Abstract: A method for molding a ceramic material includes: mixing a ceramic powder, a resin, a curing agent and a solvent to obtain a raw material slurry for a ceramic material; injecting the raw material slurry into an elastic container; curing the resin in the raw material slurry injected into the elastic container to form a molded body having a desired shape; and demolding the molded body from the elastic container.

Abstract: The present invention relates to a light-transmitting ceramic sintered body which contains air voids having pore diameters of 1 ?m or more but less than 5 ?m at a density within the range of from 10 voids/mm3 to 4,000 voids/mm3 (inclusive), while having a closed porosity of from 0.01% by volume to 1.05% by volume (inclusive). With respect to this light-transmitting ceramic sintered body, a test piece having a thickness of 1.90 mm has an average transmittance of 70% or more in the visible spectrum wavelength range of 500-900 nm, and the test piece having a thickness of 1.90 mm has a sharpness of 60% or more at a comb width of 0.5 mm.

Abstract: The present invention relates to a method of producing a SiC—Si composite component. The method includes preparing a first molded body containing SiC particles by a 3D printing method, wherein the first molded body has a first average pore diameter M1; forming a second molded body, in which the first molded body and a dispersion containing carbon particles are brought into contact so that the pores are impregnated with the carbon particles, wherein the carbon particles have a secondary particle having an average particle diameter M2, and the carbon particles satisfy the following formula: M2?M1/10; and forming a SiC—Si composite component by carrying out that the second molded body is impregnated with a metallic Si and is reactively sintered; wherein the content of Si is in the range of 5% by mass to 40% by mass in the SiC—Si composite component.

Abstract: The present invention relates to a light-transmitting ceramic sintered body which contains air voids having pore diameters of 1 ?m or more but less than 5 ?m at a density within the range of from 10 voids/mm3 to 4,000 voids/mm3 (inclusive), while having a closed porosity of from 0.01% by volume to 1.05% by volume (inclusive). With respect to this light-transmitting ceramic sintered body, a test piece having a thickness of 1.90 mm has an average transmittance of 70% or more in the visible spectrum wavelength range of 500-900 nm, and the test piece having a thickness of 1.90 mm has a sharpness of 60% or more at a comb width of 0.5 mm.

Abstract: A method for molding a ceramic material includes: mixing a ceramic powder, a resin, a curing agent and a solvent to obtain a raw material slurry for a ceramic material; injecting the raw material slurry into an elastic container; curing the resin in the raw material slurry injected into the elastic container to form a molded body having a desired shape; and demolding the molded body from the elastic container.

Abstract: To provide a tin oxide refractory which prevents volatilization of SnO2 in a high temperature zone from an early stage and which also has high erosion resistance to glass. A tin oxide refractory comprising SnO2, SiO2 and ZrO2 as essential components, wherein the total content of SnO2, SiO2 and ZrO2 in the tin oxide refractory is at least 70 mass %, and, based on the total content of SnO2, SiO2 and ZrO2, the content of SnO2 is from 32 to 98 mol %, the content of SiO2 is from 1 to 35 mol % and the content of ZrO2 is from 1 to 35 mol %.

Abstract: To provide a powder composition to obtain a tin oxide monolithic refractory which prevents volatilization of SnO2 in a high temperature zone from an early stage and which also has high erosion resistance to slag. As a refractory mixture, a powder composition for tin oxide monolithic refractory comprising SnO2, ZrO2 and SiO2 as essential components, wherein the total content of SnO2, ZrO2 and SiO2 in the refractory mixture is at least 70 mass %, and, based on the total content of SnO2, ZrO2 and SiO2, the content of SnO2 is from 55 to 98 mol %, the content of ZrO2 is from 1 to 30 mol % and the content of SiO2 is from 1 to 15 mol %.

Abstract: To provide a tin oxide refractory which prevents volatilization of SnO2 in a high temperature zone from an early stage and which also has high erosion resistance to glass. A tin oxide refractory comprising SnO2, SiO2 and ZrO2 as essential components, wherein the total content of SnO2, SiO2 and ZrO2 in the tin oxide refractory is at least 70 mass %, and, based on the total content of SnO2, SiO2 and ZrO2, the content of SnO2 is from 32 to 98 mol %, the content of SiO2 is from 1 to 35 mol % and the content of ZrO2 is from 1 to 35 mol %.

Abstract: A process for producing an electrode for an electric double layer capacitor, in which water is used as a forming auxiliary agent and kneading an pulverizing steps are omitted to improve production efficiency, and a process for producing an electric double layer capacitor employing such a electrode, are provided. In a first mixing step, an activated carbon and a carbon black are mixed by a grinder containing a grinding medium. As the grinder containing a grinding medium used in this first mixing step, a commonly used ball mill can be used. In the second mixing step, a mixture is taken out from the grinder containing a grinding medium of the first mixing step, and moved into a second mixer prepared separately. Then, polytetrafluoroethylene as a binder and water as a liquid lubricant are added and the materials are mixed again. Thereafter, a calendar forming is carried out.

Abstract: A process for producing an electrode for an electric double layer capacitor, in which water is used as a forming auxiliary agent and kneading an pulverizing steps are omitted to improve production efficiency, and a process for producing an electric double layer capacitor employing such a electrode, are provided. In a first mixing step, an activated carbon and a carbon black are mixed by a grinder containing a grinding medium. As the grinder containing a grinding medium used in this first mixing step, a commonly used ball mill can be used. In the second mixing step, a mixture is taken out from the grinder containing a grinding medium of the first mixing step, and moved into a second mixer prepared separately. Then, polytetrafluoroethylene as a binder and water as a liquid lubricant are added and the materials are mixed again. Thereafter, a calendar forming is carried out.

Abstract: An electric double layer capacitor includes, contained in a casing, an electrolyte and positive and negative electrodes each containing carbon black, to form an electric double layer at the interface with the electrolyte, and a separator interposed between the positive electrode and the negative electrode. At least one electrode of the positive electrode and the negative electrode has protruded portions or bent portions formed continuously in the height direction against the bottom face of the casing. Further, a space due to the height of the protruded portions or the bent portions is formed between the at least one electrode and the separator.

Abstract: An electric double layer capacitor includes, contained in a casing, an electrolyte, a positive electrode and a negative electrode each being an electrode containing carbon black, to form an electric double layer at the interface with the electrolyte, and a separator interposed between the positive electrode and the negative electrode. At least one electrode of the positive electrode and the negative electrode has protruded portions or bent portions formed continuously in the height direction against the bottom face of the casing. Further, a space due to the height of the protruded portions or the bent portions is formed between the at least one electrode and the separator.

Abstract: A carbonaceous material having a total pore volume of from 0.5 to 1.5 cm3/g per unit mass, a volume of micropores having diameters of from 10 to 20 ? of from 10 to 45% based on the total pore volume, a volume of mesopores having diameters of from 20 to 200 ? of from 35 to 65% based on the total pore volume, a volume of macropores having diameters exceeding 200 ? of not more than 15% based on the total pore volume, and a specific surface area of from 1,000 to 2,500 m2/g. The carbonaceous material is incorporated into an electric double layer capacitor to provide increased capacitance.

Abstract: A process for producing an electric double layer capacitor, which comprises a step of preparing a positive electrode and a negative electrode, each being a carbonaceous electrode containing as the main component a carbon material having a specific surface area of from 100 to 2,500 m2/g, a step of forming an element comprising the positive electrode and the negative electrode and a separator having a thickness of at most 60 &mgr;m interposed therebetween, and a step of impregnating the element with a non-aqueous electrolyte, wherein the copper content in the positive electrode before being impregnated with the non-aqueous electrolyte is at most 1 ppm.

Abstract: A carbonaceous material which has a total pore volume of from 0.3 to 2.0 cm3/g per unit mass, a volume of micropores having diameters of from 10 to 20 Å of from 10 to 60% based on the total pore volume, a volume of mesopores having diameters of from 20 to 200 Å of from 20 to 70% based on the total pore volume, a volume of macropores having diameters exceeding 200 Å of not more than 20% based on the total pore volume, and a specific surface area of from 1,000 to 2,500 m2/g.

Abstract: An electric double layer capacitor having contained in a casing an electrolyte, a positive electrode and a negative electrode each being an electrode containing carbon black, to form an electric double layer at the interface with the electrolyte, and a separator interposed between the positive electrode and the negative electrode, wherein at least one electrode of the positive electrode and the negative electrode has protruded portions or bent portions formed continuously in the height direction against the bottom face of the casing, and a space due to the height of the protruded portions or the bent portions is formed between said at least one electrode and the separator.

Abstract: A process for producing an electrode assembly for an electric double layer capacitor having an electrode layer comprising a carbonaceous material and a first binder, formed on at least one side of a metal current collector foil, which comprises the following steps A to D: Step A: a step of coating an electroconductive adhesive comprising an electroconductive powder, a second binder and a solvent, on at least one side of a metal current collector foil; Step B: a step of drying the metal current collector foil coated with the electroconductive adhesive to remove at least a part of the solvent and to form an electroconductive bonding layer; Step C: a step of preparing a formed product of sheet shape comprising the carbonaceous material and the first binder; and Step D: a step of placing the formed product of sheet shape on the electroconductive bonding layer to form a laminate comprising the metal current collector foil and the formed product of sheet shape, and rolling the laminate to reduce the thickness o

Abstract: An activated carbon for an electric double layer capacitor electrode, which comprises a stacking structure having 2 layers or less of in a proportion stacking of from 25 to 80% and a stacking structure having 5 layers or more in a proportion of from 2 to 30% in the distribution of a stacking structure as obtained by analysis of the X-ray diffraction pattern of (002) plane, and which has a specific surface area of from 500 to 2,800 m2/g and a total pore volume of from 0.5 to 1.8 cm3/g.

Abstract: A process for producing a carbon material for an electric double layer capacitor electrode, including activating a graphitizable carbon or a graphitizable carbon source to have its pore volume in the range of 0.6 to 1.5 cm3/g, and imparting mechanical impact force to the graphitizable carbon or the graphitizable carbon source activated in the activating step to reduce the pore volume to at most 75% of that before the mechanical impact force is imparted.

Abstract: An activated carbon for an electric double layer capacitor electrode, which comprises a stacking structure having 2 layers or less of in a proportion stacking of from 25 to 80% and a stacking structure having 5 layers or more in a proportion of from 2 to 30% in the distribution of a stacking structure as obtained by analysis of the X-ray diffraction pattern of (002) plane, and which has a specific surface area of from 500 to 2,800 m2/g and a total pore volume of from 0.5 to 1.8 cm3/g.