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Silica gel vibrating diaphragm adhesive tape and preparation method thereof

A silicone diaphragm and tape technology, applied in adhesives, flat products, film/flake adhesives, etc., can solve problems such as the influence of production rate, the limitation of the use effect of silicone diaphragm, and the difficulty in stabilizing the performance parameters of the production diaphragm. , to achieve the effect of improving production efficiency, improving preparation method and good performance effect

Pending Publication Date: 2020-08-25
安庆泽远化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The thickness of the silica gel diaphragm is related to its effect in acoustic instruments. The thickness of the silica gel diaphragm produced by traditional injection molding is difficult to reach below 50 μm, which limits the use of the silica gel diaphragm. At the same time, the process of preparing the silica gel diaphragm by injection Among them, the performance parameters of the diaphragm produced in the cavity are difficult to stabilize, and the effective production rate is also affected

Method used

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  • Silica gel vibrating diaphragm adhesive tape and preparation method thereof
  • Silica gel vibrating diaphragm adhesive tape and preparation method thereof
  • Silica gel vibrating diaphragm adhesive tape and preparation method thereof

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preparation example Construction

[0032] Such as Figure 1 to Figure 7 Shown, a kind of silica gel diaphragm tape preparation method of the present invention: the method steps are as follows:

[0033] S1. Preparation of silicon material: choose vinyl silicone resin as the main material of silica gel, its viscosity is 10000mPa·s, vinyl mass fraction is 1%-3%, hydrogen-containing vinyl silicone oil, active hydrogen mass fraction is greater than 1%, and viscosity is greater than 15000mPa s, and add inhibitors and tackifiers, and finally add reaction catalysts;

[0034] S2. Mixing into gel: Add the selected raw materials in S1 into the stirred tank, control the temperature in the stirred tank within 280°C, and maintain the pressure in the stirred tank at 1.5-1.8bar, during its operation In the process, the temperature inside the reactor is cyclically changed from 220°C to 280°C, and the temperature is changed at a speed of 2°C / min. After running for 2-3 hours, qualified silica gel for mixing is obtained; the temp...

Embodiment approach

[0040] As an embodiment of the present invention, the rib 42 is provided with a spoiler 44 at a position close to the air outlet 51 of the prism 5, the bottom of the spoiler 44 is provided with a shaft column 441, and the shaft column 441 is vertically rotated and installed on the On the rib 42; the spoiler 44 is affected by blow molding and swings left and right; the blown silicone film is divided into four parts under the action of the rib 42, and the airflow blown from the top of the rib 5 is along four directions Scattered, the airflow blown out from the tuyere 51 on the adjacent two sides of the edge platform 5 interferes with each other, which affects the uniform thickness of the blown silicone film and reduces the quality of the diaphragm pressed by the diaphragm; The spoiler 44 on the edge separates the airflow of the adjacent air outlet 51 on the edge platform 5, and the airflow blown out by the adjacent air outlet 51 on the edge platform 5 is adjusted by the spoiler 4...

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Abstract

The invention relates to the technical field of vibrating diaphragms, in particular to a silica gel vibrating diaphragm adhesive tape and a preparation method thereof. The preparation method of the silica gel vibrating diaphragm adhesive tape comprises the steps of silicon material preparation, mixing and glue forming, blowing and pressing mold closing and rolling shaping; a mold closing machine used in blowing and pressing mold closing comprises a rack, a pressing mold, a film rolling column and a controller; and due to the production mode of injection molding of the silica gel vibrating diaphragm, the thickness of a diaphragm layer of the silica gel vibrating diaphragm is limited, meanwhile, the silica gel vibrating diaphragm produced through injection molding is interfered by the molding process of a mold cavity, internal stress which is not completely eliminated is achieved, and then the performance effect of the silica gel vibrating diaphragm in use is reduced; and therefore, themolding process of the vibrating diaphragm is sequentially performed on the blow-molded and stretched silica gel diaphragm through the pressing mold arranged on the mold closing machine in cooperationwith the protrusions on the diaphragm rolling columns, the molding thickness of the silica gel vibrating diaphragm is reduced, meanwhile, the blow-molded columnar silica gel diaphragm is divided intofour equal parts through the ribs, the production amount of the silica gel vibrating diaphragm is increased, and the preparation method of the silica gel vibrating diaphragm adhesive tape is improved.

Description

technical field [0001] The invention relates to the technical field of diaphragms, in particular to a silicone diaphragm tape and a preparation method for the silica gel diaphragm tape. Background technique [0002] The diaphragm plays a vital role in the sound reproduction performance of the micro-speaker, which determines the quality of the speaker from force to sound conversion, the power of the speaker and the quality of the playback sound; the diaphragm material requires low density, good rigidity and damping Moderate; the smaller the density of the diaphragm, the lighter the mass and the fastest vibration speed; its stiffness mainly determines the possible split vibration frequency of the speaker; the ideal vibration situation of the diaphragm is: when the voice coil starts, the diaphragm should start immediately, when When the voice coil has no audio current flowing and stops moving, the diaphragm should also stop immediately. It is better to take into account the int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01C09J7/10C09J7/30C09J183/07H04R31/00
CPCB29D7/01C09J7/10C09J7/30C09J183/04H04R31/00C09J2483/00C08L2205/025
Inventor 王鹏余泽军
Owner 安庆泽远化工有限公司
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