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Manufacturing method of stainless steel foil and obtained stainless steel foil and steel-plastic film

A technology of stainless steel foil and production method, which is applied in the direction of electrical components, circuits, battery boxes/cover materials, etc., can solve the problems of insufficient surface roughness of stainless steel, difficulty in achieving the use effect, insufficient bonding strength, etc., and achieve improved resistance to electrolyte ability, avoiding material confusion, and uniform distribution of cohesive force

Active Publication Date: 2018-01-26
DONGGUAN ZHUOYUE NEW MATERIAL TECH CO LTD
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Problems solved by technology

However, in practical applications, due to the insufficient surface roughness of stainless steel, the reaction with organic resins is slow, and the bonding strength is not enough, it is difficult to achieve the best use effect

Method used

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  • Manufacturing method of stainless steel foil and obtained stainless steel foil and steel-plastic film
  • Manufacturing method of stainless steel foil and obtained stainless steel foil and steel-plastic film
  • Manufacturing method of stainless steel foil and obtained stainless steel foil and steel-plastic film

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Embodiment Construction

[0028] A method for making stainless steel foil, comprising the following steps in sequence:

[0029] First, use low-temperature plasma to clean the surface of the stainless steel foil to remove oil stains on the surface of the stainless steel foil. When cleaning the surface of the stainless steel foil, the cleaning machine uses a power of 450-550W and a current of 1.5-2.2A. By using low-temperature plasma for cleaning, the phenomenon of hydrogen embrittlement caused by the traditional pickling and degreasing process on stainless steel foil is avoided. At the same time, through low-temperature plasma surface treatment, a variety of oxygen-containing groups are introduced into the surface of stainless steel foil, which changes the surface from non-polar and difficult to stick to polar, easy to stick and hydrophilic, which is conducive to bonding and coated.

[0030] Such as Figure 1 to Figure 3 As shown, after the oil stain on the surface of the stainless steel foil is remov...

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Abstract

The invention provides a method for making stainless steel foil and the obtained stainless steel foil and steel-plastic film. By using low-temperature plasma to clean and degrease the surface of stainless steel, the hydrogen embrittlement of steel foil produced by the traditional pickling and degreasing process is avoided. The piercing strength of the stainless steel foil is improved, and the surface of the stainless steel foil is changed from non-polar and difficult to stick to a certain polarity, easy to stick and hydrophilic, which is more conducive to the combination of the stainless steel surface and the adhesive layer, and improves the Structural stability of the steel-plastic film; by electrochemically corroding the stainless steel foil with a cathode plate with closely arranged fine needles, a dot-like rough layer with closely arranged corrosion pits is formed on the surface of the stainless steel foil, and the roughness Better, the surface contact between the adhesive layer and the stainless steel foil is more sufficient, and the adhesive force distribution between the stainless steel foil and the adhesive layer is more uniform, and the steel-plastic film made has better stability.

Description

technical field [0001] The invention relates to the technical field of lithium battery manufacturing, in particular to a method for manufacturing stainless steel foil and the obtained stainless steel foil and steel-plastic film. Background technique [0002] Lithium-ion batteries usually consist of a positive electrode, a negative electrode, a separator, an electrolyte, and an outer casing. Lithium-ion battery outer packaging shells are divided into aluminum shells, iron shells, aluminum-plastic packaging shells, polymer plastic resin shells, and other shells that use the above materials in combination according to their materials. Due to the higher strength and rigidity of aluminum-plastic packaging shells, more aluminum-plastic packaging shells are currently used for lithium ions. [0003] As the requirements for the weight volume density and capacity volume density of lithium-ion batteries increase, the requirements for the outer packaging shell are getting higher and hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F3/06H01M2/02H01M50/128H01M50/131H01M50/14H01M50/145
CPCC25F3/06H01M50/116H01M50/124Y02E60/10
Inventor 张武林王晓明刘成志
Owner DONGGUAN ZHUOYUE NEW MATERIAL TECH CO LTD
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