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Preparation method of lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive

A lithium-ion battery, epoxy adhesive technology, applied in the direction of adhesives, epoxy resin adhesives, non-polymer adhesive additives, etc. Strength, the effect of meeting diverse needs

Inactive Publication Date: 2019-03-12
广州市垠瀚能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two patents are similar to the direction of the researchers of the present invention, but the focus is on the sealing application under the electrolyte environment. The modified epoxy resin used mainly improves the electrolyte resistance of the epoxy resin, and the bonding performance is also improved. There is room for improvement; and the synthetic method of the modified resin used is relatively complicated, and the cost of self-synthesis or selection of commercially available products is relatively high

Method used

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  • Preparation method of lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive
  • Preparation method of lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) In the planetary stirring tank, add 45 parts by mass of E51 epoxy resin, 30 parts by mass of polyurethane modified epoxy resin (self-made), γ-(2,3-glycidoxy) propyltrimethoxysilane 1.5 parts by mass, 3.6 parts by mass of 1,4-butanediol diglycidyl ether, stirred at 45 rpm for 10 min.

[0039] (2) Add 22 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090Mpa at a stirring speed of 45rpm and a dispersing speed of 2000rpm to obtain component A.

[0040] (3) In the planetary stirring tank, add 60 parts by mass of modified amine curing agent, 5 parts by mass of aliphatic amine curing agent, 1 part by mass of imidazole curing agent, 2,4,6-tris(dimethylaminomethyl ) 1.5 parts by mass of phenol, stirred at 45 rpm for 10 min.

[0041] (4) Add 35 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090 Mpa at a stirring speed of 45 rpm and a dispersing speed of 2000 rpm to obtain component B.

[0042] (5) M...

Embodiment 2

[0044] (1) In the planetary stirring tank, add 30 parts by mass of E51 epoxy resin, 40 parts by mass of polyurethane modified epoxy resin (self-made), γ-(2,3-epoxypropoxy)propyltrimethoxysilane 1 part by mass, 2 parts by mass of 1,4-butanediol diglycidyl ether, stirred at 45 rpm for 10 min.

[0045] (2) Add 15 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090 Mpa at a stirring speed of 45 rpm and a dispersion speed of 2000 rpm to obtain component A.

[0046] (3) Add 50 parts by mass of a modified amine curing agent, 2 parts by mass of an aliphatic amine curing agent, and 1 part by mass of 2,4,6-tris(dimethylaminomethyl)phenol, and stir at 45 rpm for 10 minutes.

[0047] (4) Add 20 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090 Mpa at a stirring speed of 45 rpm and a dispersion speed of 2000 rpm to obtain component B.

[0048] (5) Mix the above-mentioned components A and B at room temperature with...

Embodiment 3

[0050] (1) Add 50 parts by mass of E51 epoxy resin, 20 parts by mass of polyurethane modified epoxy resin (self-made), 4 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 1, 8 mass parts of 4-butanediol diglycidyl ether were stirred at 45 rpm for 10 min.

[0051] (2) Add 35 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090 Mpa at a stirring speed of 45 rpm and a dispersion speed of 2000 rpm to obtain component A.

[0052] (3) Add 70 parts by mass of a modified amine curing agent, 8 parts by mass of an aliphatic amine curing agent, 2 parts by mass of an imidazole curing agent, and 3 parts by mass of 2,4,6-tris(dimethylaminomethyl)phenol, Stir at 45rpm for 10min.

[0053] (4) Add 40 parts by mass of active calcium carbonate, stir and disperse at a vacuum degree of 0.090 Mpa at a stirring speed of 45 rpm and a dispersion speed of 2000 rpm to obtain component B.

[0054] (5) Mix the above-mentioned components A and B at room temp...

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Abstract

The invention discloses a lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive and a preparation method thereof. The lithium ion battery electrolyte corrosion resistingdouble-component epoxy adhesive is composed of a component A and a component B, wherein the component A is composed of raw materials including, by weight part, 30-50 parts of bisphenol A type epoxy resin, 20-40 parts of polyurethane modified epoxy resin, 1-4 parts of coupling agent, 2-8 parts of active diluent and 15-35 parts of filler; the component B is composed of raw materials including, by weight part, 50-70 parts of modified amine hardener, 2- parts of amine hardener, 0-2 parts of imidazole hardener, 1-3 parts of accelerator and 20-40 parts of filler. The lithium ion battery electrolytecorrosion resisting double-component epoxy adhesive is stable in performing when in electrolytes, excellent in resistance to corrosion of lithium ion battery electrolytes, high in heat resistance andelectrochemical stability and capable of maintaining high strength in the electrolytes, thereby being applicable to bonding and sealing of parts exposed in electrolyte environment during lithium ion battery manufacturing and meeting the demands of lithium battery manufacturing industry on adhesive application diversity.

Description

technical field [0001] The invention belongs to the technical field of two-component epoxy adhesives, in particular to a two-component epoxy adhesive resistant to lithium-ion battery electrolyte, and the invention also relates to a two-component epoxy adhesive resistant to lithium-ion battery electrolyte Preparation. Background technique [0002] With the development of society, the rechargeable secondary lithium-ion battery has many advantages such as high energy density, high working voltage, long cycle life, no memory effect, green environmental protection, and flexible design of size and shape according to actual needs. More and more electrical equipment are selected as power sources, especially mobile electrical equipment, energy storage stations and new energy vehicles. The wide range of applications has been driving the rapid development of lithium-ion batteries. The research on positive and negative electrode materials has been going on, the electrolyte has been de...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/04C09J11/06
CPCC08K2003/265C08L2203/20C08L2205/025C08L2205/035C09J11/04C09J11/06C09J163/00C08L63/00C08K3/26C08K5/5435
Inventor 陈建浩李瀚明张伟强
Owner 广州市垠瀚能源科技有限公司
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