KR101456257B1 - Process for Preparation of Porous Ceramic Filter Having Improved Bonding Strength by Addition of Ground Layer - Google Patents

Abstract

A method for producing a porous ceramic filter by bonding a plurality of ceramic segments to each other, comprising the steps of applying a base material to the surface of a ceramic segment and drying the same to form a layer ("base layer"), (A) and a ceramic powder (b) having a particle diameter smaller than that of the segment surface pores. The ceramic powder (a) and the ceramic powder (b) At the same time.

According to the method of the present invention, the bonding layer constituent components such as the inorganic binder or the organic binder are sucked into the porous structure of the segment, thereby preventing the occurrence of macropores or cracks therefrom, , Can increase the chemical strength and can provide a very good bonding force between the bonded segments.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a porous ceramic filter having improved bonding strength,

1 is a schematic diagram of a ceramic segment for a general porous ceramic filter;

2 is a schematic diagram of a filtering process of a general porous ceramic filter;

3 is a partial enlarged view of a porous ceramic filter adhered by a conventional method;

Figures 4A, 4B, 4C and 4D are schematic diagrams of the manufacturing process of a porous ceramic filter according to one embodiment of the present invention;

5 is a partial enlarged view of a bonded porous ceramic filter according to one embodiment of the present invention before sintering;

DESCRIPTION OF THE RELATED ART [0002]

100: Ceramic segment

110: base layer

120: adhesive layer

The present invention relates to a method of manufacturing a honeycomb ceramic filter having an enhanced bonding force by the addition of a base layer, and more particularly, to a method of manufacturing a porous ceramic filter by stacking, drying, plugging and sintering a plurality of ceramic segments, ("Bonding layer") is formed by applying and drying a surface material on the surface of the ceramic segment to form a layer ("base layer"), applying and drying the bonding material on the base layer, The base material is composed of a ceramic powder (a) having a larger particle diameter than that of the segment surface pores and a ceramic powder (b) having a particle diameter smaller than that of the segment surface pores.

Recently, there has been a serious environmental problem such as an abnormal weather phenomenon caused by air pollution, and there is a tendency to increase interest in diesel vehicles in which harmful gases such as carbon monoxide (CO) and hydrocarbon (HC) are less discharged than gasoline vehicles to be. However, the diesel vehicle has a problem in that a large amount of particulate matter such as nitrogen oxides (NOx) is discharged. Accordingly, researches on a diesel particulate filter (hereinafter referred to as DPF) for removing harmful gas and particulate matter discharged from a diesel engine of a diesel vehicle have been actively conducted.

The DPF collects carbon monoxide, hydrocarbons, particulate matter, and the like in the emission gas of light oil vehicle, injects light oil or the like at a predetermined interval, and uses the exhaust heat generated during operation of the vehicle, And the filter is regenerated by oxidation of the collected material with harmless carbon dioxide, water or the like by the reaction.

A honeycomb ceramic filter made of a honeycomb structure is mainly used for such a smoke filtering apparatus.

FIG. 1 is a schematic perspective view of a segment 10 for a general honeycomb ceramic filter, and FIG. 2 is a schematic view of a filtering process of the honeycomb ceramic filter of FIG.

1 and 2, a ceramic segment 10 is generally in the form of a hexagonal column with a square cross section and has a plurality of cells 12, 13 communicating with each other at its two end faces 20, Like structure in which the barrier ribs 11 cross each other so that the barrier ribs 11 may be formed. The cells 12 and 13 are plugged in an alternating arrangement manner to form a closed cell 12 sealed by a plug and an open cell 13 in which a plug is not formed, Or a checkerboard pattern.

In the ceramic segment 10 for a porous ceramic filter having such a structure, the particulate matter 40 of the exhaust gas flows into the open cell 13 opened in the front surface 20 of the porous ceramic filter 10, After passing through the partition 11, the rear face 30 is discharged to the opened open cell 13. At this time, the particulate matter of the exhaust gas is collected at the inner end 15a of the plug 15 located in the fine pores (not shown) formed in the partition 11 or the closed cell 12 at the rear side. That is, the particulate matter contained in the exhaust gas is filtered through the porous partition wall 11 while passing through the closed cell 12 in the rear face 30, while the particulate matter contained in the exhaust gas is opened in the front face 20 All.

When the particulate matter collected in such a manner is accumulated excessively in the porous ceramic filter, the pressure loss of the filter becomes large and the output of the engine is lowered. Therefore, the collected particulate matter is periodically discharged through an external ignition means such as an electric heater or a burner So that the porous ceramic filter is regenerated. Therefore, in general, the porous ceramic filter adopts the alternate regeneration method that is installed in the form of two / one set so that one side can be used when one side is being regenerated.

FIG. 3 schematically shows an enlarged view of a bonded portion of porous ceramic segments bonded by a conventional method.

Referring to Fig. 3, a honeycomb ceramic filter is generally manufactured by applying a lamination layer of a slurry type to a surface of a plurality of porous ceramic segments 60, 70, laminating, drying and sintering. In some cases, another bonding layer 51 serving as a buffer layer may be added between the bonding layer 52 and the surfaces of the ceramic segments 60 and 70. The ceramic segments thus bonded are prepared by cutting the outer shape of the ceramic segments in a predetermined shape in accordance with the structure of the smoke filtering apparatus to be mounted, applying the bonding layer 52 to the outer wall, and then drying and sintering the ceramic segments.

However, when applying the bonding layer 52 in the form of a slurry to the surface of the porous ceramic segments 60 and 70 having a very high porosity, the inorganic binder, the organic binder, etc., constituting the bonding layer 52, (55) and cracks were generated in the bonding agent . In addition, the inorganic sols that make a great contribution to the strength development of the bonding material move toward the segment, which may result in a decrease in the strength of the bonding layer.

These macropores 55 cause a localized high temperature in the regeneration process of the ceramic filter as described above, and the regeneration efficiency is lowered by non-uniformity of regeneration temperature, and cracks are generated by thermal stress. As a result, the bonding force between the segments is weakened, which causes a serious problem that the bonded segments are separated again in a subsequent chemical treatment such as a heat treatment process or a catalyst impregnation process.

In this connection, Japanese Patent Application Laid-Open No. 2000-285878 discloses a method using a silane coupling agent. However, when the silane coupling agent is used, the sol component is limited to silica, . Japanese Patent Application Laid-Open No. 1994-161938 discloses a method of using a polyvinyl alcohol (PVA) and a cellulose type hydrophilic organic polymer as an organic binder. However, even with the above-described technique, the movement of the sol component can not be sufficiently prevented, and the bonding strength of the segment is lowered as the content of the organic binder is increased.

Japanese Patent Application Laid-Open No. 1999-088391 discloses a technique for controlling the roughness of the surface of a segment. However, since the deviation of surface roughness of a segment produced in an actual extrusion process is large, And thus it is difficult to control the change of the porosity.

On the other hand, Japanese Patent Application Laid-Open No. 2004-322097 discloses a technique of applying a base layer having a viscosity different from that of the adhesive layer between the segment surface and the adhesive layer. That is, a base layer having a relatively low viscosity is applied to the surface of the segment to uniformly apply the adhesive layer, and then an adhesive layer having a high viscosity is added to prevent the adhesive layer from being uniformly applied to the segment surface, And the like. However, since the composition of the low-viscosity base layer and the high-viscosity adhesive layer as described above are not described, its precise mechanism of contribution contributing to the increase in the bonding strength can not be accurately known, but at least the low- Which may result in excessive inhalation on the surface.

As a result, although the above-described technology presents a new concept of addition of a base layer, it is thought that it does not fundamentally solve the problems of the prior art. Therefore, in the manufacturing process of the porous ceramic filter, The need for a technology that can be solved by a very high level.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art and the technical problems required from the past.

The inventors of the present application have conducted intensive research and various experiments to form a base layer of a ceramic segment, to form a bonding layer on the base layer, to bond the segments, and to bond the segments with a grain size The problem that the bonding components are excessively suctioned into the porous structure of the segment can be fundamentally solved when the ceramic powder (a) having the small particle diameter and the ceramic powder (b) having the particle diameter smaller than the segment surface pore are simultaneously included, The inventors have found that the adhesive strength is greatly improved, and the present invention has been accomplished.

Accordingly, the method for manufacturing a honeycomb ceramic filter according to the present invention is a method for manufacturing a porous ceramic filter by stacking, drying, plugging and sintering a plurality of ceramic segments, comprising the steps of applying a base material to the surface of a ceramic segment, (A " base layer ") is formed on the base layer, a bonding material is applied and dried on the base layer to form a layer (" bonding layer ") and then the segments are joined together. and a ceramic powder (b) having a particle diameter smaller than that of the segment surface pores at the same time.

As described above, since the base layer has a predetermined composition and particle size, it is possible to solve the problems caused by excessively sucking the bonding components contained in the bonding layer into the porous structure of the segment, and the base layer also includes an adhesive component As a result, it is possible to provide a very good bonding force between the bonded segments.

Here, the ceramic powder (a) having a particle diameter larger than that of the segment surface pores does not necessarily mean only a ceramic powder having a particle diameter larger than that of the segment surface, but is generally the same as or larger than the pores of the segment surface Is used as a concept including a ceramic powder having a particle diameter.

The thickness of the base layer and the bonding layer can be appropriately adjusted within a range that exhibits the effects as described above. In one preferred example, the thickness of the base layer is 0.3 to 0.8 mm, the thickness of the bonding layer Can be formed to be 1 to 3 mm, respectively.

When the thickness of the base layer is too thin, it does not serve as a base layer for substantially preventing the suction of the resin. When the thickness of the bonding layer is too thin, it is difficult to expect a desired bonding force. On the contrary, since the base layer and the bonding layer do not collect dust and function as a catalyst carrier, when the thicknesses of the base layer and the bonding layer are too thick, the specific surface area per unit volume of the honeycomb ceramic filter is reduced, The performance is deteriorated.

In order to exert such an adhesive force, the ceramic powder of a predetermined amount of the bonding material needs to be sucked into the porous structure of the ceramic segment. As a result, If the size of the ceramic powder of the bonding material is too large, it is not sucked into the porous structure of the ceramic segment, which is not preferable. Therefore, it is preferable that the ceramic powder of the bonding material is mainly composed of powder (b ') having a small particle diameter. Even when the powder is composed of the powder (b ') having a small particle size, excessive suction phenomenon is prevented by the base layer, so that it is not a big problem.

In one preferred example, the backing may have a composition consisting of ceramic powders (a, b), ceramic fibers, inorganic sol, organic binder and water.

That is, the base layer simultaneously contains a ceramic powder (a) having a particle diameter larger than that of the segment surface pores and a ceramic powder (b) having a particle diameter smaller than that of the segment surface pores. Wherein the ceramic powder (a) has a larger particle diameter than the surface pores of the segment, and forms a predetermined gap between the ceramic powders (a) while blocking the pores of the segment surface. The ceramic powder (b) By appropriately filling the voids formed between the powders (a), it is possible to prevent the bonding material components from excessively moving to the segment surface.

The interaction of these ceramic powders (a) and ceramic powders (b) thus prevents the components of the bonding material from being excessively sucked to the porous structure of the segment surface and, on the one hand, It can be suitably sucked into the porous structure of the segment surface. In addition, the components contained in the base material can exert their own adhesive force and exert excellent adhesive force together with the adhesive material which is a component of the adhesive layer.

The ceramic powders (a) and (b) are not particularly limited as long as they can withstand a sintering process or a regeneration process at a high temperature, and examples thereof include silicon nitride (Si ₃ N ₄ ), alumina, stainless steel powder, Silicon (SiC), or the like may be used, but the present invention is not limited thereto.

The organic binder is a material which provides a bonding force of the layer constituents at room temperature and includes, for example, polyvinylidene fluoride, polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropylcellulose, Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butadiene rubber, fluorine rubber, various copolymers, high molecular weight polyolefins such as polyolefin, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, Vinyl alcohol, but it is not limited to these.

The inorganic components such as the inorganic sol and the ceramic fiber are materials that provide a bonding force between the layer constituents after the sintering process of the honeycomb filter. The inorganic sol may be a colloidal material such as silica sol, alumina sol, The ceramic fiber may be, for example, silica, mullite, alumina, silica-alumina, or the like, but is not limited thereto.

When the amount of the ceramic powder (a) is too large, the amount of the ceramic powder (a) is required to fill the porous structure of the segment surface and to form a predetermined gap. A considerable amount of bonding material components can be sucked by the pores formed between the powders (a), whereas when the amount of the ceramic powder (a) is too small, the pores of the segment surface are hardly obstructed, It can not serve as a base layer to prevent

Also, when the amount of the ceramic powder (b) is too large or too small, it is difficult to obtain an effect of inducing suction of an appropriate amount of the bonding material component into the pores in the segment while preventing the bonding material component from being excessively sucked into the pores in the segment .

Therefore, it is preferable that the ceramic powder (a) is contained in an amount of 1 to 30% by weight and the ceramic powder (b) is contained in an amount of 15 to 60% by weight based on the total weight of the base material.

Since the ceramic filter manufactured by bonding a plurality of ceramic segments undergoes a sintering process or a regeneration process at a high temperature, the underlying layer and the bonding layer must also be able to withstand high temperatures. Therefore, it is preferable that the ceramic powder is a silicon carbide (SiC) powder excellent in heat resistance and hardly deformed even at a high temperature, and the particle diameter of the ceramic powder (a) is equal to or larger than the particle diameter of the pores formed in the porous structure of the surface of the ceramic segment And may be, for example, one or a mixture of two or more particles having a particle diameter of 20 mu m or more.

The particle diameter of the ceramic powder (b) is smoothly moved through the void generated by the ceramic powder (a) within a range smaller than the particle diameter of the ceramic powder (a) and sucked into the porous structure of the segment surface For example, one or a mixture of two or more particles having a particle diameter of less than 15 mu m.

In one preferred embodiment, the ceramic powder (a) is a SiC powder having a particle diameter of 25 to 35 탆, the ceramic powder (b) is a powder of SiC having a particle diameter of 0.5 to 1.2 탆 and a particle diameter of 7 to 8 탆 Gt; SiC < / RTI >

As the material of the bonding layer, the bonding material serves to substantially exert the bonding force between the segments, and known bonding layer constituent components can be used. In one preferred example, the bonding material may comprise ceramic powder (b '), ceramic fiber, inorganic sol, organic binder and water.

That is, the ceramic fiber, the inorganic sol, the organic binder, and the water may be included for the reasons described above in connection with the components of the base material, and ceramic powder added to prevent excessive suction of the bonding material among components included in the base material a) is not included here.

If the amount of the ceramic powder (b ') is too large, the other components contained in the bonding material may be relatively reduced and the bonding strength and fluidity may be weakened. On the other hand, when the amount is too small, The powder (b ') is preferably contained in an amount of 30 to 60% by weight, based on the total weight of the bonding material.

In one preferred embodiment, the ceramic powder (b ') is one or a mixture of two or more particles having a particle size of less than 15 μm, and in a specific example, a SiC powder having a particle diameter of 0.5 to 1.2 μm and a particle diameter of 7 to 8 μm Gt; SiC < / RTI > That is, by having a particle diameter smaller than the pores of the segment, it passes through between the ceramic powder (a) having a large particle size included in the base layer and sucked properly to the pores formed on the segment surface, so that the adhesive force can be exerted.

In one preferred example, the bonding material may further include ceramic hollow spheres and / or clay in the range of 10 wt% or less based on the total weight.

Since the ceramic hollow spheres and / or the clay are excellent in the holding power and the holding power of the bonding material components, are stable at high temperature and high pressure, have a low specific gravity and have appropriate strength, And it is easy to handle since it is not easily broken when forming a bonding material paste.

The ceramic hollow spheres may include, for example, silica, alumina, mullite, fly ash, and the like, but are not limited thereto.

If the amount of the ceramic hollow spheres and / or clay is excessively large, the amount of the bonding components in the bonding layer is relatively reduced, and the number of the hollow spheres increases, so that the bonding strength may be weak. On the other hand, It is difficult to expect. Therefore, the ceramic hollow spheres and / or the clay are preferably added in an amount of 10 wt% or less based on the total weight of the bonding material.

The ceramic hollow spheres may preferably have a plurality of mullite whiskers having a hollow structure having an outer diameter of 20 to 100 탆. Here, the "whisker" means a needle-like single crystal having a very high tensile strength. Generally, whiskers have a diameter ranging from submicron to tens of microns and an aspect ratio (length / diameter ratio) of 10 or more. The smaller the whisker diameter is, the higher the tensile strength becomes, and the theoretical strength becomes closer.

Therefore, the mullite whisker has a very high strength and can withstand a high temperature thermal cycle such as a regeneration process when used as a porous filter, so that the bonding layer can be given a predetermined strength. Furthermore, since the hollow spheres formed of mullite whiskers act as a bonding material after maintaining the hollow structure to a considerable temperature, a more uniform and stable bonding layer can be formed.

The base layer and the bonding layer are preferably formed by applying a base material or a bonding material and then heating and drying at 80 to 150 ° C. That is, the base material is coated on the ceramic segments, heated to 80 to 150 ° C., dried, and then the bonding material is applied. After heating to 80 to 150 ° C. and drying, the base layer and the bonding layer are formed on the ceramic segments.

The method of applying the base material or the bonding material is not particularly limited and may be performed using a known coating method. For example, the base material or the bonding material can be uniformly coated using a rubber roll and a rubber blower.

In a specific example, a base material is coated on the ceramic segments, dried at 100 ° C for 15 minutes, applied to a dried segment, bonded and dried again at 100 ° C to form a base layer and a bonding layer .

The present invention also provides a honeycomb ceramic filter manufactured by the above method.

That is, the honeycomb ceramic filter can be manufactured by cutting the silicon carbide sintered body, which has undergone the curing process by sintering after sequentially laminating the ceramic layers on which the base layer and the bonding layer are formed, into a predetermined outer shape. The shape of the ceramic segments may vary and, in one preferred embodiment, the ceramic segments may have a rectangular parallelepiped structure in cross section. Further, the number of the ceramic segments bonded to each other is appropriately determined in accordance with a desired standard of the honeycomb ceramic filter on which the catalyst component is carried.

The structure and manufacturing method of the honeycomb ceramic filter are well known, and a detailed description thereof will be omitted herein.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited by the scope of the present invention.

FIGS. 4A, 4B, 4C, 4D and 4E schematically illustrate the manufacturing process of the porous ceramic filter according to one embodiment of the present invention as a series of process drawings.

Referring to these drawings, a porous ceramic filter according to the present invention comprises the steps of: (4a) producing a ceramic segment (100), (4b) forming a ground layer (110) on a ceramic segment (100) A step 4c of forming an adhesive layer 120 on the base layer 110 and a step of sequentially laminating the ceramic segments 101, 102, 103, 104, 105, and 106 on which the base layer 110 and the adhesive layer 120 are formed (4d), and after drying the stacked segments, cutting out the outer shape in a predetermined shape, forming a base layer (110) and an adhesive layer (120) on the cut outer surface, drying and curing May be prepared in step (4e). The shape of the cut may vary according to the required shape and may be, for example, a cylindrical shape of an elliptical cross section as shown by the dotted line in FIG. 4D.

Fig. 5 schematically shows a cross-sectional enlarged view of a bonded portion before sintering in the porous ceramic filter according to the present invention.

5, the base layer 110 is coated on the surfaces of the ceramic segments 200 and 210, and the bonding layer 120 is coated on the base layer 110. The base layer 110, the bonding layer 120, and the base layer 110 are stacked in this order between the ceramic layers (i.e., the ceramic segments 200 and 210).

The base layer 110 serves as a kind of buffer for preventing the bonding component of the bonding layer from being excessively sucked to the surface of the ceramic segments 200 and 210. The base layer The ceramic powder having a particle diameter larger than that of the segment surface pores and the ceramic powder having a particle diameter smaller than that of the segment surface pores are contained at the same time, thereby performing the buffering function and improving the bonding strength between the segments.

The bonding layer 120 is formed by applying an adhesive on the base layer 110 and is a layer that substantially functions as a bonding function of the ceramic segments 200 and 210. Therefore, the bonding layer 120 includes bonding components. As the main component, for example, a silicon carbide powder excellent in heat resistance and not deformed at high temperature can be used.

Hereinafter, the present invention will be described in further detail with reference to the following examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[Example 1]

The surface of the sintered segment was coated with a base material, dried at 100 DEG C for 15 minutes, applied to the dried segment, bonded and dried again at 100 DEG C to bond the segments. In this case, the compositions of the base material and the bonding material are shown in Tables 1 and 2, respectively.

<Table 1> Composition of the base material (A)

<Table 2> Composition of the bonding material (B)

[Example 2]

The segments were bonded in the same manner as in Example 1, except that the composition of the bonding material was changed as shown in Table 3 below.

<Table 3> Composition of the bonding material (C)

[Example 3]

The segments were bonded in the same manner as in Example 1, except that the composition of the bonding material was changed as shown in Table 4 below.

<Table 4> Composition of the bonding material (D)

[Comparative Example 1]

The segments were bonded in the same manner as in Example 1 except that the composition of the base material was changed as shown in Table 5 below.

<Table 5> Restructuring (E)

[Comparative Example 2]

The segments were bonded in the same manner as in Comparative Example 1, except that the composition of the bonding material was changed as shown in Table 6 below.

<Table 6> Composition of the bonding material (C)

[Comparative Example 3]

The segments were bonded in the same manner as in Comparative Example 1, except that the composition of the bonding material was changed as shown in Table 7 below.

<Table 7> Composition of the bonding material (D)

[Experimental Example]

As a result of the bonding strength test (3 point bending strength) of the bonded segments in the above example and comparative example, the results of Table 8 were obtained.

<Table 8>

As shown in Table 8, the bonding strengths of Examples 1 to 3 were significantly higher than those of Comparative Examples 1 to 3, and in particular, the bonding strengths of Example 3 and Comparative Example 3 were compared, It can be confirmed that the strength is more than twice. Here, it was confirmed that there was no significant difference in the viscosities of the ground remanufacturing A of the above example and the comparative example. In other words, the biggest difference between the ground reclamation A and E is the difference in particle size distribution of SiC used. Therefore, it shows that the solids migration is prevented by the particle size of the used particles even if the viscosity of the base material is similar.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. will be.

As described above, the method of manufacturing a porous ceramic filter according to the present invention comprises the steps of forming a layer ("base layer") by applying and drying a base material on the surface of a ceramic segment, (A) and a ceramic powder (b) having a particle diameter smaller than that of the segment surface pores at the same time as the segment surface pores The problem that the bonding components are excessively suctioned into the porous structure of the segment can be fundamentally solved, and a porous ceramic filter having an excellent bonding strength can be obtained.

Claims (16)

A method of producing a porous ceramic filter by laminating, drying, plugging and sintering a plurality of ceramic segments, the method comprising: applying a base material to the surface of the ceramic segment and drying to form a layer ("base layer"), (A) and a ceramic powder (a) having a particle diameter smaller than that of the segment surface pores, wherein the ceramic powder (a) has a particle diameter larger than that of the segment surface pores, and the ceramic powder (b) simultaneously, The base material is formed to have a composition composed of ceramic powders (a, b), ceramic fibers, inorganic sol, organic binder and water, Wherein the bonding material is made of a ceramic powder (b ') having a particle diameter of less than 15 mu m. The method according to claim 1, wherein the thickness of the base layer is 0.3 to 0.8 mm, and the thickness of the bonding layer is 1 to 3 mm. delete delete The ceramic powder according to claim 1, wherein the ceramic powder (a) is contained in an amount of 1 to 30% by weight based on the total weight of the base material, and the ceramic powder (b) is contained in an amount of 15 to 60% . 6. The method according to claim 5, wherein the ceramic powder (a) is one or a mixture of two or more particles having a particle diameter of 20 占 퐉 or more in a range of the same or larger than the particle diameter of the pores formed in the porous structure of the surface of the ceramic segment. 6. The method according to claim 5, wherein the ceramic powder (b) is one or a mixture of two or more particles having a particle diameter of less than 15 mu m. The ceramic powder according to claim 5, wherein the ceramic powder (a) is a SiC powder having a particle diameter of 25 to 35 탆, the ceramic powder (b) is a powder of SiC having a particle diameter of 0.5 to 1.2 탆, Lt; RTI ID = 0.0 &gt; SiC &lt; / RTI &gt; The method according to claim 1, wherein the bonding material has a composition comprising ceramic powder (b '), ceramic fiber, inorganic sol, organic binder and water. The production method according to claim 9, wherein the ceramic powder (b ') is contained in an amount of 30 to 60% by weight based on the total weight of the bonding material. 11. The method according to claim 10, wherein the ceramic powder (b ') is one or a mixture of two or more. 12. The method according to claim 11, wherein the ceramic powder (b ') is a mixture of SiC powder having a particle diameter of 0.5 to 1.2 mu m and SiC powder having a particle diameter of 7 to 8 mu m. The manufacturing method according to claim 9, wherein the bonding material further comprises ceramic hollow spheres in a range of 10 wt% or less based on the total weight. 14. The method of claim 13, wherein the ceramic hollow spheres comprise a plurality of mullite whiskers having a hollow structure having an outer diameter of 20 to 100 mu m. The method according to claim 1, wherein the base layer and the bonding layer are formed by applying a base material or a bonding material, followed by heating and drying at 80 to 150 캜. A honeycomb ceramic filter produced by the method according to any one of claims 1, 2 and 5 to 15.

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