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A kind of extremely thin double-sided adhesive tape and preparation method thereof

A double-sided tape, extremely thin technology, used in adhesives, pressure-sensitive films/sheets, film/sheet-like adhesives, etc. and other problems, to achieve good bonding effect, stickiness and durability, and improve the effect of cohesion

Inactive Publication Date: 2020-02-18
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

However, the nanometer metal in the above-mentioned ultra-thin polyester double-sided tape is easily oxidized, causing the tape to turn yellow, fall off, and reduce the bonding effect, and its thickness is not thin enough, and the bonding effect on small gaps is also poor.

Method used

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  • A kind of extremely thin double-sided adhesive tape and preparation method thereof
  • A kind of extremely thin double-sided adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, the preparation of modified epoxy resin

[0043] Glycidyl methacrylate, butyl methacrylate and vinyl acetate were subjected to a copolymerization reaction at a temperature of 70° C. for 8 hours, and the weight percentages of glycidyl methacrylate, butyl methacrylate and vinyl acetate were: 22% of glycidyl methacrylate, 46% of butyl methacrylate, 32% of vinyl acetate.

Embodiment 2

[0044] Embodiment 2, the preparation of cationic polyepoxysuccinic acid

[0045] A. maleic anhydride is added to dissolve in water, the molar ratio of maleic anhydride to water is 1:9, sodium hydroxide is added to adjust the pH value to 5~6, to obtain maleic acid solution;

[0046] B. Add sodium tungstate to maleic acid solution, heat to 90°C, and continuously add aqueous hydrogen peroxide solution with a volume concentration of 35%. The amount of aqueous hydrogen peroxide added is the total amount of maleic acid solution 1.5 times the volume, while adding sodium hydroxide to adjust the pH value to 5-6 to obtain sodium epoxy succinate;

[0047] C. Add calcium hydroxide to the sodium epoxysuccinate obtained in step B and polymerize at 100°C for 100 minutes. The weight ratio of sodium epoxysuccinate to calcium hydroxide is 1:0.8, acidify to obtain polyepoxysuccinic acid ;

[0048] D. When the temperature of the polyepoxysuccinic acid obtained in step C is raised to 35°C, dimet...

Embodiment 3

[0049] Embodiment 3, a kind of extremely thin double-sided adhesive tape

[0050] The ultra-thin double-sided adhesive tape includes a PET single-sided release film, an acrylic pressure-sensitive adhesive layer and a PET transparent film, and the upper and lower surfaces of the PET transparent film are respectively attached with an acrylic pressure-sensitive adhesive layer. The outer surface is covered with a PET single-sided release film; the acrylic pressure-sensitive adhesive layer is composed of the following preparation raw materials and parts by weight thereof:

[0051] 80 parts of acrylic adhesive, 5 parts of thinner, 5 parts of modified epoxy resin, 2 parts of trimethylolpropane triacrylate, 2 parts of dispersant and 2 parts of isocyanate curing agent; Toluene forms by weight ratio 2:5; Described modified epoxy resin is the modified epoxy resin that embodiment 1 makes; Described cationic polyepoxysuccinic acid is the cationic polyepoxysuccinic acid that embodiment 2 ma...

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Abstract

The invention belongs to the technical field of a double sided tape of an electronic product, and particularly relates to an extremely thin double sided tape and a preparation method thereof. The extremely thin double sided tape provided by the invention comprises a PET single-side release film, acrylic acid pressure-sensitive adhesive layers and a PET transparent film, wherein the acrylic acid pressure-sensitive adhesive layers are respectively attached at the upper and lower surfaces of the PET transparent film; the PET single-side release film is covered at the outer surface of the acrylicacid pressure-sensitive adhesive layer; the acrylic acid pressure-sensitive adhesive layer is mainly prepared from acrylic acid adhesives, diluents, modified epoxy resin, trimethylolpropane triacrylate, dispersing agents and isocyanate curing agents. The prepared extremely thin double sided tape has good flowability and excellent attaching performance; tiny gaps can realize seamless bonding; the bonding effect is good; meanwhile, excellent heat resisting performance and good antioxidation performance are realized; the service life of the double sided tape can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of double-sided adhesive tapes for electronic products, and in particular relates to an ultra-thin double-sided adhesive tape and a preparation method thereof. Background technique [0002] In the early days of electronic product design, R&D and manufacturing, most components were fixed and installed using traditional mechanical fixation such as screws, welding, rivets, etc., or using solvent glue or hot melt adhesive, etc., which will cause stress concentration on the joints and easy loosening It will fall off, and it will also lead to low assembly efficiency, damage and contamination of the interface and other defects. At the same time, it will also increase the weight of the product, resulting in clumsy and heavy appearance of the product, and poor portability. [0003] With the rapid development of modern microelectronics technology and the vigorous development of new materials and new processes, great c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/38C09J4/02C09J4/06
CPCC09J4/06C09J7/255C09J7/385C09J2301/302C09J2467/005C09J2467/006
Inventor 王建义徐宏飞王博文黄世峰付江勇杨春吉周雄安吴荣斌罗通化门佃文
Owner 东莞市古川胶带有限公司