Sound-absorbing particle and manufacturing method thereof and loudspeaker structure

A manufacturing method and particle technology, applied in the direction of sensors, electrical components, etc., can solve the problem of sound box infiltrating into the speaker unit, hindering the operation of the speaker, etc., and achieve the effect of improving bass and optimizing filling efficiency.

Pending Publication Date: 2019-08-09
东莞顺合丰电业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this kind of porous material is usually in the form of fine powder, it is easy to seep into the speaker unit from the speaker unit, thereby hindering the movement of the speaker, so this kind of powder material is not suitable for filling directly into the speaker unit

Method used

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  • Sound-absorbing particle and manufacturing method thereof and loudspeaker structure
  • Sound-absorbing particle and manufacturing method thereof and loudspeaker structure
  • Sound-absorbing particle and manufacturing method thereof and loudspeaker structure

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Experimental program
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Embodiment

[0122]

[0123] First, use ZSM-5 porous high silica zeolite powder (the mass ratio of silicon to aluminum is 300-400, the specific surface area is 300-450m 2 / g, powder particle size less than 1μm, static water adsorption less than 1%) as zeolite raw powder.

[0124] Next, the raw zeolite powder that has passed through the roasting step is mixed with water at a weight ratio of 40:50 to form a raw zeolite powder solution. Next, adding water-based polyacrylate as a binder to the zeolite raw powder solution and stirring, then adding a water-soluble acrylic dispersant as an auxiliary agent, and after mixing and stirring, the preparation of the mixed slurry is completed.

[0125] Here, in the mixed slurry, the weight ratio of zeolite raw powder, binder, water and additives is 40:5:50:0.5.

[0126] Finally, use a sieving machine to sieve out sound-absorbing particles with a particle size of 150 μm to 300 μm. In addition, the natural vibration bulk density of sound-absorbing part...

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Abstract

The invention provides a sound-absorbing particle. The sound-absorbing particle is prepared from mixed slurry, and the mixed slurry comprises raw zeolite powder, a binder and water in the weight ratioof 40:(1-6):(40-60), wherein the particle size of the sound-absorbing particle is 120-450 micrometers, and the natural vibroflotation density of the sound-absorbing particle is 0.2-0.8 g / cm3. The invention further provides a manufacturing method of the sound-absorbing particle, and the method includes the steps of calcination, mixed slurry preparation, spray-drying granulation and sieving. By applying the sound-absorbing particle to a loudspeaker structure, the tone quality performance (especially the bass performance) of the loudspeaker can be improved, and an existing problem can be prevented that sound-absorbing powder enters a loudspeaker unit from a loudspeaker box and thus hinders the action of the loudspeaker.

Description

technical field [0001] The invention relates to a sound-absorbing particle, a manufacturing method thereof, and a loudspeaker structure using the sound-absorbing particle. Background technique [0002] A general loudspeaker is usually provided with a sound emitting unit on one side of the sound box, and a sound-absorbing cavity is arranged on the other side of the sound box. In the sound-absorbing cavity, sound-absorbing powder is usually filled as a sound-absorbing material to improve the pressure difference between the inside and outside of the speaker when the speaker is activated. Thus, the sound quality performance of the speaker is improved. [0003] Especially, in the closed sound box structure of small micro-speakers (such as the sound box of the speaker installed inside the notebook computer or mobile phone), the improvement effect of filling the sound-absorbing powder on the bass is particularly obvious. [0004] However, filling sound-absorbing powder into a clo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/04C04B26/08C04B26/16C04B26/06H04R9/06H04R9/02C04B111/52
CPCC04B26/04C04B26/08C04B26/16C04B26/06H04R9/06H04R9/02C04B2111/52C04B14/047C04B2103/408
Inventor 陈煜熙
Owner 东莞顺合丰电业有限公司
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