WO2012056905A1 - 封口材及びセラミックスハニカム焼成体の製造方法 - Google Patents
封口材及びセラミックスハニカム焼成体の製造方法 Download PDFInfo
- Publication number
- WO2012056905A1 WO2012056905A1 PCT/JP2011/073700 JP2011073700W WO2012056905A1 WO 2012056905 A1 WO2012056905 A1 WO 2012056905A1 JP 2011073700 W JP2011073700 W JP 2011073700W WO 2012056905 A1 WO2012056905 A1 WO 2012056905A1
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- WIPO (PCT)
- Prior art keywords
- fired body
- sealing material
- honeycomb fired
- ceramic
- inorganic
- Prior art date
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Classifications
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- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/478—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on aluminium titanates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J1/00—Adhesives based on inorganic constituents
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- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
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- 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
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- 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
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- 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
- C04B38/0012—Honeycomb structures characterised by the material used for sealing or plugging (some of) the channels of the honeycombs
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
- C04B2235/3236—Alkaline earth titanates
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/11—Compounds containing metals of Groups 4 to 10 or of Groups 14 to 16 of the Periodic Table
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
Definitions
- the present invention relates to a sealing material and a method for manufacturing a ceramic honeycomb fired body.
- honeycomb filters are widely known for DPF (Diesel particulate filter) and the like.
- DPF Diesel particulate filter
- one end side of a part of the honeycomb fired body having a large number of through holes (flow paths) is sealed with a plugging material, and the other end side of the remaining through holes is sealed with a sealant. It has a sealed structure.
- a sealing material for forming such a honeycomb fired body a paste containing an inorganic compound and an organic compound is known (see Patent Document 1).
- Patent Document 1 contains an organic compound, when used for sealing a ceramic honeycomb fired body, an operation of decomposing or removing the organic compound at a high temperature after sealing is necessary. Therefore, there are problems that the number of steps for manufacturing the ceramic honeycomb fired body is increased and the operation becomes complicated.
- the present invention provides a sealing material that is cured at a low temperature (for example, 100 to 300 ° C.), provides excellent adhesion to the partition walls of the ceramic honeycomb fired body, and provides excellent heat resistance, and It aims at providing the manufacturing method of the ceramic honeycomb fired body using this.
- a low temperature for example, 100 to 300 ° C.
- the present invention provides a sealing material containing a water-based inorganic adhesive and aluminum titanate ceramic particles.
- Such a sealing material can be cured at a low temperature (for example, 100 to 300 ° C.) by having the above specific composition, can obtain excellent adhesion with the partition walls of the ceramic honeycomb fired body, and It has heat resistance that maintains its shape at high temperatures (eg, 1200 ° C.). Therefore, this sealing material is very useful for sealing ceramic honeycomb fired bodies.
- the sealing material may also be used as a repairing agent for repairing defective parts such as chipping and cracking or insufficient sealing parts in the ceramic honeycomb fired body. it can.
- the aluminum titanate ceramic particles imply aluminum magnesium titanate ceramic particles. Further, the aluminum titanate ceramic particles may be used alone or in combination of two or more.
- the solid content mass ratio between the inorganic adhesive and the aluminum titanate ceramic particles is preferably 99: 1 to 25:75.
- the inorganic adhesive preferably contains a colloidal inorganic oxide, an inorganic polymer, refractory particles, and water.
- sclerosis hardenability at low temperature, adhesiveness, and heat resistance can be made more favorable.
- the present invention also includes an extrusion step of extruding the raw material mixture to obtain a green honeycomb (unsintered (green) honeycomb) molded body having a plurality of flow paths partitioned by partition walls, and firing the green honeycomb molded body.
- the sealing material can be cured at a low temperature of 100 to 300 ° C., the adhesion between the cured sealing material and the partition walls of the ceramic honeycomb fired body can be improved, and the cured material can be cured.
- the sealing material can obtain excellent heat resistance.
- a sealing material that is cured at a low temperature (for example, 100 to 300 ° C.), has excellent adhesion to the partition walls of the fired ceramic honeycomb body, and has excellent heat resistance, and A method for producing a ceramic honeycomb fired body using the above can be provided.
- FIG. 1 (a) is a perspective view showing an example of a ceramic honeycomb fired body
- FIG. 1 (b) is a partially enlarged view of FIG. 1 (a).
- the sealing material of the present embodiment contains a water-based inorganic adhesive and aluminum titanate-based ceramic particles (powder).
- a water-based inorganic adhesive and aluminum titanate-based ceramic particles (powder).
- the inorganic adhesive is a water-based inorganic adhesive.
- the water-based inorganic adhesive refers to an agent in which an inorganic compound having thermosetting properties is dispersed in a dispersion medium mainly composed of water.
- the inorganic adhesive preferably contains at least one selected from colloidal inorganic oxides, inorganic polymers, and refractory particles and water, and contains colloidal inorganic oxides, inorganic polymers, refractory particles and water. It is more preferable that it is included.
- the inorganic adhesive may contain inorganic fibers. Examples of colloidal inorganic oxides include colloidal silica and colloidal alumina.
- Examples of the inorganic polymer include polyphosphoric acid compounds, polyaluminic acid compounds, and polysiloxane compounds.
- Examples of the refractory particles include alumina, quartz, feldspar, aluminum silicate, mullite and the like.
- Examples of the inorganic fibers include alumina fibers, silica fibers, silica alumina fibers, and the like.
- the content of the colloidal inorganic oxide in the inorganic adhesive is preferably 6 to 20% by mass based on the total solid content of the inorganic adhesive. If it is less than 6% by mass, the adhesive strength may decrease. If it exceeds 20% by mass, the adhesive strength increases, but the ratio of refractory particles and inorganic fibers in the inorganic adhesive decreases, so that cracks may occur after curing.
- the content of the refractory particles in the inorganic adhesive is preferably 30 to 90% by mass, and more preferably 50 to 90% by mass based on the total solid content of the inorganic adhesive.
- the content of the inorganic polymer in the inorganic adhesive is preferably 0.1 to 10% by mass, more preferably 0.1 to 5% by mass based on the total solid content of the inorganic adhesive.
- the content of the inorganic fiber in the inorganic adhesive is preferably 0 to 10% by mass, more preferably 0 to 5% by mass based on the total solid content of the inorganic adhesive.
- the content of water in the inorganic adhesive is preferably adjusted so that the viscosity of the inorganic adhesive falls within a preferable range described later. Or it is preferable to adjust so that content of the water in an inorganic adhesive agent may become the quantity of the preferable water as the whole sealing material mentioned later.
- the viscosity of the inorganic adhesive is preferably 1000 to 80000 mPa ⁇ s, and more preferably 5000 to 50000 mPa ⁇ s. When the viscosity is less than 1000 mPa ⁇ s, there is a tendency to sag due to gravity.
- the aluminum titanate ceramic particles of this embodiment imply aluminum magnesium titanate ceramic particles.
- the sealing material contains these ceramic particles, the heat resistance is improved, the volume shrinkage after curing is small, and the adhesion with the partition walls of the ceramic honeycomb fired body is improved.
- the magnesium content in the aluminum magnesium titanate ceramic particles is a molar ratio (magnesium to the total amount of aluminum and titanium). Of the total number of moles of aluminum and titanium) is preferably 0.03 to 0.15, and more preferably 0.03 to 0.12.
- aluminum titanate-based crystals are known to decompose into titania, alumina, etc. at a temperature of 1100 to 1200 ° C.
- the thermal decomposition resistance is improved. Can be improved.
- the aluminum titanate-based ceramic particles are aluminum titanate (Al 2 TiO 5 ) or aluminum magnesium titanate (Al 2 (1-x) Mg x Ti (1 + x) O 5 ) in the X-ray diffraction spectrum.
- other crystal patterns such as alumina and titania may be included.
- the aluminum titanate ceramic particles may contain impurities other than titanium, aluminum, magnesium and oxygen, for example, impurity elements inevitably mixed from raw materials such as alkali metal elements such as sodium and potassium, and silicon. Good.
- the aluminum titanate-based ceramic particles also mean ceramic particles having a composite phase of aluminum titanate or aluminum magnesium titanate and other inorganic substances. Examples of other inorganic materials include alumina, titania, magnesia, aluminosilicate glass, tridymite, cristobalite, spinel, cordierite, mullite, feldspar and the like.
- the particle size of the ceramic particles is not particularly limited, but the volume-based cumulative particle size 50% equivalent particle size (D50) measured by a laser diffraction method is preferably 1 to 100 ⁇ m, and more preferably 5 to 50 ⁇ m. . If the particle size is less than 1 ⁇ m, the volume shrinkage after curing of the sealing material tends to increase, and if it exceeds 100 ⁇ m, the aluminum titanate-based ceramic particles may be separated and precipitated in the sealing material. The material tends to be difficult to handle.
- D50 volume-based cumulative particle size 50% equivalent particle size
- the solid content mass ratio of the inorganic adhesive and the aluminum titanate ceramic particles is preferably 99: 1 to 25:75, and 90:10 More preferably, it is ⁇ 25: 75, and more preferably 57:43 to 27:73. If the amount of the inorganic adhesive is less than the above ratio (the amount of aluminum titanate ceramic particles is large), the adhesive strength tends to be low and the sealing material tends to be hard to be cured. If the aluminum titanate ceramic particles are less than the above ratio (there are many inorganic adhesives), the thermal expansion coefficient after curing of the sealing material becomes larger than that of the honeycomb fired body, and the thermal shock resistance of the sealing material tends to decrease. is there.
- the sealing material is aqueous and contains water as a solvent.
- the sealing material may be alkaline, neutral, or acidic.
- the water content in the sealing material is preferably 25 to 60% by mass, more preferably 30 to 55% by mass based on the total amount of the sealing material. When the water content is less than 25% by mass, the sealing material tends to be hard and difficult to flow, and when it exceeds 60% by mass, the sealing material tends to dripping during curing.
- the sealing material may contain materials other than those described above as long as the effects of the present invention are not impaired.
- a sealing material does not contain an organic compound.
- any organic compound that can be removed by heating at 100 to 300 ° C. can be added as long as the effects of the present invention are not impaired.
- the organic compound that can be added include water-soluble organic solvents such as alcohols such as methanol, ethanol, and butanol, and glycols such as propylene glycol and ethylene glycol.
- the sealing material is usually in the form of a paste or slurry, and can be prepared by uniformly mixing the above-described constituent materials.
- the method for manufacturing a ceramic honeycomb fired body of the present embodiment includes an extrusion forming step of extruding a raw material mixture to obtain a green honeycomb molded body having a plurality of flow paths partitioned by partition walls, and firing the green honeycomb molded body. Firing step for obtaining an unsealed honeycomb fired body, and sealing one end of the flow path in the unsealed honeycomb fired body using the sealing material of the present embodiment to obtain a sealed honeycomb fired body And a heating step of heating the sealed honeycomb fired body at 100 to 300 ° C. to obtain a ceramic honeycomb fired body.
- the present invention includes a method of repairing a defective portion such as a chip or a crack or an insufficiently sealed portion in the ceramic honeycomb fired body with the sealing material of the present embodiment.
- FIG. 1 is a view showing an example of a ceramic honeycomb fired body manufactured by the manufacturing method of the present embodiment.
- FIG. 1 (a) is a perspective view showing an example of a ceramic honeycomb fired body
- FIG. 1 (b) is a partially enlarged view of FIG. 1 (a).
- a ceramic honeycomb fired body 70 shown in FIG. 1 is a cylindrical body in which a large number of flow paths 70a and 70b partitioned by partition walls 70c are arranged substantially in parallel, as shown in FIG.
- the cross-sectional shapes of the flow paths 70a and 70b are square as shown in FIG.
- the plurality of flow paths 70a and 70b are arranged in a square configuration when viewed from the end face, that is, the central axes of the flow paths 70a and 70b are respectively positioned at the apexes of the square.
- the flow paths 70a and 70b have one of the openings at both ends sealed.
- the flow channel 70a is opened, and the flow channel 70b is sealed.
- the flow path 70a is sealed and the flow path 70b is opened.
- the flow paths 70a and the flow paths 70b are alternately arranged.
- the square size of the cross sections of the flow paths 70a and 70b can be set to 0.5 to 2.5 mm on one side, for example.
- the diameter is preferably about 100 mm or more
- the length is about 100 mm or more
- the wall thickness of the partition wall 70c is preferably about 0.5 mm or less.
- the wall thickness of the partition wall 70c is preferably about 0.2 mm or more.
- the cell structure in the honeycomb fired body 70 is preferably 100 CPSI (Cells Per Square Inch) or more as the total number of the flow paths 70a and 70b.
- the honeycomb fired body 70 preferably has an effective porosity of 30 to 60% by volume, an average pore diameter of 1 to 20 ⁇ m, and a pore size distribution (D 90 -D 10 ) / D 50 of less than 0.5.
- D 10 , D 50 , and D 90 are pore diameters when the cumulative pore volume is 10%, 50%, and 90%, respectively, of the total pore volume.
- the extrusion molding step is a step of obtaining a green honeycomb molded body by extruding the raw material mixture.
- the raw material mixture for forming the green honeycomb molded body is a material that becomes porous ceramics by firing later, and includes a ceramic raw material.
- the ceramic raw material is not particularly limited, and examples thereof include alumina, silica, mullite, cordierite, glass, oxides such as aluminum titanate, silicon carbide, silicon nitride, and metal.
- the aluminum titanate can further contain magnesium and / or silicon.
- the raw material mixture preferably contains an inorganic compound source powder that is a ceramic raw material, an organic binder such as methylcellulose, and an additive that is added as necessary.
- the inorganic compound source powder is aluminum source powder such as ⁇ alumina powder, titanium source powder such as anatase type or rutile type titania powder, and / or aluminum titanate powder.
- a magnesium source powder such as magnesia powder and magnesia spinel powder and / or a silicon source powder such as silicon oxide powder and glass frit can be further contained.
- the coefficient of thermal expansion between the partition walls of the ceramic honeycomb fired body and the sealing material of the present embodiment is preferably close.
- organic binder examples include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and lignin sulfonate.
- the additive examples include a pore-forming agent, a lubricant and a plasticizer, a dispersant, and a solvent.
- pore-forming agents include carbon materials such as graphite; resins such as polyethylene, polypropylene and polymethyl methacrylate; plant materials such as starch, nut shells, walnut shells and corn; ice; and dry ice.
- Lubricants and plasticizers include alcohols such as glycerol; higher fatty acids such as caprylic acid, lauric acid, palmitic acid, arachidic acid, oleic acid and stearic acid; stearic acid metal salts such as Al stearate; polyoxyalkylene alkyl Examples include ether.
- dispersant examples include inorganic acids such as nitric acid, hydrochloric acid and sulfuric acid; organic acids such as oxalic acid, citric acid, acetic acid, malic acid and lactic acid; alcohols such as methanol, ethanol and propanol; ammonium polycarboxylate Surfactant etc. are mentioned.
- solvent for example, alcohols such as methanol, ethanol, butanol and propanol; glycols such as propylene glycol, polypropylene glycol and ethylene glycol; and water can be used.
- the raw material mixture can be prepared by mixing an inorganic compound source powder, an organic binder, a solvent, and additives that are added as necessary using a kneader or the like.
- the green honeycomb molded body has a plurality of flow paths partitioned by partition walls.
- This green honeycomb molded body is obtained by extruding the raw material mixture from an extruder having an outlet opening corresponding to the cross-sectional shape of the partition wall of the green honeycomb molded body, drying it if necessary, and cutting it into a desired length. Can do.
- the firing step is a step of firing the green honeycomb molded body to obtain an unsealed honeycomb fired body.
- a honeycomb fired body having a plurality of flow paths partitioned by partition walls made of porous ceramics can be obtained.
- the honeycomb fired body obtained in the firing step is an unsealed honeycomb fired body in which the flow path is not sealed at both ends and is a through hole.
- Calcination is a process for removing the organic binder in the green honeycomb molded body and the organic additive blended as necessary by burning, decomposition, etc. Up to a temperature rising stage (for example, a temperature range of 150 to 900 ° C.). In the calcination (degreasing) step, it is preferable to suppress the temperature increase rate as much as possible.
- the firing temperature in firing the green honeycomb formed body is usually 1300 ° C. or higher, preferably 1400 ° C. or higher.
- the firing temperature is usually 1650 ° C. or lower, preferably 1550 ° C. or lower.
- the rate of temperature increase up to the firing temperature is not particularly limited, but is usually 1 ° C./hour to 500 ° C./hour.
- Firing is usually carried out in the atmosphere, but depending on the type of raw material powder used and the amount used, it may be fired in an inert gas such as nitrogen gas or argon gas, carbon monoxide gas, hydrogen gas, etc. You may bake in reducing gas like this. Further, the firing may be performed in an atmosphere in which the water vapor partial pressure is lowered.
- an inert gas such as nitrogen gas or argon gas, carbon monoxide gas, hydrogen gas, etc. You may bake in reducing gas like this. Further, the firing may be performed in an atmosphere in which the water vapor partial pressure is lowered.
- Firing is usually performed using a conventional firing furnace such as a tubular electric furnace, a box-type electric furnace, a tunnel furnace, a far-infrared furnace, a microwave heating furnace, a shaft furnace, a reflection furnace, or a roller hearth furnace. It is. Firing may be performed by a batch type or a continuous type. Moreover, baking may be performed by a stationary type or may be performed by a fluid type.
- a conventional firing furnace such as a tubular electric furnace, a box-type electric furnace, a tunnel furnace, a far-infrared furnace, a microwave heating furnace, a shaft furnace, a reflection furnace, or a roller hearth furnace. It is. Firing may be performed by a batch type or a continuous type. Moreover, baking may be performed by a stationary type or may be performed by a fluid type.
- the time required for firing is sufficient as long as it is sufficient to produce ceramics, and varies depending on the amount of the green honeycomb formed body, the type of firing furnace, firing temperature, firing atmosphere, etc., but is usually 10 minutes to 24 hours. is there.
- the sealing step is a step in which one end portion of the flow path in the unsealed honeycomb fired body is sealed using the sealing material of the present embodiment described above to obtain a sealed honeycomb fired body.
- the sealing is performed by filling the opening at one end of the flow paths 70 a and 70 b with a sealing material.
- the sealing is performed, for example, by bringing a mask having a plurality of through holes at desired positions into close contact with one end surface of the honeycomb fired body and supplying a sealing material thereto to only the end of the flow path 70a.
- the sealing material can be filled, and the other end face of the honeycomb fired body can be similarly filled by filling only the end portion of the flow path 70b.
- the method for supplying the sealing material to the flow paths 70a and 70b is not particularly limited.
- the sealing material supplied on the mask may be pushed into the flow path through the through hole of the mask using a squeegee, or may be pushed in by a piston.
- the heating step is a step of heating the sealed honeycomb fired body at 100 to 300 ° C. to obtain a ceramic honeycomb fired body.
- the sealing material filled in the flow path in the sealing process is cured.
- the sealing material of the present embodiment is not used.
- the sealing material can be sufficiently cured by heating at 100 to 300 ° C.
- the adhesiveness of the sealing material after hardening and the partition of a ceramic honeycomb fired body also becomes favorable.
- the heating atmosphere is not particularly limited, but it may be heated in an inert gas such as nitrogen gas or argon gas, or may be heated in a reducing gas such as carbon monoxide gas or hydrogen gas. . In addition, heating may be performed in an air atmosphere or an atmosphere with a reduced water vapor partial pressure.
- the defect material is filled with a sealing material and heated by the same method as in the heating step to cure the sealing material.
- the desired ceramic honeycomb fired body 70 as shown in FIG. 1 can be obtained.
- the obtained ceramic honeycomb fired body can be processed into a desired shape by grinding or the like.
- the partition wall 70c is made of porous ceramics, and this partition wall serves as a filter.
- a fluid is supplied to the ceramic honeycomb fired body 70 from the end portion on the side shown in FIG. 1B (the upper end portion in FIG. 1A), the fluid enters through the open channel 70a. , Moves to the flow path 70b through the porous partition wall 70c, and the opening of the flow path 70b at the end opposite to the side shown in FIG. 1B (the lower end in FIG. 1A) Discharged from.
- the shape of the ceramic honeycomb fired body manufactured by the manufacturing method of the present invention is not particularly limited, and can be any shape depending on the application.
- the outer shape is not limited to a cylinder, but a regular polygonal column such as a regular triangular prism, a square column, a regular hexagonal column, or a regular octagonal column, or a column other than a regular polygonal column, such as a triangular column, quadrangular column, hexagonal column, octagonal column It can be a body.
- the circular shape of the cylinder includes an elliptical shape.
- each flow path is not limited to a square, and can be rectangular, circular, elliptical, triangular, hexagonal, octagonal, etc. Different shapes may be mixed.
- the arrangement of the flow paths is not limited to a square arrangement, and an equilateral triangle arrangement (equilateral-triangular configuration), zigzag configuration (zigzag configuration), etc. in which the center of the flow path is arranged at the apex of the equilateral triangle in the cross section. Can do.
- the ceramic honeycomb fired body manufactured by the manufacturing method of the present invention includes, for example, an exhaust gas filter used for exhaust gas purification of an internal combustion engine such as a diesel engine and a gasoline engine, a catalyst carrier, and a filter used for filtering food and drink such as beer. It can be suitably applied to a selective permeation filter for selectively permeating gas components (for example, carbon monoxide, carbon dioxide, nitrogen, oxygen, etc.) generated during petroleum refining.
- gas components for example, carbon monoxide, carbon dioxide, nitrogen, oxygen, etc.
- Example 1 Preparation of sealing material
- Sumicelam S-10A (trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below) and aluminum magnesium titanate (Al 1.76 Mg 0.12 Ti 1.12) O 5 ) and a powder having a composite phase of aluminosilicate glass (Al 1.82 Mg 0.12 Ti 1.12 O 6.09 -0.1SiO 2 , average particle diameter D50: 23 ⁇ m) and 25% by mass are mixed.
- a sealing material was prepared.
- the powder having a composite phase of aluminum magnesium titanate and aluminosilicate glass corresponds to the aluminum titanate ceramic particles of the present invention.
- raw material powder of aluminum magnesium titanate Al 2 O 3 , TiO 2 , MgO
- ceramic powder having a composite phase of SiO 2 , aluminum magnesium titanate, alumina, and aluminosilicate glass Composition formula at the time of preparation: 41.4 Al 2 O 3 -49.9 TiO 2 -5.4 MgO-3.3SiO 2 , the numerical values in the formula represent a molar ratio
- an organic binder a lubricant, a pore former
- a raw material mixture containing a plasticizer, a dispersant and water (solvent) was prepared. The content of each component in the raw material mixture was adjusted to the following values.
- Al 2 O 3 37.3 parts by weight.
- TiO 2 37.0 parts by mass.
- MgO 1.9 parts by mass.
- SiO 2 3.0 parts by mass.
- Ceramic powder 8.8 parts by mass.
- Pore-forming agent 12.0 parts by weight of starch having an average particle size of 25 ⁇ m obtained from potato.
- Organic binder 5.5 parts by mass of methylcellulose (SM-4000, manufactured by Shin-Etsu Chemical Co., Ltd.), 2.3 parts by mass of hydroxypropyl methylcellulose (60SH-4000, manufactured by Shin-Etsu Chemical Co., Ltd.), totaling 7.8 parts by mass.
- Plasticizer 0.4 part by mass of glycerin DG (manufactured by NOF Corporation).
- Dispersing agent 4.6 parts by mass of Unilube (50MB-72, manufactured by NOF Corporation). Water: 28.3 parts by mass.
- the above-mentioned raw material mixture was kneaded and extruded to produce a honeycomb-shaped green (unfired) molded body (cylindrical body having a diameter of 160 mm ⁇ ) having a plurality of flow paths partitioned by partition walls.
- the green honeycomb molded body was cut to a length of 250 mm, dried by microwaves under normal pressure, and then heated to 600 ° C. at a rate of temperature increase of 10 ° C./hour with an oxygen concentration of the atmosphere of 3% by volume or less
- An aluminum titanate fired body unsealed honeycomb fired body was obtained by firing at 1450 ° C. for 5 hours.
- the cross-sectional shape of the flow path (through hole) of the obtained unsealed honeycomb fired body was a square having a side of 1.2 mm.
- the partition wall thickness was 0.28 mm.
- One end of the flow path of the obtained unsealed honeycomb fired body was sealed with the sealing material.
- a mask in which a plurality of through holes are provided at desired positions is brought into close contact with one end surface of the unsealed honeycomb fired body, a sealing material is supplied thereto, and the sealing material is pushed into the flow path using a squeegee. It went by.
- the sealing is such that the flow path 70 a whose opening at one end is sealed and the flow path 70 b whose opening opposite to the flow path 70 a is sealed are alternately arranged. Went so. Thereby, a sealed honeycomb fired body was obtained.
- the obtained sealed honeycomb fired body was heated in an air atmosphere at 300 ° C. for 1 hour to cure the sealing material, thereby obtaining a target ceramic (aluminum magnesium titanate ceramic) honeycomb fired body.
- Sumicelam S-30A trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below
- aluminum magnesium titanate Al 1.76 Mg 0.12 Ti 1.12) O 5
- Sumicelam S-30A trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics shown in Table 1 below
- aluminum magnesium titanate Al 1.76 Mg 0.12 Ti 1.12) O 5
- powder having a composite phase of aluminosilicate glass Al 1.82
- Sumicelam S-208A trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics shown in Table 1 below
- aluminum magnesium titanate Al 1.76 Mg 0.12 Ti 1.12) O 5
- Example 1 Ceramic honeycomb fired body in the same manner as in Example 1 except that Sumiceram S-18D (trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below) was used alone as a sealing material. Got.
- Sumiceram S-18D trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below
- Sumiceram S-30A trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below
- Table 1 which is a water-based inorganic adhesive
- Example 3 Ceramic honeycomb fired body in the same manner as in Example 1, except that Sumicelam S-208A (trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below), which is an aqueous inorganic adhesive, was used alone as a sealing material. Got.
- Sumicelam S-208A trade name, manufactured by Asahi Chemical Industry Co., Ltd., characteristics are shown in Table 1 below
- Table 1 which is an aqueous inorganic adhesive
- the sealing that cures at a low temperature provides excellent adhesion to the partition walls of the ceramic honeycomb fired body, and provides excellent heat resistance.
- a material and a method for manufacturing a ceramic honeycomb fired body using the material can be provided.
- 70 Ceramic honeycomb fired body, 70a, 70b: flow path, 70c: partition walls.
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Abstract
Description
本実施形態の封口材は、水系の無機接着剤と、チタン酸アルミニウム系セラミックス粒子(粉末)と、を含有するものである。以下、封口材の各構成材料について説明する。
本実施形態のセラミックスハニカム焼成体の製造方法は、原料混合物を押出成形して、隔壁により区画された複数の流路を有するグリーンハニカム成形体を得る押出成形工程と、上記グリーンハニカム成形体を焼成して未封口ハニカム焼成体を得る焼成工程と、上記未封口ハニカム焼成体における上記流路の一方の端部を、上記本実施形態の封口材を用いて封口し、封口ハニカム焼成体を得る封口工程と、上記封口ハニカム焼成体を100~300℃で加熱してセラミックスハニカム焼成体を得る加熱工程と、を有する方法である。また、本発明は、セラミックスハニカム焼成体にカケや亀裂等の欠陥や封口不足箇所が存在する場合、それらの欠陥部位を上記本実施形態の封口材により補修する方法を含む。
(封口材の調製)
水系無機接着剤としてスミセラムS-10A(商品名、朝日化学工業社製、特性は下記表1に示す)を75質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)25質量%とを混合し、封口材を調製した。なお、チタン酸アルミニウムマグネシウムとアルミノシリケートガラスの複合相をもつ粉末は、本発明のチタン酸アルミニウム系セラミックス粒子に相当する。このときの固形分質量比は、S-10A:チタン酸アルミニウムマグネシウム系セラミックス粉末=55:45であった。
グリーンハニカム成形体を形成するために、チタン酸アルミニウムマグネシウムの原料粉末(Al2O3,TiO2,MgO)、SiO2、チタン酸アルミニウムマグネシウムとアルミナとアルミノシリケートガラスとの複合相をもつセラミックス粉末(仕込み時の組成式:41.4Al2O3-49.9TiO2-5.4MgO-3.3SiO2、式中の数値はモル比を表す。)、有機バインダ、潤滑剤、造孔剤、可塑剤、分散剤及び水(溶媒)を含む原料混合物を調製した。原料混合物中の各成分の含有量は下記の値に調整した。
Al2O3:37.3質量部。
TiO2:37.0質量部。
MgO:1.9質量部。
SiO2:3.0質量部。
セラミックス粉末:8.8質量部。
造孔剤:馬鈴薯(potato)から得た平均粒径25μmの澱粉12.0質量部。
有機バインダ:メチルセルロース(SM-4000、信越化学工業社製)5.5質量部、ヒドロキシプロピルメチルセルロース(60SH-4000、信越化学工業社製)2.3質量部、合計7.8質量部。
可塑剤:グリセリンDG(日本油脂社製)0.4質量部。
分散剤:ユニルーブ(50MB-72、日本油脂社製)4.6質量部。
水:28.3質量部。
水系無機接着剤としてスミセラムS-18D(商品名、朝日化学工業社製、特性は下記表1に示す)を75質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)25質量%とを混合し、封口材を調製した。このときの固形分質量比は、S-18D:チタン酸アルミニウムマグネシウム系セラミックス粉末=57:43であった。この封口材を用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤としてスミセラムS-30A(商品名、朝日化学工業社製、特性は下記表1に示す)を75質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)25質量%とを混合し、封口材を調製した。このときの固形分質量比は、S-30A:チタン酸アルミニウムマグネシウム系セラミックス粉末=53:47であった。この封口材を用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤としてスミセラムS-208A(商品名、朝日化学工業社製、特性は下記表1に示す)を75質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)25質量%とを混合し、封口材を調製した。このときの固形分質量比は、S-208A:チタン酸アルミニウムマグネシウム系セラミックス粉末=57:43であった。この封口材を用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤としてスミセラムS-30A(商品名、朝日化学工業社製、特性は下記表1に示す)を50質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)50質量%とを混合し、封口材を調製した。このときの固形分質量比は、S-30A:チタン酸アルミニウムマグネシウム系セラミックス粉末=27:73であった。この封口材を用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤としてスミセラムS-208A(商品名、朝日化学工業社製、特性は下記表1に示す)を50質量%と、チタン酸アルミニウムマグネシウム(Al1.76Mg0.12Ti1.12O5)とアルミノシリケートガラスの複合相を持つ粉末(Al1.82Mg0.12Ti1.12O6.09-0.1SiO2、平均粒径D50:23μm)50質量%とを混合し、封口材を調製した。このときの固形分質量比は、S-208A:チタン酸アルミニウムマグネシウム系セラミックス粉末=31:69であった。この封口材を用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤であるスミセラムS-18D(商品名、朝日化学工業社製、特性は下記表1に示す)を単独で封口材として用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤であるスミセラムS-30A(商品名、朝日化学工業社製、特性は下記表1に示す)を単独で封口材として用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
水系無機接着剤であるスミセラムS-208A(商品名、朝日化学工業社製、特性は下記表1に示す)を単独で封口材として用いた以外は実施例1と同様にして、セラミックスハニカム焼成体を得た。
上記の実施例及び比較例で得られたセラミックスハニカム焼成体について、封口の状態を観察し、密着性を評価した。密着性は、硬化後の封口材とハニカム焼成体の隔壁との間に隙間がなく、両者の密着性が良好である場合を「良好」とし、硬化後の封口材とハニカム焼成体の隔壁との間に隙間がある場合を「不可」として評価した。結果を表2に示す。
上記の実施例及び比較例で得られたセラミックスハニカム焼成体を、空気雰囲気中、1200℃で1時間加熱することにより、硬化した封口材の耐熱性を評価した。耐熱性は、上記加熱条件での耐熱試験後、封口材の融解の有無、封口材と隔壁との密着性、及び、封口材の膨張による隔壁破壊の有無を確認することにより評価した。結果を表2に示す。
Claims (4)
- 水系の無機接着剤と、チタン酸アルミニウム系セラミックス粒子と、を含有する封口材。
- 前記無機接着剤と前記チタン酸アルミニウム系セラミックス粒子との固形分質量比が、99:1~25:75である、請求項1記載の封口材。
- 前記無機接着剤が、コロイド状無機酸化物、無機高分子、耐火物粒子及び水を含む、請求項1又は2記載の封口材。
- 原料混合物を押出成形して、隔壁により区画された複数の流路を有するグリーンハニカム成形体を得る押出成形工程と、
前記グリーンハニカム成形体を焼成して未封口ハニカム焼成体を得る焼成工程と、
前記未封口ハニカム焼成体における前記流路の一方の端部を、請求項1~3のいずれか一項に記載の封口材を用いて封口し、封口ハニカム焼成体を得る封口工程と、
前記封口ハニカム焼成体を100~300℃で加熱してセラミックスハニカム焼成体を得る加熱工程と、
を有するセラミックスハニカム焼成体の製造方法。
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CN2011800519408A CN103153914A (zh) | 2010-10-26 | 2011-10-14 | 封口材料和陶瓷蜂窝烧成体的制造方法 |
EP11836044.5A EP2634163A4 (en) | 2010-10-26 | 2011-10-14 | SEALING MATERIAL AND METHOD FOR MANUFACTURING A CERAMIC BONE BODY OF BEES |
US13/881,297 US20130207323A1 (en) | 2010-10-26 | 2011-10-14 | Sealing material and method for manufacturing ceramic honeycomb fired body |
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2011
- 2011-10-14 EP EP11836044.5A patent/EP2634163A4/en not_active Withdrawn
- 2011-10-14 WO PCT/JP2011/073700 patent/WO2012056905A1/ja active Application Filing
- 2011-10-14 JP JP2011227106A patent/JP5785471B2/ja not_active Expired - Fee Related
- 2011-10-14 US US13/881,297 patent/US20130207323A1/en not_active Abandoned
- 2011-10-14 CN CN2011800519408A patent/CN103153914A/zh active Pending
- 2011-10-14 KR KR1020137012662A patent/KR20140000696A/ko not_active Application Discontinuation
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JPH10299454A (ja) * | 1997-04-30 | 1998-11-10 | Matsushita Electric Ind Co Ltd | 排ガスフィルタ及びその製造方法、それに用いる排ガスフィルタ用封止材 |
WO2005030364A1 (ja) * | 2003-09-29 | 2005-04-07 | Hitachi Metals, Ltd. | セラミックハニカムフィルタ及びその製造方法、並びにセラミックハニカムフィルタ用目封止材 |
WO2007097000A1 (ja) | 2006-02-24 | 2007-08-30 | Ibiden Co., Ltd. | ハニカム成形体用封口装置、封止材ペーストの充填方法、及び、ハニカム構造体の製造方法 |
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Non-Patent Citations (1)
Title |
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See also references of EP2634163A4 |
Also Published As
Publication number | Publication date |
---|---|
JP2012106913A (ja) | 2012-06-07 |
EP2634163A1 (en) | 2013-09-04 |
US20130207323A1 (en) | 2013-08-15 |
EP2634163A4 (en) | 2014-04-16 |
JP5785471B2 (ja) | 2015-09-30 |
KR20140000696A (ko) | 2014-01-03 |
CN103153914A (zh) | 2013-06-12 |
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