Sound-absorbing material, preparation method thereof and loudspeaker using sound-absorbing material

A technology of sound-absorbing materials and adsorption materials, applied in the field of loudspeakers, can solve the problems of loss of acoustic properties of sound-absorbing materials, unfavorable thermal conductivity of sound-absorbing materials, and excessive volume occupied by heat-conducting materials, and achieve small acoustic performance, excellent thermal conductivity, and small volume Effect

Pending Publication Date: 2022-01-04
AAC MICROTECH CHANGZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the heat-conducting material 21 is in the form of particles or flakes, when filled into the sound-absorbing material, the heat-conducting materials are in a discrete state separated from each other, which is not conducive to improving the overall heat-conducting performance of the sound-absorbing material
If the thermal conductivity of the sound-absorbing material is improved by increasing the content of the heat-conducting material, the heat-conducting material will occupy too much volume and the content of the absorbing material in the sound-absorbing material will decrease, resulting in the loss of the acoustic performance of the sound-absorbing material

Method used

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  • Sound-absorbing material, preparation method thereof and loudspeaker using sound-absorbing material
  • Sound-absorbing material, preparation method thereof and loudspeaker using sound-absorbing material
  • Sound-absorbing material, preparation method thereof and loudspeaker using sound-absorbing material

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preparation example Construction

[0056] Preparation method One includes the following steps:

[0057] S1-1, dispersing the adsorbent material to the heat conductive material into the solvent, and mixed with a mixed solution containing the adsorbent material and the thermally conductive material; wherein the solvent can employ at least one in water, ethanol, and acetone.

[0058] S1-2, adding adhesives in a mixed solution containing an adsorbent material and a thermally conductive material, and mixing a slurry containing an adsorbent material and a heat conductive material;

[0059] S1-3, slurry containing adsorbent materials and thermally conductive materials to obtain product particles by granulation processes;

[0060] S1-4, product particles heat treatment to obtain a sound absorbing material.

[0061] The preparation method includes the following steps:

[0062] S2-1, dispersing the adsorbent material into the solvent, and mixing uniformly obtaining a mixed solution containing the adsorbent material;

[0063]...

Embodiment 1

[0074] The sound absorbing material was prepared by the preparation method, as follows:

[0075] The adsorbent material is dispersed from the thermally conductive material into the solvent, and mixed with the adsorbent material and the thermally conductive material is mixed by stirring. Among them, the adsorbent material uses a MEL molecular sieve, and the thermally conductive material is used for nanocarbon fiber material, and the diameter of the nanocarbon fiber material is 150 nm to 200 nm, and the ratio of the length and diameter of the nanocarbon fiber material is 70, the solvent is water.

[0076] The adhesive is added to the mixed solution containing the adsorption material and the thermally conductive material, and uniformly obtains the slurry containing the adsorbent material and the thermally conductive material by stirring. Among them, adhesive uses polyacrylic acid adhesive.

[0077] The slurry containing the adsorption material and the heat conductive material obtains...

Embodiment 2

[0081] The sound absorbing material was prepared by the preparation method, as follows:

[0082] The adsorbent material is dispersed from the thermally conductive material into the solvent, and mixed with the adsorbent material and the thermally conductive material is mixed by stirring. Among them, the adsorbent material uses a MEL molecular sieve, and the thermally conductive material is used for nanocarbon fiber material, and the diameter of the nanocarbon fiber material is 150 nm to 200 nm, and the ratio of the length and diameter of the nanocarbon fiber material is 70, the solvent is water.

[0083] The adhesive is added to the mixed solution containing the adsorption material and the thermally conductive material, and uniformly obtains the slurry containing the adsorbent material and the thermally conductive material by stirring. Among them, adhesive uses polyacrylic acid adhesive.

[0084] The slurry containing the adsorption material and the heat conductive material obtains...

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Abstract

The invention provides a sound-absorbing material, which comprises an adsorption material and a heat conduction material, the heat conduction material is uniformly dispersed in the sound-absorbing material, the heat conduction material comprises a carbon fiber material, and the weight ratio of the carbon fiber material in the sound-absorbing material is 0.05-10%. The invention also provides a preparation method of the sound-absorbing material and a loudspeaker using the sound-absorbing material. Compared with the prior art, the sound absorbing material provided by the invention has higher thermal conductivity, and can effectively conduct out heat generated when the loudspeaker works after being added into the rear cavity of the loudspeaker, thereby improving the heat dissipation performance of the loudspeaker.

Description

[Technical field] [0001] The present invention relates to the technical field radiating speaker, and particularly to a method for preparing the sound absorbing material and the sound absorbing material speaker applications. 【Background technique】 [0002] Electro-acoustic transducer device is widely used in mobile phones, computers, TVs, cars and other products. As a speaker electroacoustic transducer device, which when energized, the electric energy can be converted into mechanical energy of vibration of the diaphragm to radiate outward utterance; Meanwhile, there is a certain resistance of the speaker voice coil, the voice coil when energized will work heating heat, and the greater the resistance of the voice coil or a long time would cause the work coil to produce a high temperature rise, adversely affect adhesive bonding between the high temperature used in the voice coil and the diaphragm will, thereby reducing the speaker life. In addition, with the miniaturization of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/165H04R1/28
CPCG10K11/165H04R1/2811H04R2201/02C09K5/14H04R9/022H04R2499/11G10K11/162H04R1/025H04R1/288
Inventor 王和志
Owner AAC MICROTECH CHANGZHOU
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