Sandy sound absorbing plate and preparation method thereof

Abstract

The invention discloses a sandy sound absorbing plate and a preparation method thereof. The plate is mainly composed of at least two sound absorbing material bodies integrally formed; the sound absorbing material bodies are made from natural round grain quartz sand and resin glue through mixing and pressing; the two sound absorbing material bodies are provided with an adhesive covering layer respectively applied on the surfaces of the two sound absorbing material bodies; after the integrally formed sound absorbing material bodies are covered with the resin glue and the adhesive covering layer,sound absorbing holes are formed in gaps among the natural round grain quartz sand particles. The method has the advantage of obtaining a better sound absorbing effect.

Description

technical field [0001] The invention belongs to sound-absorbing materials for buildings, in particular to a floor, wall and surface widely used in concert halls, theaters, recording rooms, studios, conference rooms, gymnasiums, exhibition halls, dance halls, KTV rooms and other public places. Sandy sound-absorbing panels in ceilings and methods for their preparation. Background technique [0002] Sound originates from the vibration of an object, which causes the vibration of the adjacent air to form sound waves, and propagates around in the air medium. When the sound is transmitted to the surface of the component material, part of the sound energy is reflected, part of the sound energy penetrates the material, and part of the sound energy is converted into heat energy due to the vibration of the component material or the friction with the surrounding medium when the sound propagates in it, and the sound energy is lost. . Therefore, most sound-absorbing materials are loose ...

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Problems solved by technology

However, most porous sound-absorbing materials are not very decorative, or the production process is relatively complicated.

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