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Double-sided adhesive for ultra-wideband loudspeaker diaphragm and preparation method thereof

A double-sided tape and speaker technology, applied in the field of double-sided tape, can solve the problems of the adhesive being susceptible to heat strength and stiffness, reducing the high-frequency cut-off frequency, unable to meet the high-definition voice and other problems, to meet the requirements of high-definition voice communication, vibration absorption performance improvement, improved effect

Active Publication Date: 2018-04-10
XIAMEN GREAT SOUND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during use, the adhesive is easily heated to reduce the strength and stiffness, which affects the bonding performance
In addition, the adhesive is prone to polarization when the diaphragm undergoes large displacement vibration, resulting in poor product stability, total harmonic distortion, and lower cut-off frequency of high frequencies, which cannot meet the demand for high-definition voice

Method used

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  • Double-sided adhesive for ultra-wideband loudspeaker diaphragm and preparation method thereof
  • Double-sided adhesive for ultra-wideband loudspeaker diaphragm and preparation method thereof
  • Double-sided adhesive for ultra-wideband loudspeaker diaphragm and preparation method thereof

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preparation example Construction

[0030] The present invention proposes a kind of preparation method that is used for the double-sided adhesive tape of ultra-broadband loudspeaker diaphragm, and it comprises the following steps:

[0031] S1, take 1 / 5-2 / 5 of the monomer, 1 / 5-2 / 5 of the initiator and 1 / 5-2 / 5 of the organic solvent, stir, and heat up to 75°C-80°C to react to obtain the first reaction thing;

[0032] S2, drop the mixed solution in the first reactant, the mixed solution includes the remaining monomer, 1 / 5-2 / 5 of the organic solvent and 1 / 5-2 / 5 of the initiator, and add the remaining Initiator, keep warm for 1.5-3h to obtain the second reactant;

[0033] S3, use the remaining organic solvent to dissolve the tackifying resin, then add it to the second reactant, add a crosslinking agent after mixing, and obtain a double-sided adhesive tape after mixing.

[0034]Segmented reaction is carried out through S1 step and S2 step to ensure that each component can fully react to form a product with uniform a...

Embodiment 1

[0040] A kind of double-sided tape used for ultra-wideband speaker diaphragm provided in this embodiment is prepared according to the following steps:

[0041] (1) Prepare the following raw materials:

[0042] Monomer: 53 parts of isooctyl acrylate, 13 parts of butyl acrylate, 5 parts of isobutyl methacrylate and 3 parts of acrylic acid;

[0043] Tackifying resin: 26 parts of modified rosin resins;

[0044] Initiator: 0.5 parts of azobisisobutyronitrile;

[0045] Crosslinking agent: 0.2 parts of aluminum triacetylacetonate;

[0046] Organic solvent: 90 parts of toluene;

[0047] S1, take 1 / 3 of the monomer, 1 / 3 of the initiator and 1 / 3 of the organic solvent and stir, heat up to 75°C for reaction to obtain the first reactant;

[0048] S2, drop the mixed solution in the first reactant, the mixed solution includes the remaining monomer, 1 / 3 of the organic solvent and 1 / 3 of the initiator, add the remaining initiator after the dropwise addition, keep the temperature for 1.5h,...

Embodiment 2

[0051] A kind of double-sided tape used for ultra-wideband speaker diaphragm provided in this embodiment is prepared according to the following steps:

[0052] (1) Prepare the following raw materials:

[0053] Monomer: 54 parts of isooctyl acrylate, 12 parts of butyl acrylate, 4 parts of isobutyl methacrylate and 4 parts of acrylic acid;

[0054] Tackifying resin: 25 parts of modified rosin resins;

[0055] Initiator: 0.3 parts of azobisisobutyronitrile;

[0056] Crosslinking agent: 0.1 part of aluminum triacetylacetonate;

[0057] Organic solvent: 81 parts of toluene;

[0058] S1, take 1 / 3 of the monomer, 1 / 3 of the initiator and 1 / 3 of the organic solvent and stir, heat up to 80°C for reaction to obtain the first reactant;

[0059] S2, drop the mixed solution in the first reactant, the mixed solution includes the remaining monomer, 1 / 3 of the organic solvent and 1 / 3 of the initiator, add the remaining initiator after the dropwise addition, keep the temperature for 2h, an...

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Abstract

The invention provides a double-sided adhesive for an ultra-wideband loudspeaker diaphragm and a preparation method thereof, and relats to the technical field of viscose materials. The raw materials of the double-sided adhesive include monomers, tackifying resin, an organic solvent, an initiator, and a cross-linking agent. In parts by weight, the monomers include 50 to 60 parts of isooctyl acrylate, 10 to 15 parts of butyl acrylate, 2 to 5 parts of isobutyl methacrylate and 2 to 6 parts of acrylic acid. The weight part number of the tackifying resin is 22 to 28 parts, the weight part number ofthe organic solvent is 80 to 90 parts, the weight part number of the initiator is 0.1 to 0.5 part, and the weight part number of the cross-linking agent is 0.05 to 0.4 part. In addition, the presentinvention also relates to the preparation method of the double-sided adhesive. By selecting the suitable copolymerization monomer, functional monomer and tackifying resin, a polymerization reaction isperformed under the action of the initiator and the cross-linking agent for obtaining the double-sided adhesive. The double-sided adhesive has high strength, strong adhesive properties, high temperature resistance, and ductility resistance, etc. Especially when applied to diaphragms of loudspeakers, the double-sided adhesive can guarantee the ultra-wideband effect of loudspeakers and meet the demand of high-definition voice.

Description

technical field [0001] The invention relates to the technical field of adhesive materials, and in particular to a double-sided adhesive used for ultra-wideband speaker diaphragms. Background technique [0002] With the advancement of science and technology and the development of society, people have higher and higher requirements for high-definition voice communication of electroacoustic products, such as receivers and speakers. Electroacoustic devices are required to develop towards small size, high sensitivity, high sound quality, high fidelity, and ultra-wideband. High-definition voice largely depends on the performance of the diaphragm in electroacoustic products. In the prior art, many modifications are made to the structure and material properties of the diaphragm in order to obtain electro-acoustic products with high sound quality. However, the transformation of the diaphragm structure and materials is complicated and costly, and the effect of improving the voice qu...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J193/04C09J11/08C09J11/06C09J11/04C08F220/18C08F220/06
CPCC08F220/18C08F220/1808C08L2201/08C09J11/04C09J11/06C09J11/08C09J133/064C08L93/04C08K5/0091C08K9/00C08K7/24C08F220/1804C08F220/06
Inventor 吴振兴
Owner XIAMEN GREAT SOUND TECH
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