WO2005097703A1 - ハニカム構造体の製造方法及びハニカム構造体 - Google Patents
ハニカム構造体の製造方法及びハニカム構造体 Download PDFInfo
- Publication number
- WO2005097703A1 WO2005097703A1 PCT/JP2005/005031 JP2005005031W WO2005097703A1 WO 2005097703 A1 WO2005097703 A1 WO 2005097703A1 JP 2005005031 W JP2005005031 W JP 2005005031W WO 2005097703 A1 WO2005097703 A1 WO 2005097703A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- honeycomb structure
- honeycomb
- cordierite
- mass
- smectite
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 71
- 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 abstract description 49
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 48
- 239000002734 clay mineral Substances 0.000 claims abstract description 39
- 239000011230 binding agent Substances 0.000 claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 239000011734 sodium Substances 0.000 claims abstract description 18
- 239000011575 calcium Substances 0.000 claims abstract description 12
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 10
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 7
- 239000011591 potassium Substances 0.000 claims abstract description 7
- 229910021647 smectite Inorganic materials 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 18
- 150000001768 cations Chemical class 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 7
- 229910001415 sodium ion Inorganic materials 0.000 claims description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910001424 calcium ion Inorganic materials 0.000 claims description 6
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 description 21
- 239000004927 clay Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- AZJYLVAUMGUUBL-UHFFFAOYSA-A u1qj22mc8e Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[F-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O=[Si]=O.O=[Si]=O.O=[Si]=O.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 AZJYLVAUMGUUBL-UHFFFAOYSA-A 0.000 description 14
- 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 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 11
- 230000007547 defect Effects 0.000 description 11
- 239000012778 molding material Substances 0.000 description 11
- 229920000609 methyl cellulose Polymers 0.000 description 10
- 239000001923 methylcellulose Substances 0.000 description 10
- 235000010981 methylcellulose Nutrition 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 238000010792 warming Methods 0.000 description 8
- 230000004580 weight loss Effects 0.000 description 8
- 239000005995 Aluminium silicate Substances 0.000 description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 7
- 235000012211 aluminium silicate Nutrition 0.000 description 7
- 239000013078 crystal Substances 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 239000000454 talc Substances 0.000 description 7
- 229910052623 talc Inorganic materials 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 229910000271 hectorite Inorganic materials 0.000 description 6
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- -1 Norigorusukaito Substances 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005342 ion exchange Methods 0.000 description 5
- 229910052622 kaolinite Inorganic materials 0.000 description 5
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 229910052901 montmorillonite Inorganic materials 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000002276 dielectric drying Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000251556 Chordata Species 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 241001595840 Margarites Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052630 margarite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- 230000008646 thermal stress Effects 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009777 vacuum freeze-drying Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0089—Producing 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
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
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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
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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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
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- 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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- C04B2235/02—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
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- C—CHEMISTRY; METALLURGY
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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
- C04B2235/34—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
- C04B2235/34—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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3445—Magnesium silicates, e.g. forsterite
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
Definitions
- the present invention relates to a method for manufacturing a honeycomb structure and a honeycomb structure. More specifically, by preventing or reducing the generation of CO and harmful gases during firing, environmental pollution and land
- the present invention relates to a high-quality honeycomb structure obtained by this manufacturing method.
- a honeycomb structure made of ceramic having excellent heat resistance and corrosion resistance is used.
- a method for manufacturing such a honeycomb structure for example, a honeycomb structure in which a cordierite-forming material, water, an organic binder, and the like are kneaded, and a forming material having improved plasticity is extruded, dried, and fired.
- a method for producing a body is disclosed (for example, see Patent Document 1).
- the organic binder imparts plasticity and shape retention in order to improve the moldability of the honeycomb structure.
- the moldability improves as the amount of addition increases.
- Clay is required, and as a result, many organic binders have to be added.
- Patent Document 2 a method using kaolinite clay and 0.1% by mass to 15% by mass of smectite clay with respect to the dry mass of the kaolinite clay (see Patent Document 2) has been proposed.
- Patent Document 3 The method for improving the plasticity of kaolinite particles by adsorbing divalent cations on the surface of kaolinite particles by contacting the kaolinite particles with an aqueous solution containing divalent cations.
- Non-Patent Document 1 a method of adding smectite (Non-Patent Document 1) and a method of extruding alumina by adding montmorillonite and hectrite to improve the strength of the molded body (Non-Patent Document 2) is disclosed.
- plastic clay minerals such as bentonite and smectite disclosed in the above-mentioned patent documents and non-patent documents have a main component of SiO, Al2O3, MgO or the like, and have a positive interlayer between layers.
- Patent Document 1 JP-A-2002-292616
- Patent Document 2 JP-T-2002-537217
- Patent Document 3 Patent No. 3215839
- Patent Document 4 Japanese Patent Publication No. 6-104563
- Non-Patent Document 1 Artificial Clay (Journal of the 10th Anniversary of the Artificial Clay Research Society)
- Non-Patent Literature 2 The Use of Montmorillonites as Extrusion Aids for Alumina, Ceram. Engi. Sci. Proc. 12 [1-2] pp. 33-48 (1991)
- the present invention has been made in view of the above-mentioned problems, and has been made to reduce CO and harmful gases during firing.
- the present invention provides the following method for manufacturing a honeycomb structure and a honeycomb structure.
- a forming raw material containing a cordierite forming material and an organic binder is kneaded and formed to prepare a honeycomb-shaped formed body (honeycomb formed body), and the manufactured honeycomb formed body is fired.
- a layered clay mineral having a layer charge (X) of 0.2 ⁇ X ⁇ 2 is further used, and a group consisting of sodium, potassium and calcium contained in the layered clay mineral is used.
- the total amount of at least one selected element is, in terms of oxide, 0.5% by mass or less based on the total amount of the cordierite forming material, and the content ratio of the organic binder is Formation Method for manufacturing a honeycomb structure according to the following 5 parts by weight per 100 parts by weight of charge and the layer-like clay mineral.
- a honeycomb structure obtained by the method according to any one of [1] to [6]. According to the present invention, by preventing or reducing the generation of CO and harmful gases during firing,
- honeycomb structures that can obtain cam structures
- the present invention provides a method and a high-quality honeycomb structure obtained by the manufacturing method.
- a forming material containing a dierite-forming material and an organic binder is kneaded and molded to produce a honeycomb-shaped molded body (honeycomb molded body).
- a layered clay mineral having a layer charge (X) of 0.2 ⁇ X ⁇ 2 is further used, and the sodium, potassium and calcium forces contained in the layered clay mineral are selected from at least one selected from the group consisting of:
- the total amount of elements shall be 0.5% by mass or less based on the total amount of the cordierite-forming material in terms of oxides, and the content of the organic binder shall be reduced to the amount of the dierite-forming material and the layered clay. It is characterized by not more than 5 parts by mass with respect to 100 parts by mass of the total of minerals.
- a dielite forming material and an organic binder are added, and the layer charge (X) is 0.2 ⁇ X ⁇ 2.
- a material further containing a certain layered clay mineral is used.
- Other components include water as a dispersion medium, a dispersant, a pore-forming agent, and the like.
- the dielite-forming material is kneaded as a main component of the forming raw material, and is prepared into a kneaded material (kneaded material). Then, the material is formed into a honeycomb formed body.
- the honeycomb structure is to be constituted as a dierite.
- the dierite-forming material include oxides containing at least one element selected from the group consisting of magnesium, aluminum, and silicon, such as talc, kaolin, alumina, aluminum hydroxide, silica, and magnesia. Hydroxide or carbonate etc. be able to.
- the content ratio of the cordierite forming material is preferably 94.8 to 99.9% by mass based on the total of the cordierite forming material, the layered clay mineral and the organic binder. If the amount is less than 94.8% by mass, problems may occur in terms of thermal expansion and strength of the honeycomb structure. If the amount exceeds 99.9% by mass, it becomes difficult to form a honeycomb structure. Sometimes.
- the organic binder improves the plasticity and moldability of the kneaded material (kneaded material) prepared by kneading the forming raw materials, and also functions as a shape-retaining agent for maintaining the shape of the formed body. You. On the other hand, organic binders cause environmental pollution due to the generation of CO and harmful gases during firing,
- the content in the molding raw material must be kept to a minimum.
- the content ratio of the organic binder is set to 5 parts by mass or less, preferably 4% by mass or less, based on 100 parts by mass of the cordierite-forming material and the layered clay mineral in total. Depending on the application, the amount may be 0 parts by mass (they may not be contained at all).
- Examples of such an organic binder include an organic polymer. Specific examples include hydroxypropoxylmethylcellulose, hydroxypropylmethylcellulose, methinoresenorelose, hydroxyethynoresenorelose, urenoboxinolemethinoresenorelose, and polyvinyl alcohol.
- the organic binder can be used alone or in combination of two or more.
- the content of the organic binder is controlled to 5 parts by mass or less based on 100 parts by mass of the cordierite forming material and the layered clay mineral in total. Therefore, during firing, it promotes environmental pollution and global warming due to the generation of CO and harmful gases,
- the layer charge (X) having both a cordierite-forming function and a plasticity (formability) -imparting function as a forming raw material.
- layer charge refers to a layer charge, which means, for example, the absolute value of the charge per 2: 1 composition formula of a 2: 1 type layered clay mineral represented by smectite.
- a "mineral group” is defined by a layer structure and a layer charge.
- the layer charge (X) is 0.2 ⁇ X ⁇ 2 only for the layer structure called 2: 1 type.
- Table 1 summarizes the relationship between the layer charge and the group of layered clay minerals.
- examples of the layered clay mineral (group) having a layer charge (X) of 0.2 ⁇ X ⁇ 2 in the present invention include smectite, vermiculite, mica, and brittle mica.
- Specific mineral names include montmorillonite, hectorite, vermiculai, muscovite, illite, margarite, and the like.
- Such a layered clay mineral (group) such as smectite, vermiculite, mica, and brittle mica contains at least one element selected from the group consisting of sodium, calcium and potassium.
- the layered clay mineral used in the present invention is preferably contained in the forming raw material in an amount of 0.01 to 25% by mass based on the total amount of the cordierite forming material and 0.05 to 20% by mass. % Is more preferable.
- the layered clay mineral used in the present invention may be used alone or in a combination of two or more.
- the total amount of at least one element selected from the group consisting of sodium, potassium, and calcium contained in the layered clay mineral is calculated as an oxide, based on the total amount of the cordierite forming material. 0.5 mass% or less. If it exceeds 0.5% by mass, the thermal shock resistance of the cordierite finally obtained is deteriorated, and specifically, the coefficient of thermal expansion is increased. [0029]
- the total amount of at least one element selected from the group powers including sodium, potassium, and calcium power is reduced to 0.5 mass% or less in terms of oxide with respect to the total amount of the cordierite forming material.
- An example of a method for performing the method is to selectively use a type of layered clay mineral. In addition, as described later, ion exchange of the “layered clay mineral” and swelling by dispersing the “layered clay mineral” in water can be mentioned.
- layered clay mineral examples include, for example, the use of smectite, bamickillet, and mica, alone or in an appropriate combination of two or more. Can be.
- smectite is mainly composed of aluminum (A1) or magnesium (Mg) and oxygen (O) on and under an octahedral layer, mainly silicon (Si) or aluminum (A1) and oxygen (O).
- Montmorillonite, hectorite Includes clay minerals such as savonite.
- clay containing a large amount of montmorillonite is generally called bentonite.
- smectite is used in the form of a dispersion liquid previously dispersed in water, because it can effectively impart plasticity and moldability to a kneaded material (clay material) even with a small amount. preferable.
- a kneaded material clay material
- those having sodium ions (Na +) between layers are particularly remarkable.
- water swells water enters between layers, and layers are dissociated one by one).
- the viscous dispersion gradually becomes viscous and eventually becomes jelly-like.
- the proportion of the smectite dispersed in water is not particularly limited, but is preferably, for example, 10% by mass or less, more preferably 5% by mass or less.
- the use of Na-type smectite or Ca-type smectite whose interlayer cation is a sodium ion or calcium ion as the smectite can be performed by using It is preferable to improve plasticity and moldability.
- smectite containing both sodium ion and calcium ion as interlayer cation may be used.
- an exchange smectite as an interlayer cation as the Na-type smectite or the Ca-type smectite, as described below.
- sodium or calcium is used as a final fired body (a two-cam structure). Will be present as impurities. If sodium or calcium is mixed into cordierite as an impurity, it will form a heterogeneous phase and impede the low thermal expansion characteristic of cordierite. Therefore, sodium ion (Na +) or calcium ion (Ca 2+ ) is exchanged with magnesium ion (Mg 2+ ) to modify it to smectite containing almost no sodium or calcium, and then to cordierite core. By using it as a forming raw material for producing a cam structure, such property deterioration can be avoided (low thermal expansion property can be maintained).
- a pore-forming agent in order to obtain a porous honeycomb structure, may be further contained in the forming raw material.
- a pore-forming agent has a pore shape of ⁇ , and forms pores of a desired shape, size, and distribution in a honeycomb structure, increases porosity, and increases the porosity.
- a nod-cam structure can be obtained.
- pore formers include graphite, wheat flour, starch, phenolic resin, polymethyl methacrylate, polyethylene, polyethylene terephthalate, and foamed resin (acrylonitrile-based plastic balloon). . These burn themselves out instead of forming pores, especially CO2
- Foamed resin is preferred from the viewpoint of suppressing the generation of 2 and harmful gas and the generation of cracks.
- the total content of the organic binder and the pore-forming agent is determined by the
- It is preferably at most 5 parts by mass, more preferably at most 4 parts by mass with respect to 100 parts by mass.
- the proportion of water to be contained as a dispersion medium varies depending on the forming raw material to be used, and thus it is difficult to determine the ratio uniquely. However, it is difficult to determine that the clay at the time of molding has a suitable hardness. It is preferable to adjust the amount of water so that.
- the method for preparing the kneaded material (kneaded material) by kneading the above-mentioned forming materials is not particularly limited.
- a method using an eder, a vacuum kneader, or the like can be used.
- a kneaded material prepared by kneading the forming raw materials as described above is formed into a no-cam shape, and dried to produce a honeycomb formed body.
- the shape of the honeycomb formed body is not particularly limited.
- a honeycomb formed body having a plurality of cells formed by penetrating between two end faces by a partition wall having a honeycomb shape can be used.
- the ends of the cells are plugged differently at the two end faces!
- There are no particular restrictions on the overall shape of the molded body of the honeycomb and examples thereof include a cylindrical shape, a square pillar shape, and a triangular pillar shape.
- the cell shape (cell shape in a cross section perpendicular to the cell formation direction) of the honeycomb formed body is not particularly limited, and examples thereof include a square, a hexagon, and a triangle.
- a conventionally known forming method such as extrusion molding, injection molding, and press molding, which is not particularly limited, can be used.
- a preferred example is a method of extruding the kneaded material (kneaded material) prepared as described above using a die having a desired cell shape, partition wall thickness, and cell density.
- conventionally known drying methods such as hot air drying, microwave drying, dielectric drying, reduced pressure drying, vacuum drying, and freeze drying can be used.
- a drying method in which hot air drying is combined with microwave drying or dielectric drying is preferable because the entire molded body can be dried quickly and uniformly.
- the nod-cam molded body obtained as described above may be calcined (degreased) to obtain a calcined body.
- the calcination means an operation of burning and removing organic substances (a binder, a dispersant, a pore-forming agent, etc.) in a compact.
- the burning temperature of the organic binder is about 100-300 ° C and the burning temperature of the pore-forming agent is about 200-800 ° C, so that the calcining temperature may be about 200-1000 ° C.
- the calcination time is not particularly limited, but is usually about 110 hours
- the main firing means an operation for sintering and densifying the forming raw material in the calcined body to secure a predetermined strength. Since the firing conditions (temperature and time) vary depending on the type of the forming raw material, appropriate conditions may be selected according to the type. In particular, it is important to fire the molded compact at 1300-1500 ° C. It is more preferable to bake at 1350-1450 ° C. If the temperature is lower than 1300 ° C, a desired crystal phase (cordierite) may not be obtained, and if the temperature exceeds 1500 ° C, melting may occur.
- the honeycomb structure of the present invention is obtained by the above-described method, and contains, as a main component, a high-quality cordierite having few defects and cracks, high strength and low thermal expansion. Structure. Suitable compositions of cordierite include, for example, 2MgO-2Al
- O-5SiO can be mentioned.
- the isostatic fracture strength and the coefficient of thermal expansion were measured.
- a The measuring method of the isostatic fracture strength was based on the automotive standard JASO-M505-87 of the Society of Automotive Engineers of Japan.
- the method for measuring the thermal expansion coefficient was based on IS R1618.
- the honeycomb structure obtained in the example reduces CO and harmful gas generation during firing.
- the weight loss during firing was measured as an indicator of the effect.
- the method for measuring the weight loss during firing is to measure the weight (M) of the honeycomb structure before firing and the weight (M) after firing, and determine the weight.
- kaolin, talc, alumina, aluminum hydroxide and silica as cordierite forming materials, synthetic hectorite (Na type) as layered clay mineral and methylcellulose as organic binder, mix and mold Raw materials.
- synthetic hectorite Na type
- the content ratio of these components was 2% by mass with respect to the total amount of the cordierite forming material, and the other amounts were adjusted so as to be close to the cordierite composition.
- the total amount of cordierite-forming material and synthetic hectorite was 4 parts by mass, followed by a surfactant (1 part by mass for 100 parts by mass of molding material) and water (molding).
- Synthetic hectorite (Na-type) as a layered clay mineral was dispersed in warm water at a ratio of 5% by mass of slurry and allowed to stand still to prepare a synthetic hectorite dispersion.
- Kaolin, talc, alumina, aluminum hydroxide and silica as cordierite-forming materials, methylcellulose as an organic binder, and a synthetic hectorite dispersion were added and mixed.
- the content of these components was 1% by mass based on the total amount of the cordierite-forming material, and the other amounts were adjusted so as to be close to the cordierite composition.
- methylcellulose 2 parts by mass is used for 100 parts by mass of the cordierite-forming material and the synthetic hectorite, followed by a surfactant (1 part by mass for 100 parts by mass of the molding material) and water (100 parts by mass of the molding material). 33 parts by mass (including the amount of water in the synthetic hectorite dispersion) was added to the parts by mass, and the mixture was kneaded to obtain a compact of kneaded clay (kneaded clay). When this was molded into a honeycomb shape by an extrusion molding machine, the molding could be performed without causing clogging of the die and molding failure. The obtained molded body was dried by microwave and hot air, and fired at 1420 ° C for 7 hours.
- Synthetic hectorite (Na type) as a layered clay mineral was dispersed in a 0.25 mol Zl salted magnesium (MgCl) solution, stirred for 5 hours, and then solid-liquid separated by a centrifugal separator. Was washed with water to prepare a hectorite with Mg ion exchange. Kaolin, talc, alumina, aluminum hydroxide and silica as cordierite-forming materials, methyl cellulose as an organic binder, and Mg ion-exchange hectorite were added together and mixed.
- MgCl Zl salted magnesium
- Mg ion-exchange hectorite the content of these components was 6% by mass based on the total amount of the cordierite forming material, and the other amounts were adjusted so as to be close to the cordierite composition.
- methylcellulose 2 parts by mass is used for 100 parts by mass of the cordierite-forming material and the Mg ion-exchange hectorite, and the surfactant (1 part by mass for 100 parts by mass of the molding material) and water ( An appropriate amount of a molding raw material (38 parts by mass with respect to 100 parts by mass) was added and kneaded to obtain a consolidated body of kneaded material (kneaded material).
- Synthetic hectorite (Na type) as a layered clay mineral was added to kaolin, talc, alumina, aluminum hydroxide and silica as cordierite forming materials, and mixed to obtain a forming raw material.
- the content of these components was 2% by mass based on the total amount of the cordierite-forming material, and the other amounts were adjusted so as to be close to the cordierite composition.
- a surfactant (1 part by mass per 100 parts by mass of the molding material) and water (35 parts by mass with respect to 100 parts by mass of the molding material) are added to the mixture, and the mixture is kneaded to consolidate the kneaded material (kneaded material). Got a body.
- the obtained molded article was dried by gradually lowering the humidity of the atmosphere, and was fired at 1420 ° C. for 7 hours.
- cordierite was the main phase.
- the obtained cordierite honeycomb structure has a thermal expansion coefficient of 1.2 X 1 a ⁇ - 6 ⁇ , was comparable to that of Comparative Example 1.
- the isostatic fracture strength of the honeycomb structure was 8 MPa, which was larger than Comparative Example 1.
- the weight loss during firing was 6%, which was significantly smaller than that of Comparative Example 1.
- Methylcellulose as an organic binder was added to and mixed with kaolin, talc, alumina, aluminum hydroxide and silica as cordierite-forming materials.
- the content ratio of methylcellulose was 8 parts by mass with respect to 100 parts by mass of the cordierite forming material.
- a surfactant (1 part by mass per 100 parts by mass of the molding material) and water (33 parts by mass with respect to 100 parts by mass of the molding material) are added to the mixture, and the mixture is kneaded to obtain a compacted body (clay).
- this was molded into a honeycomb shape by an extrusion molding machine, it could be molded without causing clogging of the die or molding defects.
- the obtained molded body was dried with microwaves and hot air and fired at 1420 ° C for 7 hours.
- cordierite was the main phase.
- the obtained cordierite honeycomb structure had a thermal expansion coefficient of 0.9 X ⁇ — 6 ⁇ , and the honeycomb structure had an isostatic fracture strength of 3 MPa.
- the weight loss during firing was 13%.
- a synthetic hectorite (Na type) as a layered clay mineral and methylcellulose as an organic binder were added to kaolin, talc, alumina, aluminum hydroxide and silica as cordierite forming materials and mixed.
- the content of these components in the case of Kutoraito to the synthesis, and 30 mass 0/0 of the total of the cordierite forming material, and adjust the other quantities as close to Cody Eraito composition.
- methylcellulose 2 parts by mass is used for 100 parts by mass of the cordierite-forming material and the synthetic hectorite, followed by a surfactant (1 part by mass for 100 parts by mass of the molding material) and water (molding material).
- the coefficient of thermal expansion of the obtained cordierite honeycomb structure was 3.1 X ⁇ — 6 ⁇ , which was larger than that of Comparative Example 1.
- the isostatic fracture strength of the honeycomb structure was 8 MPa, which was larger than Comparative Example 1.
- the weight loss during firing was 10%, which was smaller than Comparative Example 1.
- the present invention is suitably used in various separation and purification devices that are effective as a measure for preventing environmental pollution and global warming in various fields such as chemistry, electric power, steel and industrial waste treatment.
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Abstract
Description
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EP05721181A EP1736455B1 (en) | 2004-03-31 | 2005-03-18 | Method for manufacturing honeycomb structure |
JP2006511975A JP4745963B2 (ja) | 2004-03-31 | 2005-03-18 | ハニカム構造体の製造方法及びハニカム成形体 |
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US20110293882A1 (en) * | 2010-05-27 | 2011-12-01 | Christopher Lane Kerr | Cordierite compositions for improved extrusion process quality |
US8765049B2 (en) | 2011-11-08 | 2014-07-01 | Corning Incorporated | Control of clay crystallite size for shrinkage management |
US8758671B2 (en) | 2012-04-30 | 2014-06-24 | Corning Incorporated | Control of clay crystallite size for thermal expansion management |
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JP6982555B2 (ja) * | 2018-08-02 | 2021-12-17 | 日本碍子株式会社 | ハニカム構造体の製造方法 |
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Cited By (5)
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JP2010502545A (ja) * | 2006-08-29 | 2010-01-28 | コーニング インコーポレイテッド | 層状ケイ酸塩で改質したコージエライトおよび方法 |
WO2017146087A1 (ja) * | 2016-02-26 | 2017-08-31 | 日本碍子株式会社 | ハニカム構造体の製造方法 |
US20180319114A1 (en) * | 2016-02-26 | 2018-11-08 | Ngk Insulators, Ltd. | Manufacturing method of honeycomb structure |
JPWO2017146087A1 (ja) * | 2016-02-26 | 2019-01-17 | 日本碍子株式会社 | ハニカム構造体の製造方法 |
US10632701B2 (en) * | 2016-02-26 | 2020-04-28 | Ngk Insulators, Ltd. | Manufacturing method of honeycomb structure |
Also Published As
Publication number | Publication date |
---|---|
EP1736455B1 (en) | 2011-08-10 |
US8663545B2 (en) | 2014-03-04 |
JPWO2005097703A1 (ja) | 2008-02-28 |
JP4745963B2 (ja) | 2011-08-10 |
CN1956934A (zh) | 2007-05-02 |
US9193125B2 (en) | 2015-11-24 |
CN100537471C (zh) | 2009-09-09 |
US20050221053A1 (en) | 2005-10-06 |
EP1736455A1 (en) | 2006-12-27 |
EP1736455A4 (en) | 2010-06-23 |
US20140113106A1 (en) | 2014-04-24 |
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