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Preparation method of silicon carbon vibration diaphragm, carbon vibration diaphragm and acoustical unit with vibration diaphragm

A silicone diaphragm and silicon carbon technology, applied in electrical components, sensors, etc., can solve problems such as poor audio performance, and achieve the effects of small impact, good elasticity and rigidity, and convenient molding

Active Publication Date: 2018-09-25
SHENZHEN MOMA CLEVER CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of an embodiment of the present invention is to provide a method for preparing a silicon carbon diaphragm, a silicon carbon diaphragm and an acoustic unit equipped with the diaphragm, aiming at solving the problem of poor audio performance of the existing aluminum diaphragm technical problem

Method used

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  • Preparation method of silicon carbon vibration diaphragm, carbon vibration diaphragm and acoustical unit with vibration diaphragm
  • Preparation method of silicon carbon vibration diaphragm, carbon vibration diaphragm and acoustical unit with vibration diaphragm
  • Preparation method of silicon carbon vibration diaphragm, carbon vibration diaphragm and acoustical unit with vibration diaphragm

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preparation example Construction

[0030] Such as Figure 4 As shown, the preparation method of the silicon carbon diaphragm comprises the following steps:

[0031] S1: Preparation of carbonaceous diaphragm;

[0032] The preparation of the carbonaceous diaphragm specifically includes: providing a precursor resin and a thin film.

[0033] The precursor resin has a predetermined concentration and viscosity, and the precursor resin is one or more combinations of phenolic resin, polyurethane resin, furan resin, silicone resin, unsaturated polyester, basic phenolic resin, and epoxy resin things.

[0034] The precursor resin is a silicon-containing resin complex, and the resin complex is one of silicone resin, silica sol, silica gel, silica gel, silane, and silicon micropowder, wherein the silicon content is 0.01%-100% , the preferred silicon content in this embodiment is 10-50%.

[0035] The film is one of polyethylene, polycarbonate, polyethylene terephthalate, polystyrene, polyetheretherketone, polyimide, liqu...

Embodiment 1

[0061] Mix the silane and the polyurethane resin evenly to obtain the precursor resin, especially, control the silicon content to 14%. The polyurethane precursor resin is evenly coated on the polyethylene terephthalate film containing the release agent through a series of cast roll film equipment, and the thickness of the polyurethane precursor resin on the film is controlled to be 0.05mm . Then the control film loaded with the polyurethane precursor resin passes through a metal box containing hot air, in particular, the temperature of the hot air is controlled to be 75° C., and the film advance speed is 5 m / min. After a predetermined temperature treatment, the coated precursor resin is covered with a polyethylene terephthalate film containing a release agent. It was set at 150° C. under a pressure of 21 MPa to obtain a precursor resin film. The precursor resin film is mechanically cut into films of predetermined shape.

[0062] The aforementioned diaphragm cut into a prede...

Embodiment 2

[0068] The precursor resin is obtained by uniformly mixing the silica gel and the phenolic resin in a predetermined ratio, especially controlling the silicon content to 11%. The phenolic resin is uniformly coated on the polyethylene terephthalate film containing a release agent through a device containing a series of casting rolls, and the thickness of the polyurethane precursor resin on the film is controlled to be 0.08mm. Then the control film loaded with the phenolic resin precursor resin passes through a metal box containing hot air, in particular, the temperature of the hot air is controlled to be 90° C., and the film advance speed is 7 m / min. After a predetermined temperature treatment, the coated precursor resin is covered with a polyethylene terephthalate film containing a release agent. It was set at 157° C. under a pressure of 15.5 MPa to obtain a precursor resin film. The precursor resin film is mechanically cut into films of predetermined shape.

[0069] The afor...

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Abstract

The invention relates to the technical field of acoustical products, and in particular relates to a silicon carbon vibration diaphragm, a preparation method of the silicon carbon vibration diaphragm,and an acoustical unit with the vibration diaphragm. The preparation method comprises the steps of preparing a carbon vibration diaphragm; providing the prepared silicon carbon vibration diaphragm; tightly connecting the carbon vibration diaphragm with a silica gel vibration diaphragm in a secondary forming mold. Through preparing the silicon carbon vibration diaphragm, the prepared silicon carbonvibration diaphragm has the advantages of light weight, wide sound range, good elasticity and rigidity, resistance to high temperature and fatigue, and small affect of external environment such as moisture; the novel silicon carbon vibration diaphragm is prepared by the way of secondarily forming the silica gel vibration diaphragm and the carbon vibration diaphragm, so that the novel silicon carbon vibration diaphragm can be conveniently installed on the acoustical unit of an electronic loudspeaker, and can also be directly integrally formed with the acoustical unit of the electronic loudspeaker; compared with the traditional technical scheme or the pure carbon vibration diaphragm or the pure silica gel vibration diaphragm, the novel silicon carbon vibration diaphragm has higher sensitivity and differentiation degree, simple technological operation and convenience in forming, and can achieve large-scale preparation.

Description

【Technical field】 [0001] The invention relates to the technical field of electroacoustic products, in particular to a method for preparing a silicon-carbon diaphragm, a silicon-carbon diaphragm and an acoustic unit provided with the diaphragm. 【Background technique】 [0002] As an important component of the speaker, the diaphragm is a component that is sensitive to changes in the electromagnetic field. When an electrical signal passes through the coil, the magnetic field changes, causing the diaphragm to deform under force. Due to the rapid change of the electrical signal, the diaphragm vibrates at a high speed, and then the vibration of the diaphragm is transmitted to the air, thereby generating sound waves. In this process, the acoustic performance of the diaphragm determines the overall performance of the earphone or speaker. There are many types of diaphragms, including paper diaphragms, wooden diaphragms, plastic diaphragms, metal diaphragms, biological diaphragms, etc...

Claims

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Application Information

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IPC IPC(8): H04R31/00
CPCH04R31/003H04R2231/001
Inventor 武毅陈春元孙金永许彩霞
Owner SHENZHEN MOMA CLEVER CHEM TECH CO LTD
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