Title:
ACTIVATED CARBON ACOUSTIC MATERIAL AND SOUND-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/108255
Kind Code:
A9
Abstract:
The present application discloses an activated carbon acoustic material and a sound-emitting device. The activated carbon material is mainly composed of three elements, i.e. carbon, hydrogen, and oxygen, the mass percentage of carbon being greater than or equal to 60 wt%, and the mass ratio of carbon to hydrogen in the activated carbon acoustic material being greater than or equal to 11; the activated carbon acoustic material comprises a two-dimensional graphite layer and/or three-dimensional graphite crystallite; the interior of the activated carbon acoustic material has a loose porous structure, the porous structure comprising nano-scale micropores and mesopores, the diameter of the mesopores being larger than the diameter of the micropores. One technical effect of the present application is that the activated carbon acoustic material can be used for reducing the resonance frequency of the sound-emitting 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/CN2019/115987
Publication Date:
August 20, 2020
Filing Date:
November 06, 2019
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R29/00
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