Voice diaphragm material of loudspeaker and preparation method and application thereof

Abstract

The invention provides a voice diaphragm material of a loudspeaker and a preparation method and application thereof. The voice diaphragm material comprises a base material, and a first damp-proof layer and a second damp-proof layer which are respectively arranged on two surfaces of the base material, materials of the first moisture-proof layer and the second moisture-proof layer each independentlycomprise a composition of an acrylic polymer, a styrene-butadiene copolymer and a fluororesin. According to the sound film material, through mutual cooperation of the three components of the moisture-proof layer, a compact coating is formed on the surface of the sound film material, and the damping performance is improved while the waterproof and moisture-proof performance is provided. The staticcontact angle of the voice diaphragm material is 93.3-110 degrees; the sound film material has good water repellency, and a sound film assembly containing the sound film material has excellent cold and hot impact resistance, water resistance and moisture resistance, maintains good acoustic stability in a humid and hot environment, and can fully meet the use stability requirements of a loudspeakerin severe environments such as humid and hot environments and cold and hot alternation environments.

Description

technical field [0001] The invention belongs to the technical field of loudspeakers, and in particular relates to a sound film material of a loudspeaker and a preparation method and application thereof. Background technique [0002] The loudspeaker is an electro-acoustic transducer, which is mainly divided into three parts according to the function: the vibration part, the magnetic circuit part and the suspension part. The sound film is the key part of the vibration part, also known as the diaphragm. The sound film is mainly bonded to the voice coil, and the air in the cavity is compressed under the drive of the voice coil to produce sound. Therefore, the sound film can directly affect the frequency response and frequency response of the speaker. Vocal nature. The material properties of the sound film mainly affect the inherent sound color of the speaker. The material properties include the characteristics of the material itself, the mixing ratio, additives, preparation tec...

AI Technical Summary

Problems solved by technology

However, the waterproof and moisture-proof performance of the treble sound film is poor, and it cannot adapt to the application in high humidity environment

[0008] Among the existing sound film materials, the treble sound film usually uses silk, tetoron or textile cotton as the base material. However, the above-mentioned materials are hydrophilic and will absorb water and moisture in an environment with high humidity. On the one hand, it reduces Its mechanical properties, on the one hand, will also affect the acoustic characteristics of the speaker, so it is necessary to improve the waterproof and moisture-proof properties of the sound film material

However, the sound film treated with moisture-proof treatment in the prior art cannot achieve the ideal waterproof and moisture-proof performance, and will also affect the acoustic properties of the sound film

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