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Sealing material for honeycomb structured body, honeycomb structured body and method for manufacturing honeycomb structured body

A honeycomb structure and sealing material technology, which is applied in the field of sealing materials for honeycomb structures, can solve problems such as adverse effects on the human body, achieve good coating properties, prevent gelation, and improve strength

Active Publication Date: 2010-10-06
IBIDEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If such inorganic fibers invade the body, especially the lungs, etc., and remain in their original state for a long time, they may have adverse effects on the human body.

Method used

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  • Sealing material for honeycomb structured body, honeycomb structured body and method for manufacturing honeycomb structured body
  • Sealing material for honeycomb structured body, honeycomb structured body and method for manufacturing honeycomb structured body
  • Sealing material for honeycomb structured body, honeycomb structured body and method for manufacturing honeycomb structured body

Examples

Experimental program
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Effect test

no. 1 approach

[0088] Hereinafter, a first embodiment of the sealing material for a honeycomb structure, the honeycomb structure, and the manufacturing method of the honeycomb structure of the present invention will be described with reference to the drawings.

[0089] First, the sealing material for a honeycomb structure according to the first embodiment will be described.

[0090] The sealing material for a honeycomb structure according to the present embodiment contains inorganic fibers containing a biosoluble inorganic compound, inorganic particles, and an ion adsorbent.

[0091] (inorganic fibers containing biosoluble inorganic compounds)

[0092] The inorganic compound in the inorganic fibers contained in the sealing material for a honeycomb structure is at least one selected from the group consisting of alkali metal compounds and alkaline earth metal compounds.

[0093] Examples of the alkali metal compound include oxides of Na and K, and examples of the alkaline earth metal compound...

Embodiment 1

[0200] (Preparation of sealing material for honeycomb structure)

[0201] Add 438.9 parts by weight of the above-mentioned biosoluble fibers using inorganic fibers A as inorganic fibers, 367.5 parts by weight of SiC powder with an average particle diameter of 0.5 μm as inorganic particles, and carboxymethylcellulose (CMC) as an organic binder. 4.6 parts by weight, 283.6 parts by weight of bentonite dispersion (W-200U manufactured by TOPY INDUSTRIES LTD.) containing 2% by weight of bentonite as an ion adsorbent, 22.7 parts by weight of polyvinyl alcohol (PVA) as a water-retaining agent, and 50.0 parts by weight of water parts, mixed and kneaded to prepare a sealing material for a honeycomb structure with a pH of 6.3. In addition, the concentration of bentonite in the above-mentioned sealing material for a honeycomb structure was 0.5% by weight.

Embodiment 2～5

[0203] A sealing material for a honeycomb structure was prepared in the same manner as in Example 1, except that the amount of the bentonite dispersion was changed so that the content of bentonite in the sealing material for a honeycomb structure was the mixing amount shown in Table 2 below. Table 2 shows pH values ​​of the obtained sealing materials for honeycomb structures in Examples 2 to 5.

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Abstract

An object of the present invention is to provide a sealing material for a honeycomb structured body, which can secure safety for human body of the sealing material for a honeycomb structured body containing inorganic fibers, does not form a gel and has good applicability to ceramic blocks and the like even long after preparation of the sealing material for a honeycomb structured body. The sealingmaterial for a honeycomb structured body according to the present invention contains inorganic fibers including a biosoluble inorganic compound; inorganic particles; and an ion adsorbent in an amountof 0.1% by weight or more.

Description

technical field [0001] The present invention relates to a sealing material for a honeycomb structure, a honeycomb structure, and a method for manufacturing the honeycomb structure. Background technique [0002] The honeycomb structure is used as a filter for removing particulates and the like in exhaust gas discharged from internal combustion engines such as diesel engines, or as a catalyst carrier for removing harmful components such as HC (hydrocarbons) and CO (carbon monoxide) in exhaust gas. Inorganic fibers are used as materials for various components constituting the honeycomb structure. Specifically, for example, as a sealing material (adhesive material) when two or more honeycomb fired bodies are combined to form a ceramic block, or as a sealing material applied to the outer periphery of a ceramic block (peripheral sealing material, hereinafter also referred to as is the outer peripheral coating material), a sealing material containing inorganic fibers is used. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B01D46/24B01J35/04C04B38/00F01N3/022F01N3/28
CPCC04B2237/083C04B2237/38C04B41/5024F01N2330/48C04B41/009C04B37/006C04B2111/0081Y02T10/20C04B2237/368B01J35/04C04B2237/708C04B2237/365F01N2370/24C04B2237/62C04B41/85F01N3/2828C04B2237/366C04B2237/361C04B28/001C04B28/24C04B37/005C04B2111/00793F01N3/0222F01N2450/28C04B41/5089C04B2237/36C04B38/0019F01N2370/04Y10T428/24149Y02T10/12C04B35/565C04B38/0012C04B38/0051C04B38/0074C04B14/106C04B14/20C04B14/324C04B14/327C04B14/328C04B14/383C04B14/42C04B24/383C04B2103/46C04B38/04C04B22/16C04B14/366C04B14/022C04B14/047C04B14/062C04B14/064C04B14/24C04B14/303C04B14/465C04B41/5037C04B41/5059C04B41/5048C04B35/00C04B38/0006F01N3/022B01J35/56B01D39/06
Inventor 宫田明和金井胜纪
Owner IBIDEN CO LTD
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