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Title:
SOUND-ABSORBING PARTICLES, SOUND PRODUCTION DEVICE AND ELECTRONIC EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2021/135875
Kind Code:
A1
Abstract:
Disclosed are sound-absorbing particles (1), a sound production device and electronic equipment. The sound-absorbing particle comprises activated carbon particles and a high molecular polymer adhesive mixed with the activated carbon particles, wherein the activated carbon particles comprise an activated carbon particle inner core (11) and a hydrophobic layer (12) coated on the outer surface of the activated carbon particle inner core; the hydrophobic layer (12) has a hydrophobic rate of greater than 99%; the activated carbon particle inner core (11) comprises three elements, i.e. carbon, hydrogen and oxygen; the activated carbon particle inner core (11) comprises a disordered layer structure formed by random accumulation of molecular fragments of two-dimensional graphite layer structures and/or three-dimensional graphite microcrystals; and the activated carbon particle inner core (11) has a loose pore channel structure. By providing a hydrophobic layer (12) outside the activated carbon particle inner core (11), the moisture entering into the activated carbon particle inner core (11) can be reduced, and the sound-absorbing ability of the sound-absorbing particles (1) is improved. Filling the sound-absorbing particles (1) in a sound production device can be used to reduce the resonant frequency of the sound production device, which improves the sound production performance of the sound production device.

Inventors:
PAN QUANQUAN (CN)
YAO YANGYANG (CN)
MOU YAJING (CN)
LI CHUN (CN)
Application Number:
PCT/CN2020/134875
Publication Date:
July 08, 2021
Filing Date:
December 09, 2020
Export Citation:
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Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06; C01B32/372; C01B32/384; H04R9/02
Foreign References:
CN111147987A2020-05-12
CN111179897A2020-05-19
CN111182419A2020-05-19
CN111163403A2020-05-15
CN111135772A2020-05-12
CN111163395A2020-05-15
CN109660924A2019-04-19
CN109257689A2019-01-22
CN109511058A2019-03-22
CN109511056A2019-03-22
CN109511057A2019-03-22
CN109448688A2019-03-08
CN109640237A2019-04-16
CN106693896A2017-05-24
KR20170010650A2017-02-01
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