Laminate adhesive, stack using the same, and secondary battery

A technology of adhesives and solvents, applied in the field of adhesives for lamination, can solve problems such as low electrolyte resistance, interlayer peeling, and inability to be used as a sealing film, and achieve excellent adhesiveness and moisture resistance.

Active Publication Date: 2016-06-08
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used as a battery sealing film as described above, although it exhibits excellent adhesive force immediately after lamination at high temperature, it has low electrolyte resistance and delamination occurs over time, so it cannot be used as a sealing film

Method used

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  • Laminate adhesive, stack using the same, and secondary battery
  • Laminate adhesive, stack using the same, and secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Add 50 parts of modified polyolefin resin GMP7550E (manufactured by LOTTECHEMICAL), 50 parts of Auroren350S, 0.05 parts of Curezol2E4MZ, 6.0 parts of DenacolEX-850L, 320 parts of methylcyclohexane, 40 parts of ethyl acetate, 40 parts Parts of isopropanol (IPA) and fully stirred, with a rod coater at 5g / m 2 (Dry type) After coating on an aluminum foil and drying at 80 degreeC for 1 minute, it bonded with the CPP film at 100 degreeC, and produced the coated object.

[0087] Thereafter, the initial adhesive strength was measured after aging at 60° C. for 5 days.

[0088] Other adhesives were blended as shown in Table 1, and adhesives were produced in the same manner as in Example 1. Furthermore, each laminated body was produced by the same manufacturing method as the laminated body 1.

[0089] Table 1 shows the results of evaluating the adhesive performance and electrolyte resistance of the laminates obtained in each example. In addition, the conditions of each performa...

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Abstract

By providing a heretofore unknown laminate adhesive, the present invention addresses the problem of providing an adhesive composition for laminate stacks, which provides excellent adhesion between a metal layer and a plastic layer and satisfies moisture resistance, heat resistance, insulation performance, durability, etc., further combined with electrolyte resistance in low-temperature curing, without causing delamination over time. The present invention also addresses the problem of providing a stack using the adhesive composition, and a secondary battery. The above problems are solved with a laminate adhesive containing a non-chlorine polyolefin resin (A), an epoxy compound (B), and an organic solvent (C) essentially containing a cyclic alkane compound and containing an ester solvent or an alcohol solvent, wherein the organic solvent (C) is constituted such that the ratio of the mass parts of the cyclic alkane compound to the mass parts of other solvents is in the range of 1 / 1 to 20 / 1, inclusive.

Description

technical field [0001] The present invention relates to a lamination adhesive for sealing an electrolyte used in a secondary battery, a laminate using the adhesive, and a secondary battery. Background technique [0002] A secondary battery typified by a lithium ion battery has a configuration including a positive electrode, a negative electrode, an electrolytic solution sealed between the positive electrode and the negative electrode, and the like. In addition, as an enclosing bag for enclosing lead wires for extracting the charge of the positive electrode and the negative electrode to the outside, a laminate obtained by laminating metal foil such as aluminum foil or a metal vapor-deposited layer to plastic can be used. [0003] For this laminated body, the moisture resistance, sealing performance, puncture resistance, insulation, heat resistance, cold resistance, corrosion resistance, etc. required as a secondary battery are required, but it is particularly difficult to obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/00B32B15/085C09J11/06C09J163/00H01M2/02H01M50/119H01M50/121H01M50/129
CPCB32B15/085C09J163/00C09J151/06H01M4/366H01M10/4235B32B15/092B32B15/098B32B15/20B32B27/24B32B27/30B32B27/302B32B27/306B32B27/308B32B27/32B32B27/36B32B27/38B32B1/00C08K5/1515C08L51/06C08L63/00B32B2250/03B32B2270/00B32B2274/00B32B2307/206B32B2307/306B32B2307/31B32B2307/50B32B2307/714B32B2307/718C08L2205/02C08L2205/03B32B7/12B32B2457/10C09J11/06Y02E60/10H01M50/124H01M50/121H01M50/129H01M50/119C08L23/00C08L23/26C09J123/00C09J123/26
Inventor 中村英美松尾高年神山达哉
Owner DIC CORP
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