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Preparation method of aluminum oxide porous foam ceramic sound absorption material

An alumina ceramic and porous foam technology, applied in the field of foam ceramic materials, can solve the problems of limited industrialization promotion, difficult control, monomer toxicity, etc., and achieve the effects of simple and easy-to-obtain raw materials, convenient operation, and low equipment cost

Inactive Publication Date: 2016-05-11
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty in controlling the forming process of the conventional oxidation-reduction gel system, the inhibition of oxygen coagulation, and the toxicity of monomers, the industrialization is limited.

Method used

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  • Preparation method of aluminum oxide porous foam ceramic sound absorption material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of aluminum oxide porous foam ceramic sound-absorbing material, it comprises the steps:

[0031] Step 1: Dosing, mixing 1g of agarose with 24g of deionized water to prepare agarose solution with a concentration of 4wt.%, and then placing the prepared agarose solution in a container with a pressure of 140kpa at a temperature of 121°C Heated for 11 minutes under the same conditions, and then kept warm at 65°C for later use;

[0032] Step 2: Slurry, add 82.9g of alumina ceramic powder (particle size: 0.1-5μm) into 17.1g of ammonium polyacrylate aqueous solution (concentration: 0.5wt.%) to disperse, mix and ball mill for 6 hours after mechanical stirring, and obtain uniform dispersion Aluminum oxide ceramic slurry (solid content is 55vol.%), get 10.4g to add in the aluminum oxide ceramic slurry from the spare agarose solution of step 1, add 11.3g deionized water, obtain ceramic slurry after mixing uniformly , insulated at a temperature of 65°C for stan...

Embodiment 2

[0036] A preparation method of aluminum oxide porous foam ceramic sound-absorbing material, it comprises the steps:

[0037] Step 1: Dosing, mix 1g of agarose with 19g of deionized water to prepare agarose solution with a concentration of 5wt.%, and then place the prepared agarose solution in a container with a pressure of 140kpa at a temperature of 121°C Heated for 11 minutes under the same conditions, and then kept warm at 65°C for later use;

[0038] Step 2: Slurry, add 82.9g of alumina ceramic powder (particle size: 0.1-5μm) into 17.1g of ammonium polyacrylate aqueous solution (concentration: 0.5wt.%) to disperse, mix and ball mill for 6 hours after mechanical stirring, and obtain uniform dispersion Aluminum oxide ceramic slurry (solid content is 55vol.%), get 10.4g to add in the aluminum oxide ceramic slurry from the spare agarose solution of step 1, add 11.3g deionized water, obtain ceramic slurry after mixing uniformly , insulated at a temperature of 65°C for standby u...

Embodiment 3

[0042] A preparation method of aluminum oxide porous foam ceramic sound-absorbing material, it comprises the steps:

[0043] Step 1: Dosing, mix 1g of agarose with 15.67g of deionized water to prepare an agarose solution with a concentration of 6wt.%. Heated for 11 minutes under the same conditions, and then kept at a temperature of 65°C for later use;

[0044]Step 2: Slurry, add 82.9g of alumina ceramic powder (particle size: 0.1-5μm) into 17.1g of ammonium polyacrylate aqueous solution (concentration: 0.5wt.%) to disperse, mix and ball mill for 6 hours after mechanical stirring, and obtain uniform dispersion Aluminum oxide ceramic slurry (solid content is 55vol.%), get 10.4g to add in the aluminum oxide ceramic slurry from the spare agarose solution of step 1, add 11.3g deionized water, obtain ceramic slurry after mixing uniformly , insulated at a temperature of 65°C for standby use;

[0045] Step 3: Molding, add 0.24g of foaming agent to the ceramic slurry obtained in ste...

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Abstract

The invention discloses a preparation method of an aluminum oxide porous foam ceramic sound absorption material. The method comprises the following steps of 1, liquid preparation; 2, slurry forming; 3, shaping; 4 sintering. The non-toxic environment-friendly sepharose solution is used as gel; the aluminum oxide porous foam ceramic sound absorption material is prepared by a foam gel injection method; the prepared aluminum oxide porous foam ceramic sound absorption material has good sound absorption performance and mechanical intensity; the cost of equipment required by the preparation process is lower; the operation is convenient; the preparation period is shorter; the used raw materials are simple and can be easily obtained; the preparation method is suitable for industrial mass production.

Description

technical field [0001] The invention relates to the technical field of foamed ceramic materials, and more specifically refers to a preparation method of an alumina porous foamed ceramic sound-absorbing material. Background technique [0002] With the rapid development of the national economy, the demand for electricity is increasing day by day, so some substations are located in the center of the city or densely populated areas. In this case, the noise problem of substations has attracted more and more attention. In order to reduce the impact of transformer noise on the environment, measures can be taken from two aspects: one is to reduce the noise of the transformer itself, such as reducing the working flux density of the iron core, improving the clamping structure of the iron core and lead wires, increasing the thickness of the tank wall, etc. ; The second is to take noise reduction or sound insulation measures outside the transformer. With the in-depth research on substa...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/626C04B35/636C04B35/64C04B38/10
CPCC04B35/10C04B35/6261C04B35/636C04B35/64C04B38/10C04B2111/52C04B2235/656
Inventor 王利民卢才璇陈思敏吴昊孟晓明
Owner STATE GRID CORP OF CHINA
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