WO2005068398A1 - セラミック構造体の製造方法 - Google Patents
セラミック構造体の製造方法 Download PDFInfo
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- WO2005068398A1 WO2005068398A1 PCT/JP2005/000169 JP2005000169W WO2005068398A1 WO 2005068398 A1 WO2005068398 A1 WO 2005068398A1 JP 2005000169 W JP2005000169 W JP 2005000169W WO 2005068398 A1 WO2005068398 A1 WO 2005068398A1
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- WIPO (PCT)
- Prior art keywords
- foamed resin
- ceramic structure
- foamed
- resin
- weight
- Prior art date
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 100
- 229920005989 resin Polymers 0.000 claims abstract description 100
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000010304 firing Methods 0.000 claims abstract description 13
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 11
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052878 cordierite Inorganic materials 0.000 claims description 10
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000006260 foam Substances 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000012752 auxiliary agent Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000004927 clay Substances 0.000 description 8
- 238000005187 foaming Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000004088 foaming agent Substances 0.000 description 6
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 6
- 238000004898 kneading Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000013585 weight reducing agent Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002276 dielectric drying Methods 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910001753 sapphirine Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009777 vacuum freeze-drying Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
- C04B16/085—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons expanded in situ, i.e. during or after mixing the mortar, concrete or artificial stone ingredients
-
- 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
- C04B35/01—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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
-
- 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
- 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
-
- 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
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
-
- 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
-
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
Definitions
- the present invention relates to a method for producing a porous ceramic structure, and more particularly, to a ceramic structure having a high porosity without using a large amount of flammable powder by mixing foamed resin with a ceramic raw material.
- the present invention relates to a method for producing a ceramic structure from which a body can be obtained.
- Patent Document 2 JP-A-9-77573
- Patent Document 2 JP-A-2002-326879
- the present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to stably maintain the porosity even after the storage period of a foamed foamed resin has exceeded a predetermined period.
- porous ceramic structure that can obtain high ceramic structure Is to provide a law.
- a ceramic material, foamed foamed resin and, if necessary, a molding aid are mixed and then molded to obtain a molded product.
- a method for manufacturing a ceramic structure using a material that accounts for 8% or more of the resin weight is provided.
- a ceramic material, foamed foamed resin, and, if necessary, a molding aid are mixed and then molded to obtain a molded body.
- the weight of the gas contained in the foamed resin when the foamed resin is stored at 40 ° C for 4 weeks as foamed resin is stored at 40 ° C for 4 weeks as foamed resin.
- a method for manufacturing a ceramic structure using a material having a gas weight reduction rate of 30% or less with respect to the gas weight before storage is provided.
- the resin of the outer shell of the foamed resin after foaming is composed of a copolymer of acrylonitrile at 6 Owt% or more and methyl methacrylate at 40 wt% or less. .
- the resin of the outer shell of the foamed resin is composed of a copolymer of acrylonitrile 60 wt% or more and methyl methacrylate 20 wt% or less.
- the copolymer is constituted by a copolymer of methyl methacrylate of 10% by weight or less.
- the gas included in the foamed foamed resin is a C5 component having 5 carbon atoms.
- the obtained ceramic structure is preferably a honeycomb structure, and in particular, as the ceramic structure, a plurality of through-holes opened on the exhaust gas inflow end face and the exhaust gas outflow end face are provided. And a plurality of through-holes alternately sealed at both end faces to provide a honeycomb-type filter.
- the ceramic structure is composed mainly of cordierite, silicon carbide (SiC), and Z or silicon carbide (SiC) and metallic silicon (Si) as main components. ,.
- the added amount of foamed resin in the foamed resin is 0.5 to 10% by weight, more preferably 1 to 5% by weight.
- the average diameter of the foamed resin is preferably from 2 to 200 m, and the shell wall thickness of the foamed resin is preferably from 0.01 to 1.0 m.
- a ceramic structure having a high porosity can be stably obtained even if the storage period of a foamed foamed resin has exceeded a predetermined period. It has excellent effects.
- the foamed resin that has been foamed is mixed with the ceramic raw material. That is, a foaming resin that has already foamed (expanded) and has air bubbles therein, which is different from a conventionally known foaming agent, is mixed with the ceramic raw material.
- the inventor of the present invention has a conventional foamed resin composition having a foamed state.
- the present inventor determined that the resin composition of the outer shell of the foamed foamed resin was specific, so that even when the foamed resin was stored for a predetermined period of time or longer, The present inventors have found that the leakage of gas contained in fat can be reduced (reduced), in other words, that the weight of gas contained in fat maintains a predetermined weight or more of the foamed fat, and the present invention has been completed.
- the gas contained in the foamed resin is A material whose weight is at least 8%, preferably 8 to 12%, particularly preferably 8 to 11% of the weight of the foamed resin is used.
- the weight of the gas contained in the foamed resin when the foamed resin is stored at 40 ° C for 4 weeks as foamed resin is as follows: Gas weight reduction rate of 30% or less, preferably 25% or less, particularly preferably A material having a material of 0% or less is used.
- the resin of the outer shell of the foamed resin having such properties is preferably composed of a copolymer of acrylonitrile 60 wt% or more and methyl methacrylate 40 wt% or less, and acrylonitrile 60 wt% or less. More preferably, it is more preferably composed of a copolymer of at least 90% by weight of acrylonitrile and at most 10% by weight of methyl methacrylate, more preferably at least 20% by weight of methyl methacrylate. This is because the weight loss rate of the contained gas can be effectively suppressed.
- the foamed resin of this material is preferable because it has flexibility and does not collapse by kneading, kneading, or the pressure during Z or molding.
- the addition amount of the foamed resin is preferably 0.5 to 10% of the entire mixture (or the plastic clay), more preferably 11 to 5% by weight.
- the average diameter of the foamed resin used in the present invention is preferably in the range of 2-200 ⁇ m, more preferably 10-100 m. If the average diameter of the foamed resin is smaller than 2 m, the foamed resin enters the gaps between the ceramic raw materials, and the effect of forming pores in the ceramic structure is reduced. If the average diameter of the foamed resin is larger than 200 m, the strength of the foamed resin will be weak, and the effect of the foaming resin will be reduced during kneading, kneading, and Z or molding, and the effect of forming pores will be reduced. .
- the shell wall thickness of the foamed resin is preferably from 0.1 to 1.0 ⁇ m, more preferably from 0.1 to 0.5 ⁇ m. If the shell wall thickness of the foamed resin is less than 0.01 m, the foamed resin will be crushed and the effect of pore formation will be reduced. On the other hand, when the shell wall thickness of the foamed resin is larger than 1. O / zm, the resin weight becomes large, so that there is a problem that cracks are easily generated when the molded body is fired.
- the mixture includes resin powder such as graphite, polyethylene terephthalate (PET), and polymethyl methacrylate (PMMA) as pore formers. And the ability to add molding aids (binders) such as methylcellulose. In order to suppress cracks during firing, the total amount of organic substances
- the content is 20 wt% or less.
- the ceramic structure obtained by the present invention is a honeycomb having a structure in which a plurality of through-holes opened on an exhaust gas inflow end surface and an exhaust gas discharge side end surface are alternately plugged at both end surfaces.
- it is a mold-type structure, it can be suitably used as an exhaust gas filter.
- the shape of the cam-type filter There are no particular restrictions on the shape of the cam-type filter.
- the shape of the end face is a perfect circle or an elliptical cylinder, the shape of the end face is a polygon such as a triangle or a square, and the sides of these cylinders and prisms are rectangular. Any shape, such as a curved shape, may be used.
- the shape of the through-hole is not particularly limited.
- the cross-sectional shape may be any polygon such as a square or an octagon, a perfect circle, or an ellipse.
- the cell density of the filter is more preferably in the range of 250-400 cells Zin 2 , preferably 200 cells Zin 2 or more, from the viewpoint of exhaust gas pressure loss.
- the main component of the ceramic structure is not particularly limited, and any type of slip may be used as long as the material is ceramic.
- Cordierite, silicon carbide (SiC), and Z or calcium carbide may be used. It is preferable that silicon (SiC) and metallic silicon (Si) be the main components.
- Cordierite may be oriented, non-oriented, ⁇ -crystalline, j8-crystalline, or the like.
- the silicon carbide may be either ⁇ -crystalline or j8-crystalline.
- it may contain other components such as mullite, zircon, aluminum titanate, clay-bonded silicon carbide, zircon, spinel, indialite, sapphirine, corundum, titer and the like.
- foamed resin is mixed with the above-mentioned ceramic raw material and molded.
- the molding method may be any known method. However, in order to produce more efficiently and to improve the effect of the foamed resin, kneading is performed after adding a binder, a foamed resin, a plasticizer, and water, followed by kneading. Preferably, soil is formed. Next, force forming using a plastic clay can be performed by an extrusion molding method, an injection molding method, a press molding method, a method of forming a through hole after forming a ceramic material into a cylindrical shape, etc. It is preferable to carry out the extrusion molding method because molding is easy and, for example, cordierite crystals can be oriented to have low thermal expansion. Extrusion molding involves pressing vertically from top to bottom to suppress deformation after molding.
- drying of the formed form can be performed by hot-air drying, microwave drying, dielectric drying, reduced-pressure drying, vacuum drying, freeze-drying, and the like. In view of this, it is preferable to perform the drying step in which hot air drying and microwave drying or dielectric drying are combined.
- the firing of the dried molded body is a force depending on the size of the dried molded body.
- the ceramic raw material is mainly composed of cordierite
- the firing is carried out at 1410-1440 ° C under an air atmosphere. It is preferable to bake at a temperature of
- the ceramic raw material is mainly composed of SiC
- firing is performed in a non-oxidizing atmosphere such as N or Ar to prevent oxidation of SiC. Firing temperature
- the temperature is a temperature at which the silicon nitride powder softens, and firing at a temperature of 1550 to 2000 ° C is preferable.
- the ceramic raw material is mainly composed of SiC and Si, a non-oxidizing atmosphere such as N or Ar is used.
- the drying step and the firing step may be performed continuously.
- AN acrylic-tolyl
- MMA methyl methacrylate copolymer foam resin
- the obtained cylindrical plastic clay was obtained.
- the cylindrical plastic clay was extruded to obtain a honeycomb having a diameter of 300 mm, a partition wall thickness of 300 m, and a number of cells of 300 in- 2 .
- the dried material was cut into a length of 350 mm, and both end portions were coated with cordierite.
- the paste of the toy dangling material was alternately sealed in a houndstooth check.
- a cylindrical clay was prepared in the same manner as in Example 1 except that the resin composition ratio of the outer shell of the foamed resin, the included gas amount, the C5 component content of the included gas, and the storage period were changed as shown in Table 1.
- Table 1 shows the amount of gas included before and after storage, and the porosity of the obtained honeycomb filter.
- a cylindrical clay was prepared under substantially the same conditions as in Example 1 except that the resin composition ratio of the outer shell of the foamed resin and the C5 component content of the included gas were changed as shown in Table 1. This was extruded into a honeycomb and fired in the same manner as in Example 1 to obtain a honeycomb filter. Table 1 shows the porosity and the gas weight reduction rate of the obtained two-cam type filter.
- the included gas weight was 8% or more of the foamed resin weight, and the included gas weight reduction rate.
- the porosity of the ceramic structure manufactured using a foamed resin whose porosity was reduced to 25% or less could be increased to 65% or more by adding 1.9 wt% of the foamed resin.
- Foam Resin Foam Resin Included Foam Resin Foam Resin Storage Included Gas Weight C5 Foam Resin in Included Gas Honeycomb
- Example 1 60 40 12 40 4 9 25 95 1.9 65
- Example 2 80 20 12 40 4 10 17 90 1.9 65
- Example 3 90 10 9 40 4 8 11 90 1.9 67
- Example 4 90 10 13 40 4 11 15 95 1.9 68
- Example 5 90 10 9 20 1 9 0 90 1.9 66 Comparative example 1 50 50 11 40 4 4 64 60 1.9 63 Comparative example 2 50 50 11 40 4 4 64 60 2.4 65
- a method for producing a porous ceramic structure particularly, a ceramic structure having a high porosity without using a large amount of flammable powder by mixing foamed foamed resin with a ceramic raw material can be provided stably.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Materials (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE112005000171T DE112005000171T5 (de) | 2004-01-13 | 2005-01-11 | Verfahren zur Herstellung eines keramischen Gefüges |
US10/584,943 US20090014925A1 (en) | 2004-01-13 | 2005-01-11 | Method for manufacturing ceramic structure |
JP2005517017A JPWO2005068398A1 (ja) | 2004-01-13 | 2005-01-11 | セラミック構造体の製造方法 |
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JP2004005211 | 2004-01-13 | ||
JP2004-005211 | 2004-01-13 |
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WO2005068398A1 true WO2005068398A1 (ja) | 2005-07-28 |
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PCT/JP2005/000169 WO2005068398A1 (ja) | 2004-01-13 | 2005-01-11 | セラミック構造体の製造方法 |
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US (1) | US20090014925A1 (ja) |
JP (1) | JPWO2005068398A1 (ja) |
DE (1) | DE112005000171T5 (ja) |
WO (1) | WO2005068398A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008041548A1 (en) | 2006-09-25 | 2008-04-10 | Hitachi Metals, Ltd. | Method for producing ceramic honeycomb structure |
KR101191806B1 (ko) | 2012-02-20 | 2012-10-16 | 한국기계연구원 | 복합재 방열 기판 및 이의 제조방법 |
JP2012213890A (ja) * | 2011-03-31 | 2012-11-08 | Ngk Insulators Ltd | ハニカム構造体の製造方法 |
Citations (4)
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JPS62286534A (ja) * | 1986-06-04 | 1987-12-12 | Matsumoto Yushi Seiyaku Kk | 熱膨張性マイクロカプセルの製造法 |
WO2002072671A2 (fr) * | 2001-03-14 | 2002-09-19 | Sekisui Chemical Co Ltd | Particules polymeres creuses, procede de production desdites particules, filtre ceramique poreux et procede de fabrication dudit filtre |
JP2003010617A (ja) * | 2001-07-05 | 2003-01-14 | Sekisui Chem Co Ltd | 多孔質セラミックフィルタの製造方法 |
JP2004000901A (ja) * | 2002-03-29 | 2004-01-08 | Ngk Insulators Ltd | 多孔質ハニカム構造体 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3773573A (en) * | 1970-10-15 | 1973-11-20 | Dow Chemical Co | Explosive composition containing monocellular thermoplastic globules and method of preparing same |
JP3186835B2 (ja) * | 1992-05-28 | 2001-07-11 | 松本油脂製薬株式会社 | 熱膨張性マイクロカプセルおよびその製法と膨張方法 |
US6440185B2 (en) * | 1997-11-28 | 2002-08-27 | Noritake Co., Ltd. | Resinoid grinding wheel |
US6103152A (en) * | 1998-07-31 | 2000-08-15 | 3M Innovative Properties Co. | Articles that include a polymer foam and method for preparing same |
JP2003277162A (ja) * | 2002-01-21 | 2003-10-02 | Ngk Insulators Ltd | 多孔質ハニカム構造体、その用途及びその製造方法 |
-
2005
- 2005-01-11 WO PCT/JP2005/000169 patent/WO2005068398A1/ja active Application Filing
- 2005-01-11 DE DE112005000171T patent/DE112005000171T5/de not_active Withdrawn
- 2005-01-11 JP JP2005517017A patent/JPWO2005068398A1/ja active Pending
- 2005-01-11 US US10/584,943 patent/US20090014925A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62286534A (ja) * | 1986-06-04 | 1987-12-12 | Matsumoto Yushi Seiyaku Kk | 熱膨張性マイクロカプセルの製造法 |
WO2002072671A2 (fr) * | 2001-03-14 | 2002-09-19 | Sekisui Chemical Co Ltd | Particules polymeres creuses, procede de production desdites particules, filtre ceramique poreux et procede de fabrication dudit filtre |
JP2003010617A (ja) * | 2001-07-05 | 2003-01-14 | Sekisui Chem Co Ltd | 多孔質セラミックフィルタの製造方法 |
JP2004000901A (ja) * | 2002-03-29 | 2004-01-08 | Ngk Insulators Ltd | 多孔質ハニカム構造体 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008041548A1 (en) | 2006-09-25 | 2008-04-10 | Hitachi Metals, Ltd. | Method for producing ceramic honeycomb structure |
JP2012213890A (ja) * | 2011-03-31 | 2012-11-08 | Ngk Insulators Ltd | ハニカム構造体の製造方法 |
KR101191806B1 (ko) | 2012-02-20 | 2012-10-16 | 한국기계연구원 | 복합재 방열 기판 및 이의 제조방법 |
US8920707B2 (en) | 2012-02-20 | 2014-12-30 | Korea Institute Of Machinery & Materials | Composite heat-dissipation substrate and manufacturing method of the same |
US9611415B2 (en) | 2012-02-20 | 2017-04-04 | Korea Institute Of Machinery & Materials | Composite heat-dissipation substrate and manufacturing method of the same |
Also Published As
Publication number | Publication date |
---|---|
US20090014925A1 (en) | 2009-01-15 |
DE112005000171T5 (de) | 2008-06-26 |
JPWO2005068398A1 (ja) | 2007-12-27 |
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