Sound-absorbing material, production method of the same, and sound-absorbing-panel

A technology of sound-absorbing material and manufacturing method, applied in the field of sound-absorbing materials, can solve the problems of low degree of freedom of aesthetics, unstable sound-absorbing characteristics, deterioration of sound-absorbing characteristics, etc., and achieve excellent sound-absorbing characteristics, avoid instability, and improve sound-absorbing characteristics. Effect

Inactive Publication Date: 2007-09-26
YAMAHA CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, glass wool, asbestos, etc. have problems in that the surrounding environment is damaged due to the generation of fibers or dust, or the sound absorption characteristics are deteriorated due to the influence of dust, moisture, chemicals, oils, etc., or the appearance is dull and aesthetically pleasing. low degree of freedom
However, since pores having a three-dimensional network structure are formed in the porous metal body produced by this method, the direction of the pores is inconsistent along the direction of the plate thickness, and the porosity and aperture ratio are inconsistent after slicing, making it difficult to control the aperture ratio. , there is a problem that the sound absorption characteristics of each product are unstable

Method used

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  • Sound-absorbing material, production method of the same, and sound-absorbing-panel
  • Sound-absorbing material, production method of the same, and sound-absorbing-panel
  • Sound-absorbing material, production method of the same, and sound-absorbing-panel

Examples

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Effect test

Embodiment 1

[0117] A mixed powder was prepared by mixing NaCl powder (via forming agent) with an average particle diameter of 420 μm and Al powder (metal powder) with an average particle diameter of 200 μm at a volume ratio of metal powder: via forming agent = 55:45 .

[0118]Next, the obtained mixed powder was hot-extruded under conditions of an extrusion ratio of 6.9 and an extrusion temperature of 450° C. to form a cylindrical block. A plate-shaped member having a thickness of 1 mm was obtained by slicing the obtained lump in a direction perpendicular to the extrusion direction. Then, this plate-shaped member was immersed in water for 6 hours to dissolve and elute NaCl, thereby producing the sound absorbing material of Example 1.

[0119] The sound absorbing material of Example 1 was observed with a scanning electron microscope, and many through holes with an average diameter of about 100 μm were observed. In addition, the opening ratio of the via hole was calculated to be 45% from t...

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Abstract

In order to provide a sound-absorbing material and a sound-absorbing panel which can be produce at a low-cost and have excellent beauty or appearance and excellent sound-absorbing characteristics, the sound-absorbing material is applied which is made from a metallic plate member (2), and multiple pierced apertures of 200 [mu] m or smaller diameter are arranged along a board thickness on the plate-shaped member (2).

Description

technical field [0001] The present invention relates to a sound-absorbing material, a method for manufacturing the sound-absorbing material, and a sound-absorbing panel. Background technique [0002] Porous sound-absorbing materials such as glass wool and asbestos are known as conventional sound-absorbing materials. However, glass wool, asbestos, etc. have problems in that the surrounding environment is damaged due to the generation of fibers or dust, or the sound absorption characteristics are deteriorated due to the influence of dust, moisture, chemicals, oils, etc., or the appearance is dull and aesthetically pleasing. low degrees of freedom. [0003] In addition, glass wool, asbestos, and the like are generally not used alone, but must be used in combination with air-permeable materials such as cloth or nets for good appearance or durability, thereby limiting the aesthetics. [0004] Also known is a sound-absorbing panel in which a through-hole is provided in a plate-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/162
CPCG10K11/172
Inventor 平工达也中谷隆雄多田吉宏
Owner YAMAHA CORP
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