Pressure-sensitive adhesive applied to ultra-thin double faced adhesive tape and preparation method of pressure-sensitive adhesive

A technology of double-sided adhesive and pressure-sensitive adhesive, applied in the field of pressure-sensitive adhesive, can solve the problems of high adhesive force, difficult to achieve thinning at the same time, etc., and achieve the effects of high adhesive force, excellent pressure sensitivity, and simple and convenient preparation method.

Active Publication Date: 2014-10-08
东莞宏石功能材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the PET double-sided adhesives currently on the market are made of traditional acrylic solvent-based glue, and the thickness is mostly 30~50um. If the coating thickness of acrylic solvent-based glue is reduced, the adhesion will also decrease. The performance requirements of double-sided tape for assembly require at least 1kg/in adhesive force. If traditional

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The preparation method of the pressure-sensitive adhesive applied to the ultra-thin double-sided adhesive tape of the present embodiment comprises the following preparation steps:

[0062] a, 35 parts of butyl acrylate, 10 parts of 2-ethylhexyl acrylate, 0.5 part of acrylic acid, 1 part of hydroxyethyl acrylate, 30 parts of ethyl acetate and 60 parts of toluene are loaded into a three-neck round bottom flask, and then The three-neck round-bottomed flask is respectively connected with a stirrer, a thermometer, and a condenser, and the above-mentioned raw materials are stirred evenly by the stirrer, and the above-mentioned raw materials are heated by a water bath at the same time;

[0063] b. After heating to 85°C, add a part of 0.3 parts of benzoyl peroxide while stirring;

[0064] c. After adding 0.3 parts of benzoyl peroxide and keeping it at 85°C for 1 hour after heat release, add 0.5 parts of benzoyl peroxide and 4 parts of ethyl acetate to continue the reaction;

...

Embodiment 2

[0069] The preparation method of the pressure-sensitive adhesive applied to the ultra-thin double-sided adhesive tape of the present embodiment comprises the following preparation steps:

[0070] a, 45 parts of butyl acrylate, 20 parts of 2-ethylhexyl acrylate, 2 parts of acrylic acid, 2 parts of hydroxyethyl acrylate, 40 parts of a part of ethyl acetate and 70 parts of toluene are loaded into a three-neck round bottom flask, and then Connect the three-necked round-bottomed flask to a stirrer, a thermometer, and a condenser respectively, and stir the above-mentioned raw materials evenly through the stirrer, and heat the above-mentioned raw materials through a water bath at the same time;

[0071] b. After heating to 86°C, add 1 part of benzoyl peroxide while stirring;

[0072] c. After adding 1 part of benzoyl peroxide and keeping it at 87°C for 0.8 hours after heat release, add 1 part of benzoyl peroxide and 10 parts of ethyl acetate to continue the reaction;

[0073] d. Aft...

Embodiment 3

[0077] The preparation method of the pressure-sensitive adhesive applied to the ultra-thin double-sided adhesive tape of the present embodiment comprises the following preparation steps:

[0078] a, 32 parts of butyl acrylate, 12 parts of 2-ethylhexyl acrylate, 0.7 part of acrylic acid, 1.2 parts of hydroxyethyl acrylate, 34 parts of ethyl acetate and 63 parts of toluene are loaded into a three-necked round bottom flask, and then The three-neck round-bottomed flask is respectively connected with a stirrer, a thermometer, and a condenser, and the above-mentioned raw materials are stirred evenly by the stirrer, and the above-mentioned raw materials are heated by a water bath at the same time;

[0079] b. After heating to 87°C, add 0.4 parts of benzoyl peroxide while stirring;

[0080] c. After adding 0.5 parts of benzoyl peroxide and keeping it at 88°C for 0.6 hours after heat release, add 0.5 parts of benzoyl peroxide and 4 parts of ethyl acetate to continue the reaction;

[0...

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Abstract

The invention relates to the technical field of gloss oil and in particular relates to a pressure-sensitive adhesive applied to an ultra-thin double faced adhesive tape and a preparation method of the pressure-sensitive adhesive. The pressure-sensitive adhesive applied to the ultra-thin double faced adhesive tape consists of 35-45 parts of butyl acrylate, 10-20 parts of acrylic acid 2-phthalic acid ester, 0.5-2 parts of acrylic acid, 1-2 parts of hydroxyethyl acrylate, 32-50 parts of ethyl acetate, 60-70 parts of methylbenzene, 2-3 parts of dilauroyl peroxide, 5-15 parts of vinyl acetate, 10-30 parts of terpene-phenolic resin and 0.3-1 part of aluminium acetylacetonate. The finally prepared pressure-sensitive adhesive is a double-component cross-linked acrylate pressure-sensitive adhesive, and the advantages of acrylate and terpene-phenolic resin are integrated, so that the adhesive force of the pressure-sensitive adhesive can be over 1kg/in when the total thickness of the double faced adhesive tape is 15mu m or below, and the prepared double faced adhesive tape can meet the requirements on thinness and high adhesive force in the field of electronic industry.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to a pressure-sensitive adhesive applied to ultra-thin double-sided adhesives and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive products are widely used in various industries such as packaging, electrical appliances and electronics, construction, medical and health care, automobiles and household daily necessities, and play various bonding functions such as bundling, protection, sealing, insulation and fixing. In recent years, electronic products have generally used structural adhesives or double-sided adhesives instead of traditional screws as assembly components. Therefore, in response to the thinner design of electronic products, there is also a requirement for the total thickness of double-sided adhesives to be thinner. However, most of the PET double-sided adhesives currently on the market are made of traditional ac...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J145/00C09J7/02C09J11/06C08F220/18C08F220/28C08F218/08
Inventor 游群芳
Owner 东莞宏石功能材料科技有限公司
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