Title:
AMORPHOUS ACTIVATED CARBON PARTICLES AND SOUND-ABSORBING PARTICLES, AND SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/108253
Kind Code:
A1
Abstract:
Disclosed are amorphous activated carbon particles and sound-absorbing particles, and a sound-producing device. The amorphous activated carbon particles comprise three elements, namely carbon, hydrogen, and oxygen. The mass ratio of carbon therein is greater than or equal to 60 wt%. The amorphous activated carbon particles comprise a turbostratic structure formed by means of irregular packing of molecular fragments of a two-dimensional graphite layer structure and/or three-dimensional graphite microcrystals. The amorphous activated carbon particles have a loose pore structure therein. The pore structure comprises nanoscale micropores and mesopores. A particle size range of the amorphous carbon particles is 0.1 to 100 micrometers. The packing density of the amorphous carbon particles is 0.05 to 0.8 g/cm3. A technical effect of the invention is that the activated sound-absorbing carbon particles can reduce the resonance frequency of a sound-producing 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/CN2019/115977
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 | |||
| CN101416528A | 2009-04-22 | |||
| US20110048844A1 | 2011-03-03 |
Other References:
HUANG, ZHENXING: "Non-official translation: Basic Technology of Activated Carbon", NON-OFFICIAL TRANSLATION: EXPERIMENTAL RESEARCH METHODS OF VARIOUS PROPERTIES OF ACTIVATED CARBON, 31 December 2006 (2006-12-31), DOI: 20191224213854Y
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