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Method for preparing foamed ceramic sound absorption material through protein foaming

A technology of foam ceramics and sound-absorbing materials, applied in ceramic products, applications, household appliances, etc., can solve problems such as difficulty in control, and achieve the effects of no pollution to the environment, low preparation costs, and wide sources of raw materials

Inactive Publication Date: 2013-04-24
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the currently commonly used preparation methods of foam ceramics, it is easier to control the pore size and porosity of foam ceramics, but it is more difficult to control the pore morphology (such as open cells, closed cells, etc.) of foam ceramics.

Method used

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  • Method for preparing foamed ceramic sound absorption material through protein foaming
  • Method for preparing foamed ceramic sound absorption material through protein foaming
  • Method for preparing foamed ceramic sound absorption material through protein foaming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a foam ceramic sound-absorbing material by foaming protein of the present invention, comprising the following steps:

[0033] (1) Preparation of foam slurry: mix and dissolve silicon nitride powder, sintering aid (choose yttrium oxide) and dispersant (DURAMAX-D3005 dispersant produced by Rohm and Haas) in water, among which silicon nitride powder The amount of water added to the solvent is 40vol.%, the amount of sintering aid added to the silicon nitride powder is 5wt.%, the amount of dispersant added to the solid phase component is 0.35wt.%, and then added to the mixture Whey protein powder (the addition of whey protein powder is 8wt.% of the mixture) is ball milled once for 20 hours, and egg white protein powder is added to the mixed components after the first ball mill (the addition of egg white protein powder is mixed 2wt.% of the component is subjected to secondary ball milling, and foam slurry is obtained after secondary ball milling for 10 ...

Embodiment 2

[0040] A method for preparing a foam ceramic sound-absorbing material by foaming protein of the present invention, comprising the following steps:

[0041] (1) Preparation of foam slurry: mix and dissolve silicon nitride powder, sintering aid (choose yttrium oxide) and dispersant (DURAMAX-D3005 dispersant produced by Rohm and Haas) in water, among which silicon nitride powder The amount of water added to the solvent is 50vol.%, the amount of sintering aid added to the silicon nitride powder is 5wt.%, the amount of dispersant added to the solid phase component is 0.35wt.%, and then added to the mixture Whey protein powder (the addition of whey protein powder is 4wt.% of the mixture) is ball milled once for 20 hours, and egg white protein powder is added to the mixed components after the first ball mill (the addition of egg white protein powder is mixed 4wt.% of the components) for secondary ball milling, and foam slurry was obtained after secondary ball milling for 10 hours;

...

Embodiment 3

[0048] A method for preparing a foam ceramic sound-absorbing material by foaming protein of the present invention, comprising the following steps:

[0049] (1) Preparation of foam slurry: mix and dissolve silicon nitride powder, sintering aid (choose yttrium oxide) and dispersant (DURAMAX-D3005 dispersant produced by Rohm and Haas) in water, among which silicon nitride powder The amount of water added to the solvent is 50vol.%, the amount of sintering aid added to the silicon nitride powder is 5wt.%, the amount of dispersant added to the solid phase component is 0.35wt.%, and then added to the mixture Whey protein powder (the addition of whey protein powder is 8wt.% of the mixture) is ball milled once for 20 hours, and egg white protein powder is added to the mixed components after the first ball mill (the addition of egg white protein powder is mixed 2wt.% of the component is subjected to secondary ball milling, and foam slurry is obtained after secondary ball milling for 10 ...

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Abstract

The invention discloses a method for preparing a foamed ceramic sound absorption material through protein foaming. The method comprises the following steps of: dissolving silicon nitride powder, sintering aids and a dispersing agent into water, adding whey protein powder for carrying out the primary ball milling, and then adding whey protein powder for carrying out the secondary ball milling; injecting the obtained foam slurry into a mold, carrying out water bath and heat preservation, and curing to obtain a green body; and taking out the green body for the dry treatment, heating up the foamed ceramic green body to a protein burn-off temperature, carrying out heat preservation, finally heating up to the sintered temperature under the nitrogen protection, and carrying out the heat preservation and sintering to obtain foamed ceramics. The method disclosed by the invention has the advantages of being low in equipment cost, wide in raw material sources, low in preparation cost, convenient to operate and prepare, free from pollution to the environment and the like.

Description

technical field [0001] The invention relates to a preparation method of a sound-absorbing material, in particular to a preparation method of a foam ceramic sound-absorbing material. Background technique [0002] While the development of society brings convenience to people's life, it also brings some negative products. Noise, as the chief culprit that destroys the quality of people's work and living environment, not only seriously harms the human auditory system, makes people tired and deaf, but also accelerates the aging of buildings and mechanical structures, affecting the accuracy and service life of equipment and instruments. In view of this, the research and development of sound-absorbing materials has become an important means to reduce noise hazards and improve people's quality of life. According to the difference of sound-absorbing mechanism, sound-absorbing materials can be divided into two categories: resonant sound-absorbing materials and porous sound-absorbing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B35/622
Inventor 周新贵张长瑞余金山刘荣军殷刘彦王洪磊赵爽罗征杨备杨会永
Owner NAT UNIV OF DEFENSE TECH
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