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

A technology of sound-absorbing material and molecular sieve, which is applied in the directions of loudspeakers, sensors, electrical components, etc., can solve the problems of low stability of speaker performance, occupying micro-holes, and performance degradation of speakers, so as to improve low-frequency acoustic performance and improve performance stability. sex, improve the effect of low frequency effect

Inactive Publication Date: 2018-09-21
AAC TECH NANJING
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Problems solved by technology

[0003] However, the inventors have found that there are at least the following problems in the prior art: ordinary molecular sieves tend to absorb moisture in the air at room temperature and occupy micropores, resulting in a decrease in speaker performance; high

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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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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present invention, many technical details are proposed in order to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in the present invention can also be realized.

[0022] The invention relates to a sound-absorbing material, which includes molecular sieves with MFI structure. The molecular sieve with the MFI structure includes a framework and an extra-framework cation, and the framework includes SiO2 and metal oxide MxOy; the Si / M atomic ratio in the fr...

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Abstract

The embodiment of the invention relates to the technical field of sound absorbing materials and discloses a sound absorbing material. In the invention, the sound absorbing material comprises an MFI structure molecular sieve; the MFI structure molecular sieve comprises a framework and framework external positive ions; the framework comprises SiO2 and metal oxide MxOy; the Si / M atomic ratio in the framework is at least 100, wherein M comprises gallium; the framework external positive ions are at least one of hydrogen ions, alkaline metal ions or alkaline-earth metals. The invention also providesa preparation method of the sound absorbing material and a loudspeaker applying the sound absorbing material. According to the sound absorbing material, the preparation method and the loudspeaker applying the sound absorbing material, the performance of the loudspeaker can be improved, the molecular scene invalidation is reduced, and the performance stability of the loudspeaker is improved.

Description

technical field [0001] Embodiments of the present invention relate to a sound-absorbing material and a speaker box, in particular to a sound-absorbing material for improving the low-frequency performance and performance stability of a speaker, its preparation method and application. Background technique [0002] With the development of science and technology and the improvement of living standards, people have higher and higher requirements for the performance of speakers. Especially, for mobile phone speakers, it is required to provide excellent acoustic performance while keeping the volume as small as possible. The sound quality of the loudspeaker is closely related to the design and manufacturing process, especially the size design of the rear cavity of the loudspeaker. Usually, the smaller the back cavity of the speaker, the worse the acoustic response in the low-frequency band, and the worse the acoustic performance such as sound quality, so it is necessary to try to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06C01B39/06H04R9/02
CPCH04R9/06C01B39/065C01P2004/62C01P2004/64C01P2004/80H04R9/02H04R2400/11
Inventor 唐琨王和志冯宏枢黄国创
Owner AAC TECH NANJING
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