Title:
FOAMING MATERIAL AND PREPARATION METHOD THEREFOR, VIBRATION PLATE, AND LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2022/253136
Kind Code:
A1
Abstract:
The present invention relates to a foaming material and a preparation method therefor, a vibration plate, and a loudspeaker. In the present invention, a cyanate ester, bismaleimide and the like are used as host resins, a chemical foaming agent is added, and a certain amount of hollow glass microspheres can also be added, so that a foaming layer prepared still has very good adhesive performance, and after foaming, the material is low in density, high in modulus, low in water absorption and excellent in heat-resistant performance, and can be used to replace a traditional PMI foaming material; the vibration plate prepared is high in strength, good in high-frequency performance and excellent in reliability.
Inventors:
XIE BAOCUN (CN)
LI MEILING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
LI MEILING (CN)
LING FENGGUANG (CN)
LI CHUN (CN)
Application Number:
PCT/CN2022/095614
Publication Date:
December 08, 2022
Filing Date:
May 27, 2022
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
C08L79/00; C08L63/00; C08L79/08; H04R31/00
Foreign References:
| CN112608596A | 2021-04-06 | |||
| CN105802219A | 2016-07-27 | |||
| CN104629361A | 2015-05-20 | |||
| US8796346B1 | 2014-08-05 | |||
| CN112080111A | 2020-12-15 | |||
| CN113549324A | 2021-10-26 |
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