A kind of preparation method of honeycomb ceramic

A honeycomb ceramic, particle size technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of large temperature difference between the inside and outside of the green body, large diesel engine volume, and reduced survival rate, etc. The effect of easy and reduced molding difficulty

Inactive Publication Date: 2011-12-14
YIXING PRINCE CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the diesel engine has a large volume, and it is difficult to manufacture a large-scale carrier with a volume greater than 10 liters. During the drying and firing process, the green body is prone to internal and external cracks, which reduces the survival rate.
Although the working strength of the diesel engine is low during use, due to its large volume, the temperature difference between the inside and outside of the green body is large during the cold and heat changes, and it is easy to crack during use.

Method used

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  • A kind of preparation method of honeycomb ceramic

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preparation example Construction

[0012] The invention discloses a preparation method of honeycomb ceramics, which comprises the following steps:

[0013] (1) Prepare talcum powder of 35-45 parts by weight, alumina of 20-25 parts by weight, clay of 25-30 parts by weight, quartz powder of 5-10 parts by weight, hydroxypropyl methyl of 5-10 parts by weight Cellulose, 2-3 parts by weight of stearic acid and 20-30 parts by weight of deionized water.

[0014] (2) Mix the above materials first.

[0015] (3) The above-mentioned mixed material is formed into a green body by extrusion, and the green body is dried.

[0016] (4) The above-mentioned green body is fired at 1400°C-1430°C and kept for 10 hours to obtain the finished product. Wherein, during firing, the temperature rises by 50°C per hour until 1400°C-1430°C.

[0017] In this method:

[0018] The particle size characteristics of the talcum powder are D10: 1um-2um, D50: 9um-11um, D90: 18um-20um;

[0019] The particle size characteristics of alumina are D10:...

Embodiment 1

[0023] Provide the talcum powder of 35 parts by weight, the aluminum oxide of 25 parts by weight, the clay of 30 parts by weight, the quartz powder of 10 parts by weight, the hydroxypropyl methylcellulose of 6 parts by weight, the stearic acid of 2 parts by weight and 28 parts by weight Parts of deionized water, the honeycomb ceramics were prepared by the above preparation method, and the highest firing temperature was 1420°C.

Embodiment 2

[0025] Provide the talcum powder of 40 parts by weight, the alumina of 24 parts by weight, the clay of 28 parts by weight, the quartz powder of 8 parts by weight, the hydroxypropyl methylcellulose of 6 parts by weight, the stearic acid of 2 parts by weight and 27 parts by weight Parts of deionized water are used to prepare honeycomb ceramics through the above preparation method, and the highest firing temperature is 1415°C.

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Abstract

The invention discloses a method for preparing honeycomb ceramics, in which hydroxypropyl methylcellulose is used as a binder, which enhances the plasticity during molding and reduces the difficulty of molding; uses clay to increase the strength of the product and improve the quality of the finished product. Rate. Quartz powder is used in the raw materials, which increases the firing reaction temperature and improves the thermal shock resistance of the product. Stearic acid is used in the raw materials, which relieves the resistance during extrusion molding, increases the lubricity during extrusion, makes the molding process of large-volume blanks easier, and can increase the yield of finished products.

Description

technical field [0001] The invention relates to a method for preparing honeycomb ceramics, in particular to a method for preparing honeycomb ceramics by a firing method. Background technique [0002] Diesel-powered vehicles need to be equipped with exhaust gas purifiers to purify the toxic and irritating gases and particles in the exhaust gas. The main pollutants excluded by diesel engines are HC (odor), CO, PM (black smoke), and NOX. HC causes bad smell, irritates eyes, nose, throat and respiratory tract, and is toxic and carcinogenic at the same time. CO affects the respiratory system, prevents the body from absorbing oxygen, causes headaches, and can be fatal in high concentrations. PM (black smoke) causes respiratory diseases and causes cancer. NOX irritates the respiratory tract. Exhaust gas cleaners are very effective at reducing the pollutants emitted. The diesel engine oxidation catalytic reaction carrier can make HC, CO and oxygen undergo chemical reactions to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/20C04B35/622
Inventor 陈易秋
Owner YIXING PRINCE CERAMICS
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