Multi-layer composite plate

Abstract

The invention discloses a multi-layer composite plate and belongs to a building finishing and noise reduction material. The plate comprises a fiberglass outer plate body, a sound absorption plate bodyand a fiberglass inner plate body, a fire retardant outer layer is arranged on the surface of the outer side of the fiberglass outer plate body, and the inner side of the fiberglass outer plate bodyis connected with the outer side of the sound absorption plate body. The inner side of the sound absorption plate body is connected with the outer side of the fiberglass inner plate body, a fire retardant inner layer is arranged on the surface of the inner layer of the fiberglass inner plate body, and the fire retardant outer layer, the fiberglass outer plate body, the sound absorption plate body,the fiberglass inner plate body and the fire retardant inner layer are sequentially connected to form the multi-layer composite plate from outside to inside. According to the multi-layer composite plate, by arranging the structures such as the fiberglass plate bodies and the sound absorption plate body, sound resistance in the sound spreading process is increased, particularly sound passes through inverted-T-shaped holes or inverted-T-shaped grooves formed in the fiberglass outer plate body, enters the sound absorption plate body, and then is reflected many times, so that the sound intensityis greatly reduced, the effects of noise reduction, sound absorption, fire proofing and damp proofing are achieved, and the multi-layer composite plate can be widely applied to occasions such as family cinemas, meeting rooms and living rooms.

Description

technical field [0001] The invention belongs to building decoration noise reduction materials, in particular to a multilayer composite board. Background technique [0002] Urban noise seriously affects the normal life and personal health of urban residents. Urban noise mainly refers to traffic noise, factory noise, construction noise and social life noise. It has become one of the conspicuous urban environmental pollution problems. Usually, sound-absorbing materials are used to produce some sound-absorbing panels, sound-insulating walls, sound-absorbing nets and mufflers to control noise pollution, and some sound-absorbing materials are produced after foaming to improve product performance. At present, the foamed sound-absorbing panels sold on the market have unsatisfactory sound-absorbing effects, and cannot completely eliminate sound and prevent sound pollution. At the same time, the existing sound-absorbing panels lack a directional structure and are not designed for th...

AI Technical Summary

Problems solved by technology

At present, the sound-absorbing panels sold on the market after foaming are not ideal for sound attenuation, and cannot completely eliminate sound and prevent sound pollution.

At the same time, the existing sound-absorbing panels lack a directional structure and are not designed for the sound source, especially for some conference rooms, home theaters, living rooms and other occasions where the sound propagation direction is known. How to eliminate the sound and achieve the effects of noise reduction and sound absorption become a research hotspot

Images