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Circumference coating material, bonding material, honeycomb structure, and method of producing honeycomb structure

一种蜂窝结构体、涂层材料的技术，应用在涂层、化学仪器和方法、层压等方向，能够解决隔壁剥离等问题，达到降低腐蚀的可能性、减少氯浓度的效果

Active Publication Date: 2016-10-12
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Incomplete partitions are easy to peel off due to external force

Method used

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  • Circumference coating material, bonding material, honeycomb structure, and method of producing honeycomb structure
  • Circumference coating material, bonding material, honeycomb structure, and method of producing honeycomb structure
  • Circumference coating material, bonding material, honeycomb structure, and method of producing honeycomb structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0058] (1) Silica gel, chlorine concentration of outer peripheral coating material before and after drying, and influence of heat treatment The outer peripheral coating material was prepared using silica gels (Examples 1 to 7, Comparative Example 1) with different chlorine concentrations. The measurement results of the chlorine concentration of the silica gel used, the chlorine concentration of the outer peripheral coating material before drying, and the chlorine concentration of the outer peripheral coating material after drying are shown in Table 1 below. In addition, with regard to Examples 6 and 7, the chlorine concentration of the outer peripheral coating material at each heating temperature after the above-mentioned heating process is also shown.

[0059] The measurement of the chlorine concentration was carried out using a thermal hydrolysis-ion chromatography analysis method. Specifically, a sample to be measured under an inert atmosphere is thermally decomposed (therm...

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Abstract

The invention provides a circumference coating material, a bonding material, a honeycomb structure, and a method of producing the honeycomb structure. Provided is a circumference coating material that suppress a chlorine concentration and suppress an occurrence possibility of corrosion in exhaust system pipes or the like. The circumference coating material fills a recessed groove (10) that is formed on a circumferential surface (7) of a honeycomb fired body (6) and extends an axial direction at which a part of cells (3a) are opened to the outside and to cover the circumferential surface, thereby forming a circumferential wall on the circumferential surface of a honeycomb structure, and the circumference coating material includes colloidal silica in a part of raw materials to be used and has a chlorine concentration of 150 ppm or less. In addition, the colloidal silica to be used has a chlorine concentration of 500 ppm or less, and the colloidal silica is produced using at least any one acid of sulfuric acid, phosphoric acid, and organic acid.

Description

technical field [0001] The present invention relates to a peripheral coating material, a bonding material, a honeycomb structure, and a method for manufacturing the honeycomb structure. More specifically, it relates to an outer peripheral coating material, a bonding material, a honeycomb structure, and a method for producing a honeycomb structure that do not corrode metal products or metal parts such as exhaust system piping. Background technique [0002] Conventionally, honeycomb structures made of ceramics have been used in a wide range of applications such as catalyst carriers for automobile exhaust gas purification, diesel particulate filters, and heat storage bodies for combustion devices. A ceramic honeycomb structure (hereinafter referred to simply as a "honeycomb structure") is produced by preparing a molding material (clay), extruding it into a desired honeycomb shape using an extrusion molding machine, cutting the green body, The formed honeycomb body is dried and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28F01N3/22C09D7/61
CPCF01N3/022F01N3/2828F01N2330/30F01N2510/08C04B41/85C04B38/0019C04B41/009C04B41/5089C04B2111/1062F01N2330/06C04B28/24C04B38/0016C04B2111/00793C09D7/61C04B35/00C04B38/0006C04B35/195C04B35/478C04B35/565C04B41/0072B32B3/12B32B37/146B32B2255/20B32B2305/024
Inventor 大野阳平内田靖司
Owner NGK INSULATORS LTD
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