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Preparation method of polyurethane laminating adhesive for lithium battery

A polyurethane and lithium battery technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve problems such as poor hydrolysis resistance, normal performance, and poor adhesion of metal composites

Inactive Publication Date: 2020-05-29
广东新辉化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem solved by the present invention is to propose a preparation method of polyurethane laminating adhesive for lithium batteries, which solves the problems of low solid content, poor wetting, poor hydrolysis resistance, no heat and humidity resistance, and short open period of ordinary solvent-based polyurethane laminating adhesive. , and defects such as poor adhesion with metal composites are not conducive to the normal performance of lithium batteries in storage and use, so as to meet the needs of composites with various structural substrates

Method used

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  • Preparation method of polyurethane laminating adhesive for lithium battery
  • Preparation method of polyurethane laminating adhesive for lithium battery

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Effect test

Embodiment 1

[0021] A preparation method of lithium battery polyurethane laminating adhesive, a main agent of lithium battery polyurethane laminating adhesive is mainly made of the following raw material components in mass ratio:

[0022]

[0023] Its specific preparation method is as follows:

[0024] 1). The synthesis of anionic water-soluble polyurethane, the synthesis of anionic water-soluble polyurethane, is to prepare NCO-terminal prepolymer by reacting polyethylene polyol and 2,4-diphenylmethane diisocyanate; then prepare NCO-terminal prepolymer The body uses 2,2-dimethylolpropionic acid to chain extend and end-block to synthesize a carboxyl-containing oligomer; finally, add the bottom polymer to the aqueous solution of the salt-forming agent for dispersion to obtain anionic water-soluble polyurethane. When preparing the prepolymer, according to the type of diisocyanate and polyetherimide selected, it should be added in proportion to the chemical formula, and it should be fully s...

Embodiment 2

[0030] A preparation method of lithium battery polyurethane laminating adhesive, a main agent of lithium battery polyurethane laminating adhesive is mainly made of the following raw material components in mass ratio:

[0031]

[0032] Its specific preparation method is as follows:

[0033] 1). The synthesis of anionic water-soluble polyurethane, the synthesis of anionic water-soluble polyurethane, is to prepare NCO terminal prepolymer by reacting polyethylene polyol and 2,4-toluene diisocyanate; then make NCO terminal prepolymer with 2 , 2-Dimethylolpropionic acid chain extension and end-capping to synthesize oligomers containing carboxyl groups; finally, add the bottom polymer to the aqueous solution of the salt-forming agent for dispersion to obtain anionic water-soluble polyurethane. When preparing the prepolymer, according to the type of diisocyanate and polyetherimide selected, it should be added in proportion to the chemical formula, and it should be fully stirred withi...

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Abstract

The invention discloses a preparation method of a polyurethane laminating adhesive for a lithium battery, and belongs to the field of composite flexible packaging. The polyurethane laminating adhesiveis prepared by compounding water-soluble anionic polyurethane and water-soluble cationic polyurethane, wherein the water-soluble anionic polyurethane is formed by mixing diisocyanate, polyethylene polyol and a salt-forming agent, and the water-soluble cationic polyurethane is formed by mixing diisocyanate, polyether imide, vegetable oil modified polyol and a salt-forming agent. Most importantly,the laminating adhesive can keep the good properties of a lithium battery at a high temperature, can seal various lithium ion electrolytes, and is an environment-friendly product, which is simple in preparation method and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of laminating adhesives in the field of composite flexible packaging, and in particular relates to a preparation method of polyurethane laminating adhesives for lithium batteries. Background technique [0002] Laminating glue refers to a kind of glue that combines BOPP film on paper. Including water-based laminating adhesive and oil-based laminating adhesive. At present, oil-based laminating adhesives are mainly used in China. With the improvement of national environmental protection laws and regulations and the gradual enhancement of people's awareness of environmental protection, water-based solvent-based products have become the general trend. In the current situation of the domestic market, water-based laminating adhesive laminating has become the mainstream of the market. [0003] With the rapid development of printing technology, the application fields of lamination technology are becoming more and ...

Claims

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Application Information

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IPC IPC(8): C09J175/04C08G18/65C08G18/62C08G18/34C08G18/10C08G18/64C08G18/36
CPCC08G18/10C08G18/348C08G18/36C08G18/6204C08G18/6438C08G18/6541C08G18/6547C08L2205/025C09J175/04C08L75/04
Inventor 欧华新
Owner 广东新辉化学有限公司
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