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Method for preparing high-strength aluminum oxide foamed ceramic

A foamed ceramic and alumina technology, applied in the field of porous materials, can solve the problems of uneven pore size and reduced strength of foamed ceramics, and achieve the effects of uniform pore size distribution, increased strength and increased porosity

Active Publication Date: 2018-11-20
郑州孚莱孚特性材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: Aiming at the problem that the pore size of the traditional alumina foam ceramics is not uniform, and the strength of the foam ceramics is obviously reduced under the condition of high porosity, a preparation method of high-strength alumina foam ceramics is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022]Mix glucose and water in a beaker at a mass ratio of 1:25, and add potassium iodate 0.2 times the mass of glucose to the beaker, stir and mix for 12 hours at a temperature of 40°C and a rotational speed of 350r / min to obtain Glucose mixed solution, mix glucose mixed solution with barium chloride solution with a mass fraction of 12% at a mass ratio of 1:5, stir and mix for 90 minutes at a temperature of 40°C and a rotational speed of 400r / min, and then filter to obtain Filtrate, mix the filtrate and sodium sulfate solution with a mass fraction of 20% at a mass ratio of 1:4, stir and mix for 80 minutes at a temperature of 40°C and a rotational speed of 400r / min, then filter and remove the filter residue to obtain a modified Glucose mixed solution; mix polyallylamine and water at a mass ratio of 1:110, stir and mix for 60 minutes at a temperature of 35°C and a rotational speed of 400r / min, then adjust with a sodium hydroxide solution with a mass fraction of 15%. The pH of t...

example 2

[0024] Mix glucose and water in a beaker at a mass ratio of 1:25, and add potassium iodate 0.2 times the mass of glucose to the beaker, stir and mix for 12 hours at a temperature of 40°C and a rotational speed of 350r / min to obtain Glucose mixed solution, mix glucose mixed solution with barium chloride solution with a mass fraction of 12% at a mass ratio of 1:5, stir and mix for 90 minutes at a temperature of 40°C and a rotational speed of 400r / min, and then filter to obtain Filtrate, mix the filtrate and sodium sulfate solution with a mass fraction of 20% at a mass ratio of 1:4, stir and mix for 80 minutes at a temperature of 40°C and a rotational speed of 400r / min, then filter and remove the filter residue to obtain a modified Glucose mixed solution; mix polyallylamine and water at a mass ratio of 1:110, stir and mix for 60 minutes at a temperature of 35°C and a rotational speed of 400r / min, then adjust with a sodium hydroxide solution with a mass fraction of 15%. The pH of ...

example 3

[0026] Mix glucose and water in a beaker at a mass ratio of 1:25, and add potassium iodate 0.2 times the mass of glucose to the beaker, stir and mix for 12 hours at a temperature of 40°C and a rotational speed of 350r / min to obtain Glucose mixed solution, mix glucose mixed solution with barium chloride solution with a mass fraction of 12% at a mass ratio of 1:5, stir and mix for 90 minutes at a temperature of 40°C and a rotational speed of 400r / min, and then filter to obtain Filtrate, mix the filtrate and sodium sulfate solution with a mass fraction of 20% at a mass ratio of 1:4, stir and mix for 80 minutes at a temperature of 40°C and a rotational speed of 400r / min, then filter and remove the filter residue to obtain a modified Glucose mixed solution; mix polyallylamine and water at a mass ratio of 1:110, stir and mix for 60 minutes at a temperature of 35°C and a rotational speed of 400r / min, then adjust with a sodium hydroxide solution with a mass fraction of 15%. The pH of ...

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Abstract

The invention discloses a method for preparing a high-strength aluminum oxide foamed ceramic and belongs to the technical field of porous materials. The method comprises the following steps: mixing deionized water with polyvinyl alcohol solution in a mass ratio of (5:1)-(5:2), adding absolute ethyl alcohol which is 0.1-0.2 time of the mass of the deionized water, ammonium polyacrylate which is 0.1-0.2 time of the mass of the deionized water and alumina powder which is 0.3-0.4 times of the mass of the deionized water, carrying out ball milling and mixing so as to obtain a mixed blank material,mixing the mixed blank material with a hydroxymethyl cellulose solution according to a mass ratio of (8:1)-(10:1), adding an additive which is 0.3-0.5 time of the mass of the mixed blank material, stirring and mixing, injecting into a mold, carrying out heat-preservation curing, and calcining, thereby obtaining the high-strength aluminum oxide foamed ceramic. The high-strength aluminum oxide foamed ceramic prepared according to the technical scheme of the invention is uniform in pore size, has the characteristics of being high in strength under a high porosity condition, and has wide prospectsin development of the porous material technique industry.

Description

technical field [0001] The invention discloses a preparation method of high-strength alumina foam ceramics, belonging to the technical field of porous materials. Background technique [0002] Ceramic materials have been paid more and more attention by the scientific community. People call the ceramics that appeared in the late 1940s new ceramics, and new ceramics have attracted people's attention. With the rapid development of modern industry, the performance requirements of materials are further improved. People gradually realize that ceramics have many excellent characteristics, such as corrosion resistance, high temperature resistance, light weight, high hardness, high strength and long service life. These The advantages are unmatched by other materials. With the development of material science and technology, there is a special need for new materials that adapt to scientific development. Porous ceramics is a new type of ceramic material developed as a bacterial filter ...

Claims

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Application Information

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IPC IPC(8): C04B38/10C04B38/00C04B35/10C04B35/622C04B35/624C04B35/626
CPCC04B35/10C04B35/622C04B35/624C04B35/62605C04B38/0022C04B38/103C04B2235/6567C04B2235/96C04B38/0074C04B38/0054
Inventor 刘菊花刘侠宋宇星
Owner 郑州孚莱孚特性材料有限公司
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