WO2002011884A1 - Structure céramique alvéolaire - Google Patents
Structure céramique alvéolaire Download PDFInfo
- Publication number
- WO2002011884A1 WO2002011884A1 PCT/JP2001/006632 JP0106632W WO0211884A1 WO 2002011884 A1 WO2002011884 A1 WO 2002011884A1 JP 0106632 W JP0106632 W JP 0106632W WO 0211884 A1 WO0211884 A1 WO 0211884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell
- thickness
- partition wall
- honeycomb structure
- partition
- Prior art date
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- 239000000919 ceramic Substances 0.000 title claims abstract description 70
- 238000005192 partition Methods 0.000 claims abstract description 276
- 210000004027 cell Anatomy 0.000 claims description 512
- 230000002093 peripheral effect Effects 0.000 claims description 35
- 239000003054 catalyst Substances 0.000 claims description 27
- 241000226585 Antennaria plantaginifolia Species 0.000 claims description 14
- 210000002421 cell wall Anatomy 0.000 claims description 11
- 238000000746 purification Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910052878 cordierite Inorganic materials 0.000 claims description 6
- 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 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 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 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 claims 2
- 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 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 229910026551 ZrC Inorganic materials 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 43
- 238000012360 testing method Methods 0.000 description 25
- 230000035939 shock Effects 0.000 description 21
- 230000007423 decrease Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 239000002994 raw material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- FHKPLLOSJHHKNU-INIZCTEOSA-N [(3S)-3-[8-(1-ethyl-5-methylpyrazol-4-yl)-9-methylpurin-6-yl]oxypyrrolidin-1-yl]-(oxan-4-yl)methanone Chemical compound C(C)N1N=CC(=C1C)C=1N(C2=NC=NC(=C2N=1)O[C@@H]1CN(CC1)C(=O)C1CCOCC1)C FHKPLLOSJHHKNU-INIZCTEOSA-N 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012212 insulator Substances 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
- 238000004898 kneading Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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 ceramic honeycomb structure. More specifically, a well-balanced balance between the minus side due to the increase in pressure loss and the decrease in thermal shock resistance, and the plus side due to the improvement in isostatic strength and the high accuracy of the partition wall shape and the outer shape of the honeycomb structure were achieved.
- the present invention relates to a ceramic honeycomb structure suitable as a carrier for automobile exhaust gas purification catalysts and the like.
- the ceramic honeycomb structure of the present invention is also suitable for filtration such as a diesel patillette filter, various chemical reactors such as a catalyst carrier for a fuel cell reformer, and heat exchanger. Background art
- honeycomb catalyst by carrying a catalyst component on the surface of each cell of a ceramic honeycomb carrier (82-cam structure). Since it is higher than that of the honeycomb carrier, a structure in which the honeycomb carrier is gripped in the axial direction has been adopted. In this case, in order to prevent damage near the outer periphery when gripping in the axial direction, the cell partition walls (ribs) on the outer periphery are made thicker than the inside to increase the axial pressure resistance of the honeycomb carrier. I was
- the thickness of the cell walls of the honeycomb carrier is reduced to reduce the weight of the honeycomb carrier, thereby reducing the heat capacity of the catalyst and improving the warm-up characteristics of the purification performance. The movement has begun.
- the thickness of the cell partition and the outer wall of the honeycomb are set and the isostatic strength of the 82-cam structure is improved by reducing the thickness of the cell partition, adopting the outer peripheral surface of the honeycomb carrier, and increasing the exhaust gas temperature.
- increasing the accuracy of the outer shape and the shape of the partition wall has become a major issue.
- Japanese Patent Application Laid-Open No. 54-11 / 1989 proposes a structure in which the thickness of the partition walls is regularly reduced in the direction of the center of the cross section of the honeycomb carrier.
- the partition walls cannot be made thinner over the entire honeycomb carrier, the mass of the 82-cam carrier increases, which is a problem in mechanical characteristics. Also, it is not preferable in terms of pressure loss.
- this ceramic honeycomb structure exhibits a certain effect in preventing chipping at the time of handling, it increases pressure loss and reduces thermal shock resistance, improves isostatic strength, and improves partition shape and shape. It was not always satisfactory in terms of increasing the accuracy of the outer shape of the two-cam structure.
- a ceramic honeycomb structure is formed, for example, by extruding raw materials for koerilite ceramics using a die with grid-like slits, and drying and firing to form a product.
- this was not a problem when the partition wall thickness was as thick as 0.15 mm or more as before, but when the partition wall thickness is reduced, the partition walls are easily deformed during extrusion molding due to the causes described below.
- the results of the isostatic strength test of the obtained fired body have not been satisfactory, sufficient studies have not been conducted. The deformed partition breaks at that portion with a small force.
- the present invention has been made in view of the above-described problems, and has a negative surface due to an increase in pressure loss and a decrease in thermal shock resistance, an increase in isostatic strength, and a height of a partition wall and an outer shape of an eighty two-cam structure. It is an object of the present invention to provide a honeycomb structure that achieves harmony with a plus surface by improving accuracy in a well-balanced manner and is particularly suitable as a carrier for an automobile exhaust gas purification catalyst. Disclosure of the invention
- the present inventor conducted studies including various tests described below, taking into account the recent thinning of the partition walls of the honeycomb carrier. It is not enough to simply increase the thickness of the partition walls that form the cells. It is also necessary to consider the extrudability of the 82 cam structure.
- the partition thickness of the outermost peripheral cell and the internal (basic) cell Not only the relationship with the partition wall thickness but also the basic cell partition wall thickness and the outer wall thickness, taking into account the basic cell partition wall thickness and the outer circumference within a specific range that continues inward from the outermost cell as the starting cell Focusing on the relationship with each partition wall thickness up to one of the end cells of the cell, it was found that the above object can be achieved by designing the honeycomb structure, and completed the present invention. Let .
- isostatic strength does not improve simply by increasing the thickness of the outer wall is that as the thickness of the outer wall increases, the amount of deformation of the ribs of the outer peripheral cells increases in the molded body immediately after extrusion. However, it is considered that the number of deformed bulkheads also increases. This is because, when the outer wall thickness is increased, when the raw material passes through the slits of the die during extrusion, the flow rate of the raw material through the slits forming the outer wall increases, so that the ribs of the outer peripheral cell do not pull toward the outer wall.
- the flow of raw material on the outer wall and the flow of raw material on the partition wall may be unbalanced, but the main factors are that the partition wall itself became thinner and became easier to buckle, and Since the honeycomb structure is deformed by its own weight when the honeycomb structure is received by the jig on the outer peripheral surface after the extrusion molding, the shape of the outer wall and the inner partition wall, particularly the outer peripheral partition wall may be deformed. . This effect is considered to increase as the partition thickness decreases and as the size of the structure increases.
- the buckling strength is basically proportional to the square of the partition wall thickness as shown in the following formula. From this equation, it can be seen that thinning of the partition walls has a very large effect on the strength of the honeycomb carrier.
- the idea of reducing the heat capacity of the outer wall by providing a cutout in the outer wall is meaningful if the outer wall is sufficiently thick.
- the outer wall cannot be thickened without darkness as described above. Conversely, there is a risk of reducing the rigidity of the outer wall.
- Fig. 7 shows the partition wall thickness from the outermost cell as a starting point to any of the 2nd to 20th cells from the basic partition wall thickness (75 ⁇ m).
- the results obtained by measuring the isostatic strength (%) by sequentially increasing the thickness to 150 and 200 m are shown.
- the partition wall thickness of the first to fourth cells is increased, the degree of improvement in isostatic strength is low, and the partition wall thickness of any of the fifth to fifth cells is increased.
- the isostatic strength is remarkably improved, and even if the partition wall thickness of the 5th to 20th cells is increased, the degree of the improvement is not significant. It was found calm. At the first and second thicknesses, no strength improvement was seen at all, but a slight improvement was seen from the third and higher thicknesses, and a clear improvement was seen from the fifth.
- Figure 8 shows that the outermost cell is the starting point cell, and the partition wall thickness (T i ⁇ T rw) of each of the first to third cells is calculated as the ratio of the partition wall thickness (T c) to the basic cell partition wall thickness (T c).
- the results obtained by measuring the isostatic strength (%) by sequentially increasing the thickness from 1.0 to 3.00 as [T rr 13 ) / (T c)] are shown.
- the ratio [(T r to c r 13 ) / (T c)] to the basic cell partition wall thickness (T c) shows a sharp increase in isostatic intensity at 1.10. It was recognized that the degree of the improvement was calm when [(T ri to Tr 13 ) / (T c)] was 2.5.
- FIG. 9 is a partially enlarged view of FIG. 8 '.
- from a sudden improvement in isostatic static strength is [(T i ⁇ T r / (T c)] is far 1. 2
- [(T ri ⁇ T r 13) / (T c)] is preferably 1.20 or more.
- Figure 10 shows that the outermost cell is the starting cell, and the partition wall thicknesses of the 13th cell from the outermost cell (from ! ⁇ to !! ⁇ are calculated as the ratios to the basic cell partition thickness (T c) [
- the results of measuring the pressure loss (%) as (T i ⁇ T rJ / (T c)] by sequentially increasing the thickness from 1.0 to 3.00 are shown.
- T rt to Tr 13 ) / (T c)] is 3.00 Therefore, the pressure drop rapidly increases, so that [(T ri to Tr 13 ) / (T c)] is usually 3.0 or less, and practically 2.50 or less. It is preferable to employ the condition (1), and it is even more preferable to adopt the condition of 1.60 or less.
- Figure 11 shows the basic cell partition thickness (T c) of the outermost cell as the starting cell, and the partition wall thickness of each of the 15th to 15th cells.
- the thickness of the thinnest part is made to match the basic cell partition thickness (Tc), and the pressure loss (%) (Case 4), the ratio [(T / (T c)] of the partition wall thickness ( ⁇ ⁇ ⁇ ) of the outermost cell to the base cell partition wall thickness (T c) is 2.0, Further, the thickness of the partition walls of the second and subsequent cells is changed so that the cross section of each cell partition has a wound shape and becomes gradually thinner inward, and the thickness of the thinnest portion is basically determined.
- the pressure loss (%) is measured in accordance with the cell partition wall thickness (T c) (case 5), as shown in Fig. 11. As can be seen from Fig. 11, in case 1 to case 3, the pressure loss is lower. To become hear, increase in the pressure loss is not When it is convenient, it is preferable to gradually reduce the partition wall thickness of the innermost cell from the outermost cell as in Cases 4 and 5.
- FIG. 12 shows the results of measuring the thermal shock resistance ratio (%) in the case of FIG. 11 instead of measuring the pressure loss.
- the thermal shock resistance ratio can be improved.
- Figure 13 shows the basic cell partition wall thickness of each cell (from the outermost cell as a starting point to any of the 30th cell from there) (Cho! ⁇ ⁇ Cho! ⁇ .).
- the results of measuring the pressure loss (%) with the ratio [(T ri to Tr 3 ) / (T c)] to (T c) being 2.0 are shown.
- the pressure loss increases when the number of thickened cells exceeds the 20th.
- the following ceramic honeycomb structure is provided.
- the ceramic honeycomb structure has a basic wall thickness of the cell partition.
- (Basic cell partition wall thickness) (T c) is T c ⁇ 0.12 mm
- honeycomb outer wall thickness (T s) is T s ⁇ 0.05 mm
- cell aperture ratio (P) Is P ⁇ 80%
- the outermost cell is defined as the first ⁇ origin cell, and from there, to the first end cell in any of the 3rd to 20th range that continues inward.
- the value of each cell partition wall thickness ( ⁇ -!! ⁇ .) Is 1.10 ⁇ between the basic cell partition wall thickness (T c).
- a ceramic honeycomb structure having a relationship of (T r r 3 to 20 ) / T c ⁇ 3.00.
- any of the first end cells in the 3rd to 20th inward range means that the “first origin cell” is the first, that is, the “first origin cell” ”Means a cell that falls into any of the 3rd to 20th ranges. The same applies to the case of the “second end point cell” and the “third end point cell” described later.
- each cell partition wall from the outermost cell as a first starting cell to any of the first end cells in the third to fifteenth range continuing inward therefrom.
- T ri to Tr 3 to 15 has a relationship of 1.10 ⁇ (T rr 3 to 15 ) ZT c ⁇ 3.00 with the basic cell partition wall thickness (T c)
- T c The ceramic honeycomb structure according to the above [1].
- the next cell inwardly adjacent to the first end point cell is defined as a second start point cell, and any second end point cell in the third to fifth range continuing inward therefrom
- the cross section of each cell partition cut along a plane perpendicular to the direction in which the cell (through-passage) is formed is a rectangular shape having a short side as a thickness. The shorter side of the rectangle is changed so that it becomes shorter in order as it becomes the cell partition, and has the shortest short side.
- the next cell inwardly adjacent to the first destination cell is defined as a second source cell, and any second destination cell in the third to fifth range continuing inward therefrom
- Inverted trapezoidal shape in which the cross section of each cell partition taken along a plane perpendicular to the direction in which the cell (through-passage) is formed has a lower bottom on the inner side as the thickness.
- the lower bottom of the inverted trapezoid is gradually changed as the inner cell partition becomes smaller, and the thickness of the cell partition having the shortest lower bottom is made equal to the basic cell partition thickness (T c).
- T c basic cell partition thickness
- each cell partition wall taken along a plane perpendicular to the direction in which the cells (through paths) are formed is a pincushion shape having a lower lower side on the inner side as the thickness,
- the lower side of the pincushion was changed so that it gradually became shorter as it became the inner cell partition, and the thickness of the cell partition having the shortest lower side was matched with the basic cell partition thickness (T c).
- T c basic cell partition thickness
- Thickness of the cell partition of the outermost cell (T r ⁇ is the basic cell partition thickness
- Each cell partition thickness (T i ⁇ T rs ⁇ o) up to any third end cell in the range from 3 to 20 is between the base cell partition thickness (T c) and 1. 10 ⁇ (T r ⁇ r r 3 ⁇ 2. ) ZT c ⁇ 3.0 0, with respect to the direction of formation of the cell (through passage) of each cell partition.
- the cross section cut by a vertical plane is rectangular with short sides as thickness.
- An inverted trapezoidal shape with a lower bottom on the inner side or a pincushion shape with a shorter lower side on the inner side as the thickness, and a rectangular short side, an inverted trapezoidal bottom, or a pincushion shape as the inner cell partition becomes The ceramic material according to [1], wherein the lower side is sequentially changed to be shorter, and the thickness of the cell partition having the shortest short side, the lower bottom, or the lower side is made equal to the basic cell partition thickness (Tc).
- Each of the cell partition wall thicknesses (T i ⁇ T rg ⁇ D) is set between the basic cell partition wall thickness (T c) and 1.10 ⁇ (T ri to Tr 3 to 20 )
- the ceramic honeycomb structure according to any one of [1] to [6], wherein the honeycomb structure has a relationship of / T c ⁇ 2.50.
- Each of the cell partition wall thicknesses (T ri to Tr 3 to 2 ) is set between the basic cell partition wall thickness (T c) and 1.20 ⁇ (d to d to) ZT.
- the ceramic honeycomb structure according to any one of [1] to [6], wherein c has a relationship of c ⁇ 1 ⁇ 60.
- the honeycomb outer wall has a cross-sectional area equivalent to that of the circular shape, and the outermost peripheral cell.
- the first end point cell is defined as a first start point cell
- the first end point cell is defined as a cell extending from the outermost peripheral cell to any cell in the 10th to 40th inward ranges, and each cell partition wall thickness (T r a ⁇ T r 10. 40 ) is, (between T c), 1. 1 0 ⁇ ( T ri ⁇ T r 1 () basic cell wall thickness ⁇ 4.) / T c ⁇ 3. 00 [1] to [: L 0 ]
- the ceramic honeycomb structure according to any one of the above items.
- the cross-sectional shape of the 82-cam outer wall is circular, the diameter is 144 mm or more, and if the cross-sectional shape is other than circular, it has a cross-sectional area equivalent to that of the circular shape, and
- the outer cell is the first starting cell, the first end cell is from the outermost cell to any cell in the 10 th to 30 th range that continues inward, and each cell partition wall thickness is (T! ⁇ ⁇ Ding! ⁇ . ⁇ ⁇ ) is, between the basic cell wall thickness (T c), 1. 1 0 ⁇ (T r E-Ding r 10 ⁇ 30) / ⁇ c ⁇ 3
- the ceramic honeycomb structure according to any one of [1] to [10], which has a relationship of 0.0.
- the cell partition and the 82 cam outer wall are at least one selected from the group consisting of cordierite, alumina, mullite, silicon nitride, aluminum titanium (AT), zirconia and silicon carbide.
- the honeycomb honeycomb structure according to any one of the above [1:] to [12], formed from the material described above.
- a ceramic honeycomb structure having cell deformation If the diameter is 120 mm or less, the first end cell or the third end cell is the third to fifth cells, and if the diameter exceeds 120 mm, the first end cell or the third end cell is the third end cell.
- the ceramic honeycomb structure according to any one of the above [1] to [17], wherein an end cell of the ceramic honeycomb cell is a 6th to 20th cell. The “cell deformation” will be described later.
- a ceramic honeycomb structure suitable as a carrier for an automobile exhaust gas purification catalyst and the like, which achieves a good balance of the above.
- FIG. 1A is a perspective view schematically showing one example of the ceramic honeycomb structure of the present invention.
- FIG. 1 (b) is a plan view schematically showing one example of the ceramic honeycomb structure of the present invention.
- FIG. 2 (a) is a partially enlarged view of a portion A in FIG. 1 (b).
- FIG. 2 (b) is a further enlarged view of FIG. 2 (a).
- FIG. 3 (a) shows the third to fifth regions in the ceramic honeycomb structure of the present invention, in which a cell adjacent to the first end point cell inwardly is defined as a second starting point cell and inward from the second starting cell.
- FIG. 6 is a cross-sectional view schematically showing an example in which the thickness of the cell partition wall having the shortest lower bottom is changed to match the basic cell partition wall thickness (T c).
- FIG. 3 (b) shows that in the ceramic 82 cam structure of the present invention, a cell which is adjacent to the first end point cell inwardly is defined as a second starting point cell, and the cells which continue inward from there.
- each cell partition wall thickness up to one of the second end cells in the fifth range is determined by cutting the cross section of each cell partition wall in a plane perpendicular to the direction in which the cells (through paths) are formed.
- the inner side has a thread winding shape with a short lower side and the inner side of the cell partition, the thickness of the cell partition having the shortest lower side is changed so that the lower side of the pin winding is gradually shortened.
- FIG. 4 is a cross-sectional view schematically illustrating an example in which the thickness is matched with a basic cell partition wall thickness (T c).
- FIG. 3 (c) shows the third to fifth cells that are inwardly continuous from the first end cell in the ceramic honeycomb structure of the present invention, with the cell adjacent to the first end cell inward as the second start cell.
- the thickness of each cell partition wall thickness up to any of the second end cells within the range is defined as the thickness of the cross section of each cell partition wall cut along a plane perpendicular to the cell (through-passage) forming direction.
- a rectangular shape having short sides and an inner cell partition are changed so that the shorter sides of the rectangle are sequentially shortened, and the thickness of the cell partition having the shortest short side is changed to the thickness of the basic cell partition.
- FIG. 4 is a cross-sectional view schematically showing an example in which the height (T c) is matched.
- FIG. 4 is an explanatory diagram schematically showing an example in which the ceramic honeycomb structure (honeycomb carrier) of the present invention is incorporated in a converter container.
- Figure 5 shows cordierite with an outer diameter of 90 mm, a length of 110 mm, a square cell shape, a partition wall thickness of 0.111 mm, and a cell count of 600 cpsi (partition space 1.04 mm).
- An isostatic strength test was performed using a thin-walled honeycomb structure with an outer wall thickness of 0.1 to 0.9 mm. It is a graph which shows the result of having performed.
- FIG. 6 is a graph showing the results of a supercooling thermal shock resistance test in which a carrier having a partition wall thickness of 0.1 mm was heated in an electric furnace for a predetermined time to reach a uniform temperature, and then taken out of the furnace.
- Fig. 7 shows the partition wall thickness from the outermost cell as a starting point to any of the 2nd to 20th cells from the basic partition wall thickness (75 / m). It is a graph which shows the result of having measured the isostatic intensity
- each partition wall thickness of the cell of up to 1 3rd therefrom (T ri ⁇ T r 13), the ratio to the basic cell wall thickness (T c) [ as (T ri ⁇ T r 13) / (T c)]
- T c the ratio to the basic cell wall thickness
- FIG. 9 is a partially enlarged view of FIG. Fig. 10 shows that the partition wall thickness (T ri to Tr 13 ) of each of the first to third cells from the outermost cell as a starting point is calculated as a ratio of the partition wall thickness (T c) to the basic cell partition thickness (T c).
- FIG. 11 shows the basic cell barrier thickness (Tc) of the partition wall thickness of each cell up to the 15th cell from the outermost cell as the starting point.
- the thickness of the partition wall of the second cell is an inverted trapezoidal shape in which the cross section of each cell partition taken along a plane perpendicular to the cell (through-passage) formation direction is the thickness and the inner side has a short lower bottom.
- the bottom of the inverted trapezoid is changed so as to become shorter in order to become the inner cell partition, and the thickness of the cell partition having the shortest lower base matches the basic cell partition thickness (T c).
- the partition thickness of the 16th to 20th cells is further changed to the shape of the cell (through-passage) of each cell partition. Perpendicular to the direction The cross section cut along a flat plane has a thickness in the form of a bobbin with a short lower side on the inner side, and the lower side of the bobbin is gradually shortened as the inner side of the cell partition wall, and has the shortest lower side.
- T c basic cell partition wall thickness
- T r partition wall thickness of the outermost cell is compared with the basic cell partition wall thickness (T c).
- the ratio [(T rj) / (T c)] is set to 2.0, and the partition wall thickness of the second and subsequent cells is set to a plane perpendicular to the cell (through-passage) forming direction of each cell partition.
- the cross section cut in the shape of an inverted trapezoid having a lower bottom with a short inner side as the thickness, and the lower bottom of the inverted trapezoid is changed so that the lower bottom becomes shorter as the inner cell partition becomes smaller.
- the ratio [(T) / (Tc)] of the partition wall thickness ( ⁇ ⁇ ⁇ ) of the outermost cell to the basic cell partition wall thickness (Tc) is set to 2.0, and the second The partition wall thickness of the subsequent cells is determined to be a pincushion shape in which the cross section of each cell partition taken along a plane perpendicular to the cell (through-passage) forming direction has a lower side having a short inner side as a thickness, and As the inner cell partition wall becomes smaller, the lower side of the pincushion is gradually shortened, and the thickness of the cell partition wall having the shortest lower side is made equal to the basic cell partition wall thickness (Tc) to reduce the pressure loss (% ) Are measured (case 5).
- FIG. 12 is a graph showing the result of measuring (%) instead of measuring the pressure loss in the case of FIG. Fig. 13 shows the basic cell partition thickness (from ⁇ to ! ⁇ .) Of each cell from the outermost cell as a starting point to any cell up to the 30th cell.
- 9 is a graph showing the results of measuring pressure loss (%) with the ratio [(T rr 30 ) / (T c)] to T c) being 2.0.
- Fig. 14 shows the ratio of the partition wall thickness (D! ⁇ ⁇ D) from the outermost cell to any of the 20th cells from the outermost cell to the basic cell partition thickness (Tc).
- FIG. 15 is an explanatory diagram schematically showing the concept of cell deformation.
- FIG. 16 is an explanatory diagram showing the relationship between the diameter of a ceramic honeycomb structure and improvement in strength.
- FIG. 17 is a perspective view schematically showing a corrugated cell partition wall having a corrugated shape in a cell (through passage) formation direction.
- FIG. 18 is an explanatory diagram schematically showing a test apparatus used for the isostatic strength test.
- FIG. 19 is an explanatory diagram showing a cooling / heating cycle of 1200 ° C. X cycle used in the test method in the isostatic strength test.
- the ceramic honeycomb structure of the present invention includes a cell partition (rib) forming a composite of a plurality of cells (penetration paths) adjacent to each other, and is located at the outermost periphery of the cell composite.
- a ceramic honeycomb structure composed of a honeycomb outer wall surrounding and holding the outermost peripheral cell, wherein a basic wall thickness of the cell partition (basic cell partition thickness) (T c) is T c ⁇ 0 12 mm, the thickness of the honeycomb outer wall (T s) is T s ⁇ 0.05 mm, the cell opening ratio (P) is P ⁇ 80%, and the outermost peripheral cell is the first starting point.
- Each cell partition thickness (T r to Tr 3 to 2 D ) from the first to the first end cell in the 3 to 20th range which continues inward therefrom is a basic cell. between the cell partition wall thickness (T c), and having a relationship of 1. 1 0 ⁇ (T r! ⁇ T r 3 ⁇ 20) / T c ⁇ 3. 0 0.
- the basic cell partition wall thickness (Tc) of the cell partition wall constituting the honeycomb structure is 0.12 mm or less, preferably 0.07 mm.
- the honeycomb outer wall thickness (T s) is 0. 0 5 mm or more, preferably 0.1 mm or more, and under the condition that the aperture ratio (P) of the basic cell portion is 80% or more, the outermost peripheral cell is used as the first starting cell and continues inward from there. 3 to 15
- Each cell partition thickness (T i ⁇ T rss) up to any of the first end cells in the fifth range is between 1 and the base cell partition thickness (T c). .
- FIG. 1A is a perspective view schematically showing an example of the ceramic honeycomb structure of the present invention
- FIG. 1B is a plan view thereof.
- the ceramic honeycomb structure 1 is composed of a composite of a plurality of through-holes (cells) 3 partitioned by cell partition walls 2.
- the outermost peripheral cell located at the outermost periphery of the composite of the cells 3 is surrounded and held by the honeycomb outer wall 4.
- FIG. 2 (a) is a partially enlarged view of a portion A in FIG. 1 (b), and FIG. 2 (b) is a further enlarged view of FIG. 1 (b).
- the outermost cell (first starting cell). 8 is closest to the outer wall 4, and the outermost cell (first starting cell) 8
- the second cell 9 is continuous inside.
- the partition wall thickness of the outermost peripheral cell (first starting cell) 8 is denoted by ⁇ ⁇
- the partition wall thickness of the second cell 9 is denoted by Tr 2 .
- Tr 3 to 15 the thickness of the partition wall of any of the cells in the range 3 to 15 (first end cell) 10 is denoted by Tr 3 to 15 .
- What The cell partition 2 is roughly classified into an outer cell partition 2a and a basic cell partition 2b.
- each cell partition wall thickness (from the outermost cell as a starting point to any one of the terminal cells within the third to fifteenth range continuing inward from the outermost cell). ! ⁇ ⁇ Ding! ⁇ and ⁇ ⁇ ), the relationship between the basic cell wall thickness (T c), 1. 1 0 ⁇ (T ri ⁇ T r 3 ⁇ 15) / T c ⁇ 3. 0 0 It is specified as follows.
- each cell partition wall thickness from the outermost cell (first cell) to any one of the third to fifteenth cells inwardly continues.
- T ri ⁇ T r 3 ⁇ 15 the basic cell wall thickness (T c) is thicker in a specific proportion with respect to, the 1-2-th cell partition wall thickness of (T ri ⁇ T r 2) Even if the thickness is increased at a specific ratio, no improvement in the isostatic strength or the degree of external contour (partition shape accuracy) is observed. If the thickness of the partition from the 15th to the inner wall is increased at a specific ratio, the pressure will increase.
- the heat capacity also increases, which may adversely affect the warm-up performance of the catalyst during cold start.
- the next cell adjacent to the first end point cell on the inner side is referred to as the second starting point cell.
- the thickness of each cell partition from the second to the second end cell in the third to fifth range that continues inward from there, and the cell (through-pass) of each cell partition
- the cross section cut along a plane perpendicular to the forming direction is a rectangular shape with a short side as the thickness (Fig.
- the inner side has a pincushion shape with a short lower side (Fig. 3 (b)), and the shorter the rectangular side, the lower bottom of the inverted trapezoid, or the lower side of the pincushion shape gradually decreases as the inner cell partition becomes.
- the ratio of shortening may be in the range of 1.10 to 3.00
- the thickness of the cell partition having the shortest short side, lower bottom, or lower side is defined as the basic cell partition thickness (Tc). It is preferable to match with. With this configuration, the pressure loss and the thermal shock resistance ratio can be improved.
- a portion where the outermost peripheral cell partition walls of the honeycomb structure and the outer wall are in contact is built up (contact buildup). Or where adjacent partition walls come into contact with the outer wall while the space between the partition walls is narrowed, and at least between those partition walls, the inside of the outer wall is padded (V-shaped connection padding), and the height of the partition wall (rib) is increased.
- the thickness of the cell partition wall may be made relatively thin while maintaining effects such as improvement in accuracy and improvement in isostatic strength.
- the corner of the cell is formed so as to have a radius of curvature of 1.2 mm or less, and the intersection of the cell partition wall and the honeycomb outer wall is 1.2 mm or less in curvature. It is preferable to form it so as to have a radius.
- the cell partition wall thickness (T ri ) of the outermost peripheral cell is between the above-mentioned basic cell partition wall thickness (T c) and 1.10 ⁇ T r T c ⁇ 3. 0 and the outermost cell is the third starting cell, and each cell partition from there to any third end cell in the 3rd to 20th range
- the relationship between the thickness (T i ⁇ T rs ⁇ ) and the basic cell partition thickness (T c) is 1.1 0 ⁇ (T r! T rg ⁇ o) / ⁇ c ⁇ 3.00.
- the cross section of each cell partition cut along a plane perpendicular to the direction in which the cell (through path) is formed has a short side as a thickness.
- each of the cell partition wall thicknesses (c 1 to c! ⁇ .) Is defined as 1.10 ⁇ (T ri ⁇ T r 5 ⁇ 20) / ⁇ c ⁇ 2. 5 0, more 1. having 2 0 ⁇ (T r, ⁇ T r 3 ⁇ 2.) / T c ⁇ 1. 6 0 relationship It is practically preferable that the conditions are further limited as described above in consideration of the pressure loss.
- the shape of the cross section of the cell used in the present invention is not particularly limited, and may be, for example, triangular or more polygonal. In particular, it is preferably one of a square, a rectangle, and a hexagon.
- examples of the cross-sectional shape of the honeycomb outer wall used in the present invention include a circle, an ellipse, an ellipse, a trapezoid, a triangle, a quadrangle, a hexagon, and a left-right asymmetric deformed shape.
- circles, ellipses, and ellipses are preferred.
- each cell Le partition wall thickness T ri ⁇ T r 10 ⁇ 4.
- the (T rr 10 ⁇ 3.) Preferably the (T rr 10 ⁇ 3.) , Based on the The ratio to the cell partition wall thickness (Tc) ( ⁇ ⁇ ⁇ ⁇ ⁇ r 1 () ⁇ 4. ) / Tc, preferably (T rr 10 ⁇ 3. ) / T c, usually 1.10 To 3.00, practically 1.10 to 2.50, and more practically 1.20 to 1.60.
- cell partition walls and the honeycomb outer wall used in the present invention include, for example, a small number selected from the group consisting of cordierite, alumina, mullite, silicon nitride, aluminum titanium (AT), zirconia and silicon carbide. Both are formed from one kind of material.
- FIG. 4 is an explanatory view schematically showing an example in which the honeycomb carrier of the present invention is incorporated in a converter container.
- the honeycomb carrier 13 is held in the converter container 11 by the ring 12 on the outer peripheral surface thereof.
- the ring 12 is not particularly limited, but is usually made of a metal mesh. It is preferable that a buffer member 14 such as a mat or cloth is interposed between the converter container 11 and the outer peripheral surface of the honeycomb carrier 13.
- the performance of the honeycomb structure obtained in the examples was evaluated by the following method.
- the honeycomb carrier After placing the honeycomb carrier at room temperature in an electric furnace maintained at a predetermined temperature higher than room temperature and holding it for 20 minutes, remove the carrier onto the refractory brick, observe the appearance, and tap the outer periphery of the carrier with a metal rod. is there. If no cracks were observed on the carrier and the tapping sound was a metallic sound and there was no dull sound, the test passed, and the same test was rejected each time the temperature in the electric furnace was raised in 50 ° C steps. Repeat. If the test fails at a temperature of 950 ° C above room temperature, the thermal shock resistance will be a difference of 900 ° C.
- the contour of the outer periphery was measured using a three-dimensional measuring device.
- a converter equipped with a honeycomb structure with a catalyst was attached to a 2-liter 4-cylinder engine, and the pressure difference between the converter inlet and outlet was measured to determine the pressure loss.
- a kneading raw material of talc, kaolin, alumina, water, and a binder is extruded and fired to form a square cell structure with a diameter of 106 mm, a length of 15.5 mm, and a honeycomb outer wall thickness of 0.
- a cordierite-based honeycomb structure with a diameter of 2 mm and an aperture ratio of 80% or more was fabricated.
- the cell structure, the basic partition wall thickness, the number of outer peripheral thickened cells, the partition wall thickness of the outer peripheral thickened cell, and the ratio of the thickened partition wall thickness to the basic partition wall thickness are changed as shown in Table 1.
- Table 1 Produced. With respect to the obtained honeycomb structure (carrier), an isostatic strength test, a thermal shock resistance test, a pressure loss test, and a contour degree test were performed. The results are shown in Tables 1-4.
- Example 18 the outermost cell was used as a starting cell, and the partition wall thickness of each of the 15th to 15th cells was set to 0.150 mm. Furthermore, the partition thickness of the 16th to 20th cells is changed so that the cross section of each cell partition has an inverted trapezoidal shape and becomes gradually thinner inward, and the thickness of the thinnest part is set to 0. This is the case where the basic cell partition wall thickness (Tc) is set to 0.75 mm.
- Example 19 shows a case in which the cross section is likewise a pincushion shape and is gradually changed inward toward the inside.
- the outermost cell was used as a starting cell, and the thickness of each cell partition from the outermost cell to the 20th cell was changed.
- each cell partition was inverted trapezoidal or pincushion.
- T c basic cell partition wall thickness
- Example 2 6 0 055 1.1 10 ⁇ ⁇ ⁇ Pj Huai Inl ⁇ f
- Example 2 7 "0.060 1.2 10 Slightly higher ⁇ ⁇ .
- Example 3 1 0.080 1.6 10 Improvement Improvement Example 3 2 0.085 1.7 10 Improve Increase Increase Slightly decrease Example 3 3 0.090 1.8 10 Improve Increase Increase Slightly decrease Example 34 "0.100 2.0 10 Improve Increase Increase Decrease Example 3 5 0.125 2.5 10 Improve Increase Increase Decrease Example 3 6 0.150 3.0 10 Improve Increase Increase Slightly decrease Comparative Example 9 0.175 3.5 10 Improve Improve Sudden increase Dramatic decrease Example 3 7 0.080 1.6 2 No improvement-No improvement Slight increase Same as standard Example 3 8 5 Slight improvement Slight improvement Slight improvement
- Comparative Example 1 1 5.0 / 200 0.125 0.125 1.0 0 Standard Standard Standard Standard Comparative Example 1 2 5.0 / 200 0.125 0.200 1.6 10 Improvement Improvement Increase Same as Standard Comparative Example 1 3 4.5 / 300 0.115 0.115 1.0 0 Standard Standard Standard Standard Example 43 4.5 / 400 0.115 0.175 1.52 10 Improvement Improvement Increase Same as standard Comparative example 1 4 4.0 / 400 0.100 0.100 1.0 0 Standard Standard Standard Standard Example 44 44/400 0.100 0.150 1.5 10 Improvement Improvement Increase Same as standard Comparative example 1 5 3.5 / 400 0.090 0.090 1.0 0 Standard Standard Standard Standard Standard '' Comparative example 1 6 3.5 / 400 0.090 0.135 1.50 2 Not improved Not improved Slightly equivalent to standard Example 4 5 3.5 / 400 0.090 0.135 1.50 10 Improved Improved Equal to standard Example 46 3.5 / 400 0.090 0.135 1.50 15 Improvement Improvement Increase Same as standard Comparative example 1 7 3.5 / 400 0.090 0.135 1.50 25 Improvement Improvement Rapid increase S
- Tables 1 to 4 show that good results can be obtained when the requirements of the present invention are satisfied. Similar results were obtained for triangular cells, hexagonal cells and other various cell structures.
- each cell partition wall thickness ( T i ⁇ T rs ⁇ ⁇ o) is the relationship between the basic cell partition wall thickness (T c) and 1.10 ⁇ (T ri to Tr 3 to 20 ) / T c ⁇ 3.00 If it has, it is confirmed to be effective.
- cell deformation means a state in which the cell partition wall (rib) is deformed with respect to the central axis, as shown in FIG.
- the deformation amount is 1.1 to 5.0 times the cell partition (rib) thickness.
- the ceramic honeycomb structure has “cell deformation”, if the diameter is 12 O mm or less, the first end cell or the third end cell is any of the third to fifth cells. If the diameter of the cell exceeds 120 mm, a sufficient strength effect will be obtained if the first end cell or the third end cell is any of the 6th to 20th cells. It was confirmed that it could be obtained. That is, as shown in Fig. 16, when the diameter of the honeycomb structure is 12 Omm or less, when the first end point cell or the third end point cell corresponds to the third to fifth cells.
- the honeycomb structure provided with the corrugated cell partition walls having the corrugated shape in the cell (through-passage) forming direction at the boundary of! ⁇ It was confirmed that it had better thermal shock resistance than the one with the normal cell partition without it. That is, at least a place including a boundary portion having a waveform shape was heated at 1200 ° C. for 5 minutes in a later-described pana test (a test for observing the presence or absence of cracks), and cooling was performed for 10 minutes. After cycling, the honeycomb structure with corrugated cell partition walls has better thermal shock resistance (less cracks) than the one with regular cell partition walls without corrugated shape. Was confirmed.
- the shape of the honeycomb structure used was the same material and shape as those used in Example 1.
- the test device shown in Fig. 18 was used.
- This device is a Marmont Exhaust Chemistry Yuichi Model No. 3 or its equivalent, or a hydraulic isostatic testing device manufactured by NGK Insulators, Ltd. or its equivalent.
- this device has a configuration including a main bar ⁇ "-101, a pilot burner 102, a combustion chamber 103, a bypass 104, and a holder 105.
- the combustion chamber 103 is supplied with LPG 106 and heating air 107, and is ignited by a super plug 108 for combustion, and a sample 110 in a holder 105.
- thermocouples 109 are set in the vicinity of them, and the bypass 104 is used for heating air 107 and cooling. It is used to add a cooling cycle to the sample 110 by switching between the sample air 110 and the sample air 110.
- thermocouple 109 was set at a distance of 5 mm upstream from the center of the end face of the sample 110 on the gas inlet side.
- the sample 110 was subjected to a cooling and heating cycle of 1200 ⁇ C ⁇ 10 cycles shown in FIG.
- the gas flow rate during heating was 1. ON m 3 Z minutes.
- the honeycomb structure of the present invention can be suitably used as a carrier for a catalyst or the like, in particular, a carrier for a catalyst for reducing exhaust gas of various automobiles.
- the honeycomb structure of the present invention may be used for filtration such as a diesel particulate filter, or for various chemical reactors such as a catalyst carrier for a fuel cell reformer, and a heat exchanger. It can be suitably used as an application.
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Description
Claims
Priority Applications (5)
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CA002386107A CA2386107C (en) | 2000-08-03 | 2001-08-01 | Ceramic honeycomb structure |
EP01954412.1A EP1360991B1 (en) | 2000-08-03 | 2001-08-01 | Ceramic honeycomb structure |
US10/089,692 US6656564B2 (en) | 2000-08-03 | 2001-08-01 | Ceramic honeycomb structure |
AU2001276713A AU2001276713A1 (en) | 2000-08-03 | 2001-08-01 | Ceramic honeycomb structure |
JP2002517210A JP4473505B2 (ja) | 2000-08-03 | 2001-08-01 | セラミック製ハニカム構造体 |
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EP (1) | EP1360991B1 (ja) |
JP (1) | JP4473505B2 (ja) |
CN (1) | CN1213809C (ja) |
AU (1) | AU2001276713A1 (ja) |
CA (1) | CA2386107C (ja) |
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WO2004014553A1 (ja) * | 2002-08-08 | 2004-02-19 | Ngk Insulators, Ltd. | セラミックハニカム構造体 |
EP1508354A1 (en) * | 2002-05-30 | 2005-02-23 | Ngk Insulators, Ltd. | Honeycomb structural body |
JP2005274179A (ja) * | 2004-03-23 | 2005-10-06 | Hitachi Metals Ltd | ハニカム体の検査装置 |
JP2007519509A (ja) * | 2003-12-29 | 2007-07-19 | コーニング インコーポレイテッド | 高強度薄壁ハニカム |
WO2009141885A1 (ja) * | 2008-05-20 | 2009-11-26 | イビデン株式会社 | ハニカム構造体 |
EP2236205A2 (en) | 2009-03-31 | 2010-10-06 | NGK Insulators, Ltd. | Honeycomb Catalyst article |
JP2011173421A (ja) * | 2010-02-25 | 2011-09-08 | Corning Inc | セラミックハニカム体および製造方法 |
WO2012043758A1 (ja) * | 2010-09-29 | 2012-04-05 | 日本碍子株式会社 | 熱交換部材 |
JP2014181143A (ja) * | 2013-03-18 | 2014-09-29 | Ngk Insulators Ltd | ハニカム構造体 |
EP2853708A1 (en) | 2013-09-26 | 2015-04-01 | NGK Insulators, Ltd. | Honeycomb structure |
DE10243359B4 (de) * | 2001-09-19 | 2016-02-18 | Ngk Insulators, Ltd. | Strangpressform zum Wabenstrangpressen und Herstellungsverfahren dafür |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54110189A (en) * | 1978-02-17 | 1979-08-29 | Ngk Insulators Ltd | Ceramic honeycomb structure |
US4233351A (en) * | 1978-05-18 | 1980-11-11 | Nippon Soken, Inc. | Ceramic honeycomb structure |
EP0867222A2 (en) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Ceramic honeycomb structural body with different wall thicknesses |
JPH11277653A (ja) * | 1998-03-31 | 1999-10-12 | Ngk Insulators Ltd | 高強度薄壁ハニカム構造体 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55147154A (en) * | 1979-05-07 | 1980-11-15 | Ngk Spark Plug Co Ltd | High-strength honeycomb structure |
US5641332A (en) * | 1995-12-20 | 1997-06-24 | Corning Incorporated | Filtraion device with variable thickness walls |
DE69735618T2 (de) * | 1996-08-07 | 2007-05-03 | Denso Corp., Kariya | Keramische wabenstruktur und verfahren zu deren herstellung |
JP4159155B2 (ja) * | 1998-01-22 | 2008-10-01 | 株式会社日本自動車部品総合研究所 | セラミックハニカム構造体および押出金型 |
-
2001
- 2001-08-01 AU AU2001276713A patent/AU2001276713A1/en not_active Abandoned
- 2001-08-01 US US10/089,692 patent/US6656564B2/en not_active Expired - Lifetime
- 2001-08-01 JP JP2002517210A patent/JP4473505B2/ja not_active Expired - Lifetime
- 2001-08-01 CA CA002386107A patent/CA2386107C/en not_active Expired - Fee Related
- 2001-08-01 WO PCT/JP2001/006632 patent/WO2002011884A1/ja active Application Filing
- 2001-08-01 CN CN01803006.8A patent/CN1213809C/zh not_active Expired - Lifetime
- 2001-08-01 EP EP01954412.1A patent/EP1360991B1/en not_active Expired - Lifetime
-
2002
- 2002-04-04 ZA ZA200202642A patent/ZA200202642B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54110189A (en) * | 1978-02-17 | 1979-08-29 | Ngk Insulators Ltd | Ceramic honeycomb structure |
US4233351A (en) * | 1978-05-18 | 1980-11-11 | Nippon Soken, Inc. | Ceramic honeycomb structure |
EP0867222A2 (en) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Ceramic honeycomb structural body with different wall thicknesses |
JPH11277653A (ja) * | 1998-03-31 | 1999-10-12 | Ngk Insulators Ltd | 高強度薄壁ハニカム構造体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1360991A4 * |
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WO2004014553A1 (ja) * | 2002-08-08 | 2004-02-19 | Ngk Insulators, Ltd. | セラミックハニカム構造体 |
JP2007519509A (ja) * | 2003-12-29 | 2007-07-19 | コーニング インコーポレイテッド | 高強度薄壁ハニカム |
JP4618532B2 (ja) * | 2004-03-23 | 2011-01-26 | 日立金属株式会社 | ハニカム体の検査装置 |
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WO2009141885A1 (ja) * | 2008-05-20 | 2009-11-26 | イビデン株式会社 | ハニカム構造体 |
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JP2011173421A (ja) * | 2010-02-25 | 2011-09-08 | Corning Inc | セラミックハニカム体および製造方法 |
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JP2015085321A (ja) * | 2013-09-26 | 2015-05-07 | 日本碍子株式会社 | ハニカム構造体 |
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JP2016055231A (ja) * | 2014-09-08 | 2016-04-21 | イビデン株式会社 | ハニカム焼成体及びハニカムフィルタ |
WO2016039325A1 (ja) * | 2014-09-08 | 2016-03-17 | イビデン株式会社 | ハニカム焼成体及びハニカムフィルタ |
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JP2019130460A (ja) * | 2018-01-30 | 2019-08-08 | 株式会社デンソー | ハニカム構造体 |
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JP7069753B6 (ja) | 2018-01-30 | 2023-12-20 | 株式会社デンソー | ハニカム構造体 |
JP2019198819A (ja) * | 2018-05-16 | 2019-11-21 | 日本碍子株式会社 | ハニカム構造体 |
JP7181704B2 (ja) | 2018-05-16 | 2022-12-01 | 日本碍子株式会社 | ハニカム構造体 |
Also Published As
Publication number | Publication date |
---|---|
ZA200202642B (en) | 2003-04-04 |
US20020192426A1 (en) | 2002-12-19 |
AU2001276713A1 (en) | 2002-02-18 |
US6656564B2 (en) | 2003-12-02 |
CA2386107A1 (en) | 2002-02-14 |
JP4473505B2 (ja) | 2010-06-02 |
EP1360991A1 (en) | 2003-11-12 |
CN1392803A (zh) | 2003-01-22 |
CN1213809C (zh) | 2005-08-10 |
EP1360991B1 (en) | 2013-07-17 |
EP1360991A4 (en) | 2004-04-07 |
CA2386107C (en) | 2005-07-05 |
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