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Design method of curing system of lithium battery aluminum-plastic film adhesive

A design method, aluminum-plastic film technology, applied in the direction of adhesives, adhesive types, battery pack components, etc., can solve the problems of small performance improvement, limited bonding efficiency, etc.

Inactive Publication Date: 2020-12-08
成都科成精化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN106459703A patent adopts modified polyolefin or modified chlorinated polyolefin resin, curing agent adopts glycidyl amine type epoxy resin and glycidyl ether type epoxy resin, what adopts is epoxy system, and there is certain difference in bonding efficiency. limitations
[0006] Using the current commercially available solution, or the other two patented methods mentioned in this article, there are certain deficiencies in the bonding effect and efficiency, and there is room for improvement in the bonding, especially in the field of aluminum-plastic film for power batteries with higher requirements. Seemingly small performance improvements can provide better usage effects

Method used

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  • Design method of curing system of lithium battery aluminum-plastic film adhesive

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0031] 100 parts of Toyobo's PMA-KE as the main agent, 1 part of epoxy resin E-51 as a curing agent, 1 part of catalyst composite nano-titanium dioxide, and 1 part of auxiliary agent ethylenediamine. Before use, mix the main agent, curing agent, catalyst and auxiliary agent evenly, carry out coating and compounding, and then continue to test the peel strength.

manufacture example 2

[0033] The PMA-KE of Toyobo was replaced with LN-1212 of Chengdu Kecheng Fine Chemical Technology Co., Ltd., and the others were the same as in Manufacturing Example 1.

manufacture example 3

[0035] The auxiliary agent is changed into boron trifluoride monoethylamine, and others are the same as manufacture example 2.

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Abstract

The invention provides a design method of a curing system of a lithium battery aluminum-plastic film adhesive, the adhesive is an olefin polymer, and a curing agent (A) is one or a mixture of more ofepoxy resin systems, but does not contain glycidyl amine type epoxy resin; a third component (B) is a catalyst; and a fourth component (D) is a compound capable of reacting with an epoxy group. A curing system of four components provides greater peel strength.

Description

technical field [0001] The invention relates to the technical field of lithium battery flexible packaging, in particular to a method for designing a curing system of a lithium battery adhesive. More specifically, the olefin polymer is designed as the main agent, the epoxy compound (curing agent A) is the curing agent component, and the third component is the catalyst component; the fourth component (D) is capable of combining with epoxy Group reactive compounds. Background technique [0002] Lithium-ion battery flexible packaging has been more and more widely used in the field of lithium batteries. It is composed of nylon, outer layer glue, aluminum foil, inner layer glue, and cpp from the outside to the inside; the inner layer glue is resistant to aluminum-plastic films. Corrosion plays a decisive role. Once the inner layer glue corrodes, it will cause the cpp to separate from the aluminum foil layer, causing problems such as flatulence and liquid leakage of the lithium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/26C09J125/06C09J145/00C09J123/20C09J163/02C09J11/04C09J11/08H01M2/02
CPCC08K2003/2241C08K2201/011C09J11/04C09J11/08C09J123/20C09J123/26C09J125/06C09J145/00C08L25/06C08L45/00C08L23/20C08L63/00C08K3/22
Inventor 不公告发明人
Owner 成都科成精化科技有限公司