Building material with sound insulation function and preparation method thereof

Abstract

The invention provides a building material with a sound insulation function and a preparation method thereof. The building material sequentially comprises an upper base layer, a rigid foam layer, a composite layer and a lower base layer from top to bottom, and the composite layer is composed of a sound absorption layer, a polyurethane elastomer layer and a sound insulation layer; the polyurethane elastomer layer comprises waterborne polyurethane, silicon dioxide aerogel, a plurality of supporting assemblies and damping assemblies, the silicon dioxide aerogel is dispersed in the waterborne polyurethane, and the supporting assemblies and the damping assemblies are vertically and equidistantly dispersed between the waterborne polyurethane and the silicon dioxide aerogel; the double-layer sound barrier combined structure and the polyurethane elastomer layer are adopted, in the transmission process of noise, sound is transmitted across media for multiple times, so that sound energy is gradually attenuated or consumed in a large amount, the noise can be effectively blocked and absorbed, and the sound insulation effect is excellent; the building material is reasonable in structural design, the rigid foam layer is contained in the building material, the hardness of the upper base layer and the lower base layer is large, the internal sound absorption layer is light in texture and can be cut at will, and operation is easy and convenient.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a building material with sound insulation function and a preparation method thereof. Background technique [0002] In April 2015, WHO and the EU Cooperative Research Center published a comprehensive report on the health effects of noise, "The Burden of Disease Caused by Noise Pollution". Although the targets are developed countries such as the European Union, they pointed out for the first time that noise pollution not only makes people irritable and poor sleep quality, but also causes or triggers diseases such as heart disease and tinnitus, thereby reducing people's life expectancy. Noise hazard has become the second recognized health killer after air pollution. [0003] Noise can be seen everywhere in daily life. Ordinary sound-insulating building materials weaken transmission sound and block sound transmission. They cannot be as porous, loose, and breat...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a building material with sound insulation function to solve the problem of poor sound insulation performance and environmental protection of existing building materials, which can effectively absorb and block noise, and has a certain degree of heat preservation and flame retardant properties

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