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Special-purpose acrylic glue of lithium battery and preparation method thereof

An acrylic glue, lithium battery technology, applied in the direction of adhesives, conjugated diene adhesives, adhesive types, etc., can solve the problems of reduced adhesion, shortened battery life, safety hazards, etc., to achieve good viscosity, The effect of prolonging service life and eliminating safety hazards

Active Publication Date: 2013-12-25
澳中新材料科技(韶关)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, after the adhesive tape made of domestic glue is soaked in the electrolyte, it loses its viscosity because the glue is easily soluble in the lithium battery electrolyte, so that the adhesive tape cannot effectively fix the metal belt of the battery tab, resulting in a short circuit of the battery and shortening the service life of the battery. serious safety hazard
[0004] In addition, the existing glue is not resistant to high temperature. At 50°C, the cured glue begins to liquefy and the adhesion decreases. At 100°C, the glue has completely liquefied and the adhesion has basically been completely lost. At this time, the battery electrolysis The liquid will infiltrate the metal strip of the tab, which will cause a short circuit of the battery, shorten the service life of the battery, and pose a serious safety hazard

Method used

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  • Special-purpose acrylic glue of lithium battery and preparation method thereof
  • Special-purpose acrylic glue of lithium battery and preparation method thereof
  • Special-purpose acrylic glue of lithium battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A special acrylic glue for lithium batteries, including the following raw materials in weight percentage:

[0035]

[0036] Wherein, the rubber is butadiene rubber.

[0037] A preparation method of special acrylic glue for lithium battery includes the following steps:

[0038] Step A. Put isooctyl acrylate, butyl acrylate, vinyl acetate, acrylic acid, and ethyl ester into the reaction kettle at one time according to the formula, and add two-thirds of the volume of the reaction kettle. Start stirring continuously and heat to the material temperature. 70°C, the stirring speed is 120r / min; wherein the amount of the ethyl ester is 40% of the total weight of the ethyl ester; Step B, stir and mix pentaerythritol trimethacrylate, azobisisobutyronitrile and the remaining ethyl ester evenly Then add the dripping tank; wherein the amount of azobisisobutyronitrile is 60% of the total weight of azobisisobutyronitrile; step C, drop the materials in the dripping tank of step B into the rea...

Embodiment 2

[0042] A special acrylic glue for lithium batteries, including the following raw materials in weight percentage:

[0043]

[0044]

[0045] Wherein, the rubber is ethylene propylene rubber.

[0046] A preparation method of special acrylic glue for lithium battery includes the following steps:

[0047] Step A. Put isooctyl acrylate, butyl acrylate, vinyl acetate, acrylic acid, and ethyl ester into the reaction kettle at one time according to the formula, and add two-thirds of the volume of the reaction kettle. Start stirring continuously and heat to the material temperature. 75°C, the stirring speed is 110r / min; wherein the amount of the ethyl ester is 50% of the total weight of the ethyl ester; Step B, stir and mix the pentaerythritol trimethacrylate, azobisisobutyronitrile and the remaining ethyl ester evenly Then add the dripping tank; wherein, the amount of azobisisobutyronitrile is 70% of the total weight of azobisisobutyronitrile; step C, drop the materials in the dripping tank...

Embodiment 3

[0051] A special acrylic glue for lithium batteries, including the following raw materials in weight percentage:

[0052]

[0053] Wherein, the rubber is styrene butadiene rubber.

[0054] A preparation method of special acrylic glue for lithium battery includes the following steps:

[0055] Step A. Put isooctyl acrylate, butyl acrylate, vinyl acetate, acrylic acid, and ethyl ester into the reaction kettle at one time according to the formula, and add two-thirds of the volume of the reaction kettle. Start stirring continuously and heat to the material temperature. 78°C, the stirring speed is 100r / min; wherein the amount of the ethyl ester is 55% of the total weight of the ethyl ester; Step B, stir and mix pentaerythritol trimethacrylate, azobisisobutyronitrile and the remaining ethyl ester evenly Then add the dripping tank; wherein the amount of azobisisobutyronitrile is 75% of the total weight of azobisisobutyronitrile; step C, drop the materials in the dripping tank of step B into...

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Abstract

The invention relates to the technical field of lithium battery materials, and in particular relates to special-purpose acrylic glue of a lithium battery and a preparation method thereof. The special-purpose acrylic glue of the lithium battery comprises the following materials in percentage by weight: 20%-40% of iso-octyl acrylate, 5%-10% of butyl acrylate, 5%-10% of vinyl acetate, 0.5%-3% of acrylic acid, 5%-10% of rubber, 1%-5% of pentaerythritol trimethyl acrylate, 0.5%-2% of azodiisobutyronitrile and 40%-60% of ethyl ester. An adhesive tape which is prepared by using the glue does not lose viscosity due to chemical reaction after being soaked in electrolyte, and can keep good viscosity, so that a metal strap of a lug can be effectively fixed, and the metal strap of the lug is enabled to be not infiltrated by the electrolyte, thereby prolonging the service life of the battery and eliminating potential safety hazards. Besides, the glue can resist a high temperature of 150 DEG C at most, so that the battery can keeping a good working state under the high-temperature condition, the service life of the battery is prolonged, and the potential safety hazards are eliminated.

Description

Technical field [0001] The invention relates to the technical field of lithium battery materials, in particular to a special acrylic glue for lithium batteries and a preparation method thereof. Background technique [0002] With the rise of the lithium battery industry, rubber-type glue that can stably coexist with lithium battery electrolyte has developed as an accessory product of lithium battery products. [0003] At present, the adhesive tape made of domestic glue is soaked in the electrolyte, because the glue is easily soluble in the lithium battery electrolyte and loses its viscosity, so that the tape cannot effectively fix the metal band of the battery lug, resulting in a short circuit of the battery and shortening the battery life. Serious security risks. [0004] In addition, the existing glue is not resistant to high temperature. At 50°C, the cured glue begins to liquefy and the adhesion is reduced. At 100°C, the glue has been completely liquefied and the adhesion is basic...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J109/00C08F220/18C08F218/08C08F220/06C08F222/14
Inventor 郭培钧王宜金陆金亮黄军华尹嘉菲
Owner 澳中新材料科技(韶关)有限公司
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