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Sound absorption zeolite particle and synthesis and preparation method thereof

A zeolite and particle technology, which is applied to the field of zeolite sound-absorbing particles and their synthesis and preparation, can solve the problems of reducing the mass transfer efficiency and sound-absorbing effect of zeolite sound-absorbing materials, and achieve the advantages of eliminating polarity defects, improving particle strength and improving mass transfer efficiency. Effect

Active Publication Date: 2016-02-24
GOERTEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen from the above that the traditional granulation method greatly reduces the mass transfer efficiency and sound-absorbing effect of zeolite-based sound-absorbing materials

Method used

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  • Sound absorption zeolite particle and synthesis and preparation method thereof
  • Sound absorption zeolite particle and synthesis and preparation method thereof

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Embodiment 1

[0027] figure 1 The flow chart of the synthesis and preparation method of zeolite sound-absorbing particles provided in this example, figure 2 The process flow chart for the synthesis and preparation of zeolite sound-absorbing particles provided in this example, it should be understood that this example figure 2 The labels 10-14 in do not limit the execution order.

[0028] like figure 1 and figure 2 Collectively, the method includes:

[0029] S100, add silicon source, aluminum source, template agent, additives and solvents into the synthesis reaction kettle, and control the growth of artificially synthesized zeolite crystals under specific synthesis process conditions such as high temperature and high pressure.

[0030] Among them, the silicon source, aluminum source and template are all preferably chemically pure grade raw materials to ensure the purity of the prepared materials, minimize the defects in the microscopic crystal structure of the zeolite material, and ma...

Embodiment 2

[0044] Based on the synthesis and preparation method of the zeolite sound-absorbing particles provided in the first embodiment, the embodiment of the present invention also provides a zeolite sound-absorbing particle.

[0045] The zeolite sound-absorbing particles are synthesized from silicon sources, aluminum sources, templates, additives and solvents, and have a specific surface area of ​​220-750m 2 / g, the pore volume is 0.15-1.9ml / g, the macropore diameter is 0.1-50μm, the density is 0.3-0.9g / ml, and the particle size is 0.10-1.0mm.

[0046] The silicon source, the aluminum source and the template agent in this embodiment are all made of chemically pure grade raw materials, and the purity of the template agent is higher than 90%, and the addition ratio is 1% to 35%.

[0047] In summary, the present invention discloses a zeolite sound-absorbing particle and its synthesis and preparation method. By adding the raw materials required for the preparation of zeolite particles in...

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Abstract

The invention discloses a sound absorption zeolite particle and a synthesis and preparation method thereof. The method comprises the following steps: adding a silicon source, an aluminum source, a template, an additive and a solvent into a synthesis reaction kettle, and controlling artificially synthesized zeolite crystal growth under high temperature and high pressure conditions for a predetermined synthesis time to reach a predetermined particle size range; carrying out solid-liquid separation by using a filter press and / or a centrifuge to obtain molded synthesized zeolite particles; and sequentially carrying out high temperature roasting, reinforcing balling and particle surface post-treatment on the molded synthesized zeolite particles, and screening to obtain the satisfactory sound absorption zeolite particle. The method adopting the above technical scheme does not need secondary molding, so influences of a bonding agent on the zeolite particles are avoided, thereby the sound absorption zeolite particle has good mass transfer and sound absorption effects when being applied in loudspeaker products; and the required zeolite particle is obtained through the high temperature roasting, reinforcing balling and particle surface post-treatment of the molded synthesized zeolite particles.

Description

technical field [0001] The invention relates to a zeolite sound-absorbing particle and a synthesis preparation method thereof. Background technique [0002] In recent years, as wearable electronic products become thinner and thinner, traditional sound-absorbing materials can no longer meet the needs of micro-speaker acoustic performance debugging and calibration, and new sound-absorbing materials are constantly being developed and tried. After verification, it is found that placing the porous sound-absorbing material in the rear cavity of the speaker device can effectively improve the acoustic performance of the speaker device. [0003] At present, new sound-absorbing materials with better application effects include natural zeolite, activated carbon, white carbon black, zeolite powder with a silicon-aluminum ratio of more than 200, etc., or a mixture of the above materials. In loudspeaker applications, the above powdered sound-absorbing materials need to be prepared into g...

Claims

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Application Information

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IPC IPC(8): C01B39/02
CPCC01B39/02C01P2004/60C01P2006/12C01P2006/14C01P2006/16C01P2006/90
Inventor 曹晓东
Owner GOERTEK INC
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