Patent application number | Description | Published |
20090005240 | CERAMIC STRUCTURE AND PROCESS FOR PRODUCING THE SAME - There is disclosed a ceramic structure which comprises a material having a controlled pore distribution and including cordierite as the main crystal phase. In the pore distribution, the volume of pores having pore diameters smaller than 20 μm accounts for 15% or less of the total pore volume, and the volume of pores having pore diameters of 20 to 100 μm accounts for 70% or more of the total pore volume. This ceramic structure is suitable for realizing a ceramic catalyst body which has excellent purification efficiency, is reduced in pressure loss, and is mountable even in a limited space. | 01-01-2009 |
20090011919 | PROCESS FOR PRODUCING HONEYCOMB STRUCTURE - A process for producing a honeycomb structure by obtaining clay from a cordierite-forming raw material containing an alumina source, a silica source, and a magnesia source; and forming the clay into a honeycomb shape, wherein a material having, in its volume particle size distribution, a 50 volume % particle size (V50) [μm] of 1 to 25 μm is used, as each of alumina source, silica source, and magnesia source; and a material having, in the volume particle size distribution of the whole cordierite-forming raw material, a ratio of 90 volume % particle size (V | 01-08-2009 |
20090014925 | Method for manufacturing ceramic structure - A method for manufacturing a porous ceramic structure which comprises: mixing a ceramic material, a foamed resin and, if necessary, a forming auxiliary; forming the mixture; and then firing the thus formed body, wherein: a resin of an outer shell of the foamed resin is constituted of a copolymer containing 60 wt % or more of acrylonitrile and 40 wt % or less of methyl methacrylate. | 01-15-2009 |
20090075022 | HONEYCOMB STRUCTURE - There is disclosed a honeycomb structure having excellent thermal shock resistance. The honeycomb structure contains cordierite as a main component, and has an average pore diameter of 4 μm or more and 10 μm or less, a total pore volume of 0.18 cm | 03-19-2009 |
20090146350 | PROCESS FOR PRODUCING HONEYCOMB STRUCTURE - A process for producing a honeycomb structure includes: a mixing step where forming raw materials including a ceramic raw material are mixed to obtain a forming blended material, a kneading step where the forming blended material is kneaded to obtain kneaded clay, a forming step where the kneaded clay is formed into a honeycomb shape to obtain a honeycomb formed article, and a firing step where the honeycomb formed article is fired to obtain a honeycomb structure. The ceramic raw material is a cordierite forming raw material, and a magnetic powder contained in the kneaded clay is at a ratio of 400 ppm or less with respect to solid content conversion mass of the whole kneaded clay. There is provided a honeycomb structure capable of improving trapping efficiency, in particular, initial trapping efficiency by reducing the number of coarse pores in the partition walls. | 06-11-2009 |
20090220699 | METHOD FOR MANUFACTURING CERAMIC HONEYCOMB STRUCTURE AND COATING MATERIAL USED FOR THE METHOD - A method for manufacturing a ceramic honeycomb structure includes the steps of: forming the outer periphery of a ceramic structure having a plurality of cells separated by ceramic porous partition walls into a predetermined shape; applying a coating material containing at least a ceramic powder, water, and a high-boiling additive having a higher boiling point than that of water on an outer periphery of the cell structure | 09-03-2009 |
20090243166 | METHOD FOR MANUFACTURING HONEYCOMB STRUCTURE - There is provided a method for manufacturing a honeycomb structure capable of inhibiting a cut due to drying or firing from generating upon manufacturing a large-sized honeycomb structure. The method for manufacturing a honeycomb structure comprises the steps of: forming kneaded clay containing 3 to 6 parts by mass of a water-absorbent resin having a water-absorption ratio of 10 to 20 times with respect to 100 parts by mass of an oxide ceramic-forming raw material into a honeycomb shape to obtain a honeycomb formed article, drying the honeycomb formed article to obtain a honeycomb dried article, and firing the honeycomb dried article to obtain a honeycomb structure having a volume of 15 to 30 liter and a porosity of 55 to 70%. | 10-01-2009 |
20090243167 | MANUFACTURING METHOD OF HONEYCOMB STRUCTURE - There is provided a manufacturing method of a honeycomb structure, comprising: forming kneaded clay containing a cordierite forming raw material formed by mixing talc having an average particle diameter of 0.1 to 40 μm, kaolin having an average particle diameter of 0.1 to 20 μm, an alumina source raw material having an average particle diameter of 0.05 to 10 μm, and a silica having an average particle diameter of 0.1 to 20 μm, a binder, a surface active agent, water, and a hygroscopic resin having an average particle diameter of two to 200 μm after water absorption and a water absorption magnification of two to 100 magnifications into honeycomb shape to fabricate a honeycomb formed body; and firing the honeycomb formed body to obtain a honeycomb structure whose porosity is less than 40%. | 10-01-2009 |
20100086731 | HONEYCOMB STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - A honeycomb structure | 04-08-2010 |
20100119719 | METHOD FOR MANUFACTURING CERAMIC HONEYCOMB STRUCTURE AND COATING MATERIAL FOR THE CERAMIC HONEYCOMB STRUCTURE - There is provided a method for manufacturing a ceramic honeycomb structure comprising: a coating material adjustment step for obtaining a coating material by mixing at least water with a ceramic powder aggregate having only one peak in a particle size distribution, an average particle size of 23 to 39 μm, and a particle size distribution width of 15 to 33, a coating material application step for applying the coating material to cover the outer periphery of a honeycomb structure having a plurality of cells separated by porous ceramic partition walls, and a coating material heat-drying step for forming an outer wall by heat-drying the coating material after the coating material application step. By the method, the outer periphery is covered with a coating material to form an outer wall to hardly generate, for example, crack generation and peeling upon drying the outer wall, and the coating material is provided. | 05-13-2010 |
20100135866 | HONEYCOMB FILTER - A honeycomb filter including partition walls having a porous partition wall base material and a surface layer provided on only inflow side or both inflow and outflow sides of the partition wall base material, and satisfying the following conditions capable of using as a DPF. The surface layer has a peak pore diameter of from 0.3 μm to 20 μm (exclusive) being equal to or smaller than the average pore diameter of the base material; the porosity of from 60% to 95% (exclusive) when measured by mercury porosimetry being larger than that of the base material; and the thickness L | 06-03-2010 |
20100194004 | METHOD OF PRODUCING HONEYCOMB STRUCTURE - A method of producing a honeycomb structure includes producing a honeycomb structure using methyl cellulose as at least part of a binder, the methyl cellulose having a weight average molecular weight (Mw) of 4,000,000 to 5,000,000, and having an integral molecular weight distribution value of components having a molecular weight of 100,000 or less in the integral molecular weight distribution curve of 15 or less. | 08-05-2010 |
20100230870 | METHOD FOR PRODUCING ALUMINUM TITANATE CERAMIC - A method for producing an aluminum titanate ceramic, which comprises subjecting, to forming, a raw material for aluminum titanate formation, containing Na | 09-16-2010 |
20100242424 | HONEYCOMB FILTER - There is disclosed a honeycomb filter which can perform an NO | 09-30-2010 |
20100247853 | CERAMIC HONEYCOMB STRUCTURE - There is provided a ceramic honeycomb structure usable as a catalyst substrate and being improved warm-up properties and thermal insulation properties, and being excellent in exhaust gas purification performance; by employing larger heat capacity and larger thermal conductivity compared with a material of the partition walls in at least one of insides and surfaces of the respective partition walls. | 09-30-2010 |
20120183725 | HONEYCOMB STRUCTURE - There is disclosed a honeycomb structure including a honeycomb structure section including: porous partition walls to divide and form a plurality of cells which extend from one end surface to the other end surface and become through channels of a fluid; and an outer peripheral wall positioned in an outermost periphery. The partition walls and the outer peripheral wall contain silicon carbide particles as an aggregate, and silicon as a binder to bind the silicon carbide particles, thicknesses of the partition walls are from 50 to 200 μm, a cell density is from 50 to 150 cells/cm | 07-19-2012 |
20120187109 | HONEYCOMB STRUCTURE - A honeycomb structure includes: a honeycomb structural portion having porous partition walls functioning as fluid passages and separating and forming a plurality of cells extending from one end face to the other end face. The partition walls and the outer peripheral wall contain silicon carbide particles as a framework and silicon as a binder for binding the silicon carbide particles. The honeycomb structure has a partition walls thickness of 50 to 200 μm, a cell density of 40 to 150 cells/cm | 07-26-2012 |
20120225768 | METHOD FOR MANUFACTURING CERAMIC HONEYCOMB STRUCTURE AND COATING MATERIAL FOR THE CERAMIC HONEYCOMB STRUCTURE - There is provided a method for manufacturing a ceramic honeycomb structure comprising: a coating material adjustment step for obtaining a coating material by mixing at least water with a ceramic powder aggregate having only one peak in a particle size distribution, an average particle size of 23 to 39 μm, and a particle size distribution width of 15 to 33, a coating material application step for applying the coating material to cover the outer periphery of a honeycomb structure having a plurality of cells separated by porous ceramic partition walls, and a coating material heat-drying step for forming an outer wall by heat-drying the coating material after the coating material application step. By the method, the outer periphery is covered with a coating material to form an outer wall to hardly generate, for example, crack generation and peeling upon drying the outer wall, and the coating material is provided. | 09-06-2012 |
20130036719 | HONEYCOMB STRUCTURE - The honeycomb structure is provided with a honeycomb structural section, a pair of lateral electrodes on the side face of the honeycomb structural section, and at least one intermediate layer between the honeycomb structural section and the lateral electrodes. The honeycomb structural section has silicon carbide particles having an average particle diameter of 3 to 40 μm and silicon, and the ratio (Si/SiC) of silicon (Si) to silicon carbide (SiC) is 10/90 to 40/60. The lateral electrodes have an average particle diameter of the silicon carbide particles of 10 to 70 μm and a Si/SiC ratio of 20/80 to 50/50. The intermediate layer has an average particle diameter of silicon carbide particles and Si/SiC between those of the honeycomb structural section and those of the lateral electrodes. The electric resistance between the lateral electrodes of the honeycomb structural section is 2 to 100Ω. | 02-14-2013 |