of carbon fibers or carbon fiber precursors are subjected to entanglement with water-containing fluid jets of a certain water quality. The invention also relates to the gas diffusion layer obtainable according to the method and to a fuel cell that contains such a gas diffusion layer.

The present invention relates to a method for producing a gas diffusion layer, wherein nonwovens made of carbon fibers or carbon fiber precursors are subjected to entanglement with water-containing fluid jets of a certain water quality. The invention also relates to the gas diffusion layer obtainable according to the method and to a fuel cell that contains such a gas diffusion layer.

This carbon sheet includes at least a carbon fiber structure formed from carbon fibers, a binding agent, and graphite particles, wherein in a pore diameter distribution of the carbon sheet, the ratio of the volume of a second peak present in a region having a pore diameter of 0.5 m to 3 m to the volume of a first peak present in a region having a pore diameter of 20 m to 100 m is 0.06 to 0.50. A carbon sheet which suppresses dry-up and achieves both conductivity and retention of moisture is provided in order to exhibit high power generation performance in a solid polymer fuel cell.

This carbon sheet includes at least a carbon fiber structure formed from carbon fibers, a binding agent, and graphite particles, wherein in a pore diameter distribution of the carbon sheet, the ratio of the volume of a second peak present in a region having a pore diameter of 0.5 m to 3 m to the volume of a first peak present in a region having a pore diameter of 20 m to 100 m is 0.06 to 0.50. A carbon sheet which suppresses dry-up and achieves both conductivity and retention of moisture is provided in order to exhibit high power generation performance in a solid polymer fuel cell.