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AssigneeSSI New Material (Zhenjiang) Co., Ltd.
InventorsJunran LU, Lei ZHANG, Mingbo GUO, Yuanhong MA
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The present disclosure provides a porous acoustic volume increasing material and a preparation method therefor, a loudspeaker, and an electronic device. The porous acoustic volume increasing material comprises covalent organic frameworks (COFs), wherein the COFs have a thermal decomposition temperature Td greater than or equal to 300° C., a density greater than or equal to 0.20 g/cc, and a particle specific surface area greater than or equal to 200 m2/g. Acoustic impedance and frequency response analysis tests prove that the porous acoustic volume increasing material comprising the COFs can show excellent low-frequency improvement performance. In particular, the acoustic performance of the porous acoustic volume increasing material comprising the COFs having the specific Td (i.e., Td≥300° C.) is more excellent.
A porous acoustic volume enhancing material, wherein the porous acoustic volume enhancing material comprises a covalent organic frameworks material, which has a thermal decomposition temperature Td greater than or equal to 300° C., a density greater than or equal to 0.20 g/cc, and a particle specific surface area greater than or equal to 200 m2/g.
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A loudspeaker, comprising one or more acoustic sensors and one or more housings, which are combined to form a rear cavity of the loudspeaker, wherein the rear cavity of the loudspeaker is provided with a porous acoustic volume enhancing material comprising a covalent organic frameworks material having a thermal decomposition temperature Td greater than or equal to 300° C., a density greater than or equal to 0.20 g/cc, and a particle specific surface area greater than or equal to 200 m2/g.
An electronic device, comprising a loudspeaker provided with the porous acoustic volume enhancing material in the rear cavity thereof, wherein the porous acoustic volume enhancing material comprises a covalent organic frameworks material having a thermal decomposition temperature Td greater than or equal to 300° C., a density greater than or equal to 0.20 g/cc, and a particle specific surface area greater than or equal to 200 m2/g.
Dependencies are inferred from the claim text.