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A kind of easy-pull adhesive tape and its preparation method and application

An easy-pull tape and tape technology, which is applied in the directions of adhesives, monocarboxylate copolymer adhesives, films/sheets without carriers, etc. and other problems, to achieve the effect of easy stretching and removal, low thickness and less space occupied

Active Publication Date: 2021-05-25
东莞市古川胶带有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, at present, miniaturization and high integration are the mainstream trends in the development of electronic products. The pull-up tape with the above structure has the disadvantages of many layers and high thickness, which is not conducive to the thinning of electronic products.

Method used

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  • A kind of easy-pull adhesive tape and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides an easy-to-pull adhesive tape, comprising a double-sided release film and an adhesive layer arranged on one side of the double-sided release film;

[0051] The adhesive layer includes the following raw material components in weight percentage: 45% of EVA elastomer, 30% of acrylonitrile-butadiene-acrylate block copolymer, 10% of hyperbranched polyurethane, 10% of rosin resin, 3% of titanium dioxide % and isocyanate curing agent 2%;

[0052] Wherein, the weight-average molecular weight of the hyperbranched polyurethane is 3000; the content of the VA unit in the EVA elastomer is 60wt%, and the weight-average molecular weight is 12000; the weight-average molecular weight of the acrylonitrile-butadiene-acrylate block copolymer is 10000; The particle size of titanium dioxide is 10-20 μm.

[0053] The preparation method of above-mentioned easy-to-pull adhesive tape is as follows:

[0054] (1) Add EVA elastomer, acrylonitrile-butadiene-acrylate block ...

Embodiment 2

[0057] This embodiment provides an easy-to-pull adhesive tape, comprising a double-sided release film and an adhesive layer arranged on one side of the double-sided release film;

[0058] The adhesive layer includes the following raw material components in percentage by weight: 25% of EVA elastomer, 25% of acrylonitrile-butadiene-acrylate block copolymer, 20% of hyperbranched polyurethane, 8% of rosin resin, 5% of titanium dioxide %, unsaturated polycarboxylic acid polymer dispersant 5%, polyoxypropylene glyceryl ether 5%, acrylate film-forming agent 5% and isocyanate curing agent 2%;

[0059] Wherein, the weight-average molecular weight of the hyperbranched polyurethane is 5000; the content of the VA unit in the EVA elastomer is 50wt%, and the weight-average molecular weight is 8000; the weight-average molecular weight of the acrylonitrile-butadiene-acrylate block copolymer is 10000; The particle size of titanium dioxide is 1-5 μm.

[0060] The preparation method of above-me...

Embodiment 3

[0064] This embodiment provides an easy-to-pull adhesive tape, comprising a double-sided release film and an adhesive layer arranged on one side of the double-sided release film;

[0065] The adhesive layer includes the following raw material components in weight percentage: 25% of EVA elastomer, 45% of acrylonitrile-butadiene-acrylate block copolymer, 10% of hyperbranched polyurethane, 6% of terpene phenolic resin, titanium White powder 4%, unsaturated polycarboxylic acid polymer dispersant 4%, polyoxypropylene glyceryl ether 2%, acrylate film forming agent 2% and isocyanate curing agent 2%;

[0066] Wherein, the weight-average molecular weight of the hyperbranched polyurethane is 3000; the content of the VA unit in the EVA elastomer is 50wt%, and the weight-average molecular weight is 8000; the weight-average molecular weight of the acrylonitrile-butadiene-acrylate block copolymer is 15000; The particle size of titanium dioxide is 1-5 μm.

[0067] The preparation method of ...

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Abstract

The invention provides an easy-pull adhesive tape, a preparation method and application thereof. The easy-to-pull tape includes a double-sided release film and an adhesive layer arranged on one side of the double-sided release film; the adhesive layer includes the following raw material components in percentage by weight: EVA elastomer 25-45%, Acrylonitrile-butadiene-acrylate block copolymer 25-45%, hyperbranched polyurethane 10-25%, tackifying resin 5-10%, titanium dioxide 2-5% and curing agent 1-5%. The easy-to-pull adhesive tape is prepared by dissolving and dispersing the raw material components of the adhesive layer in an organic solvent, coating on a double-sided release film, heating, curing and drying. The easy-to-pull adhesive tape provided by the invention not only has good bonding performance, but also has high tensile strength and elongation at break, and is easy to remove by stretching; and it has no base film, low thickness, and takes up less space Less, contribute to the thinning and lightening of electronic products.

Description

technical field [0001] The invention belongs to the technical field of adhesive materials, and in particular relates to an easy-to-pull adhesive tape, a preparation method and application thereof. Background technique [0002] With the rapid development of electronics and communication technologies, electronic products such as smart phones and tablet computers have become an indispensable part of people's work and life. Most of these electronic products use fixed batteries. In order to securely fix the batteries, adhesives are used to fix the batteries on the motherboard. However, this will make it difficult to disassemble the components of electronic products, and it will be difficult to clean up the residual adhesive, which will bring difficulties to product maintenance and battery recycling. [0003] In this context, the easy-to-pull tape came into being. The easy-to-pull tape can realize the firm bonding of the battery and the motherboard in the direction perpendicular...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/10C09J131/04C09J153/00C09J175/04C09J11/04C09J11/08
CPCC08K2003/2241C08L2205/035C09J11/04C09J11/08C09J131/04C09J153/00C09J2431/00C09J2453/00C09J7/10C09J2301/308C08L53/00C08L75/04C08L93/04C08K3/22C08L31/04C08L61/14
Inventor 王建义徐宏飞王博文周雄安汪刘兵
Owner 东莞市古川胶带有限公司
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