KR101917634B1 - Manufacturing method of Metal - Polymer Clad - Google Patents

Abstract

(A) conducting a surface activation treatment by irradiating a plasma on a first surface of a first metal foil and a first surface of a first polymer film; And (b) low-pressure rolling and cladding the first surface of the first metal foil subjected to the surface activation treatment and the first surface of the first polymer film to perform cladding. The method of manufacturing a metal- And a metal-polymer clad material produced by the method.

Description

[0001] Manufacturing Method of Metal-Polymer Clad [0002]

The present invention relates to a method of manufacturing a metal-polymer clad material that can be applied to a lead material of a lithium ion secondary battery, and more particularly, to a method of manufacturing a metal foil and a polymer film clad material formed by plasma- To a metal-polymer clad material formed.

The lithium ion secondary battery or the nickel metal hydride battery includes a metal case forming the outside and an electrolytic solution, a current collector, a positive electrode terminal and a negative electrode terminal inside the case. The battery structure is constituted by sequentially laminating an anode, a separator and a cathode, and the current collector is wound together and positioned inside the metal case. The positive electrode and the positive electrode terminal, and the negative electrode and the negative electrode terminal are electrically connected by the positive lead and the negative lead respectively.

In recent years, miniaturization and high energy density of batteries have been demanded in accordance with the enhancement of performance of electric products and the expansion of battery applications. Thus, it is necessary to reduce the size and thickness of each component constituting the battery. However, when the components are made small and thin, there is a problem that electric resistance increases and electric energy loss occurs. Further, in order to satisfy the high functionality and high output of the product, the positive electrode lead and the negative electrode lead require electrical characteristics and corrosion resistance to the electrolyte.

As a result, there is an urgent need to develop a material having excellent electrical characteristics and corrosion resistance, capable of downsizing and thinning the positive electrode lead and the negative electrode lead.

The present invention has been conceived to solve the above-described problems, and it is an object of the present invention to provide a method of manufacturing a plasma display panel, which uses a polymer film having corrosion resistance to a metal foil having an electrical property and an electrolyte without additional cold rolling and heat treatment, It is another object of the present invention to provide a method for producing a metal-polymer film clad material by performing a rolling process.

Another object of the present invention is to provide a multilayer metal-polymer clad material produced by the above-described method, which has excellent electrical properties and corrosion resistance to electrolytes.

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: (a) performing a surface activation treatment by irradiating plasma on a first surface of a first metal foil and a first surface of a first polymer film; And (b) low-pressure rolling and cladding the first surface of the first metal foil subjected to the surface activation treatment and the first surface of the first polymer film to perform cladding. The method of manufacturing a metal- To provide a method of manufacturing the ash.

According to a preferred embodiment of the present invention, the first metal foil may be in the form of nickel (Ni), aluminum (Al) or an alloy thereof, wherein the purity of nickel and aluminum in the first metal foil is 99.9% desirable. The first polymer film is preferably polypropylene (PP) or polyethylene (PE).

According to another preferred embodiment of the present invention, in the steps (a) and (b), the plasma power is 0.3 to 1.5 Kw, the plasma reaction gas is Ar + 10% H ₂ , the plasma reaction gas flow rate is 500 to 600 sccm, The rolling roll speed may be 1 m / min and the low pressure rolling load may be 1 to 30 gf.

In this case, in the steps (a) and (b), the plasma power applied to the first polymer film is in the range of 0.5 to 0.7 Kw, and the bonding strength is preferably 1.0 N / mm or more.

According to another preferred embodiment of the present invention, the method comprises: (c) performing a surface activation treatment by irradiating a plasma onto a first surface of a first metal foil and a first polymer film of a first clad metal-polymer clad material step; And (d) low-pressure rolling and cladding the first surface of the surface-activated first metal foil and the second polymer film to form a multi-layer metal-polymer clad material of two or more layers.

The present invention also provides two or more multi-layer metal-polymer clad materials made by the above-described method.

Here, the bonding strength of the clad material may be 1.0 / mm or more, and these may be used as a lead material for both electrodes of a lithium ion secondary battery and / or a nickel metal hydride battery.

As described above, in the present invention, the metal-polymer film clad material having excellent bonding strength can be manufactured through the continuous mass production vacuum plasma treatment without additional cold rolling and heat treatment steps, thereby shortening the manufacturing process and improving the economical efficiency Effect can be expected.

In addition, when the metal-polymer clad material is used as an electrode lead material for a battery, it has excellent electrical characteristics and corrosion resistance to an electrolyte, so that damage to the internal material of the battery and deterioration of battery characteristics can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the whole process of a method for producing a multilayer metal-polymer clad material by a continuous mass production vacuum plasma treatment;

Hereinafter, the present invention will be described in detail.

The present invention provides a method for manufacturing a metal-polymer clad material by cladding a polymer film as an overlay material on a surface of a metal foil as a base material by using a clad material manufacturing process by a continuous mass vacuum plasma process.

More specifically, in the present invention, a surface layer of a metal foil and a polymer film is irradiated with a plasma to perform a surface activation treatment, followed by low pressure rolling to produce a precise layered composite material. In this case, plasma power is 0.3 to 1.5 Kw, The gas flow rate is 500 to 600 sccm, the roll speed is 1 m / min, and the low pressure rolling load is 1 to 30 gf.

In practice, the metal-polymer clad material of the present invention produced under the above-described methods and conditions exhibits excellent bonding strength of 1.0 N / mm or more in bonding strength, and the conventional cold rolling and heat treatment processes themselves are unnecessary, Simplification and economical efficiency can be enhanced.

Further, by forming a clad material by using a metal and a polymer at the same time, excellent electrical conductivity and corrosion resistance to an electrolyte can be exhibited.

≪ Method of producing metal-polymer clad material >

Hereinafter, a method of manufacturing the metal-polymer clad material according to the present invention will be described. However, the present invention is not limited to the following production methods, and the steps of each process may be modified or optionally mixed as required.

(A) performing a surface activation treatment by irradiating plasma on the first surface of the first metal foil and the first surface of the first polymer film Step S10); And (b) low pressure rolling and cladding the first surface of the first metal foil subjected to the surface activation treatment and the first surface of the first polymer film (step S20).

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram showing an entire process for producing a metal-polymer clad material by continuous vacuum plasma treatment according to the present invention. Fig.

1, the metal-polymer clad material according to the present invention is characterized in that the first polymer film 1 part and the first metal foil 2 part are continuously plasma-treated by a plasma generator 3, Polymer film 5 is wound by the winder 6 as the metal-polymer film 5 is adhered to the metal-polymer film 5 at the portion where the metal-polymer film 5 is joined.

Hereinafter, the manufacturing method will be described separately for each step with reference to FIG.

(a) a step of irradiating a plasma onto the first metal foil and the first polymer film to perform a surface activation treatment step (hereinafter referred to as step S10)

The clad material that can be used as a lead material of the lithium ion secondary battery according to the present invention uses a metal foil 2 as a base metal. Nickel (Ni), aluminum (Al), or an alloy thereof, which is excellent in electrical conductivity, can be used as the metallic foil component that can be used.

The purity of nickel (Ni) and aluminum (Al) in the first metal foil is preferably 99% or more. When the first metal foil is in the form of an alloy, the nickel content of the nickel-based alloy may be 99% or more, and the aluminum content of the aluminum-based alloy may be 99% or more.

Also, the first polymer film (1) is used as the overlay material. The first polymer film may be a conventional polymer known in the art. Preferably, the first polymer film may have stable physical properties within the operating range of the battery. And polyolefins having excellent corrosion resistance can be used.

As the component of the usable polymer film, there is a polypropylene (PP) film or a polyethylene (PE) film or the like, preferably a polypropylene (PP) film excellent in corrosion resistance.

The clad material of the present invention, which is constituted by using the first metal foil and the first polymer film, can conduct electricity at a high current without corroding the electrolyte.

The surface of the first polymer film and the surface of the first metal foil (for example, the first surface) are activated by plasma treatment under a vacuum condition. At this time, the plasma power applied to the surfaces of the first polymer film and the first metal foil Can be different from each other or can be adjusted to be the same.

Here, the plasma power applied to the surface of the first polymer film is preferably lower than the plasma power applied to the first metal foil. For example, the plasma power applied to the first polymer film may be in the range of 0.5 to 0.7 Kw. If the plasma power applied to the first polymer film is higher than 0.7 Kw, the first polymer film is damaged by heat generation, resulting in a decrease in the final bonding strength.

Further, the plasma reaction gas can be appropriately adjusted within a conventional range known in the art, and for example, an inert gas or a mixed gas in which an inert gas and hydrogen are mixed can be used. Preferably, a mixed gas of Ar and 10% hydrogen may be used.

The flow rate of the plasma reaction gas is not particularly limited, but may be in the range of 500 to 600 sccm, for example.

(b) cladding the surface-activated first metal foil and the first polymer film by low-pressure rolling (hereinafter referred to as step S20)

The first surface of the first metal foil subjected to the plasma treatment and the first surface of the first polymer film in the step S10 are passed through the low pressure rolling roll 4 in a state where they are bonded to each other, The film is first bonded to produce a metal-polymer clad material.

In the present invention, the steps S10 and S20 are continuously performed. The conditions of the steps S10 to S20 include a plasma power of 0.3 to 1.5 Kw, a flow rate of the plasma reaction gas of 500 to 600 sccm, The roll speed is preferably 1 m / min, and the low pressure rolling tension is preferably 1 to 30 gf.

In the present invention, if necessary, the above-mentioned joining method for the primary-bonded metal-polymer clad material can be repeated at least once to form a multi-layered metal-polymer clad material of two or more layers.

As the material to be bonded to the primary-bonded metal-polymer clad material at this time, a homogeneous or heterogeneous metal foil or polymer film can be used without limitation.

More specifically, in one preferred embodiment for producing the two or more multi-layer metal-polymer clad material, (c) the first metal foil of the first clad metal-polymer clad material and the first metal foil of the second polymer film A step of irradiating the plasma with the surface activation treatment (S30); And (d) cladding the first surface of the first metal foil and the second polymer film by low-pressure rolling and cladding (S40). have.

At this time, the conditions at the time of plasma and low pressure rolling in steps S30 to S40 may be controlled in the same manner as in steps S10 to S20. The same or different kinds of metal foil or polymer film used as needed can also be used in the same manner as in steps S10 to S20 described above.

In addition, the present invention provides a metal-polymer clad material, preferably a two-layer or more multi-layer clad material, produced by the above-described method.

Here, the multi-layer clad material may have a two-layer structure of a metal and a polymer, or a three-layer structure of a polymer-metal-polymer type. However, it is not particularly limited.

The multi-layered clad material exhibits excellent bonding strength with a bonding strength of 1.0 N / mm or more, and conventional cold rolling and heat treatment processes themselves are unnecessary, thereby simplifying the manufacturing process and improving the economical efficiency.

The metal-polymer clad material produced as described above has excellent electrical conductivity and corrosion resistance to electrolytes, and thus can be usefully used as a lead material for lithium ion secondary batteries or nickel-metal hydride batteries. In addition, metal-polymer clad materials can be used in various fields without limitation.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the scope of the present invention is not limited by the following Examples and Experimental Examples.

[Examples 1 to 4] and [Comparative Example 1]

Using a nickel and polypropylene polymer film having a purity of 99.9% or more, a clad material was produced through plasma surface treatment and low-pressure rolling.

The plasma power applied to the nickel and polymer films and the bonding strength of the prepared metal-polymer clad materials were respectively measured and reported in Table 1 below.

Example Nickel Plasma Power
(kW) Polymer Plasma Power
(kW) Bond strength (N / mm) Example 4 1.5 0.9 0.2 Example 3 1.5 0.7 1.2 Example 2 1.5 0.5 1.1 Example 1 1.5 0.3 0.4 Comparative Example 1 1.5 - 0.1

As shown in Table 1, a clad material having a bonding strength of 0.1 N / mm was prepared in Comparative Example 1 in which the plating power was applied only to nickel (Ni), which was easily separable by hand.

On the other hand, Examples 1 to 4, in which plasma power was applied to the nickel and polymer films respectively, exhibited superior bonding strengths to those of Comparative Example 1. Particularly, in Example 1 in which 0.7 kw (Example 3) 3, a maximum bonding strength of 1.2 N / mm was observed.

As a result, when the plasma power exceeding 0.7 kW is applied to the polymer film, it is considered that the polymer film is damaged due to heat generation according to the plasma power, and the bonding strength is lowered.

Therefore, it was confirmed that the bonding strength of the clad material can be controlled by adjusting the plasma power applied to the polymer film.

Claims (10)

(a) performing a surface activation treatment by irradiating plasma on a first surface of a first metal foil and a first surface of a first polymer film; And
(b) low-pressure rolling and cladding the first surface of the surface-activated first metal foil and the first surface of the first polymer film
Polymer clad material by continuous mass vacuum plasma treatment in which step (a) and step (b) are carried out continuously, the method comprising:
In the above steps (a) and (b), the plasma power is 0.5 to 1.5 Kw, the plasma reaction gas flow rate is 500 to 600 sccm, the rolling roll speed is 1 m / min and the low pressure rolling load is 1 to 30 gf However,
The plasma power applied to the surface of the first polymer film in the step (a) is 0.5 to 0.7 Kw lower than the plasma power applied to the first metal foil,
Wherein the bonding strength of the multi-layer metal-polymer clad material of two or more layers produced is 1.0 N / mm or more. The method according to claim 1,
Wherein the first metal foil is in the form of nickel (Ni), aluminum (Al), or an alloy thereof. 3. The method of claim 2,
Wherein the purity of nickel and aluminum in the first metal foil is 99% or more, respectively. The method according to claim 1,
Wherein the first polymer film is polypropylene (PP) or polyethylene (PE). delete delete The method according to claim 1,
(c) performing a surface activation treatment by irradiating a plasma on the first surface of the first metal foil and the second polymer film of the first clad metal-polymer clad material; And
(d) low-pressure rolling and cladding the first surface of the surface-activated first metal foil and the second polymer film
Polymer clad material to form a multi-layered metal-polymer clad material of two or more layers. delete delete The method according to claim 1,
Wherein the metal-clad laminate is used as a lead material for a lithium-ion secondary battery or a nickel-metal hydride battery.

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