Title:
AMORPHOUS ACTIVATED CARBON PARTICLES AND SOUND-ABSORPTION PARTICLES AND SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/108256
Kind Code:
A1
Abstract:
Disclosed are amorphous activated carbon particles and sound-absorption particles and a sound production device. The amorphous activated carbon particles comprise three elements: carbon, hydrogen and oxygen, wherein the mass proportion of the carbon is greater than or equal to 60 wt%. The amorphous activated carbon particles contain a turbostratic structure formed by random stacking of a two-dimensional graphite layer structure and/or three-dimensional graphite microcrystalline molecular fragments, and have a loose pore channel structure. The pore channel structure comprises nano-scale micropores and mesopores, wherein the micropores have a pore diameter in the range of 0.5-2 nanometers, and the mesopores have a pore diameter in the range of 2-20 nanometers, and the amorphous carbon particles have an accumulated pore volume in the range of 0.6-5 cm3/g. The activated carbon sound-absorption particles can be used for reducing the resonant frequency of the sound production device.
Inventors:
HUI BING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
ZHANG CHENGFEI (CN)
LIU CHUNFA (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
ZHANG CHENGFEI (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2019/115988
Publication Date:
June 04, 2020
Filing Date:
November 06, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02; H04R9/06
Domestic Patent References:
| WO2005068537A1 | 2005-07-28 |
Foreign References:
| CN105516880A | 2016-04-20 | |||
| CN109448688A | 2019-03-08 | |||
| CN109511056A | 2019-03-22 | |||
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| CN109511058A | 2019-03-22 | |||
| CN109640237A | 2019-04-16 | |||
| CN105237033A | 2016-01-13 | |||
| CN203859791U | 2014-10-01 | |||
| CN105101036A | 2015-11-25 | |||
| CN105195061A | 2015-12-30 |
Other References:
HUANG, ZHENXING: "Non-official translation: Basic Technology of Activated Carbon", 30 June 2006 (2006-06-30), DOI: 20200121140549Y
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