Sound absorbing material preparation method, sound absorbing material and loudspeaker

A technology for sound-absorbing materials and powder materials, which is applied in the fields of sound-absorbing materials, speakers, and sound-absorbing materials, can solve the complex and difficult synthesis process and post-processing process, the requirements for the types and grades of synthetic raw materials are high, and the output rate is high. Low and other problems, to achieve the effect of reducing the type and grade requirements of raw materials, good acoustic effect, good absorption capacity

Active Publication Date: 2016-04-20
GOERTEK INC
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Problems solved by technology

[0003] In order to obtain good absorption capacity and slow aging behavior of non-foamed sound-absorbing materials per unit volume, non-foamed sound-absorbing materials currently used in the speaker field are limited to zeolite materials with a silicon-aluminum mass ratio of at least 2

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  • Sound absorbing material preparation method, sound absorbing material and loudspeaker
  • Sound absorbing material preparation method, sound absorbing material and loudspeaker

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[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

[0031] The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

[0032] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of th...

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Abstract

The invention discloses a sound absorbing material preparation method, a sound absorbing material and a loudspeaker. The method comprises the following steps of preparing non-foamed material slurry, and mixing uniformly; performing reaction on the non-foamed material to form non-foamed sound absorbing material powder with the FER or MFI structure; performing heteroatom replacement on the non-foamed sound absorbing material powder; adding binder into the modified non-foamed sound absorbing material powder; shaping, drying and calcining the non-foamed sound absorbing material, and thereby obtaining the non-foamed sound absorbing material with a set grain size, wherein the mass ratio of silicon and aluminum in the non-foamed sound absorbing material is less than 200. The sound absorbing material is prepared by the non-foamed material, and the mass ratio of silicon and aluminum in the prepared non-foamed sound absorbing material powder is less than 200. The rear vocal cavity of the loudspeaker is filled with the sound absorbing material provided by the invention. The method is low in requirements on material category and grade and simple in technology; and the material prepared by the method is good in absorbing ability and slow in aging. The loudspeaker has good acoustic effect.

Description

technical field [0001] The invention relates to the technical field of material preparation, and more specifically, to a method for preparing a sound-absorbing material, a sound-absorbing material and a loudspeaker. Background technique [0002] As an energy converter that converts electrical signals into sound signals, the speaker module is an indispensable part of electro-acoustic products. The speaker module is usually composed of a shell and a speaker unit, and the speaker unit divides the inner cavity of the entire module shell into two cavities, the front sound cavity and the rear sound cavity. In order to improve the acoustic performance of the speaker module (such as reducing the resonant frequency F of the module 0 , expand the bandwidth), usually add sound-absorbing parts in the rear acoustic cavity, and the sound-absorbing parts will absorb part of the sound energy, which is equivalent to expanding the volume of the rear cavity, so as to reduce the module F 0 Ef...

Claims

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Application Information

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IPC IPC(8): H04R31/00H04R9/06
CPCH04R9/06H04R31/00
Inventor 曹晓东
Owner GOERTEK INC
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