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Lithium battery electrolyte-proof flame-retardant adhesive, preparation method thereof, and adhesive tape

A technology of electrolyte and flame retardant glue, which is applied in the manufacture of electrolyte batteries, adhesives, adhesive additives, etc., can solve the problems of poor electrolyte resistance and cannot meet application requirements, and achieve the effect of enhancing flame retardant performance.

Active Publication Date: 2019-02-26
佛山市顺德区永创翔亿电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As lithium batteries require thinner and thinner tapes for assembly, the acrylic pressure-sensitive adhesive coating becomes thinner, and the electrolyte resistance is worse, which cannot meet the application requirements.

Method used

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  • Lithium battery electrolyte-proof flame-retardant adhesive, preparation method thereof, and adhesive tape
  • Lithium battery electrolyte-proof flame-retardant adhesive, preparation method thereof, and adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, which is an electrolyte-resistant flame-retardant adhesive and an electrolyte-resistant flame-retardant adhesive tape for lithium batteries, is prepared by the following steps. Step 1 synthesizes an electrolyte-resistant flame-retardant adhesive. 60 parts of stearyl acrylate (SA), 6 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 2 parts of acrylonitrile (AN), 5 parts of diethyl vinyl phosphate , 0.02 parts of free radical initiator tert-butyl peroxymaleate (TBMA), 0.12 parts of ferric chloride, 0.25 parts of triphenylphosphine and 100 parts of toluene are mixed, and nitrogen deoxygenation is performed for 60 minutes , the temperature was controlled at 90°C, and the reverse atom transfer radical polymerization (R-ARTP) polymerization reaction was carried out under the protection of nitrogen for 8 hours. to 30°C, add 6 parts of epoxidized polybutadiene (epoxy value is 0.54 mol / 100g, number average molecular weight is 2066) and 0.1 part of curin...

Embodiment 2

[0030] Embodiment 2, which is an electrolyte-resistant flame-retardant adhesive and an electrolyte-resistant flame-retardant adhesive tape for lithium batteries, is prepared by the following steps. Step 1 synthesizes an electrolyte-resistant flame-retardant adhesive. 50 parts of stearyl acrylate (SA), 3 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 1 part of acrylonitrile (AN), 5 parts of vinyl dimethyl phosphate , 0.07 parts of free radical initiator tert-butyl peroxymaleate (TBMA), 0.1 part of ferric chloride, 0.2 parts of triphenylphosphine and 100 parts of ethyl acetate were mixed, and nitrogen deoxygenation was carried out for 50 Minutes later, the temperature was controlled at 80°C, and the reverse atom transfer radical polymerization (R-ARTP) polymerization reaction was carried out under nitrogen protection for 15 hours. The number average molecular weight (Mn) was controlled to 254400, and the molecular weight polydispersity coefficient was controlled to ...

Embodiment 3

[0033] Embodiment 3, which is an electrolyte-resistant flame-retardant adhesive and an electrolyte-resistant flame-retardant adhesive tape for lithium batteries, is prepared by the following steps. Step 1 synthesizes an electrolyte-resistant flame-retardant adhesive. 45 parts of stearyl acrylate (SA), 3 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 1 part of acrylonitrile (AN), 6 parts of diethyl vinyl phosphate , 0.1 part of free radical initiator tert-butyl peroxymaleate (TBMA), 0.2 part of ferric chloride, 0.4 part of triphenylphosphine and 80 parts of ethyl acetate were mixed, and nitrogen deoxygenation was carried out for 80 Minutes later, the temperature was controlled at 85°C, and the reverse atom transfer radical polymerization (R-ARTP) polymerization reaction was carried out under the protection of nitrogen for 10 hours. The temperature is lowered to 20°C, and then 8 parts of epoxidized polybutadiene (epoxy value is 0.54 mol / 100g, number average molecul...

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Abstract

The invention relates to a lithium battery adhesive tape, and more specifically relates to a lithium battery special-purpose electrolyte-proof flame-retardant adhesive, a preparation method thereof, and an electrolyte-proof flame-retardant adhesive tape. The lithium battery electrolyte-proof flame-retardant adhesive comprises, by mass, 10 to 60 parts of octadecyl acrylate, 1 to 10 parts of 4-methacryloxyethyl trimellitic anhydride, 1 to 5 parts of acrylonitrile, 1 to 15 parts of a phosphorus-containing acrylate monomer, 0.001 to 0.5 part of radical initiator tertial butyl peroxymaleic acid, 0.001 to 1 part of ferric trichloride, 0.01 to 2 parts of triphenylphosphine, 50 to 250 parts of an organic solvent, 1 to 10 parts of epoxidized polybutadiene, and 0.1 to 1 part of a curing accelerator.The preparation method is capable of solving a problem in the prior art that the electrolyte resistance of conventional acrylate pressure-sensitive adhesive is poor. According to the preparation method, the electrolyte resistance of the adhesive tape at high temperature environment is improved; and the flame-retardant function monomer and flame-retardant film are introduced, so that the flame resistance of the acrylate pressure-sensitive adhesive tape is improved further.

Description

technical field [0001] The invention relates to an adhesive tape for lithium batteries, in particular to a special electrolyte-resistant flame-retardant adhesive for lithium batteries, a preparation method and an electrolyte-resistant flame-retardant adhesive tape. Background technique [0002] In the assembly and production process of lithium-ion batteries, special tapes are generally used to fix, insulate and protect the cells, tabs and termination parts of lithium-ion batteries. This special adhesive tape for lithium batteries usually uses a polymer film as the base material, and on this basis, it is coated with a special glue resistant to lithium battery electrolyte, with a thickness of 5 to 50 mm. Lithium battery special tape usually has good high tensile strength, good viscosity, no adhesive residue when the tape is removed, high temperature resistance of 100°C, electrolyte resistance (pH value: 5.5-6.5), high electrical insulation, and flame retardant Good performanc...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J11/08C09J7/25C09J7/20C09J7/38C08F220/18C08F220/32C08F220/44C08F230/02H01M10/058
CPCC08F220/18C09J11/08C09J133/08C09J2203/33C09J2467/006C09J7/201C09J7/25C09J7/385C08F220/1818C09J2301/122C09J2301/30C09J2301/302C09J2301/408H01M10/058C08L47/00C08F220/32C08F220/44C08F230/02Y02E60/10Y02P70/50
Inventor 叶志斌曾丽娟
Owner 佛山市顺德区永创翔亿电子材料有限公司
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