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Composite sound absorbing and insulating board

A technology of sound absorption and sound insulation, applied in the direction of sound insulation, sound-producing equipment, building components, etc., can solve the problems of restricting the amount of sound insulation, improvement, and insufficient sound wave isolation, so as to improve the overall sound insulation performance, high strength and light weight. Effect

Inactive Publication Date: 2017-05-31
WUHAN UNIV OF TECH
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Problems solved by technology

From the perspective of the sound insulation mechanism of materials, any material has its own trough in the sound insulation of the sound spectrum. No matter how heavy the mass of a single material is, there is still insufficient sound wave insulation at a certain frequency, which restricts the improvement of its sound insulation.

Method used

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  • Composite sound absorbing and insulating board

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Embodiment Construction

[0016] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0017] Such as figure 1 As shown, the composite sound-absorbing and insulating board of the present invention includes a fireproof layer 1, a sound-absorbing layer 2 and a sound-insulating layer 3. There are a first elastic damping layer 4 and a second elastic damping layer 5 . The first elastic damping layer 4 and the second elastic damping layer 5 are not only independent damping layers, but also a kind of adhesive layer connecting the fireproof layer 1 , the sound absorption layer 2 and the sound insulation layer 3 . Among them, the fireproof layer 1 is a plate made of glass magnesium and calcium silicate, and the sound-absorbing layer 2 is a plate made of glass wool, asbestos felt, or mineral wool. The first elast...

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Abstract

The invention discloses a composite sound absorbing and insulating board. The composite sound absorbing and insulating board has a multi-layer structure, wherein an air layer is arranged between two panel honeycomb sandwich layers, so that the respective obstructing wave troughs can be avoided, the integral sound insulation property of the board can be effectively improved, meanwhile, elastic damping layers are arranged between a fireproof layer and a sound absorption layer and between the sound absorption layer and a sound insulation layer, so that the sound insulation amount and sound insulation frequency can be further improved, the propagation of noise can be effectively obstructed, and the composite sound absorbing and insulating board has the advantages of large sound insulation amount, wide sound insulation frequency and good sound absorbing and insulating properties. Due to the adoption of the structural form that the air layer is arranged between the two panel honeycomb sandwich layers, the composite sound absorbing and insulating board also has the features that the strength is high, the weight is small, meanwhile, the weather resistance, the fireproofing property and the like are also excellent, and the composite sound absorbing and insulating board is suitable for vibration and noise reduction in various fields including buildings, ships, automobiles and the like, and is wide in application range.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction and noise reduction, and more specifically relates to a composite sound-absorbing and sound-insulating board. Background technique [0002] Noise pollution has become the main problem of environmental pollution control in the 21st century. How to meet the requirements of people not to be affected by noise and have a quiet and comfortable living and working environment, and how to improve the sound insulation capacity of the enclosure structure is an important aspect. From the point of view of the sound insulation mechanism of materials, any material has its own trough in the insulation of the sound wave spectrum. No matter how heavy the mass of a single material is, there is still insufficient sound wave insulation at a certain frequency, which restricts the improvement of its sound insulation. If two or more sound-absorbing and insulating layers with different physical properties are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/168E04B1/86B32B3/12B32B5/26B32B7/12B32B9/04B32B19/06B32B19/08B32B27/02B32B27/34
CPCG10K11/168B32B3/12B32B5/26B32B7/12B32B9/04B32B9/047B32B19/06B32B19/08B32B27/02B32B27/34B32B2262/0261B32B2262/101B32B2262/106B32B2307/102B32B2307/3065E04B1/86
Inventor 王献忠江晨半吴卫国许瑞阳汪孟乔方月明
Owner WUHAN UNIV OF TECH
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