Abstract: A fibrous carbon nanostructure dispersion liquid having excellent dispersibility of fibrous carbon nanostructures is provided. A fibrous carbon nanostructure dispersion liquid comprises: fibrous carbon nanostructures with a tap density of 0.024 g/cm3 or less; and a solvent.

Abstract: Disclosed is a silicone rubber composition and a vulcanized product thereof, which show high levels of flexibility and electrical conductivity at the same time. The disclosed silicone rubber composition comprises a silicone rubber and fibrous carbon nanostructures including carbon nanotubes, wherein the fibrous carbon nanostructures exhibit a convex upward shape in a t-plot obtained from an adsorption isotherm. The disclosed vulcanized product is obtainable by vulcanization of the silicone rubber composition.

Abstract: A technique of suppressing a decrease in dispersibility of nanostructures in a nanostructure dispersion liquid that is stored or transported after production is provided. A nanostructure dispersion liquid-containing container is formed by filling an airtight container with a nanostructure dispersion liquid containing nanostructures and a dispersion medium. The nanostructures include at least one selected from the group consisting of nanocarbons, nanofibers, and nanowires, and a filling rate of the nanostructure dispersion liquid is 97 vol % or more.

Abstract: Provided are a method of efficiently producing a fibrous carbon nanostructure dispersion liquid having high dispersibility, and a fibrous carbon nanostructure dispersion liquid having high dispersibility. A production method for a fibrous carbon nanostructure dispersion liquid comprises a step of performing continuous centrifugal separation on a solution containing fibrous carbon nanostructures and a solvent.

Abstract: A fibrous carbon nanostructure dispersion liquid having excellent dispersibility of fibrous carbon nanostructures is provided. A fibrous carbon nanostructure dispersion liquid comprises: fibrous carbon nanostructures with a tap density of 0.024 g/cm3 or less; and a solvent.

Abstract: An electrically conductive composition of the present invention contains an expanded graphite, carbon nanotubes, and a polymer compound. An amount of the expanded graphite to be contained is not less than 30 parts by weight and not more than 70 parts by weight with respect to 100 parts by weight of a total amount of the expanded graphite and the polymer compound. An amount of the carbon nanotubes to be contained is not less than 0.5 part by weight and not more than 10 parts by weight with respect to 100 parts by weight of the total amount of the expanded graphite and the polymer compound.

Abstract: Provided is a latex composition consists of a latex including a polymer having a tetrahydrofuran-insoluble component content of at least 5 mass % and no greater than 75 mass %; carbon nanotubes having an average diameter Av and a diameter distribution 3? satisfying a relationship 0.60>3?/Av>0.20; and an additive selected from the group consisting of a dispersant, a cross-linking agent, a plasticizer, an antioxidant, a heat stabilizer, a light stabilizer, an ultraviolet absorber, a pigment, a colorant, a foaming agent, a flame retardant, a lubricant, a softener, a tackifier, a mold release agent, a deodorant, and a perfume. The carbon nanotubes have a specific surface area of at least 600 m2/g, and in a Raman spectrum of the carbon nanotubes, a ratio of G band peak intensity relative to D band peak intensity (G/D ratio) is at least 1 and no greater than 20.

Abstract: Provided is a method for efficiently producing a carbon nanotube dispersion liquid in which less-damaged carbon nanotubes are highly dispersed. The method for producing a carbon nanotube dispersion liquid includes: (A) obtaining a carbon nanotube dispersion liquid by applying a shear force to a coarse dispersion liquid that includes carbon nanotubes having a specific surface area of 600 m2/g or more to whereby disperse the carbon nanotubes, wherein the step (A) includes at least one of applying a back pressure to the carbon nanotube dispersion liquid and cooling the carbon nanotube dispersion liquid.

Abstract: A technique of suppressing a decrease in dispersibility of nanostructures in a nanostructure dispersion liquid that is stored or transported after production is provided. A nanostructure dispersion liquid-containing container is formed by filling an airtight container with a nanostructure dispersion liquid containing nanostructures and a dispersion medium. The nanostructures include at least one selected from the group consisting of nanocarbons, nanofibers, and nanowires, and a filling rate of the nanostructure dispersion liquid is 97 vol % or more.

Abstract: Provided is a latex composition including a latex that includes a polymer having a tetrahydrofuran-insoluble component content of at least 1 mass % and no greater than 75 mass % and carbon nanotubes that have an average diameter (Av) and a diameter distribution (3?) satisfying a relationship 0.60>3?/Av>0.20. A composite material and a conductive formed product obtainable using the latex composition exhibit superior conductivity.

Abstract: Provided is a method for efficiently producing a carbon nanotube (CNT) dispersion liquid of highly dispersed CNTs while also suppressing damage to the CNTs. The method for producing a carbon nanotube dispersion liquid includes a dispersing step that includes at least one cycle of dispersing treatment in which pressure is applied to a coarse dispersion liquid containing carbon nanotubes and a dispersion medium, the coarse dispersion liquid is fed under pressure, and shear force is applied to the coarse dispersion liquid such as to disperse the carbon nanotubes. A plurality of repetitions of the dispersing step are performed while altering the pressure that is applied to the coarse dispersion liquid. In at least one instance, the pressure applied to the coarse dispersion liquid is altered by at least 10 MPa between consecutive repetitions of the dispersing step.

Abstract: Disclosed is a silicone rubber composition and a vulcanized product thereof, which show high levels of flexibility and electrical conductivity at the same time. The disclosed silicone rubber composition comprises a silicone rubber and fibrous carbon nanostructures including carbon nanotubes, wherein the fibrous carbon nanostructures exhibit a convex upward shape in a t-plot obtained from an adsorption isotherm. The disclosed vulcanized product is obtainable by vulcanization of the silicone rubber composition.

Abstract: A method of the present invention for producing a carbon nanotube includes: a dispersing step of dispersing a carbon nanotube in a solvent by carrying out a dispersion treatment that brings about a cavitation effect, the carbon nanotube having an average diameter (Av) and a diameter distribution (3?) that satisfy 0.60>3?/Av>0.20; and a mixing step of mixing carbon nanotube slurry obtained in the dispersing step with latex.

Abstract: Provided is a method for efficiently producing a carbon nanotube (CNT) dispersion liquid of highly dispersed CNTs while also suppressing damage to the CNTs. The method for producing a carbon nanotube dispersion liquid includes a dispersing step that includes at least one cycle of dispersing treatment in which pressure is applied to a coarse dispersion liquid containing carbon nanotubes and a dispersion medium, the coarse dispersion liquid is fed under pressure, and shear force is applied to the coarse dispersion liquid such as to disperse the carbon nanotubes. A plurality of repetitions of the dispersing step are performed while altering the pressure that is applied to the coarse dispersion liquid. In at least one instance, the pressure applied to the coarse dispersion liquid is altered by at least 10 MPa between consecutive repetitions of the dispersing step.

Abstract: A rubber composition having extremely high electrical conductivity is provided. The rubber composition contains nitrile rubber (A) having an ?,?-ethylenic unsaturated nitrile monomer unit and an iodine value of 100 or lower, and carbon nanotubes (B) having the average diameter (Av) and diameter distribution (3?) that satisfy the following relational expression: 0.60>3?/Av>0.20.

Abstract: Provided is a latex composition including a latex that includes a polymer having a tetrahydrofuran-insoluble component content of at least 1 mass % and no greater than 75 mass % and carbon nanotubes that have an average diameter (Av) and a diameter distribution (3?) satisfying a relationship 0.60>3?/Av>0.20. A composite material and a conductive formed product obtainable using the latex composition exhibit superior conductivity.

Abstract: Provided is a method for efficiently producing a carbon nanotube dispersion liquid in which less-damaged carbon nanotubes are highly dispersed. The method for producing a carbon nanotube dispersion liquid includes: (A) obtaining a carbon nanotube dispersion liquid by applying a shear force to a coarse dispersion liquid that includes carbon nanotubes having a specific surface area of 600 m2/g or more to whereby disperse the carbon nanotubes, wherein the step (A) includes at least one of applying a back pressure to the carbon nanotube dispersion liquid and cooling the carbon nanotube dispersion liquid.

Abstract: A rubber composition having extremely high electrical conductivity is provided. The rubber composition contains nitrile rubber (A) having an ?,?-ethylenic unsaturated nitrile monomer unit and an iodine value of 100 or lower, and carbon nanotubes (B) having the average diameter (Av) and diameter distribution (3?) that satisfy the following relational expression: 0.60>3?/Av>0.20.

Abstract: An electrically conductive composition of the present invention contains an expanded graphite, carbon nanotubes, and a polymer compound. An amount of the expanded graphite to be contained is not less than 30 parts by weight and not more than 70 parts by weight with respect to 100 parts by weight of a total amount of the expanded graphite and the polymer compound. An amount of the carbon nanotubes to be contained is not less than 0.5 part by weight and not more than 10 parts by weight with respect to 100 parts by weight of the total amount of the expanded graphite and the polymer compound.

Abstract: A method of the present invention for producing a carbon nanotube includes: a dispersing step of dispersing a carbon nanotube in a solvent by carrying out a dispersion treatment that brings about a cavitation effect, the carbon nanotube having an average diameter (Av) and a diameter distribution (3?) that satisfy 0.60>3?/Av>0.20; and a mixing step of mixing carbon nanotube slurry obtained in the dispersing step with latex.