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A kind of composite sound-absorbing material and its preparation method and application

A technology for sound-absorbing materials and uses, which is applied in the field of composite sound-absorbing materials and their preparation, can solve the problems that sound-absorbing characteristics cannot be customized and adjusted, sound-absorbing materials have low flame retardancy, and poor environmental protection performance, and achieve good fire performance and average High sound absorption coefficient, not easy to be affected by temperature and humidity

Active Publication Date: 2018-11-27
中电声韵声学工程技术(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the sound-absorbing materials commonly used in the domestic market cannot achieve large-area seamless decoration, and the sound-absorbing properties cannot be customized and adjusted. The required thickness is relatively large, the cost is high, and the environmental protection performance is poor. Low

Method used

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  • A kind of composite sound-absorbing material and its preparation method and application
  • A kind of composite sound-absorbing material and its preparation method and application
  • A kind of composite sound-absorbing material and its preparation method and application

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preparation example Construction

[0066] In the above method for preparing a composite sound-absorbing material, a sand layer 1 fixedly connected with the polymer layer 2 is prepared on the top of the polymer layer 2 to obtain a composite sound-absorbing material.

[0067] The preparation method of the composite sound-absorbing material of the invention is simple in process and convenient for large-area seamless decoration construction.

[0068] Preferably, after the sand grains and the adhesive are fully mixed, the obtained material is used to prepare the sand layer 1 fixedly connected with the polymer layer 2 on the top of the polymer layer 2 .

[0069] In the present invention, the sand layer 1 is prepared on the top of the polymer layer 2, which can be carried out by conventional techniques such as smearing or sandblasting.

[0070] The blasting is preferably carried out in a straight line and at a constant speed.

[0071] Further preferably, the sand grains, the adhesive and water are fully mixed, and th...

Embodiment 1

[0081] A method for preparing a composite sound-absorbing material, comprising the steps of:

[0082] (1) Selecting coarse sand, medium sand, fine sand and extra fine sand (manufacturers are all Pingshan County Liyuan Mineral Products Processing Plant) is river sand with a mass ratio of 30:10:50:10 for subsequent use;

[0083] (2) Mix 108 construction rubber powder (manufactured by Beijing Goode Jiayuan New Technology Co., Ltd.) with a mass ratio of 1:1 and water for full use;

[0084] (3) soak the river sand obtained in step (1) in the solution obtained in step (2), and fully stir;

[0085] (4) discharge the liquid on the upper part of the river sand sediment layer after standing still, and after fully stirring, the gained slurry is smeared on a polystyrene foam board (manufactured by Hebei Huaneng Chemical Thermal Insulation Building Materials Co., Ltd.) with a thickness of 5mm to obtain 0.5 mm thick sand layer;

[0086] (5) Natural drying, after the water is fully volatil...

Embodiment 2

[0088] A method for preparing a composite sound-absorbing material, comprising the steps of:

[0089] (1) select coarse sand, medium sand, fine sand and extra fine sand (manufacturers are Liyuan Mineral Products Processing Plant in Pingshan County) for use as river sand with a mass ratio of 10:30:50:10 for subsequent use;

[0090] (2) Mix 108 construction rubber powder (manufactured by Beijing Goode Jiayuan New Technology Co., Ltd.) with a mass ratio of 1:10 and water for full use;

[0091] (3) soak the river sand obtained in step (1) in the solution obtained in step (2), and fully stir;

[0092](4) Drain the liquid on the upper part of the river sand sediment layer after standing still, and after fully stirring, apply the gained slurry on a phenolic resin board (manufactured by Tianjin Sanxing Weiye Thermal Insulation Material Factory) with a thickness of 7mm to obtain a 0.7mm thick sand layer;

[0093] (5) Natural drying, after the water is fully volatilized, the 108 glue ...

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Abstract

The invention provides a composite sound absorption material and a preparation method and application thereof. The composite sound absorption material comprises a high polymer layer and a sand layer at the top of the high polymer layer. The preparation method is simple in process, large-area seamless decorating construction is facilitated, the high polymer layer mainly absorbs medium-high frequency sound, and the sand layer can absorb all-frequency sound. On the premise of sufficiently keeping sound absorption properties of the high polymer layer and the sand layer, the composite sound absorption material can achieve better sound absorption effects. Besides, the composite sound absorption material is made of environment-friendly materials, does not release harmful substances and completely meets related national environmental protection standards, thereby being an environment-friendly sound absorption product. Compared with a high-polymer sound absorption material, the composite sound absorption material has the advantages that the outer sand layer is incombustible and has better fireproof performance, and the composite sound absorption material has excellent sound absorption and heat insulation properties and stable physical performance, is not easily affected by temperature and humidity and can be used for a long time.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a composite sound-absorbing material and its preparation method and application. Background technique [0002] Sound-absorbing material is a functional material for building decoration. It has the dual requirements of sound absorption and decoration. It must be beautiful and meet the special requirements of sound absorption. Any material can absorb sound, but the degree of absorption varies greatly. It is usually a material with an average sound absorption coefficient greater than 0.2, which is listed as a sound-absorbing material. [0003] At present, the sound-absorbing materials commonly used in the domestic market cannot achieve large-area seamless decoration, and the sound-absorbing properties cannot be customized and adjusted. The required thickness is relatively large, the cost is high, and the environmental protection performance is poor. Low. [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/06B32B27/30B32B27/32B32B27/36B32B27/40B32B27/42B32B33/00
CPCB32B9/002B32B9/045B32B9/046B32B9/048B32B27/06B32B27/302B32B27/304B32B27/32B32B27/36B32B27/40B32B27/42B32B33/00B32B2264/0214B32B2266/0214B32B2307/102B32B2307/3065B32B2607/02
Inventor 张勇敢燕翔王熙伟
Owner 中电声韵声学工程技术(北京)有限公司
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