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Foamed aluminum noise-reducing acoustic board and application thereof

A technology of foamed aluminum and sound-absorbing panels, applied in the field of foamed aluminum noise reduction

Inactive Publication Date: 2010-12-08
王占清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Vibration and noise reduction materials must not only have good vibration-absorbing performance, but also must be safe, durable, easy to construct, easy to maintain, lightweight, and take up less space. In addition, they should also have properties such as flame retardancy and low cost, but so far no such A sound insulation and noise reduction material that can meet various requirements

Method used

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  • Foamed aluminum noise-reducing acoustic board and application thereof
  • Foamed aluminum noise-reducing acoustic board and application thereof
  • Foamed aluminum noise-reducing acoustic board and application thereof

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 Shown is a schematic structural diagram of the noise-reducing and sound-insulating panel of the present invention, which includes a foamed aluminum layer 1, a honeycomb aluminum layer 2 and a solid aluminum layer 3. The above three layers of plates are fixed and stacked together in sequence, and can be bonded together with a high-strength adhesive.

[0018] figure 2 Shown is a cross-sectional view of the foamed aluminum layer, and a large number of sponge-like structures can be seen in the cross-section.

[0019] The aluminum foam layer 1 is a foam material made by melting an aluminum ingot, adding a foaming agent and a thickener, and foaming.

[0020] The density of the foamed aluminum is 0.2-0.4g / cm 3 .

[0021] The foamed aluminum noise-reducing and sound-absorbing board of the invention can be applied in tunne...

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Abstract

The invention discloses a foamed aluminum noise-reducing acoustic board which comprises a foamed aluminum layer, a honeycomb aluminum layer and a solid aluminum board layer which are sequentially overlaid, wherein the foamed aluminum layer is formed by melting aluminum ingot, adding a foaming agent and a thickening agent, and foaming into a foam material. The noise-reducing acoustic board of the invention can be applied to noise reduction of tunnels, theaters and high-speed rail projects. Because the spongy structure and the metal material with semi-permanent acoustic absorption performance are adopted, the acoustic board is 100% flame retardant and is free of the hazard of toxic gas, and the spongy structure body can effectively absorb energy, has excellent energy absorbing effect in high impact deformation rate, is non-toxic and tasteless, can not generate substances such as dust, peculiar smell, arsenic acid and the like harmful to the human body, can be 100% regenerated and utilized, and can be manufactured from waste aluminum.

Description

technical field [0001] The invention relates to foamed aluminum noise reduction technology, in particular to a foamed aluminum noise reduction and sound-absorbing board and its application. Background technique [0002] With the high speed of rail transit, the vibration and noise caused by train operation will become more severe, and the high-speed rail transit line will pass through many cities. Life, and even affect the normal operation of nearby schools, research institutes, hospitals, banks, etc. [0003] The experience of developing high-speed rail transit abroad shows that the application of vibration and noise reduction products can not only reduce the fatigue and wear of vehicles, tracks, and electrical equipment, reduce maintenance costs, but also reduce the impact of vibration and noise on residents and buildings along the line. To this end, we should actively learn from the successful experience of foreign countries, vigorously study the vibration and noise reduc...

Claims

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Application Information

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IPC IPC(8): E04B1/86E21D11/38B61D17/04B61D17/12B61D17/10B61D17/08
CPCY02T30/34Y02T30/00
Inventor 王占清
Owner 王占清
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