Electrolyte-resistant rubber solution as well as preparation method and electrolyte-resistant rubber tape thereof

A technology of rubber glue and electrolyte, which is applied in the direction of rubber derivative glue, adhesive, film/sheet adhesive, etc., can solve problems such as potential safety hazards, loss of viscosity, corrosion and penetration of electrolyte, etc., to improve bonding performance, Effect of improving viscosity and improving initial adhesive force

Active Publication Date: 2018-06-22
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common glues for terminating tapes on the market are mainly acrylic glues. Because the electrolyte is a strong polar solvent, the tape will be corroded and penetrated by the electrolyte after long-term soaking in the electrolyte, thus losing its viscosity. lead to safety hazards

Method used

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  • Electrolyte-resistant rubber solution as well as preparation method and electrolyte-resistant rubber tape thereof
  • Electrolyte-resistant rubber solution as well as preparation method and electrolyte-resistant rubber tape thereof
  • Electrolyte-resistant rubber solution as well as preparation method and electrolyte-resistant rubber tape thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of electrolyte-resistant rubber glue, comprising the following steps: (1) 50 parts by weight of polyisobutylene rubber A, 100 parts by weight of polyisobutylene rubber B, 40 parts of epoxidized polyisobutylene rubber, 5 parts of amino-terminated liquid Nitrile rubber and 10 parts of terpene resin are dissolved in 500 parts of organic solvent at a temperature of 70 ° C to dissolve it into a uniform and bright glue;

[0032] (2) Add 20 parts of pigments into the glue in the step (1), and stir evenly to prepare the electrolyte-resistant rubber glue.

[0033] The weight average molecular weight of the polyisobutylene rubber A is 400,000; the weight average molecular weight of the polyisobutylene rubber B is 95,000.

[0034] The epoxidized polyisobutylene rubber is prepared by oxidation of polyisobutylene rubber with a weight average molecular weight of 1000 by organic acid.

[0035] The organic acid is acetic acid.

[0036] The molar ratio of the doub...

Embodiment 2

[0042] A preparation method of electrolyte-resistant rubber glue, comprising the following steps: (1) 45 parts by weight of polyisobutylene rubber A, 102 parts by weight of polyisobutylene rubber B, 48 parts of epoxidized polyisobutylene rubber, 4 parts of amino-terminated liquid Nitrile rubber and 20 parts of terpene resin are dissolved in 400 parts of organic solvent at 70°C to form uniform yellowish glue;

[0043] (2) Add 30 parts of pigments into the glue in the step (1), and stir evenly to prepare the electrolyte-resistant rubber glue.

[0044] The weight average molecular weight of the polyisobutylene rubber A is 395,000; the weight average molecular weight of the polyisobutylene rubber B is 98,000.

[0045] The epoxidized polyisobutylene rubber is prepared by oxidation of polyisobutylene rubber with a weight average molecular weight of 1200 by organic acid.

[0046] Described organic acid is peroxybenzoic acid.

[0047] The molar ratio of the double bond in the epoxid...

Embodiment 3

[0053] A preparation method of electrolyte-resistant rubber glue, comprising the following steps: (1) 30 parts by weight of polyisobutylene rubber A, 150 parts by weight of polyisobutylene rubber B, 20 parts of epoxidized polyisobutylene rubber, 1 part of amino-terminated liquid Nitrile rubber and 5 parts of terpene resin are dissolved in 300 parts of organic solvent at 60°C to form uniform yellowish glue;

[0054] The weight average molecular weight of the polyisobutylene rubber A is 420,000; the weight average molecular weight of the polyisobutylene rubber B is 90,000.

[0055] The epoxidized polyisobutylene rubber is prepared from polyisobutylene rubber with a weight average molecular weight of 500 through organic acid oxidation.

[0056] Described organic acid is m-chloroperoxybenzoic acid.

[0057] The molar ratio of the double bond in the epoxidized polyisobutylene rubber to the organic acid is 1:0.9.

[0058] The softening point of the terpene resin is 100° C., and th...

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Abstract

The invention relates to the technical field of rubber, in particular to an electrolyte-resistant rubber solution as well as a preparation method and an electrolyte-resistant rubber tape thereof. Theelectrolyte-resistant rubber solution comprises the following raw materials in parts by weight: 100-230 parts of polyisobutylene rubber, 20-60 parts of epoxy polyisobutylene rubber, 1-10 parts of amino-terminated liquid nitrile rubber, 5-30 parts of a terpene resin, 0-50 parts of a pigment and 300-600 parts of an organic solvent. According to the electrolyte-resistant rubber solution which is provided by the invention, the polyisobutylene rubber which is excellent in chemical resistance is adopted as a main material, the epoxy polyisobutylene rubber and the amino-terminated liquid nitrile rubber are used, and through cross-linking reactions of the epoxy polyisobutylene rubber and the amino-terminated liquid nitrile rubber,not only the bonding property of the electrolyte-resistant rubber solution provided by the invention with aluminum foil in a lithium battery is improved, but also the electrolyte corrosion resistance of the electrolyte-resistant rubber solution is improved.

Description

technical field [0001] The invention relates to the technical field of adhesive tapes, in particular to an electrolyte-resistant rubber glue, a preparation method thereof, and an electrolyte-resistant rubber adhesive tape. Background technique [0002] Lithium-ion batteries have been widely used in many fields in daily life, such as mobile phones, notebook computers, electric vehicles, etc., because of their advantages such as high output voltage, high energy density, no memory effect, and long cycle life. However, as an energy storage module, a lithium battery is composed of positive electrodes, negative electrodes and separators. Due to potential defects or improper use of the product itself, it will cause a lot of property losses to individuals and related companies. During the manufacturing process of lithium batteries, it is necessary to wind the positive electrode sheet, separator and negative electrode sheet into a cell, and then inject the electrolyte. The tabs of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/22C09J115/00C09J109/02C09J157/02C09J7/20
CPCC08L2203/20C08L2205/025C08L2205/035C09J123/22C08L23/22C08L15/00C08L9/02C08L57/02
Inventor 李毅辉庄永剑薛萌陆金亮王宜金王杰
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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