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

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: 2020-06-19
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 solutions, or the other two patented methods mentioned in this article, there are certain deficiencies in the bonding effect and efficiency, and there is still room for improvement in bonding and corrosion resistance, especially in power batteries with higher requirements In the field of aluminum-plastic film, seemingly small performance improvements can provide better use effects

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0027] 100 parts of Toyobo's PMA-KE as the main agent, 1 part of epoxy resin E-51 as a curing agent, and 1 part of catalyst composite nano-titanium dioxide. Before use, mix the main agent, curing agent and catalyst evenly for coating and compounding, and then continue to test the peel strength.

manufacture example 2

[0029] 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

[0031] The catalyst was replaced by a ferrocene-based catalyst, and the homologue cyclohexylferrocene of ferrocene was reacted with an equivalent amount of chloranil to obtain the catalyst, and the others were the same as in Manufacturing Example 2.

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Abstract

The invention provides a design method for a curing system of an aluminum-plastic film adhesive of a lithium battery. The adhesive is an olefin polymer; a curing agent (A) is one selected from a groupconsisting of epoxy resin systems or a mixture of more selected from the group, but does not contain glycidyl amine type epoxy resin; and a third component (B) is a catalyst. The curing system of three components provides more superior bonding performance and bonding efficiency.

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. 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 battery. [0003] At present, all glues for bonding cpp and aluminum foil adopt a two-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/02C09J163/00C09J11/08H01M2/02
CPCC08K2003/2241C08K2201/011C09J11/08C09J123/02H01M50/124C08L63/00Y02E60/10
Inventor 程自强
Owner 成都科成精化科技有限公司