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WO2009118811A1 - Structure en nid d'abeilles - Google Patents

Structure en nid d'abeilles Download PDF

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Publication number
WO2009118811A1
WO2009118811A1 PCT/JP2008/055458 JP2008055458W WO2009118811A1 WO 2009118811 A1 WO2009118811 A1 WO 2009118811A1 JP 2008055458 W JP2008055458 W JP 2008055458W WO 2009118811 A1 WO2009118811 A1 WO 2009118811A1
Authority
WO
WIPO (PCT)
Prior art keywords
honeycomb structure
honeycomb
outer peripheral
honeycomb fired
adhesive layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2008/055458
Other languages
English (en)
Japanese (ja)
Inventor
大野一茂
尾久和丈
石川茂治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ibiden Co Ltd
Original Assignee
Ibiden Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ibiden Co Ltd filed Critical Ibiden Co Ltd
Priority to PCT/JP2008/055458 priority Critical patent/WO2009118811A1/fr
Priority to EP10153622A priority patent/EP2196645B1/fr
Priority to AT10153622T priority patent/ATE523667T1/de
Priority to AT10153599T priority patent/ATE517237T1/de
Priority to EP08291234A priority patent/EP2113643B1/fr
Priority to AT08291234T priority patent/ATE542985T1/de
Priority to EP10153575A priority patent/EP2196643B1/fr
Priority to AT10153575T priority patent/ATE517236T1/de
Priority to EP10153599A priority patent/EP2196644B1/fr
Priority to KR1020090009609A priority patent/KR101046904B1/ko
Priority to CN2009100063531A priority patent/CN101543706B/zh
Priority to US12/395,939 priority patent/US20090239028A1/en
Publication of WO2009118811A1 publication Critical patent/WO2009118811A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2478—Structures comprising honeycomb segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2455—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the whole honeycomb or segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
    • B01D46/249—Quadrangular e.g. square or diamond
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0006—Honeycomb structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2466—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the adhesive layers, i.e. joints between segments
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0081—Uses not provided for elsewhere in C04B2111/00 as catalysts or catalyst carriers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
    • C04B2237/08—Non-oxidic interlayers
    • C04B2237/083—Carbide interlayers, e.g. silicon carbide interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/365—Silicon carbide

Definitions

  • the present invention relates to a honeycomb structure.
  • particulate matter contained in exhaust gas discharged from internal combustion engines such as buses and trucks and construction machinery and the like causes harm to the environment and the human body. It has become. Therefore, various honeycomb structures made of porous ceramics have been proposed as diesel particulate filters (hereinafter also simply referred to as DPF) that can collect particulates in exhaust gas and purify the exhaust gas.
  • DPF diesel particulate filters
  • a honeycomb structure for example, a honeycomb structure manufactured by binding a plurality of square pillar-shaped honeycomb fired bodies through an adhesive layer and then cutting them into a predetermined shape has been proposed.
  • a honeycomb structure manufactured by binding a plurality of honeycomb fired bodies, each of which has been previously extruded into a predetermined shape, through an adhesive layer for example, Patent Document 2). reference.
  • the honeycomb structure When the honeycomb structure is used as a DPF, it is necessary to hold the honeycomb structure in a predetermined case via a holding sealing material. In order to prevent the honeycomb structure from shifting in the case or part of the honeycomb fired body from falling out of the honeycomb structure due to exhaust gas, the honeycomb structure needs to be securely fixed in the case. . However, in this case, the honeycomb structure may be damaged due to the compressive stress applied from the outside of the honeycomb structure.
  • the honeycomb structure according to claim 1 Columnar honeycomb fired bodies in which a large number of cells are arranged in parallel in the longitudinal direction across the cell wall are a honeycomb structure in which a plurality of cells are bound via an adhesive layer,
  • the outer peripheral portion constituting the outer peripheral side of the honeycomb structure, the inner portion of the outer peripheral portion, the cross-sectional shape has a square central portion,
  • the central portion is composed of one central honeycomb fired body, or a plurality of central honeycomb fired bodies that are bound via the adhesive layer
  • the outer peripheral portion is composed of a plurality of outer peripheral honeycomb fired bodies bound through the adhesive layer,
  • at least one of the outer peripheral adhesive layers is formed in a direction from the corner of the central portion toward the outer peripheral side of the honeycomb structure.
  • the adhesive layer formed in a direction from the corner portion of the central portion toward the outer peripheral side surface of the honeycomb structure is formed in a direction toward the outer peripheral side surface of the honeycomb structure from other than the corner portion of the central portion.
  • first outer peripheral portion the adhesive layer formed in the direction from the corner portion in the central portion toward the outer peripheral side surface of the honeycomb structure is referred to as “first outer peripheral portion. Also referred to as an “adhesive layer”, the adhesive layer formed in a direction from the corner portion other than the central portion toward the outer peripheral side surface of the honeycomb structure is also referred to as a “second outer peripheral adhesive layer”.
  • the central portion in the cross section perpendicular to the longitudinal direction of the honeycomb structure is the center honeycomb fired body, the adhesive layer that binds the center honeycomb fired bodies, and the center honeycomb fired body. It refers to a region occupied by an adhesive layer that binds the outer peripheral honeycomb fired body. Further, the outer peripheral portion in the cross section perpendicular to the longitudinal direction of the honeycomb structure refers to a region occupied by the outer peripheral honeycomb fired body and an adhesive layer that binds the outer peripheral honeycomb fired bodies.
  • honeycomb structure according to claim 1, wherein the honeycomb structure includes the central portion and the outer peripheral portion, and the outer peripheral portion located outside the central portion has an outer periphery constituting a part of an outer peripheral side surface of the honeycomb structure.
  • a plurality of partial honeycomb fired bodies are bundled through an adhesive layer.
  • the direction from the corner portion of the central portion toward the outer peripheral side surface of the honeycomb structure And an adhesive layer (second outer periphery) formed in a direction from the corner portion other than the central portion toward the outer peripheral side surface of the honeycomb structure.
  • the angle formed by at least one of the partial adhesive layers is 40 to 50 °. Therefore, it is possible to prevent the honeycomb structure from being damaged by the compressive stress applied from the outside of the honeycomb structure.
  • the central honeycomb firing is performed at the central corner.
  • Two of the adhesive layers interposed between the body and the outer peripheral honeycomb structure and the first outer peripheral adhesive layer form a trident. In this way, if there is a portion where the adhesive layer has a trident in a cross section perpendicular to the longitudinal direction of the honeycomb structure, damage to the honeycomb structure can be prevented.
  • the honeycomb structures described in Patent Documents 1 and 2 since the adhesive layer is formed in a lattice shape, the compressive stress applied in a specific direction (the direction in which the adhesive layer is formed) In contrast, although it has high strength, the strength is weak against compressive stress applied in other directions, for example, the direction of 45 ° with the adhesive layer, and the honeycomb structure is easily damaged. In addition, in the honeycomb structures described in Patent Documents 1 and 2, since the adhesive layers cross each other in a cross shape, it is difficult to disperse the stress generated in the honeycomb structure, and the honeycomb structure is damaged. Cheap.
  • the center-portion honeycomb fired body refers to a honeycomb fired body that does not constitute the outer peripheral side surface of the honeycomb structure in a cross section perpendicular to the longitudinal direction of the honeycomb structure.
  • the angle formed by the first outer peripheral adhesive layer and the second outer peripheral adhesive layer is a straight line passing through the first outer peripheral adhesive layer and the other second outer peripheral adhesive. The angle formed by a straight line passing through the layer.
  • the invention according to claim 2 is the invention according to claim 1,
  • the central portion is composed of a plurality of central portion honeycomb fired bodies that are bound through the adhesive layer,
  • the adhesive is interposed between the outer peripheral honeycomb fired bodies and is formed in a direction from the corner portion of the central portion toward the outer peripheral side surface of the honeycomb structure.
  • At least one of the material layers is linear with any one of the adhesive material layers interposed between the above-mentioned center-portion honeycomb fired bodies.
  • Such an adhesive layer can serve as a so-called beam for further improving the strength of the honeycomb structure.
  • a cross section of a honeycomb structure when simply referred to as a cross section of a honeycomb structure, a cross section of a honeycomb fired body, or a cross section of a honeycomb formed body, a cross section perpendicular to the longitudinal direction of the honeycomb structure, respectively, It refers to a cross section perpendicular to the longitudinal direction or a cross section perpendicular to the longitudinal direction of the honeycomb formed body.
  • a cross-sectional area of a honeycomb fired body when simply expressed as a cross-sectional area of a honeycomb fired body, it indicates a cross-sectional area of a cross section perpendicular to the longitudinal direction of the honeycomb fired body.
  • the honeycomb fired body constituting the honeycomb structure of the present invention includes the central honeycomb fired body and the outer peripheral honeycomb fired body.
  • the honeycomb fired body constituting the honeycomb structure of the present invention includes the central honeycomb fired body and the outer peripheral honeycomb fired body.
  • the honeycomb fired body when it is not necessary to distinguish between the two, it is simply expressed as a honeycomb fired body.
  • FIG. 1 is a perspective view schematically showing the honeycomb structure of the first embodiment.
  • FIG. 2A is a perspective view schematically showing the center-portion honeycomb fired body in the honeycomb structure of the first embodiment.
  • FIG. 2B is a cross-sectional view taken along the line BB of FIG.
  • FIG. 3 is a perspective view schematically showing the outer peripheral honeycomb fired body in the honeycomb structure of the first embodiment. 4 is a cross-sectional view taken along line AA in FIG.
  • the central honeycomb fired body 110 having the shape shown in FIGS. 2A and 2B and the outer peripheral honeycomb fired body 120 having the shape shown in FIG. are bonded together via adhesive layers 101 (101A to 101D) to form a ceramic block 103, and a coat layer 102 is formed on the outer periphery of the ceramic block 103.
  • the shape of the cross section of the central honeycomb fired body 110 is a square.
  • the cross-sectional shape of the outer peripheral honeycomb fired body 120 is surrounded by three line segments 120a, 120b, and 120c and one arc 120d, and two corners (line lines) formed by two of the three line segments.
  • the angle formed by the minute segment 120b and the line segment 120c and the angle formed by the line segment 120a and the line segment 120b) are 90 ° and 135 °, respectively.
  • the honeycomb fired bodies 110 and 120 are made of a porous silicon carbide sintered body.
  • a large number of cells 111 are arranged in parallel in the longitudinal direction (in the direction of arrow a in FIG. 2 (a)) with a cell wall 113 therebetween.
  • One end of the cell 111 is sealed with a sealing material 112. Therefore, the exhaust gas G (see the arrow in FIG. 2B) flowing into the cell 111 with one end face opened must pass through the cell wall 113 separating the cell 111, and then the other cell with the other end face opened. 111 is flowing out. Therefore, the cell wall 113 functions as a filter for collecting PM and the like.
  • the outer peripheral honeycomb fired body 120 shown in FIG. 3 has a large number of cells 121 arranged in parallel in the longitudinal direction across the cell wall 123. Is sealed with a sealing material 122. Therefore, the exhaust gas that has flowed into the cell 121 having one open end face always passes through the cell wall 123 separating the cells 121 and then flows out from the other cell 121 having the other end face open. That is, the outer peripheral honeycomb fired body 120 has the same function as the central honeycomb fired body 110, although the outer shape is different from the central honeycomb fired body 110.
  • honeycomb structure 100 As shown in FIGS. 1 and 4, four central honeycomb fired bodies 110 are located at the center of the cross section of the honeycomb structure 100, and eight peripheral honeycomb fired bodies are disposed around the central fired body. 120 is positioned, and the honeycomb structure 100 (ceramic block 103) is bound through the adhesive layer 101 so that the cross section of the honeycomb structure 100 (ceramic block 103) is circular.
  • the four central honeycomb fired bodies 110 bundled through the adhesive layer 101A constitute a central portion in the cross section of the honeycomb structure 100, and are bonded through the adhesive layers 101C and 101D.
  • Each of the outer peripheral honeycomb fired bodies 120 constitutes an outer peripheral portion in the cross section of the honeycomb structure 100.
  • the honeycomb structure 100 having such a configuration (see FIG. 4), four central honeycomb fired bodies 110, an adhesive layer 101A for binding the central honeycomb fired bodies 110, and the central honeycomb fired body.
  • the region occupied by the adhesive layer 101B that binds the body 110 and the outer peripheral honeycomb fired body 120 is the central portion, and the eight outer peripheral honeycomb fired bodies 120 and the outer peripheral honeycomb fired bodies 120 are bonded together.
  • the area occupied by 101C and 101D is the outer periphery.
  • the honeycomb structure 100 has an adhesive layer (first layer) formed in a direction from the central corner to the outer peripheral side surface of the outer peripheral adhesive layers 101C and 101D in the cross section.
  • One outer peripheral adhesive layer (101C) and an adhesive layer (second outer peripheral adhesive layer) 101D formed in a direction from the corner portion other than the central portion toward the outer peripheral side surface of the honeycomb structure 100 are 45. It has an angle of °. As described above, when the first outer peripheral adhesive layer and the second outer peripheral adhesive layer form 45 °, it is possible to prevent the honeycomb structure from being damaged.
  • the first outer peripheral adhesive layer 101C and the adhesive layer 101B that binds the central honeycomb fired body 110 and the outer peripheral honeycomb fired body 120 are formed at the corners of the central portion. It has a trident. Thus, if there is a portion in which the adhesive layer has a trident in the cross section of the honeycomb structure, the honeycomb structure can be prevented from being damaged.
  • the second outer peripheral adhesive layer 101D is linear with the adhesive layer 101A that binds the central honeycomb fired bodies 110 together.
  • Such an adhesive layer can serve as a so-called beam for further improving the strength of the honeycomb structure.
  • a forming step for producing a honeycomb formed body by extruding a wet mixture containing a ceramic powder and a binder is performed. Specifically, first, a silicon carbide powder having a different average particle size as a ceramic powder, an organic binder, a liquid plasticizer, a lubricant, and water are mixed using a wet mixer to produce a honeycomb molded body. A wet mixture of is prepared. Subsequently, the wet mixture is charged into an extruder. The wet mixture is put into an extruder and extruded to produce a honeycomb formed body having a predetermined shape.
  • a honeycomb molded body having a square cross section, or a cross section surrounded by three line segments and one arc, two angles formed by two of the three line segments are 90 ° and 135 °, respectively.
  • an extrusion mold corresponding to each shape is used.
  • the honeycomb formed body is cut into a predetermined length and dried using a microwave dryer, hot air dryer, dielectric dryer, vacuum dryer, vacuum dryer, freeze dryer, or the like. Then, a sealing step of filling a predetermined cell with a sealing material paste as a sealing material and sealing the cell is performed.
  • the conditions conventionally used when manufacturing a honeycomb fired body can be applied to the conditions of the cutting process, the drying process, and the sealing process.
  • a degreasing step of heating the organic matter in the honeycomb molded body in a degreasing furnace is performed, and the honeycomb fired body is transported to the firing furnace and the firing step is performed to produce a honeycomb fired body.
  • the conditions conventionally used when manufacturing a honeycomb fired body are applicable.
  • an adhesive paste layer is formed by applying an adhesive paste to the predetermined side surfaces of the center honeycomb fired body and the peripheral honeycomb fired body in which predetermined ends of each cell are sealed. Then, a step of laminating other honeycomb fired bodies sequentially on this adhesive paste layer is repeated to perform a binding step for producing a ceramic block in which a predetermined number of honeycomb fired bodies are bound.
  • the adhesive paste for example, a paste made of an inorganic binder, an organic binder, and inorganic particles is used.
  • the adhesive paste may further contain inorganic fibers and / or whiskers.
  • a coating layer forming step is performed in which a coating material paste is applied to the outer periphery of the cylindrical ceramic block, dried and solidified to form a coating layer.
  • the coating material paste the same paste as the adhesive paste is used.
  • the coat layer is not necessarily provided, and may be provided as necessary.
  • honeycomb structure of the present embodiment there is a portion where the adhesive layer has a trident in the cross section of the honeycomb structure, so that the honeycomb structure can be prevented from being damaged.
  • honeycomb fired body constituting the honeycomb structure of the present embodiment
  • one end of each cell is sealed with a sealing material. Therefore, the honeycomb structure of the present embodiment can be suitably used as a diesel particulate filter.
  • the coat layer is formed on the outer peripheral side surface of the ceramic block, leakage of particulates from the outer peripheral side surface of the honeycomb structure can be prevented.
  • Example 1 Examples that more specifically disclose the first embodiment of the present invention will be described below. In addition, this invention is not limited only to these Examples.
  • the raw honeycomb molded body is dried using a microwave dryer to obtain a dried honeycomb molded body, and then a predetermined cell is filled with a paste having the same composition as the wet mixture, and again It dried using the dryer.
  • a degreasing step of degreasing the dried honeycomb formed body at 400 ° C. was performed, and further a firing step was performed at 2200 ° C. for 3 hours under an atmospheric pressure of argon atmosphere.
  • the porosity was 45%
  • the average pore diameter was 15 ⁇ m
  • the size was 34.5 mm ⁇ 34.5 mm ⁇ 150 mm
  • the number of cells (cell density) was 300 / inch 2
  • the cell wall thickness was 0.1.
  • a central honeycomb fired body 110 made of 25 mm (10 mil) porous silicon carbide sintered body;
  • the porosity, the average pore diameter, the number of cells (cell density), and the cell wall thickness are the same as those of the central honeycomb fired body 110, and the cross section is surrounded by three line segments and one arc.
  • Adhesive paste is applied to predetermined side surfaces of the central honeycomb fired body 110 and the peripheral honeycomb fired body 120, and four central honeycomb fired bodies 110 and the outer peripheral part are interposed through the adhesive paste.
  • the thickness of the adhesive layer is 1 mm and cylindrical.
  • the ceramic block 103 was produced.
  • the adhesive paste is composed of 30.0% by weight of silicon carbide particles having an average particle diameter of 0.6 ⁇ m, 21.4% by weight of silica sol, 8.0% by weight of carboxymethylcellulose, and 40.6% by weight of water. Adhesive paste was used.
  • a coating material paste layer was formed on the outer periphery of the ceramic block 103 using a coating material paste having the same composition as the adhesive paste used in the step (4). Thereafter, this coating material paste layer was dried at 120 ° C. to produce a cylindrical honeycomb structure 100 having a diameter of 143.8 mm and a length of 150 mm, in which the coating layer 102 was formed on the outer periphery.
  • the cross-sectional shape of the honeycomb structure manufactured in Example 1 is as shown in FIG. Therefore, in the honeycomb structure 100, in the cross section of the honeycomb structure 100, the angle formed by the first outer peripheral adhesive layer 101C and the second outer peripheral adhesive layer 101D is 45 °. Further, in the cross section of the honeycomb structure 100, the first outer peripheral adhesive layer 101C and the adhesive layer 101B for binding the central honeycomb fired body 110 and the outer peripheral honeycomb fired body 120 form a trident. There is a part.
  • Example 1 By performing the same steps as the steps (1) to (3) of Example 1, the porosity is 45%, the average pore diameter is 15 ⁇ m, the size is 34.3 mm ⁇ 34.3 mm ⁇ 150 mm, A honeycomb fired body made of a porous silicon carbide sintered body having a cell number (cell density) of 300 / inch 2 and a cell wall thickness of 0.25 mm (10 mil) was produced.
  • Adhesive paste is applied to the side face of the honeycomb fired body, 16 honeycomb fired bodies are bonded through the adhesive paste, and further, the adhesive paste is solidified at 180 ° C. for 20 minutes to bond.
  • An aggregate of honeycomb fired bodies having a prism shape with a material layer thickness of 1 mm was manufactured.
  • the same adhesive paste as the adhesive paste used in Example 1 was used as the adhesive paste.
  • the outer periphery of the aggregate of the honeycomb fired bodies was ground using a diamond cutter to produce a cylindrical ceramic block.
  • the coating material paste layer was formed in the outer peripheral part of the ceramic block using the coating material paste which consists of the same material as an adhesive material paste. And this coating material paste layer was dried at 120 degreeC, and the cylindrical honeycomb structure of diameter 143.8mm x length 150mm in which the coating layer was formed in the outer periphery was manufactured.
  • FIG. 5 is a cross-sectional view of the honeycomb structure 400 manufactured in Comparative Example 1.
  • 410 is a central honeycomb fired body
  • 420 and 430 are outer peripheral honeycomb fired bodies
  • 401A to 401D are adhesive layers
  • Reference numeral 402 denotes a coating layer
  • 403 denotes a ceramic block.
  • the first outer peripheral adhesive layer 401C and the second outer adhesive layer 401D are parallel or 90 °. Further, in the cross section of the honeycomb structure 400, there is no portion where the adhesive layer has a trident.
  • Example 1 Evaluation of honeycomb structure
  • Example 1 evaluation in accordance with “Testing method of ceramic monolith carrier for automobile exhaust gas purification catalyst (JASO M 505-87)” prescribed by the Automotive Standards (Japan Automobile Standards Organization) established by the Japan Society for Automotive Engineers (Japan)
  • isostatic strength was measured.
  • the isostatic strength of the honeycomb structure of Example 1 was 9 MPa.
  • the isostatic strength of the honeycomb structure of Comparative Example 1 was 6 MPa.
  • the honeycomb structure of the first embodiment is suitable for preventing the honeycomb structure from being damaged as compared with the conventional honeycomb structure (the honeycomb structure of Comparative Example 1). Became clear.
  • FIG. 6 is a cross-sectional view of the honeycomb structure of the second embodiment.
  • a plurality of central honeycomb fired bodies 210 and outer peripheral honeycomb fired bodies 220 and 230 are bonded together via adhesive layers 201A to 201D.
  • a ceramic block 203 is configured, and a coat layer 202 is formed on the outer periphery of the ceramic block 203.
  • the cross-sectional shape of the central honeycomb fired body 210 is a square.
  • the cross-sectional shape of the outer peripheral honeycomb fired body 220 is surrounded by three line segments 220a, 220b, and 220c and one arc 220d, and two corners (line lines) formed by two of the three line segments.
  • the angle formed by the segment 220a and the line segment 220b and the angle formed by the line segment 220b and the line segment 220c) are both 90 °.
  • the cross-sectional shape of the outer peripheral honeycomb fired body 230 is surrounded by three line segments 230a, 230b, and 230c and one arc 230d, and two corners (line lines) formed by two of the three line segments.
  • the angle formed by the minute segment 230b and the line segment 230c and the angle formed by the line segment 230a and the line segment 230b) are 90 ° and 135 °, respectively.
  • the center honeycomb fired body 210 is the same as the center honeycomb fired body 110 constituting the honeycomb structure of the first embodiment, and the outer peripheral honeycomb fired bodies 220 and 230 are the honeycomb structure of the first embodiment.
  • the external shape is different from that of the center-portion honeycomb fired body 110 constituting the above, its function is the same.
  • the honeycomb fired bodies 210, 220, and 230 are made of a porous silicon carbide sintered body.
  • honeycomb structure 200 As shown in FIG. 6, nine central honeycomb fired bodies 210 are located at the center of the cross section of the honeycomb structure 100, and eight outer peripheral honeycomb fired bodies 220 around it, Eight outer peripheral honeycomb fired bodies 230 are located, and are bonded through adhesive layers 201A to 201D so that the honeycomb structure 200 (ceramic block 203) has a circular cross section.
  • the nine central honeycomb fired bodies 210 bundled through the adhesive layer 201A constitute the central portion in the cross section of the honeycomb structure 200, and the total bundled through the adhesive layers 201C and 201D.
  • the 16 outer peripheral honeycomb fired bodies 220 and 230 constitute the outer peripheral portion in the cross section of the honeycomb structure 200.
  • honeycomb structure 200 having such a configuration, eight central honeycomb fired bodies 210, an adhesive layer 201A for binding the central honeycomb fired bodies 210, and the central honeycomb fired body 210 and the outer peripheral portion.
  • the area occupied by the adhesive layer 201B that binds the honeycomb fired body 220 is the central portion, and the 16 outer peripheral honeycomb fired bodies 220 and 230 and the outer peripheral honeycomb fired bodies 220 and 230 are bonded together.
  • 201D occupies the outer periphery.
  • the honeycomb structure 200 has an adhesive layer (first layer) formed in a direction from the corner of the central portion toward the outer peripheral side surface of the honeycomb structure 200 of the outer peripheral adhesive layers 201C and 201D in the cross section.
  • One outer peripheral adhesive layer (201C) and an adhesive layer (second outer peripheral adhesive layer) 201D formed in a direction from the corner portion other than the central portion toward the outer peripheral side surface of the honeycomb structure 200 are 45. It has an angle of °. As described above, when the first outer peripheral adhesive layer and the second outer peripheral adhesive layer form 45 °, it is possible to prevent the honeycomb structure from being damaged.
  • the first outer peripheral adhesive layer 201C and the adhesive layer 201B that binds the central honeycomb fired body 210 and the outer peripheral honeycomb fired body 220 are formed at the corners of the central portion. It has a trident. Thus, if there is a portion in which the adhesive layer has a trident in the cross section of the honeycomb structure, the honeycomb structure can be prevented from being damaged.
  • the manufacturing method of the honeycomb structure in the present embodiment is the same as the manufacturing method of the honeycomb structure in the first embodiment except for the following points. That is, the shape of the honeycomb formed body produced in the forming step (1) of the manufacturing method of the first embodiment is the center portion shown in FIG. 6 except that either one end of the cell is not sealed.
  • the honeycomb fired body 210 and the outer peripheral honeycomb fired bodies 220 and 230 have substantially the same shape, and when performing the binding step (4) of the manufacturing method of the first embodiment, it is shown in FIG.
  • the method for manufacturing the honeycomb structure in the first embodiment is the same.
  • the honeycomb structure of the present embodiment can be manufactured.
  • honeycomb structure of the present embodiment the same effects as the honeycomb structure of the first embodiment can be enjoyed.
  • Example 2 Examples that more specifically disclose the second embodiment of the present invention will be described below. In addition, this invention is not limited only to these Examples.
  • the raw honeycomb molded body is dried using a microwave dryer to obtain a dried honeycomb molded body, and then a predetermined cell is filled with a paste having the same composition as the wet mixture, and again It dried using the dryer.
  • a degreasing step of degreasing the dried honeycomb formed body at 400 ° C. was performed, and further a firing step was performed at 2200 ° C. for 3 hours under an atmospheric pressure of argon atmosphere. Accordingly, the porosity is 45%, the average pore diameter is 15 ⁇ m, the size is 34.5 mm ⁇ 34.5 mm ⁇ 200 mm, the number of cells (cell density) is 300 / inch 2 , and the cell wall thickness is 0.00.
  • a central honeycomb fired body 210 made of 25 mm (10 mil) porous silicon carbide sintered body;
  • the porosity, average pore diameter, number of cells (cell density), and cell wall thickness are the same as those of the central honeycomb fired body 210, and the cross section is surrounded by three line segments and one arc.
  • Adhesive paste is applied to predetermined side surfaces of the central honeycomb fired body 210 and the outer peripheral honeycomb fired bodies 220 and 230, and nine central honeycomb fired bodies 210 are disposed through the adhesive paste.
  • the adhesive paste similar to Example (1) was used as an adhesive paste.
  • a coating material paste layer was formed on the outer periphery of the ceramic block 203 using a coating material paste having the same composition as the adhesive paste used in the step (4). Thereafter, this coating material paste layer was dried at 120 ° C. to manufacture a cylindrical honeycomb structure 200 having a diameter of 203.2 mm and a length of 200 mm, on which the coating layer 202 was formed on the outer periphery.
  • the cross-sectional shape of the honeycomb structure manufactured in Example 2 is as shown in FIG. Therefore, in the honeycomb structure 200, the angle formed by the first outer peripheral adhesive layer 201C and the second outer peripheral adhesive layer 201D in the cross section of the honeycomb structure 200 is 45 °. Further, in the section of the honeycomb structure 200, the first outer peripheral adhesive layer 201C and the adhesive layer 201B for binding the central honeycomb fired body 210 and the outer peripheral honeycomb fired body 220 form a trident. There is a part.
  • Example 2 The honeycomb structure manufactured in Example 2 was measured for isostatic strength by the same method as in Example 1. As a result, the isostatic strength of the honeycomb structure of Example 2 was 8.5 MPa. From the above, it has become clear that the honeycomb structure of the second embodiment is suitable for preventing the honeycomb structure from being damaged.
  • honeycomb structure of the first and second embodiments In the method for manufacturing the honeycomb structure of the first and second embodiments, a honeycomb fired body formed in a predetermined shape is manufactured in advance, and the honeycomb structure is manufactured. However, the honeycomb structure of the embodiment of the present invention is manufactured. You may produce a structure using the following methods, for example. Hereinafter, another method for manufacturing the honeycomb structure of the embodiment of the present invention will be described by taking as an example the case of manufacturing the honeycomb structure of the first embodiment.
  • FIGS. 7A and 7B are cross-sectional views for explaining another example of the method for manufacturing a honeycomb structure according to the embodiment of the present invention.
  • a honeycomb fired body in which either one end of each cell is sealed is manufactured.
  • a central honeycomb fired body 310 having a square cross section and an outer peripheral honeycomb fired body 320 ′ having a trapezoidal cross section are manufactured (see FIG. 7A).
  • an adhesive is used so that the central honeycomb fired body 310 and the outer peripheral honeycomb fired body 320 ′ are positioned as shown in FIG.
  • a bundle 303 'of honeycomb fired bodies is produced by binding the paste layers and solidifying the adhesive paste layer.
  • an outer periphery processing step is performed in which a side surface of the honeycomb fired body aggregate 303 ′ is processed into a cylindrical shape by using a diamond cutter or the like, and the central honeycomb fired body 310, the outer peripheral honeycomb fired body 320, Is manufactured through the adhesive layer 301 (see FIG. 7B). Thereafter, if necessary, a coat layer (not shown) is formed on the outer peripheral side surface of the ceramic block 303 to complete the honeycomb structure.
  • the cross-sectional shape of the honeycomb structure according to the embodiment of the present invention is not limited to a circular shape, and may be, for example, an elliptical shape, an oval shape, a race track shape, or the like.
  • the number of the central honeycomb fired bodies is not limited to a plurality, and may be one.
  • the cross-sectional shape of the honeycomb structure may be a shape as shown in FIG.
  • FIG. 8 is a cross-sectional view of a honeycomb structure according to another embodiment of the present invention.
  • the configuration of the honeycomb structure 700 shown in FIG. 8 is the same as that of the honeycomb structure 100 of the first embodiment, except that the number of central honeycomb fired bodies is different. That is, in the honeycomb structure 700 shown in FIG. 8, instead of the four central honeycomb fired bodies 110 bound via the adhesive layer 101A of the honeycomb structure 100 shown in FIG. Partial honeycomb fired body 710 is provided. Although the central honeycomb fired body 710 has a larger cross-sectional area than the central honeycomb fired body 110, its function is the same.
  • the first outer peripheral adhesive layer 701C and the second outer peripheral adhesive layer 701D form an angle of 45 ° in the cross section. Further, in the honeycomb structure 700, the first outer peripheral adhesive layer 701C and the adhesive layer 701B that binds the central honeycomb fired body 710 and the outer peripheral honeycomb fired body 720 are three-pronged at the central corner. I am doing. Therefore, the honeycomb structure 700 can enjoy the same effects as the effects of the first embodiment.
  • 702 indicates a coat layer
  • 703 indicates a ceramic block.
  • the angle formed by the first outer peripheral adhesive layer and the second outer peripheral adhesive layer is not limited to 45 °, It may be 50 °. If the angle of the angle formed by the first outer peripheral adhesive layer and the second outer peripheral adhesive layer is within this range, the honeycomb structure may be affected by compressive stress generated in various directions on the outer peripheral surface of the honeycomb structure. This is because it is suitable for preventing damage. Further, in the honeycomb structure of the embodiment described so far, the entire first outer peripheral adhesive layer forms 40 to 50 ° with the entire second outer peripheral adhesive layer. In the honeycomb structure of the embodiment, the first outer peripheral adhesive layer only needs to form 40 to 50 ° with at least one of the second outer peripheral adhesive layers.
  • the cross-sectional area of the central honeycomb fired body is desirably 900 to 2500 mm 2 . This is because when the cross-sectional area of the central honeycomb fired body is in the above range, cracks are less likely to occur in the honeycomb structure when the honeycomb structure is subjected to a regeneration treatment.
  • the end of the cell may not be sealed.
  • a honeycomb structure can be used as a catalyst carrier.
  • Examples of the inorganic binder contained in the adhesive paste include silica sol and alumina sol. These may be used alone or in combination of two or more. Among inorganic binders, silica sol is desirable.
  • Examples of the inorganic particles contained in the adhesive paste include inorganic particles made of carbide, nitride, and the like. Specifically, inorganic particles made of silicon carbide, silicon nitride, boron nitride, and the like can be given. . These may be used alone or in combination of two or more. Among the inorganic particles, inorganic particles made of silicon carbide having excellent thermal conductivity are desirable.
  • inorganic fibers and / or whiskers contained in the adhesive paste examples include inorganic fibers and / or whiskers made of silica-alumina, mullite, alumina, silica, and the like. These may be used alone or in combination of two or more. Among inorganic fibers, alumina fibers are desirable.
  • the porosity of the honeycomb fired body is not particularly limited, but is desirably 35 to 60%. If the porosity is less than 35%, the honeycomb structure of the embodiment of the present invention may be clogged immediately. On the other hand, if the porosity exceeds 60%, the strength of the honeycomb fired body decreases. This is because they can be easily destroyed.
  • the average pore diameter of the honeycomb fired body is desirably 5 to 30 ⁇ m. If the average pore diameter is less than 5 ⁇ m, the particulates may easily clog. On the other hand, if the average pore diameter exceeds 30 ⁇ m, the particulates pass through the pores and collect the particulates. This is because it may not be able to function as a filter.
  • the porosity and pore diameter can be measured by a conventionally known method such as a mercury intrusion method, an Archimedes method, or a measurement using a scanning electron microscope (SEM).
  • a conventionally known method such as a mercury intrusion method, an Archimedes method, or a measurement using a scanning electron microscope (SEM).
  • the cell density in the cross section of the honeycomb structure is not particularly limited, but a desirable lower limit is 31.0 / cm 2 (200 / in 2 ), and a desirable upper limit is 93 / cm 2 (600 / in 2 ).
  • the more desirable lower value is 38.8 / cm 2 (250 / in 2 ), and the more desirable upper limit is 77.5 / cm 2 (500 / in 2 ).
  • the thickness of the cell wall of the honeycomb structure is not particularly limited, but is preferably 0.1 to 0.4 mm.
  • the main component of the constituent material of the honeycomb structure is not limited to silicon carbide, and other ceramic raw materials include, for example, nitride ceramics such as aluminum nitride, silicon nitride, boron nitride, and titanium nitride, zirconium carbide, Examples thereof include carbide ceramics such as titanium carbide, tantalum carbide, and tungsten carbide, and oxide ceramics such as cordierite and aluminum titanate. Of these, non-oxide ceramics are preferred, and silicon carbide is particularly preferred. It is because it is excellent in heat resistance, mechanical strength, thermal conductivity and the like.
  • ceramic raw materials such as silicon-containing ceramics in which metallic silicon is blended with the above-described ceramics, ceramics bonded with silicon or a silicate compound can be cited as constituent materials, and among these, silicon carbide is blended with silicon carbide.
  • silicon carbide is blended with silicon carbide.
  • silicon-containing silicon carbide is desirable.
  • a silicon-containing silicon carbide ceramic containing 60 wt% or more of silicon carbide is desirable.
  • the particle size of the ceramic powder is not particularly limited, but it is preferable that the size of the honeycomb fired body manufactured through the subsequent firing step is small compared to the size of the degreased honeycomb formed body.
  • organic binder mixed with the said wet mixture For example, methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, polyethyleneglycol etc. are mentioned. Of these, methylcellulose is desirable.
  • the amount of the organic binder is usually 1 to 10 parts by weight with respect to 100 parts by weight of the ceramic powder.
  • the plasticizer mixed with the wet mixture is not particularly limited, and examples thereof include glycerin.
  • the lubricant mixed in the wet mixture is not particularly limited, and examples thereof include polyoxyalkylene compounds such as polyoxyethylene alkyl ether and polyoxypropylene alkyl ether. Specific examples include polyoxyethylene monobutyl ether and polyoxypropylene monobutyl ether. In some cases, the plasticizer and the lubricant may not be contained in the wet mixture.
  • a dispersion medium liquid may be used.
  • the dispersion medium liquid include water, an organic solvent such as benzene, and an alcohol such as methanol.
  • a molding aid may be added to the wet mixture.
  • the molding aid is not particularly limited, and examples thereof include ethylene glycol, dextrin, fatty acid, fatty acid soap, polyalcohol and the like.
  • a pore-forming agent such as balloons that are fine hollow spheres containing oxide-based ceramics, spherical acrylic particles, and graphite may be added to the wet mixture as necessary.
  • the balloon is not particularly limited, and examples thereof include an alumina balloon, a glass micro balloon, a shirasu balloon, a fly ash balloon (FA balloon), and a mullite balloon. Of these, alumina balloons are desirable.
  • the encapsulant paste for sealing the cells is not particularly limited, but it is desirable that the encapsulant produced through a subsequent process has a porosity of 30 to 75%.
  • a paste-like material similar to a wet mixture Can be used.
  • the honeycomb structure may support a catalyst for purifying exhaust gas.
  • a catalyst for purifying exhaust gas for example, a noble metal such as platinum, palladium, rhodium or the like is desirable, and among these, platinum is more desirable.
  • other catalysts for example, alkali metals such as potassium and sodium, and alkaline earth metals such as barium can be used. These catalysts may be used alone or in combination of two or more.
  • the bundling step in the method for manufacturing a honeycomb structure according to the embodiment of the present invention includes, for example, a ceramic block (or an aggregate of honeycomb fired bodies) to be produced in addition to the method of applying the adhesive paste to the side surfaces of each honeycomb fired body.
  • the honeycomb fired bodies may be temporarily fixed in a form having substantially the same shape as the shape, and an adhesive paste may be injected between the honeycomb fired bodies.
  • FIG. 1 is a perspective view schematically showing the honeycomb structure of the first embodiment.
  • FIG. 2 (a) is a perspective view schematically showing a central honeycomb fired body in the honeycomb structure of the first embodiment, and
  • FIG. 2 (b) is a cross-sectional view taken along line BB in FIG. 2 (a).
  • FIG. FIG. 3 is a perspective view schematically showing an outer peripheral honeycomb fired body in the honeycomb structure of the first embodiment.
  • 4 is a cross-sectional view taken along line AA in FIG.
  • FIG. 5 is a cross-sectional view of the honeycomb structure manufactured in Comparative Example 1.
  • FIG. 6 is a cross-sectional view of the honeycomb structure of the second embodiment.
  • FIGS. 7A and 7B are cross-sectional views for explaining another example of the method for manufacturing a honeycomb structure according to the embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of a honeycomb structure according to another embodiment of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne une structure en nid d'abeilles qui est conçue pour empêcher toute rupture causée par une force de compression appliquée depuis l'extérieur de la structure en nid d'abeilles et également conçue pour relaxer toute contrainte générée à l'intérieur de la structure en nid d'abeilles. La structure en nid d'abeilles comprend de multiples corps cuits en nid d'abeilles colonnaires liés ensemble au moyen de couches de liant. La structure en nid d'abeilles est composée au niveau de sa section transversale d'une section périphérique constituant le côté périphérique de la structure en nid d'abeilles et d'une section centrale s'étendant à l'intérieur de la section périphérique et quadrangulaire au niveau de la configuration sectionnelle. La section centrale est constituée d'un ou de plusieurs corps cuits en nid d'abeilles centraux. La section périphérique est constituée de multiples corps cuits en nid d'abeilles périphériques, liés ensemble au moyen des couches de liant. Dans la section transversale de la structure en nid d'abeilles, au moins une des couches de liant de la section périphérique est formée dans la direction s'étendant depuis une partie angulaire de la section centrale jusqu'à la face latérale périphérique. Chacune des couches de liant formée dans la direction s'étendant depuis une partie angulaire de la section centrale jusqu'à la face latérale périphérique présente un angle de 40° à 50° par rapport à au moins une des couches de liant formée dans la direction s'étendant depuis une partie non angulaire de la section centrale jusqu'à la face latérale périphérique.
PCT/JP2008/055458 2008-03-24 2008-03-24 Structure en nid d'abeilles Ceased WO2009118811A1 (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
PCT/JP2008/055458 WO2009118811A1 (fr) 2008-03-24 2008-03-24 Structure en nid d'abeilles
EP10153622A EP2196645B1 (fr) 2008-03-24 2008-12-23 Corps structuré en nid d'abeille
AT10153622T ATE523667T1 (de) 2008-03-24 2008-12-23 Wabenstrukturkörper
AT10153599T ATE517237T1 (de) 2008-03-24 2008-12-23 Wabenstrukturkörper
EP08291234A EP2113643B1 (fr) 2008-03-24 2008-12-23 Corps structuré en nid d'abeille
AT08291234T ATE542985T1 (de) 2008-03-24 2008-12-23 Wabenstrukturkörper
EP10153575A EP2196643B1 (fr) 2008-03-24 2008-12-23 Corps structuré en nid d'abeille
AT10153575T ATE517236T1 (de) 2008-03-24 2008-12-23 Wabenstrukturkörper
EP10153599A EP2196644B1 (fr) 2008-03-24 2008-12-23 Corps structuré en nid d'abeille
KR1020090009609A KR101046904B1 (ko) 2008-03-24 2009-02-06 허니컴 구조체
CN2009100063531A CN101543706B (zh) 2008-03-24 2009-02-10 蜂窝结构体
US12/395,939 US20090239028A1 (en) 2008-03-24 2009-03-02 Honeycomb structure

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EP2380863A1 (fr) * 2010-04-22 2011-10-26 Ibiden Co., Ltd. Corps structuré en nid d'abeille
JP2011224970A (ja) * 2010-03-23 2011-11-10 Ibiden Co Ltd ハニカム構造体

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JPH02150691A (ja) * 1988-11-30 1990-06-08 Kyocera Corp ハニカム熱交換器とその製法
JPH07286797A (ja) * 1994-04-18 1995-10-31 Osaka Gas Co Ltd ハニカム構造体
JP2001190916A (ja) * 2000-01-13 2001-07-17 Ngk Insulators Ltd ハニカム構造体
JP2003161136A (ja) * 2001-07-31 2003-06-06 Ngk Insulators Ltd ハニカム構造体及びその製造方法
JP2004322097A (ja) * 2004-07-12 2004-11-18 Ibiden Co Ltd セラミックス構造体製品及びその製造方法
JP2005512782A (ja) * 2001-12-20 2005-05-12 サン−ゴバン・サントル デゥ ルシェルシュ エ デチューデ・ウロペアン 複数の濾過ユニットを備える、特に粒子フィルタ用に設計された濾過本体
JP2007229700A (ja) * 2005-06-24 2007-09-13 Ibiden Co Ltd ハニカム構造体

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Publication number Priority date Publication date Assignee Title
JPH02150691A (ja) * 1988-11-30 1990-06-08 Kyocera Corp ハニカム熱交換器とその製法
JPH07286797A (ja) * 1994-04-18 1995-10-31 Osaka Gas Co Ltd ハニカム構造体
JP2001190916A (ja) * 2000-01-13 2001-07-17 Ngk Insulators Ltd ハニカム構造体
JP2003161136A (ja) * 2001-07-31 2003-06-06 Ngk Insulators Ltd ハニカム構造体及びその製造方法
JP2005512782A (ja) * 2001-12-20 2005-05-12 サン−ゴバン・サントル デゥ ルシェルシュ エ デチューデ・ウロペアン 複数の濾過ユニットを備える、特に粒子フィルタ用に設計された濾過本体
JP2004322097A (ja) * 2004-07-12 2004-11-18 Ibiden Co Ltd セラミックス構造体製品及びその製造方法
JP2007229700A (ja) * 2005-06-24 2007-09-13 Ibiden Co Ltd ハニカム構造体

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011224970A (ja) * 2010-03-23 2011-11-10 Ibiden Co Ltd ハニカム構造体
EP2380863A1 (fr) * 2010-04-22 2011-10-26 Ibiden Co., Ltd. Corps structuré en nid d'abeille
US8895131B2 (en) 2010-04-22 2014-11-25 Ibiden Co., Ltd. Honeycomb structure

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