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Sound adsorption microsphere material and preparation method thereof

A technology of microspheres and wet materials, applied in the field of loudspeakers, to achieve the effects of long service life, good anti-aging ability, and good acoustic performance

Active Publication Date: 2018-08-07
深圳市大分子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An object of the embodiments of the present invention is to provide a sound-absorbing microsphere material and its preparation method, which aims to solve the problem that the existing sound-absorbing microsphere materials are difficult to have high impact resistance on the basis of maintaining high sound absorption performance

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  • Sound adsorption microsphere material and preparation method thereof
  • Sound adsorption microsphere material and preparation method thereof
  • Sound adsorption microsphere material and preparation method thereof

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preparation example Construction

[0024] see figure 1 , figure 1 It is a schematic flow chart of a method for preparing a sound-absorbing microsphere material provided by an embodiment of the present invention, as figure 1 As shown, the method 100 includes:

[0025] Step 10, mixing the first zeolite particles with the first adhesive, granulating and sieving to obtain the core of the sound-absorbing microsphere material.

[0026] Wherein, the first zeolite particles can be zeolite particles with one or more of the following structures: FER zeolite, MFI zeolite, MEL zeolite, CHA zeolite, IHW zeolite, IWV zeolite, ITE zeolite, UTL zeolite, VET zeolite, MTW zeolite Or FAU zeolite. Preferably, the silicon-aluminum ratio of the zeolite particle raw material is greater than 200, and a higher silicon-aluminum ratio can increase the hydrophobicity of the zeolite particle, reduce the hygroscopicity of the sound-absorbing microsphere material, and thus increase its aging resistance.

[0027] The zeolite raw material ...

Embodiment 1

[0052] 1) In terms of parts by mass, 100 parts of dry zeolite raw material particles (the zeolite structure is FER, the average pore diameter of micropores is about 0.49nm, and the particle diameter is about 2.5μm), 50 parts of water and 5 parts of silica sol. wet material.

[0053] 2) The above wet material was screened with a 60-mesh screen, and then extruded and spheronized by an extrusion spheronizer, wherein the rotation speed of the spheronizer's turntable was 400r / min and the spheronization time was 5min to obtain a preliminary formed mother core.

[0054] 3) Heat, solidify, and dry the above-mentioned preliminarily formed core in an oven at 120°C for 1.5 hours to obtain a dry core, and then sieve the above-mentioned dry core with a 60-65 mesh screen to obtain a 230-250 μm diameter Sound-absorbing microsphere material core.

[0055] 4) Uniformly mix the zeolite raw material particles with the polystyrene-acrylate emulsion in advance, and mechanically stir at 1000 rpm a...

Embodiment 2

[0059] 1) In terms of parts by mass, 100 parts of dry zeolite raw material particles (the zeolite structure is FER, the average pore diameter of micropores is about 0.49nm, and the particle diameter is about 2.5μm), 50 parts of water and 6 parts of silica sol. wet material.

[0060] 2) Screen the above wet material with a 50-mesh screen, and then use an extrusion spheronizer to extrude and spheronize. The spheronizer rotates at a speed of 400r / min and spheronizes for 5 minutes to obtain a preliminarily formed mother core.

[0061] 3) Heat, solidify, and dry the above-mentioned preliminarily formed core in an oven at 120°C for 1.5 hours to obtain a dry core, and then sieve the above-mentioned dry core with a 50-60 mesh screen to obtain a 250-270 μm diameter Sound-absorbing microsphere material core.

[0062] 4) Uniformly mix the zeolite raw material particles with the polyurethane emulsion in advance, and mechanically stir at 1000 rpm at room temperature to obtain a uniformly ...

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Abstract

The invention relates to the technical field of the loudspeaker, especially a sound adsorption microsphere material and a preparation method thereof. The method comprises the following steps: mixing first zeolite particles and first adhesive, granulating and screening to acquire a mother nucleus of a sound adsorption microsphere material; putting the mother nucleus into a bed coating granulator, and adding the second zeolite particle and the second adhesive in the bed coating granulator to perform coating and granulating, thereby acquiring the sound adsorption microsphere material with the target grain size. Through the preparation method of the sound adsorption microsphere material provided by the invention, the precise control on the mother nucleus and coating in the porous zeolite soundadsorption microsphere in the size and adhesive content and like aspects can be realized by regulating the material proportion and process parameters of the mother nucleus and the coating liquid. Thesound adsorption microsphere material prepared through the method has the mother nucleus with low adhesive content, the whole adhesive content is reduced in comparison with the traditional method, and the sound adsorption microsphere material is provided with good acoustic performance.

Description

【Technical field】 [0001] The invention relates to the technical field of loudspeakers, in particular to a sound-absorbing microsphere material and a preparation method thereof. 【Background technique】 [0002] The current sound-absorbing microsphere materials for loudspeakers are mainly obtained by bonding and molding a plurality of zeolite particles. After the sound-absorbing microsphere material is prepared in this way, the sound-absorbing microsphere material can be filled into the speaker cavity. When the speaker is working, the cavity will vibrate strongly. In the long run, the outer zeolite particles of the sound-absorbing microsphere material will fall off and the whole ball will be broken, which will affect the sound-absorbing effect and service life of the speaker. The existing solutions are generally: by increasing the content of the adhesive or selecting an adhesive with a low glass transition temperature to effectively solve the problem of impact resistance of th...

Claims

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Application Information

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IPC IPC(8): H04R31/00B01J2/00B01J2/02B01J2/16B01J2/20B01J2/28B01J13/02B01J13/04
CPCB01J2/00B01J2/02B01J2/16B01J2/20B01J2/28B01J13/02B01J13/04B01J13/043H04R31/00H04R2231/003
Inventor 不公告发明人
Owner 深圳市大分子科技有限公司
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