Abstract: An adsorbent and a granulated substance for which reduction in adsorption performance in low humidity environments is suppressed are provided. The adsorbent includes: a porous body mainly composed of silicon dioxide, including a plurality of fine pores, and having a specific surface area of not less than 1 m2/g and not more than 10 m2/g; one of an acid and a base with which inside of the fine pores of the porous body is impregnated to neutralize a target gas to generate a salt; and a hydrophilic fiber held in the porous body.

Abstract: A carbon fiber reinforced composite material includes carbon fiber and a thermosetting resin composition. The thermosetting resin composition is a cured product of a liquid composition that contains unsaturated polyester, a curing agent, a polymerization initiator, and a nanocarbon/nanocellulose complex containing nanocarbon modified by functional a group and nanocellulose. The nanocarbon/nanocellulose complex is dispersed in the thermosetting resin composition. The thermosetting resin composition contains 0.05 to 15% by weight of the nanocarbon/nanocellulose complex. A maximum point stress of the carbon fiber reinforced composite material in a tensile test according to JIS K 7164 is 410 N/mm2 or more. A maximum point stress of the carbon fiber reinforced composite material in a three-point bending test according to JIS K 7171 is 310 N/mm2 or more.

Abstract: [Problem ] The present invention addresses the problem of providing a novelnanocarbon composite which is used to achieve a stable and uniform mechanical strength improvement effect in a carbon fiber-reinforced plastic or carbon fiber-reinforced composite material impregnated with a nanocarbon-containing resin. [Solution] A novel nanocarbon composite containing nanocarbon and nano-cellulose modified with a functional group(s) or a novel nanocarbon composite containing nanocarbon, nano-cellulose modified with a functional group(s), and a affinitive binding agent is constituted by incorporating a resin serving as a matrix in a carbon fiber-reinforced plastic or carbon fiber-reinforced composite material.

Abstract: Electro-conductive fibers comprise synthetic fibers and an electro-conductive layer containing carbon nanotubes and covering a surface of the synthetic fibers, and the coverage of the electro-conductive layer relative to the whole surface of the synthetic fibers is not less than 60% (particularly not less than 90%). The electric resistance value of the electro-conductive fibers ranges from 1×10?2 to 1×1010 ?/cm, and the standard deviation of the logarithm of the electric resistance value is less than 1.0. The thickness of the electro-conductive layer ranges from 0.1 to 5 ?m, and the ratio of the carbon nanotubes may be 0.1 to 50 parts by mass relative to 100 parts by mass of the synthetic fibers. The electro-conductive layer may further contain a binder. The electro-conductive fibers may be produced by immersing the synthetic fibers in a dispersion with vibrating the synthetic fibers to form the electro-conductive layer adhered to the surface of the synthetic fibers.

Abstract: [Means for solving]A graphene oxide sheet which changes to a substance having a graphene structure when reduced, and which is obtainable by dispersing a graphene-containing carbon substance using a dispersant to reduce the size of the aggregate units of the graphene-containing carbon substance, and then oxidizing the graphene-containing carbon substance.

Abstract: An electro-conductive multifilament yarn for an electro-conductive brush that includes an electro-conductive fiber containing a synthetic fiber and a carbon nanotube covering a surface of the fiber. The synthetic fiber may have a single-filament fineness of not more than 30 dtex. The synthetic fiber may have 3 to 6 elongated recesses or grooves extending in a longitudinal direction thereof and have a multi-leaves or cross-section.

Abstract: The disclosed is a redispersible agglomerate of fine carbon fibers, which is obtained by adding the fine carbon fibers and a dispersing agent which shows solid state at least at ordinary temperature (20±10° C.) into an aqueous dispersion medium, and then removing the dispersion medium from a dispersion system where the carbon fibers are isolated individually and dispersed in the dispersion medium; and in which the carbon fibers are got together and solidified in the agglomerate while each carbon fiber maintains its isolated dispersibility; wherein the carbon content is in the range of 0.01-99.5% by weight, the dispersing agent content is in the range of 0.1-99.5% by weight, and the moisture content is in the range of less than.

Abstract: [Means for solving] A graphene oxide sheet which changes to a substance having a graphene structure when reduced, and which is obtainable by dispersing a graphene-containing carbon substance using a dispersant to reduce the size of the aggregate units of the graphene-containing carbon substance, and then oxidizing the graphene-containing carbon substance.

Abstract: An electro-conductive multifilament yarn for forming an electro-conductive brush comprises an electro-conductive fiber containing a synthetic fiber and a carbon nanotube covering a surface of the fiber. The synthetic fiber may have a single-filament fineness of not more than 30 dtex. The synthetic fiber may have 3 to 6 elongated recesses or grooves extending in a longitudinal direction thereof and have a multi-leaves or star-shaped cross-section. The electro-conductive multifilament yarn of the present invention has a high electro-conductivity and may have an electric resistance value of 1×106 to 1×1011 ?/cm at 20° C. Further, the electro-conductivity has a high uniformity; the standard deviation of a logarithm of the electric resistance value may be not more than 1.0.

Abstract: A carbon nanotube sheet of the present invention includes carbon nanotubes and a polymeric material, wherein the carbon nanotubes are present in an isolated state, the axis directions of the carbon nanotubes are aligned m a thickness direction of the carbon nanotube sheet, and the space between the carbon nanotubes is filled with the polymeric material.

Abstract: A method for producing a composite metal material includes preparing a solution containing a surfactant having both hydrophilicity and hydrophobicity, dispersing a nanosized to micro-sized fine carbonaceous substance into a state of being monodispersed in the solution, bringing the solution having the dispersed fine carbonaceous substance into contact with surface of a metal powder particle, drying the metal powder particle to make the fine carbonaceous substance in the monodispersed state adhere to the surface of the metal powder particle via a component of the solution, and thermally decomposing and removing the solution component adhering to the surface of the metal powder particle by heat-treating the metal powder particle either in a hydrogen-containing reducing atmosphere or in a vacuum atmosphere to partially expose the surface of the metal powder particle out of the adhering fine carbonaceous substance, and thus progress diffusion and sintering among the metal powder particles through exposed parts.

Abstract: The present invention provides a process for producing a precursor fiber which can provide a carbon fiber having high strength and high elastic modulus. The process of the present invention comprises a step where an aqueous solution of amphoteric molecule is prepared; a step where carbon nanotube is added to the aqueous solution of the amphoteric molecule so that the carbon nanotube is dispersed therein to prepare a dispersion of carbon nanotube; a step where the carbon nanotube dispersion is mixed with a polyacrylonitrile polymer and rhodanate or zinc chloride to prepare a spinning dope; a step where a coagulated yarn is prepared from the spinning dope by a wet or dry-wet spinning method; and a step where the coagulated yarn is drawn to give a precursor fiber for carbon fiber.

Abstract: Electro-conductive fibers comprise synthetic fibers and an electro-conductive layer containing carbon nanotubes and covering a surface of the synthetic fibers, and the coverage of the electro-conductive layer relative to the whole surface of the synthetic fibers is not less than 60% (particularly not less than 90%). The electric resistance value of the electro-conductive fibers ranges from 1×10?2 to 1×1010 ?/cm, and the standard deviation of the logarithm of the electric resistance value is less than 1.0. The thickness of the electro-conductive layer ranges from 0.1 to 5 ?m, and the ratio of the carbon nanotubes may be 0.1 to 50 parts by mass relative to 100 parts by mass of the synthetic fibers. The electro-conductive layer may further contain a binder. The electro-conductive fibers may be produced by immersing the synthetic fibers in a dispersion with vibrating the synthetic fibers to form the electro-conductive layer adhered to the surface of the synthetic fibers.

Abstract: [Problems] To produce planar heating elements having high exothermic efficiency and provide energy-saving electric carpets, floor heating, wall surface heating appliances and heaters for thawing on roads and/or roofs or antifogging for mirrors. [Means for Solving] To provide a planar heating element produced by applying, to an insulating substrate or the like, an electrically conductive fine carbon fiber film that is fabricated using an aqueous dispersion of fine carbon fibers in which the fine carbon fibers are evenly dispersed in an aqueous solution.

Abstract: The disclosed is a redispersible agglomerate of fine carbon fibers, which is obtained by adding the fine carbon fibers and a dispersing agent which shows solid state at least at ordinary temperature (20±10° C.) into an aqueous dispersion medium, and then removing the dispersion medium from a dispersion system where the carbon fibers are isolated individually and dispersed in the dispersion medium; and in which the carbon fibers are got together and solidified in the agglomerate while each carbon fiber maintains its isolated dispersibility; wherein the carbon content is in the range of 0.01-99.5% by weight, the dispersing agent content is in the range of 0.1-99.5% by weight, and the moisture content is in the range of less than.

Abstract: A method for producing a composite metal material includes preparing a solution containing a surfactant having both hydrophilicity and hydrophobicity, dispersing a nanosized to micro-sized fine carbonaceous substance into a state of being monodispersed in the solution, bringing the solution having the dispersed fine carbonaceous substance into contact with surface of a metal powder particle, drying the metal powder particle to make the fine carbonaceous substance in the monodispersed state adhere to the surface of the metal powder particle via a component of the solution, and thermally decomposing and removing the solution component adhering to the surface of the metal powder particle by heat-treating the metal powder particle either in a hydrogen-containing reducing atmosphere or in a vacuum atmosphere to partially expose the surface of the metal powder particle out of the adhering fine carbonaceous substance, and thus progress diffusion and sintering among the metal powder particles through exposed parts.

Abstract: Disclosed is a means for enabling fine carbons, which include from nano-sized to micro-sized carbons, to disperse uniformly. Specifically disclosed is a fine carbon dispersion which is produced by using a liquid fine carbon dispersion medium containing fine carbons including from nano-sized to micro-sized carbons and a dispersing agent for fine carbons.

Abstract: A method for the separation of hydrogen ion, characterized in that a substance having a conjugate base (A−) of an acid (HA) as a functional group is used as a stationary phase, and an electrolyte containing a cation having a larger ion exchanging force than that of hydrogen ion is used as an eluent. The method allows the selective separation of hydrogen ion and the quantitative analysis thereof with high precision.

Abstract: A method for separating a hydroxide ion, characterized in that a hydroxide ion (OH−) in an aqueous solution is separated by a chromatograph. The method allows the separation and the measurement with high precision of a hydroxide ion which has not been achieved by a conventional pH titration method and pH meter method, and further allows the selective extraction and concentration thereof.

Abstract: A method for the separation of hydrogen ion, characterized in that a substance having a conjugate base (A−) of an acid (HA) as a functional group is used as a stationary phase, and an electrolyte containing a cation having a larger ion exchanging force than that of hydrogen ion is used as an eluent. The method allows the selective separation of hydrogen ion and the quantitative analysis thereof with high precision.