High-pressure color-changing pressure sensitive adhesive, preparation method thereof, adhesive tape and application of high-pressure color-changing pressure sensitive adhesive

A technology of pressure-sensitive adhesives and high pressure, applied in the direction of pressure-sensitive films/sheets, bonding methods using foam adhesives, adhesives, etc., can solve problems affecting the performance of lithium batteries

Active Publication Date: 2020-01-10
东莞市骏青电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the preparation process of lithium batteries, glue needs to be coated on the base material of lithium batteries, and then a high-voltage process is applied. If this high-voltage process is forgotten by the staff, it will affect the performance of lithium batteries.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0036] The present invention also protects the preparation method of the above-mentioned high-pressure color-changing pressure-sensitive adhesive, which includes the following steps:

[0037] mixing isooctyl acrylate, butyl acrylate, hydroxyethyl acrylate, methyl methacrylate, ester solvents, aromatic solvents and initiators and stirring evenly to form a first mixture;

[0038] Take 10%-50% of the first mixture, add it to the reactor, stir and heat up to 70°C-80°C, and react for the first preset time;

[0039] Add the remaining first mixture dropwise to the reactor, keep warm for the second preset time, and lower the temperature to 20°C-40°C;

[0040] Add the crosslinking agent and foaming agent into the reaction kettle and stir evenly.

[0041] Among them, 30% of the first mixture is firstly added to the reactor, and then the remaining 70% is added to the reactor.

[0042] The first preset time is 0.2h-2h. For example, the first preset time is 0.2h, 0.5h, 1h or 2h.

[004...

Embodiment 1

[0051]This embodiment provides a high-pressure color-changing pressure-sensitive adhesive comprising the following components in parts by weight: 6 parts of isooctyl acrylate, 22 parts of butyl acrylate, 3.5 parts of hydroxyethyl acrylate, 8 parts of methyl methacrylate, 28 parts of ethyl acrylate 12 parts of toluene, 2 parts of ethylene-vinyl acetate copolymer, 0.25 parts of benzoyl peroxide initiator, 2 parts of isocyanate crosslinking agent and 12 parts of azo compound blowing agent. Mix and stir isooctyl acrylate, butyl acrylate, hydroxyethyl acrylate, methyl methacrylate, ethyl ester, toluene and the initiator to form the first mixture; take 30% of the first mixture and add it to the reaction kettle, stir and heat up to 75°C, react for 1h, drop the remaining first mixture into the reactor within 3h, keep warm for 3h, cool down to 38°C, mix ethylene-vinyl acetate copolymer, crosslinking agent and foaming Add the agent to the reaction kettle and stir evenly.

Embodiment 2

[0053] This embodiment provides a high-pressure color-changing pressure-sensitive adhesive comprising the following components by weight: 5 parts of isooctyl acrylate, 20 parts of butyl acrylate, 3 parts of hydroxyethyl acrylate, 6 parts of methyl methacrylate, 25 parts of ethyl acrylate 10 parts, 10 parts of toluene, 1 part of ethylene-vinyl acetate copolymer, 0.2 parts of benzoyl peroxide initiator, 0.5 parts of isocyanate crosslinking agent and 10 parts of azo compound foaming agent. Mix and stir isooctyl acrylate, butyl acrylate, hydroxyethyl acrylate, methyl methacrylate, ethyl ester solvent, toluene and initiator to form the first mixture; take 10% of the first mixture, add Reactor, stir and heat up to 70°C, react for 0.2h, add the remaining first compound dropwise to the reactor within 3.5, keep warm for 2h, cool down to 20°C, mix ethylene-vinyl acetate copolymer, crosslinking agent and The foaming agent is added to the reaction kettle and stirred evenly.

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PUM

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Abstract

The invention discloses a high-pressure color-changing pressure sensitive adhesive, a preparation method thereof, an adhesive tape and application of the high-pressure color-changing pressure sensitive adhesive. The high-pressure color-changing pressure sensitive adhesive comprises the following components: 2-ethylhexyl acrylate, butyl acrylate, hydroxyethyl acrylate, methyl methacrylate, an estersolvent, an aromatic solvent, an initiator, a crosslinking agent and a foaming agent; the preparation method of the high-pressure color-changing pressure sensitive adhesive comprises the following steps: mixing the 2-ethylhexyl acrylate, butyl acrylate, hydroxyethyl acrylate, methyl methacrylate, ester solvent, aromatic solvent and initiator, and uniformly stirring to form a first mixture; adding10%-50% of the first mixture into a reaction kettle, stirring and heating to react for a first preset time; dripping the remaining first mixture into the reaction kettle, performing heat preservationreaction for a second preset time, and cooling; and adding the crosslinking agent and the foaming agent into the reaction kettle and stirring evenly. The high-voltage color-changing pressure-sensitive adhesive can identify the lithium battery, prevent skipping high-voltage procedures and ensure the performance of the lithium battery.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a high-pressure color-changing pressure-sensitive adhesive, a preparation method thereof, an adhesive tape and applications of the high-pressure color-changing pressure-sensitive adhesive. Background technique [0002] Acrylic pressure-sensitive adhesives are a type of adhesives that are widely used and are developing very rapidly. Compared with traditional rubber-type pressure-sensitive adhesives, it has the advantages of excellent pressure sensitivity, adhesion, oxidation resistance, light resistance and aging resistance. With the rapid development of digital products, electric vehicles and electric bicycles, the demand for lithium batteries has increased significantly, so the adhesive tape used in the lithium battery industry has a great market demand. [0003] In the preparation process of lithium batteries, glue needs to be coated on the base material of lithium batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/38C09J5/08C08F220/18C08F220/28C08F220/14C08J9/10C08L33/08C08L23/08C08L53/02H01M10/058
CPCC08F220/18C08J9/103C08J2203/04C08J2333/08C08J2423/08C08J2453/02C09J5/08C09J133/066C09J7/38H01M10/058C08L23/0853C08L53/02Y02E60/10Y02P70/50
Inventor 张涛辉伍平徐智超
Owner 东莞市骏青电子科技有限公司
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