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Method of manufacturing honeycomb structural body

A technology of a honeycomb interlayer and a manufacturing method, which is applied in the field of manufacturing of a honeycomb interlayer structure, can solve the problems of loss of filter, reduced reliability of unit sealing part 22, defect of pores and the like

Inactive Publication Date: 2007-03-28
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Fig. 3 is a schematic enlarged cross-sectional view near the entrance side end face B of the honeycomb sandwich structure 21, the following problem arises: on the cell sealing portion 22 that should be formed as shown in Fig. The air hole defect 26 shown in 3(ii) is severe, and even a hole 27 penetrating the unit sealing part 22 is opened as shown in FIG. 3(iii)
[0006] When the pore defect 26 occurs, there is a problem that the reliability of the unit sealing portion 22 is reduced. In addition, when the hole 27 penetrating the unit sealing portion 22 is opened, when it is used as a filter for dust collection, dust or particles are removed from the air. The hole 27 leaks, thereby losing its function as a filter

Method used

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  • Method of manufacturing honeycomb structural body
  • Method of manufacturing honeycomb structural body
  • Method of manufacturing honeycomb structural body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] As a method of masking, a method using an adhesive film is employed. The thickness of the adhesive film and the slurry used for cell sealing are the same as in Comparative Example 1. As shown in Figure 1 (b), the heat conduction mechanism 12 (electric heating plate) is used as the drying mechanism, and the cells of the honeycomb sandwich structure 1 are The sealing part 2 was directly in contact with the heat conduction mechanism 12 (electric heating plate) with a set temperature of 250° C., and dried for 5 minutes.

Embodiment 2、3

[0046] As a method of masking, a method using an adhesive film is employed. A film with a thickness of 0.5 mm was used as the adhesive film, and one sheet of the adhesive film (thickness 0.5 mm) was attached in Example 2, and two sheets (thickness 1 mm) were laminated and attached in Example 3. . The slurry, drying mechanism, and drying method used for unit sealing are the same as in Example 1.

Embodiment 4～8

[0048] As a method of masking, a method using an adhesive film is employed. The thickness, drying mechanism, and drying method of the adhesive film are the same as in Example 1. As the slurry for cell sealing, the following slurry was used: cordierite powder as a ceramic powder, methylcellulose as a thermally gel-hardening binder as a binder, and deflocculation A special carboxylic acid-type polymer surfactant (trade name: Poise 530, manufactured by Kao Corporation) was prepared by adding water as a dispersion medium, adjusting the viscosity appropriately using the amount of water, and mixing for 30 minutes. Its slurry viscosity is 20dPa·s (embodiment 4), 50dPa·s (embodiment 5), 200dPa·s (embodiment 6), 500dPa·s (embodiment 7), 2000dPa·s (embodiment 8).

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Abstract

The present invention lies in a process for producing a honeycomb structure having a plurality of cells each functioning as a passage of fluid, the process comprising: applying mask 11 to some of the cells, at an end face of ceramic honeycomb structure; dipping the end face having mask 11 in slurry 10 containing at least a ceramic powder, to force the slurry into cells without mask, to form plugged portions 2 therein; and drying the plugged portions 2 to obtain a honeycomb structure 1 wherein cells without mask are plugged, characterized in that the drying of the plugged portions 2 is conducted by a thermal conduction device 12.

Description

technical field [0001] The present invention relates to a method of manufacturing a honeycomb sandwich structure suitable for use as, for example, a filter for dust collection, in which a part of a plurality of cells is sealed by the cells. Background technique [0002] In recent years, in various fields including chemical, electric power, iron and steel, and industrial waste treatment, resistant Ceramic honeycomb sandwich structure with excellent heat resistance and corrosion resistance. For example, a ceramic honeycomb sandwich structure (hereinafter, sometimes referred to as Referred to as 'honeycomb sandwich structure'). [0003] The honeycomb sandwich structure used as the above-mentioned filter for dust collection is required to have a structure with low pressure loss and high collection efficiency. Then, a honeycomb sandwich structure in which some of the cells are sealed by the cells is used. For example, as shown in FIG. 2 , in a honeycomb sandwich structure 21 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B11/02C04B33/30B01D39/20F01N3/02B01D41/02B01D46/00B28B11/00B28B11/24C04B35/636
CPCC04B2235/3206C04B35/62625C04B35/62655B28B11/006B28B11/243C04B35/6365C04B2235/3481B01D41/02B28B11/007
Inventor 加藤茂树宫本满
Owner NGK INSULATORS LTD