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Preparation method of porous aluminum nitride material

An aluminum nitride and powder technology is applied in the field of preparation of porous aluminum nitride materials to achieve the effects of simple equipment, low cost and simple operation.

Pending Publication Date: 2021-04-02
哈尔滨化兴软控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing aluminum nitride material is purified by simple sintering, and the obtained aluminum nitride material is relatively dense

Method used

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  • Preparation method of porous aluminum nitride material

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Effect test

specific Embodiment approach 1

[0023] A method for preparing a porous aluminum nitride material, comprising the steps of:

[0024] Step 1, adding a certain quality of Al(H 2 PO 4 ) 3 solution, then add it to a ball mill for ball milling, and then dry it in a vacuum to obtain pretreated aluminum nitride powder for use;

[0025] Step 2. Add egg white protein to deionized water, stir evenly to obtain egg white protein solution, and set aside;

[0026] Step 3. According to a certain volume ratio, weigh the pretreated aluminum nitride powder, ovalbumin solution, dispersant, and stabilizer, and add the weighed aluminum nitride powder to the egg under stirring conditions. In the albumin solution, after stirring for a certain period of time, add a dispersant, continue stirring for a certain period of time, add a stabilizer, and continue stirring for a certain period of time to obtain a premix, which is ready for use;

[0027] Step 4. Put the premixed material obtained in step 3 into a ball mill for ball milling...

specific Embodiment approach 2

[0040] A method for preparing a porous aluminum nitride material, comprising the steps of:

[0041] Step 1, adding a certain quality of Al(H 2 PO 4 ) 3 solution, then add it to a ball mill for ball milling, and then dry it in a vacuum to obtain pretreated aluminum nitride powder for use;

[0042] Step 2. Add egg white protein to deionized water, stir evenly to obtain egg white protein solution, and set aside;

[0043]Step 3. According to a certain volume ratio, weigh the pretreated aluminum nitride powder, ovalbumin solution, dispersant, and stabilizer, and add the weighed aluminum nitride powder to the egg under stirring conditions. In the albumin solution, after stirring for a certain period of time, add a dispersant, continue stirring for a certain period of time, add a stabilizer, and continue stirring for a certain period of time to obtain a premix, which is ready for use;

[0044] Step 4. Put the premixed material obtained in step 3 into a ball mill for ball milling,...

specific Embodiment approach 3

[0056] A method for preparing a porous aluminum nitride material, comprising the steps of:

[0057] Step 1, adding a certain quality of Al(H 2 PO 4 ) 3 solution, then add it to a ball mill for ball milling, and then dry it in a vacuum to obtain pretreated aluminum nitride powder for use;

[0058] Step 2. Add egg white protein to deionized water, stir evenly to obtain egg white protein solution, and set aside;

[0059] Step 3. According to a certain volume ratio, weigh the pretreated aluminum nitride powder, ovalbumin solution, dispersant, and stabilizer, and add the weighed aluminum nitride powder to the egg under stirring conditions. In the albumin solution, after stirring for a certain period of time, add a dispersant, continue stirring for a certain period of time, add a stabilizer, and continue stirring for a certain period of time to obtain a premix, which is ready for use;

[0060] Step 4. Put the premixed material obtained in step 3 into a ball mill for ball milling...

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Abstract

The invention discloses a preparation method of a porous aluminum nitride material, and belongs to the technical field of aluminum nitride material preparation. The technical problem to be solved by the invention is the porous characteristic of the aluminum nitride material. The preparation method comprises the following steps: adding an Al (H2PO4) 3 solution into aluminum nitride, then adding themixture into a ball mill for ball milling and vacuum drying, then adding ovalbumin into deionized water, uniformly stirring, then weighing pretreated aluminum nitride powder, an ovalbumin solution, adispersing agent and a stabilizing agent, adding the aluminum nitride powder into the ovalbumin solution under a stirring condition, after stirring, adding a dispersing agent and a stabilizing agentto obtain a premix, putting the premix into a ball mill for ball milling, injecting slurry obtained after ball milling into a mold, standing and foaming for a certain time, putting the mold into a drying oven for drying, putting the mold into a furnace body, introducing a protective gas, sintering, cooling, taking out of the furnace, pickling, washing with water, and drying to obtain the porous aluminum nitride material. The method is simple to operate, simple in used equipment and low in cost.

Description

technical field [0001] The invention belongs to the technical field of aluminum nitride material preparation; in particular, it relates to a preparation method of a porous aluminum nitride material. Background technique [0002] Aluminum nitride material is an atomic crystal, which belongs to diamond-like nitride, and can be stable up to 2200°C. The strength at room temperature is high, and the strength decreases slowly with the increase of temperature. Good thermal conductivity, small thermal expansion coefficient, is a good thermal shock resistance material. It has a strong ability to resist erosion of molten metal, and is an ideal crucible material for melting and casting pure iron, aluminum or aluminum alloy. Aluminum nitride is also an electrical insulator with good dielectric properties, and it is also promising for use as electrical components. The existing aluminum nitride material is purified through simple sintering, and the obtained aluminum nitride material is...

Claims

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Application Information

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IPC IPC(8): C01B21/072
CPCC01B21/0728
Inventor 不公告发明人
Owner 哈尔滨化兴软控科技有限公司
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