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Preparation method of composite vibrating diaphragm

A technology of mixing slurry and fully mixing, which is applied in the direction of ceramic material diaphragm, sound-generating equipment, household components, etc. It can solve the problems of affecting distortion and hearing, splitting vibration, and insufficient rigidity, etc., and achieves excellent performance, low production cost, high intensity effect

Inactive Publication Date: 2014-07-16
AAC MICROTECH CHANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the diaphragm of this structure is prone to split vibration due to insufficient rigidity at high frequencies, which affects distortion and hearing
In addition, in practical applications, in order to improve the strength of the diaphragm without affecting the sound quality, the common practice in the industry is to increase the thickness of the local area on the diaphragm. However, the diaphragm made of a single material is pressed into the rear diaphragm The thickness is the same everywhere, and the above requirements cannot be met

Method used

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  • Preparation method of composite vibrating diaphragm

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Embodiment Construction

[0020] The composite diaphragm of the present invention will be described in detail below. refer to figure 1 as shown,

[0021] A preparation method of a composite diaphragm, which comprises the following steps:

[0022] S1: providing a powdered graphene;

[0023] S2: Provide a polymer raw material;

[0024] S3: heating the polymer raw material to a molten state;

[0025] S4: Incorporate the graphene into the polymer raw material in the molten state and fully mix to obtain a mixed slurry;

[0026] S5: The above mixture is pressed into a composite diaphragm by a tape casting method.

[0027] The polymer raw material provided by S2 is solid. After the polymer raw material is heated to a molten state, the polymer raw material in the molten state is mixed with the graphene and fully mixed to obtain a mixed slurry. The polymer raw material is preferably granular or powdery. In this way, a larger contact area can be obtained and melting can be performed better. Preferably, ...

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Abstract

The invention discloses a preparation method of a composite vibrating diaphragm. The preparation method comprises the following steps that power-form graphene is provided; a macromolecular raw material is provided; the macromolecular raw material is heated to be in a fused state; the graphene is doped into the macromolecular raw material in the fused state to be fully mixed to obtain mixed slurry; the mixed slurry is pressed through the tape casting forming method to form the composite vibrating diaphragm. The preparation method of the composite vibrating diaphragm is simple and the composite vibrating diaphragm prepared through the method has advantages of being high in strength, good in performance and the like.

Description

【Technical field】 [0001] The invention relates to a preparation method of a composite diaphragm. 【Background technique】 [0002] With the continuous improvement of market demand, mobile phones are gradually becoming thinner, and the sound quality is required to be better and better, which requires the acoustic devices in mobile phones to be small, thin, and high-quality. The diaphragm is the core component of acoustic devices such as loudspeakers, and the requirements for its acoustic performance have also increased accordingly. [0003] The vibrating membrane in the related art is formed by pressing a single cloth membrane or other thermoformable materials. However, the diaphragm with this structure is prone to split vibration due to insufficient rigidity at high frequencies, which affects distortion and sense of hearing. In addition, in practical applications, in order to improve the strength of the diaphragm without affecting the sound quality, the common practice in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00
CPCG10K9/20H04R31/003H04R2307/023H04R2499/11B29C43/003B29K2035/00B29K2507/04B29L2031/38
Inventor 朱秉科
Owner AAC MICROTECH CHANGZHOU