Title:
AMORPHOUS ACTIVATED CARBON PARTICLES, SOUND ABSORPTION PARTICLES, AND SOUND-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/108249
Kind Code:
A1
Abstract:
Disclosed by the present invention are amorphous activated carbon particles, sound absorption particles, and a sound-emitting device. The amorphous activated carbon particles comprise carbon, hydrogen and oxygen, wherein the mass ratio of carbon is greater than or equal to 60 wt%; the amorphous activated carbon particles contain a turbostratic structure formed by the irregular stacking of molecular fragments of a two-dimensional graphite layer structure and/or three-dimensional graphite microcrystals, and a loose pore channel structure is present in the amorphous activated carbon particles; the pore channel structure comprises nano micropores and mesopores, the aperture of the micropores being with a range of 0.5-2 nm, the aperture of the mesopores being within a range of 2-20 nm, and the ratio of the cumulative pore volume of the micropores to the cumulative pore volume of the mesopores being within a range of 0.05-20. One technical effect of the present invention lies in the activated carbon sound absorption particles being capable of being used to reduce the resonant frequency of a sound-emitting device.
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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/CN2019/115939
Publication Date:
June 04, 2020
Filing Date:
November 06, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R31/00
Foreign References:
| CN105516880A | 2016-04-20 | |||
| US20110048844A1 | 2011-03-03 | |||
| CN102161671A | 2011-08-24 |
Other References:
HUANG, ZHENXING: "Non-official translation: Experimental Research Methods of Various Properties of Activated Carbon", NON-OFFICIAL TRANSLATION: BASIC TECHNOLOGY OF ACTIVATED CARBON, 31 December 2006 (2006-12-31), DOI: 20191225120626Y
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