A sound-absorbing and noise-reducing ceramic component

A ceramic and component technology, applied in the field of ceramic components with sound absorption and noise reduction function, can solve the problems of unsatisfactory effect, aging, low strength, etc., and achieve the effect of remarkable sound absorption and noise reduction, good absorption capacity and good weather resistance.

Active Publication Date: 2015-08-26
佛山中科产业技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main technical measure for road sound absorption and noise reduction is to install sound insulation walls on both sides of the road. The materials used include glass, plastic, metal, rock wool (asbestos) boards, perlite boards, porous ceramic boards, etc., but in actual use There are major deficiencies: for glass, metal, and plastic materials, because of their dense material and smooth surface, they have little absorption of sound, but only play a role in blocking noise, and a large amount of noise still diffuses into the air. The effect of sound absorption and noise reduction is not ideal, and there are problems of corrosion and aging of metal and plastic in the open air, and the service life is short
For rock wool (asbestos) boards and perlite boards, although their porosity is higher and the sound absorption effect is better than that of dense materials, they also have the problem of low strength and easy damage, and rock wool boards will drift away after weathering. fiber dust, damaging the surrounding environment
The porous ceramic plate has high strength and good outdoor weather resistance. It is a promising outdoor sound-absorbing and noise-reducing material. However, the effect of sound-absorbing and noise-reducing is still not ideal, and the construction cost is high, so it has not been widely used.

Method used

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  • A sound-absorbing and noise-reducing ceramic component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Weigh the raw materials according to the following proportions: plastic clay 21%, kaolin 17%, feldspar powder 33%, quartz powder 15%, sawdust powder 5%, coal gangue powder 9%, a total of 200 kg of ingredients, put it into a ball mill and water ball mill for 12 hours After that, use a mud press to dehydrate to obtain a plastic mud cake. Put the mud cake into a vacuum mud mill to practice mud to remove air bubbles in the mud and make the water in the mud uniform, improve the plasticity of the mud, and circulate the mud. After three times, the obtained mud sticks were placed in an aging room for 24 hours. If necessary, plasticizers and body enhancers can be added to the mud.

[0049] Put the stale mud sticks into a vacuum extruder, extrude the square honeycomb ceramic billet with a side length of 120 mm. The channel density in the honeycomb ceramic is 200 holes per square inch, and the channel cross-section is square. Use a cutter The ceramic blank is cut into a sound-absorb...

Embodiment 2

[0051] Weigh the raw materials according to the following proportions: plastic clay 21%, kaolin 14%, feldspar powder 23%, quartz powder 25%, carbon powder 6%, fly ash 11%, a total of 200 kg of ingredients, put it into a ball mill and water ball mill for 12 hours After that, use a mud press to dehydrate to obtain a plastic mud cake. Put the mud cake into a vacuum mud mill to practice mud, remove air bubbles in the mud and make the water in the mud uniform, improve the plasticity of the mud, and circulate the mud. After three times, the obtained mud sticks were placed in an aging room for 24 hours. If necessary, plasticizers and body enhancers can be added to the mud.

[0052] Put the stale mud sticks into a vacuum extruder to extrude a square honeycomb ceramic billet with a side length of 120 mm. The channel density in the honeycomb ceramic is 64 holes per square inch, and the channel cross-sectional shape is polygonal (such as image 3 ), use a cutter to cut the billet into a so...

Embodiment 3

[0056] Weigh the raw materials according to the following proportions: plastic clay 18%, clay 20%, feldspar powder 36%, quartz powder 20%, sawdust powder 6%, a total of 200 kilograms of ingredients, put in a ball mill and water ball mill for 12 hours, then use a mud press Dehydrate to obtain plastic mud cakes, put the mud cakes in a vacuum mud mixer to practice mud, remove the air bubbles in the mud and make the water in the mud uniform, improve the plasticity of the mud, and after three cycles of mud practice, the obtained The mud sticks are placed in the stale room for 24 hours.

[0057] Put the stale mud sticks into a vacuum extruder to extrude a rectangular honeycomb ceramic billet with a side length of 150×100 mm. The channel density in the honeycomb ceramic is 400 holes per square inch, and the channel cross-sectional shape is circular. Use a curved cutter to cut the billet into a sound-absorbing and noise-reducing honeycomb ceramic body with an angle of α=90° and a thickne...

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Abstract

The invention relates to a sound-absorbing noise-reducing ceramic assembly. The sound-absorbing noise-reducing ceramic assembly comprises at least one sound-absorbing noise-reducing ceramic unit; the sound-absorbing noise-reducing ceramic unit is multichannel cellular ceramic, and the channel inner wall of the multichannel cellular ceramic is in a porous structure. The ceramic assembly has excellent sound-absorbing and noise-reducing functions, and is suitable for sound-absorbing space indoor and outdoor, and is especially suitable for being used in outdoor sound-absorbing noise-reducing engineering such as highway, high speed railway, tunnel and subway, and the ceramic assembly has the obvious effect for absorbing sound and reducing noise, and has the advantages of convenient construction, good weatherability and environmental protection.

Description

Technical field [0001] The invention relates to the field of ceramic materials and acoustic technology in inorganic non-metallic materials, in particular to ceramic components with sound absorption and noise reduction functions. Background technique [0002] With the development of highways, high-speed railways, and urban subways, the speed of traffic vehicles is getting faster and faster, and the resulting noise is getting higher and higher, which has an increasing impact on the production and life of residents on both sides of the road. Therefore, the sound absorption and noise reduction of roads has become an important subject with great development prospects. At present, the main technical measure for road sound absorption and noise reduction is to install sound insulation walls on both sides of the road. The materials used are glass, plastic, metal, rock wool (asbestos) board, perlite board, porous ceramic board, etc., but in actual use There are major shortcomings: for gla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13E01F8/00
Inventor 蔡晓峰席红安于伟东
Owner 佛山中科产业技术研究院
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