Corrosion-resistant adhesive for lithium battery packaging aluminum-plastic film
A technology of aluminum-plastic film and lithium battery, applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., which can solve the problem of insufficient adhesion, rapid decline in adhesion, delamination/corrosion of aluminum foil, etc. Problems, achieve the effect of enhancing corrosion resistance and adhesion, enhancing adhesion and corrosion resistance, and reducing production costs
Inactive Publication Date: 2018-05-04
苏州爱康商务咨询服务有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In addition to the coating machine and laminating machine, the equipment used to prepare aluminum-plastic film by hot-pressing lamination process must also be equipped with an extrusion lamination lamination machine. The extrusion lamination lamination machine used in the lithium battery aluminum-plastic film industry requires high precision. It is imported and expensive
In order to ensure the adhesion between aluminum foil and CPP film, the extrusion thickness of the adhesive is generally 8-12 μm, and the extrusion compounding speed is generally 50-60 m / min. If it is too thin or the speed is too fast, the adhesion is insufficient, and the extrusion When used, the adhesive is prone to gelation, causing product appearance problems
In addition, the extruded adhesives used for hot pressing lamination are generally thermoplastic materials, and the adhesive force of the product decreases rapidly at high temperatures.
Conventional acrylic or polyurethane adhesives used in dry lamination have poor solvent / acid resistance and are prone to quality problems such as delamination / corrosion of aluminum foil. Ordinary solvent-resistant hot melt adhesives have insufficient adhesion to aluminum foil and CPP film
However, the cost of using imported adhesives is too high, and the supply cycle is relatively long
Method used
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[0026] The present invention is explained below in conjunction with specific embodiments.
[0027] The formula of table 1 embodiment and comparative example
[0028]
implement
example 1
implement
Example 2
implement
Example 3
Compared
example 1
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Example 5
Main resin
15%
15%
15%
15%
15%
15%
15%
15%
tackifying resin
2.5%
2.5%
2.5%
2.5%
2.5%
0
2.5%
2.5%
Antihydrolysis agent
0.5%
0.5%
0.5%
0.5%
0.5%
0.5%
0
0.5%
Hardener
2.5%
2.5%
2.5%
2.5%
2.5%
2.5%
2.5%
0
Maleic anhydride modified with acrylic acid
Modified ratio
1:1
1:5
5:1
1:0
0:1
1:1
1:1
1:1
[0029] According to the formulation in Table 1, the adhesive and aluminum-plastic film were prepared according to the following steps.
[0...
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Abstract
The invention provides corrosion-resistant adhesive for a lithium battery packaging aluminum-plastic film. Relative to the total mass of the adhesive, the corrosion-resistant adhesive for the lithiumbattery packaging aluminum-plastic film comprises 10 to 20 percent of matrix resin, 0.5 to 5 percent of a curing agent, 1 to 5 percent of tackifying resin, 0.1 to 1 percent of an anti-hydrolysis agentand 70 to 90 percent of a solvent, wherein the matrix resin is one or more of maleic anhydride modified styrene / polypropylene / polyolefin elastomer / rubber elastomer as well as one or more of acrylic acid modified polyolefin elastomer / styrene / polypropylene / polyethylene material; and the ratio of the maleic anhydride modified polyolefin to the acrylic acid modified polyolefin is 1:5 to 5:1. The adhesive is applied to preparation of the lithium battery packaging aluminum-plastic film, so that enhanced corrosion resistance and adhesive property are achieved, the production efficiency is greatly improved and the production cost is reduced.
Description
technical field [0001] The invention relates to an adhesive, in particular to a corrosion-resistant adhesive for lithium battery packaging aluminum-plastic film. Background technique [0002] Due to its light weight, large capacity, long cycle life and no memory effect, lithium-ion batteries are widely used in the field of digital electronics. In recent years, they have developed rapidly in emerging fields such as new energy vehicles and energy storage. Rigid material packaging such as aluminum shells and steel shells used in traditional lithium batteries, in addition to the problem of lightness, there are also safety hazards such as explosions due to excessive pressure. Aiming at a series of problems existing in lithium battery metal packaging, a new aluminum-plastic composite film packaging material came into being. The packaging material is generally composed of three layers of film materials. From the outside to the inside, there are protective layer, aluminum foil laye...
Claims
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IPC IPC(8): C09J151/06
CPCC09J151/06C08L2203/206C08L2205/025C08L51/06
Inventor 刘平磊苗鲁滨汪裕超
Owner 苏州爱康商务咨询服务有限公司