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Adhesive for aluminum battery packaging aluminum plastic film, aluminum plastic film and preparation method of aluminum plastic film

A technology of aluminum-plastic film and lithium battery, applied in the direction of adhesives, adhesive types, chemical instruments and methods, etc., can solve problems such as poor electrolyte resistance, weak adhesion, delamination of aluminum-plastic films, etc., to achieve adhesion Improved performance, high adhesion, good resistance to solvents and acids

Inactive Publication Date: 2019-02-15
JIANGXI RUIERGY NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the object of the present invention is to provide an adhesive for lithium battery packaging aluminum-plastic film, aluminum-plastic film and its preparation method, which are used to solve the internal problems of lithium battery packaging aluminum-plastic film in the prior art. The first-layer adhesive has poor electrolyte resistance, weak adhesion, and is prone to problems such as delamination of aluminum-plastic films

Method used

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  • Adhesive for aluminum battery packaging aluminum plastic film, aluminum plastic film and preparation method of aluminum plastic film
  • Adhesive for aluminum battery packaging aluminum plastic film, aluminum plastic film and preparation method of aluminum plastic film

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preparation example Construction

[0049] The present invention also provides a method for preparing an adhesive for lithium battery packaging aluminum-plastic film in the above scheme, the preparation method at least comprising:

[0050]adding the main resin into the first solvent, heating, adding the tackifying resin, the anti-hydrolysis agent, the second solvent and the curing agent in sequence after stirring, and then filtering to remove the insoluble matter to obtain the obtained Adhesives mentioned above.

[0051] As an example, the total solid content of the adhesive is between 10% and 20%.

[0052] As an example, the first solvent includes a mixture of cyclohexane and butanone, and the second solvent includes a mixture of cyclohexane and butanone.

[0053] As an example, in the first solvent, the mass ratio of the cyclohexane to the butanone is between 7:1 and 9:1; in the second solvent, the cyclohexane and the butanone The mass ratio of butanone is between 1:2 and 1:4.

[0054] The present invention...

Embodiment 1

[0067] 1. The high-adhesion adhesive for lithium battery packaging aluminum-plastic film of the present embodiment includes at least the following components in mass percentage: 10% main resin, 1.5% curing agent, 0.5% tackifying resin, 0.2% anti-hydrolysis agent , 87.8% mixed solvent, wherein the mixed solvent is 58.8% cyclohexane, 29% butanone.

[0068] 2. The preparation method of the high-adhesion adhesive for lithium battery packaging aluminum-plastic film of this embodiment includes: first adding the main resin to the mixed solvent, heating at 40 ° C for 24 hours, and then adding the corresponding amount of Tackifying resin, anti-hydrolysis agent, mixed solvent (cyclohexane, methyl ethyl ketone) and curing agent, the total solid content of the adhesive is about 10%, and the PP filter element is used for filtration to remove insoluble matter, that is, for coating.

[0069] 3. The preparation method of the lithium battery packaging aluminum-plastic film of the present embod...

Embodiment 2

[0071] 1. The high-adhesion adhesive for lithium battery packaging aluminum-plastic film of the present embodiment includes at least the following components in mass percentage: 12% main resin, 1.5% curing agent, 0.8% tackifying resin, 0.2% anti-hydrolysis agent , 85.5% mixed solvent, wherein the mixed solvent is 58.5% cyclohexane, 27% butanone.

[0072] 2. The preparation method of the high-adhesion adhesive for lithium battery packaging aluminum-plastic film in this embodiment includes: first adding the main resin into the mixed solvent, heating at 40°C for 24 hours, and then adding the corresponding amount of Tackifying resin, anti-hydrolysis agent, mixed solvent (cyclohexane, methyl ethyl ketone) and curing agent, the total solid content of the adhesive is about 12%, filter with a PP filter element to remove insoluble matter, that is, to use for coating

[0073] 3. The preparation method of the aluminum-plastic film for lithium battery packaging in this embodiment includes...

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Abstract

The invention provides an adhesive for an aluminum battery packaging aluminum plastic film, the aluminum plastic film and a preparation method of the aluminum plastic film. The adhesive at least comprises the following components in percentage by mass: 10-15% of a main resin, 1-3% of a curing agent, 0.5-1%of a tackifying resin, 0.1-0.5% of an anti-hydrolysis agent and 65-90% of a solvent, whereinthe main resin comprises one or more of maleic anhydride modified styrene, polypropylene and a polyolefin elastomer; the curing agent comprises a mixture of one or more polymers in an epoxy resin system. In the aluminum plastic film, the adhesive is coated on the surface of an adhesive layer of a cast polypropylene film, and dried to serve as an inner adhesive layer. The inner adhesive layer is used for dry compounding of an aluminum foil layer of the aluminum battery packaging aluminum plastic film and the cast polypropylene layer, so that aluminum plastic film products have high adhesion andelectrolyte resistance; in addition, the adhesive has a relatively long storage cycle.

Description

technical field [0001] The invention relates to the technical field of lithium battery flexible packaging, in particular to an adhesive for lithium battery packaging aluminum-plastic film, an aluminum-plastic film and a preparation method thereof. Background technique [0002] Lithium battery flexible packaging has become a more and more widely used packaging method. Its main structure is composed of three layers of film materials. From the outside to the inside, there are protective layer, aluminum foil layer and heat sealing layer. Usually the protective layer is Biaxially oriented nylon film, heat seal layer is cast polypropylene (CPP). The electrolyte of lithium batteries contains a variety of organic solvents and lithium salts, and lithium salts will quickly produce highly corrosive hydrofluoric acid when they meet water. Once the bonding layer between CPP and aluminum foil is corroded and the surface of aluminum foil is damaged, it will cause The CPP layer is separate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J135/06C09J123/12C09J123/02C09J11/06C09J11/08B32B7/12B32B15/085B32B15/088B32B15/20B32B33/00
CPCB32B7/12B32B15/085B32B15/088B32B15/20B32B33/00B32B2307/714C08L2201/08C08L2203/206C08L2205/035C09J11/06C09J11/08C09J123/02C09J123/12C09J135/06C08L23/12C08L23/02C08L53/02C08K5/29
Inventor 程跃陈滨王小明鲍晋珍庄志
Owner JIANGXI RUIERGY NEW MATERIAL TECH CO LTD
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