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Loudspeaker coating glue and coating process thereof

A glue and coating technology, applied in the direction of adhesives, shellac adhesives, adhesive types, etc., can solve the problems of poor coating quality and unoptimized glue coating process, and achieve excellent acid resistance and low flow Sexuality, the effect of ensuring coating quality

Inactive Publication Date: 2019-07-26
广州市建桥音响配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The gluing process is to apply glue, oil or other liquids, potting, and dripping onto the product, so that the product can play the role of sticking, potting, insulating, fixing, smooth surface, and good light transmission. Currently, it is used in electronic liquid crystal displays. Or in the electronic paper book ink screen industry, glue coating is often required to bond two flat products together. In this coating process, the glue used is usually curable glue, such as polyurethane coating, polyurethane acrylic coating Glue, epoxy polyurethane glue, etc. When in use, the laminated products are cured by UV (ultraviolet light curing) and moisture to make the products form a stable bond. During the assembly process of the speaker, many parts also need Use glue to fix, the coating quality of glue directly affects the quality of the speaker and the sound quality of the speaker, because the coated glue is liquid, in the lamination process, the glue will spread to the edge of the substrate under pressure, which will The edge of the glue-coated area is caused to spread, and the edge of the glue-coated area is undulated, that is, there is obvious glue overflow phenomenon, the glue coating process is not optimized, and the coating quality is not good

Method used

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  • Loudspeaker coating glue and coating process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put 30 parts of polyvinyl alcohol in a round bottom flask, add 5 parts of superfine barium sulfate, 3 parts of preservative, 2 parts of dispersant, 6 parts of butyl rubber and 100 parts of water, heat and stir, and keep the temperature at 90°C Until the polyvinyl alcohol is completely dissolved, cool down to 70°C, add 36% hydrochloric acid dropwise and stir for 20 minutes to adjust the pH value, then add 20 parts of formaldehyde and continue stirring at constant temperature for 45 minutes, then add 2 parts of urea for amination treatment, and then add Continue to stir 5 parts of tributyl phosphate for 5 minutes, finally add PH to neutral, cool down to room temperature and discharge, use cotton yarn and organic solvent to remove oil and impurities on the surface to be pasted, etc. For oil and impurities on the attached surface, cut a suitable small hole on the tip of the rubber tube, put it into a sizing gun, drip the prepared glue to the center line of the attached surfa...

Embodiment 2

[0026] Put 40 parts of polyvinyl alcohol in a round bottom flask, add 6 parts of superfine barium sulfate, 4 parts of preservative, 3 parts of dispersant, 7 parts of butyl rubber and 120 parts of water, heat and stir, and keep the temperature at 92 °C Until the polyvinyl alcohol is completely dissolved, cool down to 75°C, add 37% hydrochloric acid dropwise and stir for 25 minutes to adjust the pH value, then add 30 parts of formaldehyde and continue stirring at constant temperature for 50 minutes, then add 2.7 parts of urea for amination treatment, and then add The defoamer continued to stir for 8 minutes, and finally added the pH to neutral, cooled the temperature to room temperature and discharged, and used cotton yarn and organic solvent to remove oil and impurities on the surface to be attached. For oil and impurities, etc., cut a suitable small hole on the tip of the rubber tube, put it into the glue gun, drip the prepared glue to the center line of the substrate attachmen...

Embodiment 3

[0029]Put 45 parts of polyvinyl alcohol in a round bottom flask, add 8 parts of superfine barium sulfate, 5 parts of preservative, 5 parts of dispersant, 10 parts of butyl rubber and 150 parts of water, heat and stir, and keep the temperature at 95 °C Until the polyvinyl alcohol is completely dissolved, cool down to 80°C, add 38% hydrochloric acid dropwise and stir for 30 minutes to adjust the pH value, then add 35 parts of formaldehyde and continue stirring at constant temperature for 60 minutes, then add 3 parts of urea for amination treatment, and then add The defoamer continued to stir for 10 minutes, and finally added the PH to neutral, cooled the temperature to room temperature and discharged, and used cotton yarn and organic solvent to remove oil stains and impurities on the surface to be attached. For oil and impurities, etc., cut a suitable small hole on the tip of the rubber tube, put it into the glue gun, drip the prepared glue to the center line of the substrate att...

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Abstract

The invention provides loudspeaker coating glue. The loudspeaker coating glue comprises, by weight, 100-150 parts of clear water, 30-45 parts of polyvinyl alcohol, 20-35 parts of formaldehyde, 10-15 parts of hydrochloric acid, 2-3 parts of urea, 5-8 parts of antifoaming agents, 5-8 parts of flowing agents, 3-5 parts of preservatives, 2-5 parts of dispersing agents and 6-10 parts of adhesives. A coating process includes S1) glue preparation: feeding the polyvinyl alcohol to a round-bottomed flask, sequentially adding the flowing agents, the preservatives, the dispersing agents, the adhesives and the clear water, stirring the mixture while heating, maintaining the temperature at 90-95 DEG C until the polyvinyl alcohol is completely dissolved, lowering the temperature to 70-80 DEG C, and dropwise adding 36-38% of the hydrochloric acid to adjust the pH value. The loudspeaker coating glue and the coating process thereof have the advantages that proper ingredients are selected to prepare theliquid glue with low fluidity, the flue is not liable to overflow towards the edge under pressure after coating, the coating mode is optimized, waste of the glue is reduced, and the coating quality is ensured.

Description

technical field [0001] The invention relates to the technical field of glue and coating thereof, in particular to a horn coating glue and a coating process thereof. Background technique [0002] The gluing process is to apply glue, oil or other liquids, potting, and dripping onto the product, so that the product can play the role of sticking, potting, insulating, fixing, smooth surface, and good light transmission. Currently, it is used in electronic liquid crystal displays. Or in the electronic paper book ink screen industry, glue coating is often required to bond two flat products together. In this coating process, the glue used is usually curable glue, such as polyurethane coating, polyurethane acrylic coating Glue, epoxy polyurethane glue, etc. When in use, the laminated products are cured by UV (ultraviolet light curing) and moisture to make the products form a stable bond. During the assembly process of the speaker, many parts also need Use glue to fix, the coating qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J129/04C09J123/22C09J193/02C09J11/06C09J11/04
CPCC08K2003/3045C08L2205/03C09J11/04C09J11/06C09J129/04C08L23/22C08L93/02C08K5/521C08K3/30
Inventor 甘梓彬
Owner 广州市建桥音响配件有限公司
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