公开(公告)号：US20230167282A1

公开(公告)日：2023-06-01

申请号：US17995121

申请日：2021-08-24

Applicant: GOERTEK INC.

Inventor： Fuzhen YAN ,  Weichao WANG ,  Chun LI

IPC: C08L9/06 ,  H04R7/02 ,  H04R31/00 ,  C08K3/04 ,  C08K5/17

CPC classification number: C08L9/06 ,  H04R7/02 ,  H04R31/003 ,  C08K3/04 ,  C08K5/17 ,  C08L2312/02 ,  C08K2003/2296

Abstract: Disclosed is a diaphragm and a sound generating device. The raw material of the diaphragm comprises a liquid diene-based rubber and a vulcanizing agent, and the liquid diene-based rubber comprises a liquid butadiene-based rubber or a liquid isoprene-based rubber. The diaphragm is prepared by injecting the raw material into a diaphragm forming mold and then performing a cross-linking reaction. The diaphragm has an elongation at break of more than 200%, therefore the reliability of the diaphragm is high, the diaphragm has a damping of more than 0.07, and the has higher damping in the range of the operating temperature and frequency, therefore the loudspeaker using this diaphragm may obtain lower THD, higher listening yield, better sound quality, and swing during vibration not easily occurs, the listening stability is good, and the diaphragm can also ensure that the defects such as diaphragm folding and diaphragm damage not easily occurs after low temperature reliability.