Vibration diaphragm and preparation method thereof

A technology of thin film and mixture, which is applied in the field of diaphragm and its preparation, can solve the problems of easy fracture of graphene, shedding of high and low frequency performance, and not good enough, so as to achieve the effect of not easy to break, improve adhesion, and improve stability

Active Publication Date: 2016-11-23
CHANGZHOU AMT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vibrating membrane and its Preparation

Method used

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  • Vibration diaphragm and preparation method thereof
  • Vibration diaphragm and preparation method thereof
  • Vibration diaphragm and preparation method thereof

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preparation example Construction

[0034] The present invention provides a kind of preparation method of diaphragm, and this preparation method comprises the following steps:

[0035] S1: Provide a film, glue, graphite powder, and graphene.

[0036] In the step S1, the film provided is made of any one of polyetherimide, polyethylene terephthalate, polyether ether ketone, polyphenylene sulfide, and polyurethane formed film. Polyethylene terephthalate (PET) is preferred.

[0037] The glue is any one of polyurethane, vinyl fluoride, polyacrylate emulsion, vinyl acetate, and ethylene-vinyl acetate, preferably polyurethane.

[0038] S2: Uniformly mixing graphite powder and graphene to form a first mixture, and mixing the first mixture into glue and stirring uniformly to form a second mixture. It can be understood that graphite powder, graphene and glue can be mixed in different proportions. In the present invention, as long as graphite powder and graphene can be completely dispersed in glue, the proportioning is ...

Embodiment 1

[0044] A. Mix graphite powder, graphene and glue, take 1g of graphite powder, 5g of graphene, and 9994g of glue, mix 1g of graphite powder and 5g of graphene evenly, and mix the powder mixed with graphite powder and graphene into 9994g of glue and stirring, so that the graphite powder and graphene are evenly distributed in the glue.

[0045] B. After the graphite powder and graphene are evenly distributed in the glue, the mixture formed by graphite powder, graphene and glue is coated on the surface of the film, and the film coated with the mixture of graphite powder, graphene and glue is dried. Let the colloid solidify and adhere to the surface of the film.

Embodiment 2

[0047] A. Graphite powder, graphene and glue are mixed, take graphite powder 1.5g, graphene 7.5g, glue 9991g, mix 1.5g graphite powder and 7.5g graphene evenly respectively, and the powder after mixing graphite powder and graphene Mix in 9991g of glue and stir to make the graphite powder and graphene evenly distributed in the glue.

[0048] B. After the graphite powder and graphene are evenly distributed in the glue, the mixture formed by graphite powder, graphene and glue is coated on the surface of the film, and the film coated with the mixture of graphite powder, graphene and glue is dried. Let the colloid solidify and adhere to the surface of the film.

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Abstract

The invention relates to vibration diaphragm and a preparation method thereof. The vibration diaphragm comprises a base layer which is thin film made of any one material of polyetherimide, polyethylene glycol terephthalate, polyetheretherketone, polyphenylene sulfide and polyurethane; and a strengthened layer which is formed by drying and curing a mixture of graphene, graphite powder and glue, wherein the weight ratio of the graphene, graphite powder and glue in the strengthened layer is (1-2):(5-10):(9994-9988), and the strengthened layer is adhered on the surface of the base layer. The preparation method comprises the steps of providing the thin film, glue, graphite powder and graphene, evenly mixing the graphite powder and the graphene to form a first mixture, mixing the first mixture in the glue, evenly mixing to form a second mixture; and evenly coating the second mixture on the surface of the thin film and carrying out drying, thereby curing the second mixture on the surface of the thin film to obtain the final vibration diaphragm. According to the vibration diaphragm and the preparation method, the adhesion of the vibration diaphragm is high, the resonant frequency f <0> is reduced, the high frequency sound pressure is increased, and the high and low frequency characteristics are completed.

Description

technical field [0001] The present invention relates to the technical field of acoustic diaphragms, and more specifically, to a diaphragm and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, people have higher and higher requirements for the quality of electronic products, such as earphones, audio products and other products, such as miniaturization, thinning, high sound quality requirements, etc., and these effects Depending on the core component of the acoustic device, the core component of the acoustic device is its diaphragm. [0003] In the existing related technologies, in order to obtain a high-quality diaphragm, it is usually achieved by changing the material of the diaphragm. Common diaphragm materials include paper cone, plastic, metal, etc. Generally, the sound quality of paper cone diaphragm is smooth and natural, crisp and clear, but it is easily affected by the environment and its performance is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/00H04R31/00C08J7/04C09D7/12C09D175/04C08L67/02
CPCH04R7/00H04R31/003C09D175/04C08K3/04C09D7/40C08J2367/02C08J2475/04C08K2201/014H04R2307/025C08J7/0427
Inventor 何朝阳易鹏飞孟献振
Owner CHANGZHOU AMT
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