Abstract: A carbon film excellent in electromagnetic shielding performance is provided. The carbon film is made of a carbon nanotube assembly and has a fractal dimension of 2.6 or more and 4 or less in a wavenumber range of 0.0001 (1/?) or more and 0.001 (1/?) or less when a scattering profile obtained by performing ultra-small-angle X-ray scattering on at least one surface of the carbon film is fitted to the Beaucage equation, while having a porosity of 80% or more and 95% or less.

Abstract: An elastomer composition contains an elastomer, carbon nanotubes, and a compound A. The compound A is a compound that has a vapor pressure at 25° C. of 1.0 kPa or less and includes an aromatic ring. A Hansen solubility parameter distance R1 between the carbon nanotubes and the compound A is 6.0 MPa1/2 or less, and a Hansen solubility parameter distance R2 between the elastomer and the compound A is larger than R1.

Abstract: Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0.

Abstract: The present disclosure provides a high-pressure hydrogen apparatus gas seal member which is excellent in durability and is capable of sufficiently suppressing an occurrence of a blister fracture. A high-pressure hydrogen apparatus gas seal member of the present disclosure is a high-pressure hydrogen apparatus gas seal member made of a crosslinked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures having an average length of 100 ?m or more and 1000 ?m or less, wherein the fibrous carbon nanostructures have a surface fractal dimension of 2.3 or more and 3.0 or less or a radius of gyration of 50 nm or more and 500 nm or less, and further the fibrous carbon nanostructures has an inner diameter of 4.0 nm or less.

Abstract: A rubber composition includes a silicone rubber and a conductive filler. The content of the conductive filler in the rubber composition is 0.5 to 5 volume %. The conductive filler contains carbon nanotubes having a length of greater than 5 ?m The radius of gyration which is determined by subjecting the rubber composition to ultra-small angle X-ray scattering to obtain a scattering curve, and analyzing the scattering curve with the Beaucage model is 40 nm to 300 nm.

Abstract: Provided is a method of producing a slurry that enables simple production of a slurry in which fibrous carbon nanostructures are favorably dispersed. The method of producing a slurry includes: a mixing step of mixing resin particles having an average particle diameter of at least 1 ?m and not more than 700 ?m, fibrous carbon nanostructures, and a dispersion medium to obtain a mixed liquid; and a dispersing step of subjecting the mixed liquid to dispersion treatment using a wet medialess disperser under conditions in which pressure acting on the mixed liquid (gauge pressure) is 5 MPa or less to obtain a slurry. The fibrous carbon nanostructures preferably include carbon nanotubes.

Abstract: Provided is a composition for a gas seal member that can form a gas seal member for a high-pressure hydrogen device that is capable of sufficiently inhibiting both swelling destruction and blister destruction. The composition for a gas seal member is a composition for a gas seal member used in a high-pressure hydrogen environment and contains an elastomer and fibrous carbon nanostructures. The fibrous carbon nanostructures are contained in a proportion of not less than 1 part by mass and not more than 10 parts by mass per 100 parts by mass of the elastomer. An area fraction S (%) of aggregates of the fibrous carbon nanostructures in a cross-section of the composition for a gas seal member and a volume percentage V (volume %) of the fibrous carbon nanostructures in the composition for a gas seal member satisfy a relationship 0?S/V?2.0.

Abstract: A crosslinked material for an endoscope, containing a fluorinated elastomer and fibrous carbon nanostructures including single-walled carbon nanotubes, in which the amount of the fibrous carbon nanostructures in the crosslinked material is 0.1 parts by mass or more and less than 2.0 parts by mass per 100 parts by mass of the fluorinated elastomer, and a durometer type A hardness at 23° C. measured in accordance with JIS K 6253-3:2012 is 75A or less; an endoscope using the crosslinked material for an endoscope; and a composition for forming the crosslinked material for an endoscope.

Abstract: Provided is a seal material having excellent non-adherence to metal surfaces. The seal material is formed of a cross-linked rubber that is obtained through cross-linking of a cross-linkable rubber composition containing a binary fluororubber, a carbon material, and a polyol cross-linker. The carbon material includes one or more carbon nanotubes. The cross-linked rubber has an adhesion strength of 2 N or less to a metal surface after being heated at 250° C. for 70 hours while in contact with the metal surface.

Abstract: Disclosed is a rubber composition which comprises a rubber, fibrous carbon nanostructures and a filler, wherein, in a state where the filler is dispersed in the rubber composition, the filler is mainly present as aggregates each formed of a plurality of primary particles aggregated with each other, and the aggregates have an average maximum diameter of 100 nm or more and 1,000 nm or less.

Abstract: Provided is a method of producing a composite resin material that has excellent shapeability and enables supply of a shaped product having good properties. The method of producing a composite resin material includes: a mixing step of mixing a fluororesin, fibrous carbon nanostructures, and a dispersion medium to obtain a slurry; and a formation step of removing the dispersion medium from the slurry and forming a particulate composite resin material. The particulate composite resin material has a D50 diameter of at least 20 ?m and not more than 500 ?m and a D90 diameter/D10 diameter value of at least 1.2 and not more than 15. The D10 diameter, D50 diameter, and D90 diameter are particle diameters respectively corresponding to cumulative volumes of 10%, 50%, and 90% calculated from a small particle end of a particle diameter distribution of the particulate composite resin material.

Abstract: Disclosed is a fluorinated elastomer composition which comprises a fluorinated elastomer and fibrous carbon nanostructures, wherein the fibrous carbon nanostructures include single-walled carbon nanotubes, and the fibrous carbon nanostructures are contained in an amount of 0.1 parts by mass or more and less than 5.0 parts by mass per 100 parts by mass of the fluorinated elastomer. Also disclosed is a shaped article formed using the fluorinated elastomer composition.

Abstract: Provided is an uncrosslinked elastomer composition that can form a crosslinked product having an excellent balance of electrical conductivity and hardness. The uncrosslinked elastomer composition contains: an elastomer composition P containing an elastomer and one or more fibrous carbon nanostructures; and a liquid additive Q. When a value of (TC90P?TC10P)/MLP for the elastomer composition P is taken to be A1 and a value of (TC90?TC10)/ML for the uncrosslinked elastomer composition is taken to be A2, a relationship formula X of A2/A1?1.1 is satisfied.

Abstract: Disclosed is a rubber composition which comprises a rubber, fibrous carbon nanostructures and a filler, wherein, in a state where the filler is dispersed in the rubber composition, the filler is mainly present as aggregates each formed of a plurality of primary particles aggregated with each other, and the aggregates have an average maximum diameter of 100 nm or more and 1,000 nm or less.

Abstract: Provided is a composition for a gas seal member that can form a gas seal member capable of sufficiently suppressing both the occurrence of overflow fracture and the occurrence of blister fracture. The disclosed composition for a gas seal member is a composition for a gas seal member that contains an elastomer and a fibrous carbon nanostructure. The fibrous carbon nanostructure includes single-walled carbon nanotubes and the fibrous carbon nanostructure is contained in a proportion of at least 0.1 parts by mass and no greater than 12 parts by mass per 100 parts by mass of elastomer.

Abstract: Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0.

Abstract: Provided is a composition for a gas seal member that can form a gas seal member for a high-pressure hydrogen device that is capable of sufficiently inhibiting both swelling destruction and blister destruction. The composition for a gas seal member is a composition for a gas seal member used in a high-pressure hydrogen environment and contains an elastomer and fibrous carbon nanostructures. The fibrous carbon nanostructures are contained in a proportion of not less than 1 part by mass and not more than 10 parts by mass per 100 parts by mass of the elastomer. An area fraction S (%) of aggregates of the fibrous carbon nanostructures in a cross-section of the composition for a gas seal member and a volume percentage V (volume %) of the fibrous carbon nanostructures in the composition for a gas seal member satisfy a relationship 0?S/V?2.0.

Abstract: Provided is a method of producing a composite resin material that has excellent shapeability and enables supply of a shaped product having good properties. The method of producing a composite resin material includes: a mixing step of mixing a fluororesin, fibrous carbon nanostructures, and a dispersion medium to obtain a slurry; and a formation step of removing the dispersion medium from the slurry and forming a particulate composite resin material. The particulate composite resin material has a D50 diameter of at least 20 ?m and not more than 500 ?m and a D90 diameter/D10 diameter value of at least 1.2 and not more than 15. The D10 diameter, D50 diameter, and D90 diameter are particle diameters respectively corresponding to cumulative volumes of 10%, 50%, and 90% calculated from a small particle end of a particle diameter distribution of the particulate composite resin material.

Abstract: Provided is a composite resin material that enables formation of a shaped product having excellent mechanical strength and sufficiently low surface resistivity. A method of producing the composite resin material includes a step of removing a dispersion medium from a slurry that contains fluororesin particles, fibrous carbon nanostructures, and the dispersion medium, that contains 0.01-0.5 parts by mass of the fibrous carbon nanostructures per 100 parts by mass of the fluororesin particles, and for which an area fraction S (%) of fibrous carbon nanostructure aggregates when the slurry is loaded into a glass slide including an indentation of 0.5 mm in depth and inside of the indentation is observed over a range of 3 mm×2 mm using an optical microscope and a volume percentage V (volume %) of the fibrous carbon nanostructures in solid content of the slurry satisfy a relationship: 3?S/V?30.

Abstract: Provided is a method of producing a slurry that enables simple production of a slurry in which fibrous carbon nanostructures are favorably dispersed. The method of producing a slurry includes: a mixing step of mixing resin particles having an average particle diameter of at least 1 ?m and not more than 700 ?m, fibrous carbon nanostructures, and a dispersion medium to obtain a mixed liquid; and a dispersing step of subjecting the mixed liquid to dispersion treatment using a wet medialess disperser under conditions in which pressure acting on the mixed liquid (gauge pressure) is 5 MPa or less to obtain a slurry. The fibrous carbon nanostructures preferably include carbon nanotubes.