High-efficiency acoustic anionic putty powder for hidden flat acoustic speaker

Abstract

The invention provides a high-efficiency acoustic anionic putty powder for a hidden flat acoustic speaker. The putty powder is prepared from the following components in percentage by volume: 10-70 percent of hollow glass beads, 5-30 percent of superfine triple superphosphate, 5-30 percent of ground calcium carbonate, 1-10 percent of hydroxypropyl methyl cellulose, 1-10 percent of white lignocellulose, 2-20 percent of sandwich rubber powder, 1-20 percent of redispersible latex powder, 1-10 percent of dry powdered polyvinyl alcohol and 1-5 percent of anionic powder. The high-efficiency acoustic anionic putty powder for a hidden flat acoustic speaker is small in density and light in weight, has small blockage and little absorption to acoustic wave, and can reduce attenuation to acoustic loudness.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-efficiency acoustic negative ion putty powder for a concealed flat-panel audio system. Background technique [0002] During the development of hidden flat-panel audio in recent years, the various formulas of putty materials currently on the market as part of its sounding body cannot meet the matching requirements. The existing putty powder for interior wall decoration has a high density. The volume is heavy, which seriously blocks and absorbs a large amount of sound wave energy, reducing the sound loudness by more than 10dB, and because the original formula is mainly based on heavy calcium carbonate, due to its own weight and sound wave absorption, it reduces the sound while reducing the sound. The high frequency emitted by the speaker is also partially absorbed, resulting in the absence of some frequency bands when listening to the sound. In order to make up...

AI Technical Summary

Problems solved by technology

[0002] During the development of hidden flat-panel audio in recent years, the various formulas of putty materials currently on the market as part of its sounding body cannot meet the matching requirements. The existing putty powder for interior wall decoration has a high density. The volume is heavy, which seriously blocks and absorbs a large amount of sound wave energy, reducing the sound loudness by more than 10dB, and because the original formula is mainly based on heavy calcium carbonate, due to its own weight and sound wave absorption, it reduces the sound while reducing the sound. The high frequency emitted by the speaker is also partially absorbed, resulting in the absence of some frequency bands when listening to the sound

In order to make up for the loudness of the sound, it is necessary to increase a large amount of volume, resulting in inefficiency of the entire audio system, increasing the heat generation and instability of the system

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