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Expandable acoustic reinforcement and manufacturing method and application thereof

A reinforcement and acoustic technology, applied in applications, other household appliances, ceramic products, etc., can solve the problems of inability to realize large-scale industrial production, poor acoustic performance uniformity of speakers, and inability to mass industrial production, etc., to improve heat dissipation efficiency , Increased pore volume, improved acoustic performance

Pending Publication Date: 2022-08-09
SSI NEW MATERIAL (ZHENJIANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical solution has the following disadvantages: the existing technology only simply mixes the acoustic enhancement material particles with the expandable microsphere material, and in actual mass production applications, it is often easy to appear in a single microspeaker after the filling is completed. The ratio of the filled expandable microsphere material to the acoustic enhancement material particles is not consistent with the target ratio when mixing in large batches, resulting in poor uniformity of acoustic performance of speakers in the same batch, and it is impossible to truly realize reliable mass industrial production
However, this technical solution still has the following disadvantages: in order to achieve effective collision buffering, the volume of the acoustic adjustment material that can be filled in the same fillable space is significantly reduced, and in order to achieve effective bonding, the acoustic adjustment material particles need to lose a certain amount. Surface area, which reduces the number of passages through which air can enter the acoustic conditioning material particles, both of which result in lower acoustic performance of speakers equipped with this piece compared to speakers equipped with traditional acoustic conditioning materials; and the size of traditional acoustic conditioning material particles is on the micron scale , this technical solution is also unable to achieve reliable mass industrial production

Method used

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  • Expandable acoustic reinforcement and manufacturing method and application thereof
  • Expandable acoustic reinforcement and manufacturing method and application thereof
  • Expandable acoustic reinforcement and manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This embodiment provides an expandable acoustic enhancement particle, wherein the particle is prepared by a manufacturing method comprising the following steps:

[0085] 100g of zeolite molecular sieve powder, 6g of polyacrylate binder (the amount of the binder is based on the amount of the solid component in the binder), 0.5g of acrylic expandable -10μm) and an appropriate amount of water to make a uniform slurry;

[0086] The swellable acoustic enhancement particles are prepared after spray-drying the slurry, and the particle diameter is between 200-400 μm.

[0087] Image 6 Scanning electron micrograph of the cross section of the expandable acoustic enhancement particles prepared in Example 1. Image 6 The continuous structure is formed by the bonding of zeolite molecular sieve powder, and the spherical structure is acrylic expandable microspheres. The pores between the continuous structures are naturally formed pores during the preparation process, and the pores ...

Embodiment 2

[0089] This embodiment provides an expandable acoustic enhancement particle, wherein the particle is prepared by a manufacturing method comprising the following steps:

[0090] 100 g of metal organic framework porous material powder, 10 g of polystyrene acrylate binder (the amount of the binder is based on the amount of the solid component in the binder), 10 g of acrylate-based expandable microspheres ( The diameter is between 5-10 μm) and an appropriate amount of ethanol to form a uniform slurry;

[0091] The swellable acoustic enhancement particles are prepared by stirring and granulating the slurry, and the particle diameter is between 400-600 μm.

Embodiment 3

[0093] This embodiment provides an expandable acoustic enhancement particle, wherein the particle is prepared by a manufacturing method comprising the following steps:

[0094] 100g of zeolite molecular sieve, 9g of expandable phenolic resin binder (the consumption of the binder is based on the consumption of the solid component in the binder) and an appropriate amount of water are made into a uniform slurry;

[0095] The swellable acoustic enhancement particles are prepared after spray-drying the slurry, and the particle diameter is between 600-900 μm.

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Abstract

The invention provides an expandable acoustic reinforcement and a manufacturing method and application thereof, and when one or more expansion triggering conditions are applied, the apparent volume of the expandable acoustic reinforcement is increased, and the internal pore volume of the expandable acoustic reinforcement is increased. The expandable acoustic enhancement piece is applied to the loudspeaker, and expansion triggering processing is performed on the expandable acoustic enhancement piece, so that the apparent volume of the expandable acoustic enhancement piece is increased, the internal pore volume is increased, and the acoustic performance of the loudspeaker assembled with the expandable acoustic enhancement piece is improved; meanwhile, extrusion is formed between the expandable acoustic enhancement pieces and between the expandable acoustic enhancement pieces and the cavity wall of the specific space of the loudspeaker, so that the expandable acoustic enhancement pieces are fixed, noise in the use process of the loudspeaker is eliminated, the acoustic enhancement pieces are prevented from being collided, broken and falling powder, and the service life of the loudspeaker is prolonged. And the service life of the acoustic enhancement piece is prolonged.

Description

technical field [0001] The invention relates to an expandable acoustic reinforcing member, a manufacturing method and application thereof, and belongs to the technical field of electro-acoustic products. Background technique [0002] European patent EP2424270 discloses a technology of virtually increasing the rear cavity of a speaker by using zeolite materials. By arranging acoustic enhancement materials such as zeolite, activated carbon and other acoustic enhancement materials with gas adsorption and desorption capabilities in the speaker cavity, the performance of the speaker is improved in the cavity. When the volume remains the same, it achieves the same performance as when the cavity volume is expanded by several times the original volume. [0003] In recent years, this technology has been widely used in speakers of smartphones, tablet computers, thin and light notebook computers, etc., enabling it to achieve better sound performance in the case of limited volume and sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00H04R1/02C04B26/06C04B26/12C04B38/08C04B111/40
CPCH04R31/00H04R1/02C04B26/06C04B38/08C04B26/122C04B2111/40H04R2201/029C04B14/047C04B16/08H04R1/2811H04R2499/11C04B20/002C04B26/16C04B14/022C04B14/041C04B16/00C04B26/045C04B38/0054C04B38/065C04B2103/0078C04B2111/52H04R1/025
Inventor 张磊赵峻杰刘仁坤张震旦郭明波马院红
Owner SSI NEW MATERIAL (ZHENJIANG) CO LTD