CN103468177A - Special-purpose acrylic glue of lithium battery and preparation method thereof - Google Patents
Special-purpose acrylic glue of lithium battery and preparation method thereof Download PDFInfo
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- CN103468177A CN103468177A CN2013103935340A CN201310393534A CN103468177A CN 103468177 A CN103468177 A CN 103468177A CN 2013103935340 A CN2013103935340 A CN 2013103935340A CN 201310393534 A CN201310393534 A CN 201310393534A CN 103468177 A CN103468177 A CN 103468177A
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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
The present invention relates to the lithium battery material technical field, relate in particular to special-purpose vinylformic acid glue of a kind of lithium cell and preparation method thereof.
Background technology
Along with the rise of lithium cell industry, can grow up with the auxiliary product of the stable rubber-type glue coexisted of lithium battery electrolytes as a kind of lithium cell product thereupon.
After the adhesive tape that domestic glue is made at present soaks electrolytic solution, lose viscosity because glue is soluble in lithium battery electrolytes, make adhesive tape can not effectively fix the metal strip of battery pole ear, cause battery short circuit, shorten the work-ing life of battery, have serious potential safety hazard.
In addition, existing glue non-refractory, in the time of 50 ℃, curing glue starts liquefaction, adhesive power reduces, and in the time of 100 ℃, liquefaction fully of glue, adhesive power has completely lost basically, now battery electrolyte will infiltrate the metal strip of lug, thereby cause battery short circuit, shorten the work-ing life of battery, have serious potential safety hazard.
Summary of the invention
The present invention provides special-purpose vinylformic acid glue of a kind of lithium cell and preparation method thereof for overcoming above-mentioned defect, the adhesive tape that uses this glue to make, can chemical reaction not occur after immersion electrolytic solution and lose viscosity, can keep good viscosity, thereby effectively fix the metal strip of lug, guarantee that electrolytic solution does not infiltrate the metal strip of lug, thereby extend the work-ing life of battery, eliminate safe hidden trouble.In addition, the highest high temperature that can anti-150 ℃ of this glue, guarantee that battery still can keep good working order under hot conditions, extends the work-ing life of battery, eliminates safe hidden trouble.
For achieving the above object, the present invention adopts following technical scheme.
The special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Wherein, described rubber is cis-1,4-polybutadiene rubber.
Preferably, the special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
More preferably, the special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Further preferably, the special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Still more preferably, the special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
The preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell comprises the following steps:
Steps A, by formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is reactor volume 2/3rds, starting to continue to stir and be heated to temperature of charge is 70-80 ℃; Wherein, the 40-60% that the consumption of this ethyl ester is the ethyl ester gross weight;
Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the 60-80% that the consumption of Diisopropyl azodicarboxylate is the Diisopropyl azodicarboxylate gross weight;
Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, the control time for adding is 0.5-1.5 hour;
Step D, after material dropping in dripping tank is complete, material in reactor is incubated to 1.5-3 hour;
Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 3-5 hour;
Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 35-45 ℃, material is poured out, get product.
Wherein, in described steps A, stirring velocity is 90-120r/min.
Wherein, controlling time for adding in described step C is 1-1.5 hour; In described step D, material in reactor is incubated to 1.5-2 hour.
Wherein, in described step e, by the material in reactor holding temperature, be 70-80 ℃.
Wherein, to be cooledly in described step F after 40-45 ℃, material is poured out.
Beneficial effect of the present invention is: special-purpose vinylformic acid glue of a kind of lithium cell of the present invention and preparation method thereof, the adhesive tape that uses this glue to make, can chemical reaction not occur after immersion electrolytic solution and lose viscosity, can keep good viscosity, thereby effectively fix the metal strip of lug, guarantee that electrolytic solution does not infiltrate the metal strip of lug, thereby extend the work-ing life of battery, eliminate safe hidden trouble.In addition, the highest high temperature that can anti-150 ℃ of this glue, guarantee that battery still can keep good working order under hot conditions, extends the work-ing life of battery, eliminates safe hidden trouble.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, and this is preferred embodiment of the present invention.
Embodiment 1.
The special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Wherein, described rubber is cis-1,4-polybutadiene rubber.
The preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell comprises the following steps:
Steps A, by the formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is 2/3rds of reactor volume, starting to continue to stir and be heated to temperature of charge is 70 ℃, and stirring velocity is 120r/min; Wherein, the consumption of this ethyl ester is 40% of ethyl ester gross weight; Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the consumption of Diisopropyl azodicarboxylate is 60% of Diisopropyl azodicarboxylate gross weight; Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, controlling time for adding is 0.5 hour; Step D, after material dropping in dripping tank is complete, by material in reactor insulation 3 hours; Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 3 hours, holding temperature is 80 ℃; Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 35 ℃, material is poured out, get product.Wherein, the method that detects and regulate solid content is:
Sampling is also carried out the sizing agent determination of solid content according to determination of solid content standard GB-T2793-1995, according to the result of measuring, uses toluene to be regulated, until solid content reaches fixed value.
The special-purpose vinylformic acid glue of a kind of lithium cell that the present embodiment makes, the highest high temperature that can anti-150 ℃ of this glue, infiltrate and can chemical reaction not occur and lose viscosity in battery electrolyte, and its viscosity is 3000cp, can effectively fix the metal strip of lug, prevent battery short circuit; Using the work-ing life of the lithium cell that this glue makes as binding agent is 5 years, the good and long service life of security.
Embodiment 2.
The special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Wherein, described rubber is ethylene-propylene rubber(EPR).
The preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell comprises the following steps:
Steps A, by the formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is 2/3rds of reactor volume, starting to continue to stir and be heated to temperature of charge is 75 ℃, and stirring velocity is 110r/min; Wherein, the consumption of this ethyl ester is 50% of ethyl ester gross weight; Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the consumption of Diisopropyl azodicarboxylate is 70% of Diisopropyl azodicarboxylate gross weight; Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, controlling time for adding is 0.8 hour; Step D, after material dropping in dripping tank is complete, by material in reactor insulation 2.5 hours; Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 3.5 hours, holding temperature is 77 ℃; Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 38 ℃, material is poured out, get product.Wherein, the method that detects and regulate solid content is:
Sampling is also carried out the sizing agent determination of solid content according to determination of solid content standard GB-T2793-1995, according to the result of measuring, uses toluene to be regulated, until solid content reaches fixed value.
The special-purpose vinylformic acid glue of a kind of lithium cell that the present embodiment makes, the highest high temperature that can anti-145 ℃ of this glue, infiltrate and can chemical reaction not occur and lose viscosity in battery electrolyte, and its viscosity is 2950cp, can effectively fix the metal strip of lug, prevent battery short circuit; Using the work-ing life of the lithium cell that this glue makes as binding agent is 5 years, the good and long service life of security.
Embodiment 3.
The special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Wherein, described rubber is styrene-butadiene rubber(SBR).
The preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell comprises the following steps:
Steps A, by the formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is 2/3rds of reactor volume, starting to continue to stir and be heated to temperature of charge is 78 ℃, and stirring velocity is 100r/min; Wherein, the consumption of this ethyl ester is 55% of ethyl ester gross weight; Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the consumption of Diisopropyl azodicarboxylate is 75% of Diisopropyl azodicarboxylate gross weight; Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, controlling time for adding is 1.2 hours; Step D, after material dropping in dripping tank is complete, by material in reactor insulation 2 hours; Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 4.5 hours, holding temperature is 72 ℃; Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 42 ℃, material is poured out, get product.Wherein, the method that detects and regulate solid content is:
Sampling is also carried out the sizing agent determination of solid content according to determination of solid content standard GB-T2793-1995, according to the result of measuring, uses toluene to be regulated, until solid content reaches fixed value.
The special-purpose vinylformic acid glue of a kind of lithium cell that the present embodiment makes, the highest high temperature that can anti-148 ℃ of this glue, infiltrate and can chemical reaction not occur and lose viscosity in battery electrolyte, and its viscosity is 2900cp, can effectively fix the metal strip of lug, prevent battery short circuit; Using the work-ing life of the lithium cell that this glue makes as binding agent is 5 years, the good and long service life of security.
Embodiment 4.
The special-purpose vinylformic acid glue of a kind of lithium cell comprises that the raw material of following weight percent forms:
Wherein, described rubber is polyisoprene rubber.
The preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell comprises the following steps:
Steps A, by the formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is 2/3rds of reactor volume, starting to continue to stir and be heated to temperature of charge is 80 ℃, and stirring velocity is 90r/min; Wherein, the consumption of this ethyl ester is 45% of ethyl ester gross weight; Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the consumption of Diisopropyl azodicarboxylate is 65% of Diisopropyl azodicarboxylate gross weight; Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, controlling time for adding is 1.5 hours; Step D, after material dropping in dripping tank is complete, by material in reactor insulation 1.5 hours; Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 5 hours, holding temperature is 70 ℃; Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 45 ℃, material is poured out, get product.Wherein, the method that detects and regulate solid content is:
Sampling is also carried out the sizing agent determination of solid content according to determination of solid content standard GB-T2793-1995, according to the result of measuring, uses toluene to be regulated, until solid content reaches fixed value.
The special-purpose vinylformic acid glue of a kind of lithium cell that the present embodiment makes, the highest high temperature that can anti-149 ℃ of this glue, infiltrate and can chemical reaction not occur and lose viscosity in battery electrolyte, and its viscosity is 2850cp, can effectively fix the metal strip of lug, prevent battery short circuit; Using the work-ing life of the lithium cell that this glue makes as binding agent is 5 years, the good and long service life of security.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although with reference to preferred embodiment, the present invention has been done to explain; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.
Claims (10)
1. the special-purpose vinylformic acid glue of a lithium cell, it is characterized in that: the raw material that comprises following weight percent forms:
Isooctyl acrylate monomer 20-40%
Butyl acrylate 5-10%
Vinyl acetate between to for plastic 5-10%
Vinylformic acid 0.5-3%
Rubber 5-10%
Pentaerythritol acrylate trimethyl 1-5%
Diisopropyl azodicarboxylate 0.5-2%
Ethyl ester 40-60%
Wherein, described rubber is cis-1,4-polybutadiene rubber.
2. the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 1, it is characterized in that: the raw material that comprises following weight percent forms:
Isooctyl acrylate monomer 20-35%
Butyl acrylate 5-9%
Vinyl acetate between to for plastic 5-9%
Vinylformic acid 0.5-2.5%
Rubber 5-9%
Pentaerythritol acrylate trimethyl 1-4%
Diisopropyl azodicarboxylate 0.5-1.8%
Ethyl ester 45-60%.
3. the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 2, it is characterized in that: the raw material that comprises following weight percent forms:
Isooctyl acrylate monomer 20-30%
Butyl acrylate 5-8%
Vinyl acetate between to for plastic 5-8%
Vinylformic acid 0.5-2%
Rubber 5-8%
Pentaerythritol acrylate trimethyl 1-3%
Diisopropyl azodicarboxylate 0.5-1.6%
Ethyl ester 50-60%.
4. the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 3, it is characterized in that: the raw material that comprises following weight percent forms:
Isooctyl acrylate monomer 20-25%
Butyl acrylate 5-7%
Vinyl acetate between to for plastic 5-7%
Vinylformic acid 0.5-1%
Rubber 5-7%
Pentaerythritol acrylate trimethyl 1-2%
Diisopropyl azodicarboxylate 0.5-1.4%
Ethyl ester 55-60%.
5. the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 4, it is characterized in that: the raw material that comprises following weight percent forms:
Isooctyl acrylate monomer 20-25%
Butyl acrylate 6-7%
Vinyl acetate between to for plastic 6-7%
Vinylformic acid 0.5-1%
Rubber 6-7%
Pentaerythritol acrylate trimethyl 1-2%
Diisopropyl azodicarboxylate 0.5-1.2%
Ethyl ester 55-60%.
6. the preparation method of the special-purpose vinylformic acid glue of the described a kind of lithium cell of claim 1-5 any one is characterized in that: comprise the following steps:
Steps A, by formula by Isooctyl acrylate monomer, butyl acrylate, vinyl acetate between to for plastic, vinylformic acid, the disposable input reactor of ethyl ester, add-on is reactor volume 2/3rds, starting to continue to stir and be heated to temperature of charge is 70-80 ℃; Wherein, the 40-60% that the consumption of this ethyl ester is the ethyl ester gross weight;
Step B, after being uniformly mixed, pentaerythritol acrylate trimethyl, Diisopropyl azodicarboxylate and residue ethyl ester add the dropping tank; Wherein, the 60-80% that the consumption of Diisopropyl azodicarboxylate is the Diisopropyl azodicarboxylate gross weight;
Step C, the material of the dropping tank of step B is splashed in reactor, continue to stir material, the control time for adding is 0.5-1.5 hour;
Step D, after material dropping in dripping tank is complete, material in reactor is incubated to 1.5-3 hour;
Step e, while stirring by rubber, Diisopropyl azodicarboxylate is disposable adds in reactor for residue, after stirring, makes to be incubated 3-5 hour;
Step F, detection and regulate solid content and reach prescribed value after, material in reactor is carried out cooling, to be cooledly after 35-45 ℃, material is poured out, get product.
7. the preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 6, it is characterized in that: in described steps A, stirring velocity is 90-120r/min.
8. the preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 6, it is characterized in that: controlling time for adding in described step C is 1-1.5 hour; In described step D, material in reactor is incubated to 1.5-2 hour.
9. the preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 6, is characterized in that: in described step e, by the material in reactor holding temperature, be 70-80 ℃.
10. the preparation method of the special-purpose vinylformic acid glue of a kind of lithium cell according to claim 6 is characterized in that: to be cooledly in described step F after 40-45 ℃, material is poured out.
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| CN112531214A (en) * | 2019-08-30 | 2021-03-19 | 中科邦汇新材料科技(东莞)有限公司 | Novel lithium battery forming and gluing process |
| CN112646515A (en) * | 2020-12-22 | 2021-04-13 | 深圳市益达兴科技股份有限公司 | High-temperature-resistant solvent type acrylate pressure-sensitive adhesive and preparation method thereof |
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Denomination of invention: Special-purpose acrylic glue of lithium battery and preparation method thereof Effective date of registration: 20200407 Granted publication date: 20160622 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: DONGGUAN AOZON ELECTRONIC MATERIAL Co.,Ltd. Registration number: Y2020980001313 |
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Effective date of registration: 20200914 Address after: 512000 Nanxiong City Pearl Ji industrial park, Shaoguan, Guangdong Patentee after: AOZHONG new material technology (Shaoguan) Co., Ltd Address before: 523000 Guangdong province Dongguan city Shijie Town Water Village Road No. 107 building first Zhengwen Patentee before: DONGGUAN AOZON ELECTRONIC MATERIAL Co.,Ltd. |