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Battery flame-retardant adhesive and preparation method and composite flame-retardant insulating blue film for battery

A flame retardant adhesive and battery technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc. The effect of creep resistance

Active Publication Date: 2019-02-12
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

At present, power batteries are generally packaged with ordinary PET insulating film, which is characterized by good insulation and good adhesion, but has the disadvantage that the flame retardant cannot reach the flame retardant UL-94-V-0 level.

Method used

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  • Battery flame-retardant adhesive and preparation method and composite flame-retardant insulating blue film for battery
  • Battery flame-retardant adhesive and preparation method and composite flame-retardant insulating blue film for battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, which is a power battery flame retardant adhesive and a composite layer flame retardant insulation protection blue film for power batteries, is prepared by the following steps, step 1 synthesizing the power battery flame retardant adhesive.

[0025] 50 parts of 2-ethylhexyl acrylate (2-EHA), 5 parts of methyl acrylate (MA), 2 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 5 parts Butyl acrylate (BA), 8 parts of diethyl vinyl phosphate, 0.03 parts of free radical initiator tert-butyl peroxymaleate (TBMA), 0.06 parts of ferric chloride, 0.10 parts of triphenyl After the base phosphorus and 100 parts of toluene were mixed, nitrogen deoxygenation was performed for 30 minutes, and 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 6 hours, and the number average molecular weight ( Mn) is controlled at 302300, and the mo...

Embodiment 2

[0030] Embodiment 2, which is a flame-retardant adhesive for a power battery and a composite flame-retardant insulating protective blue film for a power battery, is prepared by the following steps. Step 1 synthesizes a flame-retardant adhesive for a power battery.

[0031]60 parts of 2-ethylhexyl acrylate (2-EHA), 7 parts of methyl acrylate (MA), 3 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 15 parts Butyl acrylate (BA), 10 parts of diethyl vinyl phosphate, 0.06 parts of free radical initiator tert-butyl peroxymaleate (TBMA), 0.02 parts of ferric chloride, 0.1 parts of triphenyl After the base phosphorus and 100 parts of ethyl acetate were mixed, nitrogen deoxygenation was carried out for 80 minutes, and the temperature was controlled at 80°C, and the reverse atom transfer radical polymerization (R-ARTP) polymerization reaction was carried out under the protection of nitrogen for 12 hours, and the number average The molecular weight (Mn) is controlled to 21250...

Embodiment 3

[0036] Embodiment 3, which is a flame-retardant adhesive for a power battery and a composite layer flame-retardant insulating protective blue film for a power battery, is prepared by the following steps. Step 1 synthesizes a flame-retardant adhesive for a power battery.

[0037] 55 parts of 2-ethylhexyl acrylate (2-EHA), 9 parts of methyl acrylate (MA), 5 parts of 4-methacryloxyethyl trimellitic anhydride (4-META), 10 parts Butyl acrylate (BA), 8 parts of diethyl vinyl phosphate, 0.1 part of free radical initiator tert-butyl peroxymaleate (TBMA), 0.1 part of ferric chloride, 0.2 parts of triphenyl After the base phosphorus and 80 parts of ethyl acetate were mixed, nitrogen deoxygenation was performed for 100 minutes, and 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 12 hours, and the number average The molecular weight (Mn) is controlled at 19870...

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PUM

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Abstract

The invention relates to the field of safety protection of power batteries, in particular to a battery flame-retardant adhesive, a preparation method and a composite flame-retardant insulating blue film for a battery. The battery flame-retardant adhesive comprises 20 to 60 parts of 2-ethylhexyl acrylate, 1 to 10 parts of methyl acrylate, 1 to 5 parts of 4-methacryloxyethyl trimellitic anhydride, 1to 15 parts of butyl acrylate, 1 to 10 parts of diethyl vinylphosphonate, 0.001 to 0.5 part of a radical initiator tert-butyl monoperoxymaleate, 0.001 to 1 part of ferric chloride, 0.01 to 2 parts oftriphenylphosphine, 50 to 250 parts of an organic solvent, 0.1 to 2 parts of trimethylolpropane triglycidyl ether, 0.01 to 0.5 part of a curing accelerator and 1 to 30 parts of a dye. According to the battery flame-retardant adhesive disclosed by the invention, the problem that the creep property of the traditional acrylate pressure sensitive adhesive is poor is solved. Under the action of the catalyst, the poly-functional epoxy functional group is chemically cross-linked with the anhydride of the anhydride-modified acrylic flame-retardant pressure-sensitive adhesive to form a three-dimensional crosslinked network, so as to obtain high cohesive force and improve the creep resistance of a protective film. The battery flame-retardant adhesive disclosed by the invention enhances the flame retardant properties of an acrylate pressure sensitive protective film.

Description

technical field [0001] The invention relates to the field of power battery safety protection, in particular to a battery flame-retardant adhesive, a preparation method and a composite flame-retardant insulating blue film for batteries. Background technique [0002] During the assembly and production process of the power battery, a special protective film is generally used to insulate and protect the casing of the power battery. This kind of special protective film for power batteries usually uses polymer PET film as the base material, and special glue is coated on this basis, with a total thickness of 80-120 mm. The special protective film for power batteries usually has good anti-warping properties, good viscosity, creep resistance, no residual glue when the protective film is removed, high electrical insulation, and good flame retardancy. Acrylic special protective film is currently the most widely used pressure-sensitive adhesive, with good viscosity, excellent weather r...

Claims

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Application Information

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IPC IPC(8): C09J133/14C08F220/18C08F220/14C08F220/30C08F230/02C09J7/29C09J7/30C09J7/25
CPCC08F220/18C08F220/1806C08F2438/01C09J7/29C09J7/30C09J133/064C09J2203/33C09J2467/006C08F220/14C08F220/1804C08F220/303C08F230/02
Inventor 叶志斌曾丽娟李俊
Owner 佛山市顺德区永创翔亿电子材料有限公司