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Large-scale honeycomb ceramic assembly and preparation method thereof

A honeycomb ceramic body and technology of honeycomb ceramics, applied in ceramic products, other household appliances, applications, etc., can solve the problems of mold hole wall deformation, incomplete molding, and honeycomb hole blockage, so as to achieve low equipment requirements and improve assembly efficiency , high-strength effect

Inactive Publication Date: 2018-12-07
JIANGXI BOCENT TEC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the overall extrusion molding of some large-scale (outer dimensions greater than 300 mm) honeycomb ceramic bodies, the requirements for forming molds are also higher. The overall manufacturing of large honeycomb ceramic bodies using extrusion technology has problems such as incomplete molding, deformation or breakage of the die hole wall, and blockage of honeycomb holes. , Collision, resulting in side edge defects, or even overall fragmentation

Method used

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  • Large-scale honeycomb ceramic assembly and preparation method thereof
  • Large-scale honeycomb ceramic assembly and preparation method thereof
  • Large-scale honeycomb ceramic assembly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 and figure 2 As shown, according to the following method steps, the traditional small honeycomb ceramic bodies 1 with different heights and the same shape are superimposed and combined into a regular large honeycomb ceramic body with a pressure-reducing channel: the traditional small honeycomb ceramic body has a boss 3, and the traditional small honeycomb ceramic body The honeycomb ceramic bodies 1 are superimposed on each other to form a pressure-reducing channel A2

[0024] a. Prepare the traditional small honeycomb ceramic body 1 with different heights and the same shape by integral extrusion molding;

[0025] b. Preparation of adhesive: Prepare adhesive A according to the ratio of silica sol: alumina powder = 1:5, which is used for combination bonding of small honeycomb ceramic body 1; according to the ratio of silica sol: alumina powder = 5:1 Prepare binder B for bonding between the combined honeycomb body and inorganic fiber cotton (gl...

Embodiment 2

[0027] Embodiment 2: according to the following method steps, as image 3 As shown, the regular small honeycomb ceramic body 4 and the special-shaped small honeycomb ceramic body 5 with different heights and the same shape are combined into a regular large honeycomb ceramic body with a pressure-reducing channel:

[0028] a. Prepare the small honeycomb ceramic body 4 and the special-shaped small honeycomb ceramic body 5 made by integral extrusion molding;

[0029] b. Preparation of adhesive: prepare adhesive A according to the ratio of alumina sol: alumina powder = 1:3, which is used for combined bonding of small honeycomb ceramic bodies; prepare according to the ratio of silica sol: alumina powder = 3:1 Adhesive B, used for bonding between the combined honeycomb body and glass fiber wool;

[0030] c. Apply adhesive A evenly and evenly on the outer wall surface of the traditional small honeycomb ceramics that needs to be bonded. The coating amount of adhesive A per square mete...

Embodiment 3

[0031] Embodiment 3: according to the following method steps, as Figure 4 As shown, the small honeycomb ceramic body I7 for combination and the small honeycomb ceramic body II8 for combination with different heights and shapes are combined into a special-shaped large honeycomb ceramic body with a pressure-reducing channel B6:

[0032] a. Prepare small honeycomb ceramic bodies Ⅰ7 and Ⅱ8 for assembly with different heights and shapes made by integral extrusion;

[0033] b. Preparation of adhesive: Prepare adhesive A according to the ratio of aluminum phosphate glue: ceramic blank tire powder = 1:3, which is used for combined bonding of small honeycomb ceramic bodies; according to aluminum phosphate glue: ceramic blank tire powder = 3: The ratio of 1 is used to prepare binder B, which is used for bonding between the combined honeycomb body and inorganic fiber cotton 10 (ceramic);

[0034] c. Apply adhesive A evenly and evenly on the outer wall surface of the small honeycomb cer...

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Abstract

The invention discloses a preparation method for a large-scale honeycomb ceramic. The preparation method comprises the following steps: preparing small-scale honeycomb ceramics which are integrally extruded and molded; preparing an adhesive; uniformly and flatly coating the outer wall surfaces of to-be-bonded small-scale honeycomb ceramics with the adhesive, wherein the coating dosage of the adhesive is 1-10kg per square meter of contact area; uniformly and flatly coating an inorganic fiber cotton surface with the adhesive, wherein the coating dosage of the adhesive is 0.1-1kg per square meterof contact area; assembling different small-scale honeycomb ceramics, thereby forming the large-scale honeycomb ceramic with a pressure-reducing channel. The preparation method disclosed by the invention is simple in process; the demand on equipment is low; the raw materials are easily acquired; the prepared honeycomb ceramic assembly is high in strength, is not easily damaged during transportation and assembling processes and has a flexible honeycomb ceramic; the assembling efficiency is obviously increased, especially for large-size honeycombs which are difficult to shape according to an ordinary molding process; the preparation method can be adopted for acquiring large-scale honeycomb ceramics in various sizes and different shapes.

Description

technical field [0001] The invention relates to a method for preparing a large-scale honeycomb ceramic assembly, which belongs to the technical field of porous ceramic processing and molding. Background technique [0002] Honeycomb ceramics, as a functional porous material, began trial production as early as the 1970s. Honeycomb ceramics have high specific surface area and good physical and chemical stability, in addition to low density, high permeability, good energy absorption performance, high temperature resistance, corrosion resistance, high chemical stability and dimensional stability, easy to Regeneration and many other features. In recent years, with the development of preparation technology, its application range has been continuously expanded, and its application level has been continuously improved. [0003] The molding process of honeycomb ceramics can be roughly divided into the following types: extrusion, hot die casting, grouting and coagulation molding. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/185C04B35/18C04B35/10C04B28/00C04B28/34
CPCC04B28/005C04B28/344C04B35/10C04B35/18C04B35/185C04B38/0019C04B14/42C04B14/303C04B18/165C04B14/46
Inventor 吴汉阳徐鹏
Owner JIANGXI BOCENT TEC CO LTD
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