▎ 摘　　要

NOVELTY - A diaphragm of sound-producing device comprises layer of fluorosilicone rubber film layer. The net-shaped polymer in fluorosilicone rubber film layer comprises first chain section, second chain section and third chain section. The first chain section is (I). The second chain section is (II). The third chain section is one or more of 8 compounds, preferably (III)-(V). USE - Diaphragm of sound-producing device. ADVANTAGE - The diaphragm has good chemical resistance, and adjusts physicochemical property of fluorosilicon rubber by adjusting ratio of silicon and fluorine-containing alkyl R in net-shaped polymer to realize adjustment of loudspeaker Qms. DETAILED DESCRIPTION - A diaphragm of sound-producing device comprises layer of fluorosilicone rubber film layer. The net-shaped polymer in fluorosilicone rubber film layer comprises first chain section, second chain section and third chain section. The first chain section is of formula (I). The second chain section is of formula (II). The third chain section is one or more of 8 compounds, preferably (III)-(V). (CN113754905A-001.skc) (CN113754905A-002.skc) (CN113754905A-003.skc) R=F-containing alkyl; R2, R3=Me, Et or phenyl; R1=H, Me, Et or phenyl; R4=Me or phenyl; and R5=one or more of 8 compounds, preferably (i)-(iii). (CN113754905A-004.skc) INDEPENDENT CLAIMS are also included for: (1) a method for manufacturing diaphragm of sound-producing device comprising using siloxane polymer containing fluorine-containing alkyl side chain as base polymer, and adding filler, structure control agent and other auxiliary agent by mixing to form fluorosilicone rubber film layer of diaphragm; and (2) a sound-producing device.