Surface treatment method of rubber part

Abstract

The surface treatment method for the rubber part comprises the steps that the rubber part is placed in a vacuum chamber, and the vacuum chamber is controlled to be at first air pressure; acrylic ester gas is introduced into the vacuum chamber, and the vacuum chamber is adjusted to be at a second air pressure; performing ion bombardment on the surface of the rubber part; and depositing a metal layer on the surface of the rubber part. The method is simple and effective, and the prepared rubber part product is stable in structure, good in electromagnetic shielding effect and excellent in anti-static performance, so that the production requirement is met.

Description

Technical Field

[0001] This invention relates to the field of rubber processing, and more particularly to a surface treatment method for rubber parts. Background Technology

[0002] In the manufacturing of electronic products, the requirements for anti-static properties of rubber parts are extremely high. For example, in a dry environment, the human body or objects easily carry static charges. When a grounding wire is connected to the earth, the static charge accumulated on the rubber soles of shoes can be safely released to the ground. Therefore, it is often necessary to connect a grounding wire to the rubber soles of shoes to prevent the accumulated charge from damaging semiconductor components.

[0003] The traditional method for treating rubber shoe soles involves directly sputtering metal to form a metal film on the rubber. However, the metal film formed in this way often does not bond well with the rubber, making it prone to peeling and breakage. This results in poor electromagnetic shielding and antistatic properties of the rubber components.

[0004] Therefore, there is an urgent need to provide an improved surface treatment method for rubber parts to overcome the above defects. Summary of the Invention

[0005] The purpose of this invention is to provide a surface treatment method for rubber parts. This method is simple and effective, and the resulting rubber parts have a stable structure, good electromagnetic shielding effect, and excellent antistatic performance, thereby meeting production needs.

[0006] To achieve the above objectives, the surface treatment method for rubber parts of the present invention includes the following steps:

[0007] The rubber component is placed inside the vacuum chamber, and the vacuum chamber is controlled to be at a first pressure.

[0008] An acrylate gas is introduced into the vacuum chamber, and the vacuum chamber is adjusted to a second pressure.

[0009] The surface of the rubber part is subjected to ion bombardment; and

[0010] A metal layer is deposited on the surface of the rubber component.

[0011] Compared with the prior art, the method of the present invention first places the rubber part in a vacuum chamber and controls the gas pressure of the vacuum chamber. Then, an acrylate gas is introduced and the gas pressure of the vacuum chamber is adjusted so that the acrylate monomers are diffused throughout the vacuum chamber. Under this state, the rubber part is bombarded with ions. By using acrylate gas, plasma is generated by glow discharge, which breaks the chemical bonds of the gaseous acrylate monomers to generate active groups. Subsequently, a metal layer is deposited on the surface of the rubber part. The active groups can form a corrosion-resistant semi-thin film in the middle of the metal film layer, thereby compensating for the defects of the metal film layer. Thus, a metal layer can be firmly bonded to the surface of the rubber part, thereby improving the corrosion resistance and stability of the metal layer, and greatly improving the electromagnetic shielding effect and antistatic performance of the rubber part.

[0012] As an example, the metal layer is selected from at least one of aluminum, copper, titanium, silver, nickel, indium, and tin.

[0013] As an example, the flow rate of the acrylate gas is 10-15 sccm.

[0014] As one embodiment, the ion bombardment includes: introducing argon gas into the vacuum chamber, controlling the gas pressure of the vacuum chamber to be 0.15-0.2 Pa, controlling the voltage to be 5.0-8.0 KV, and the current to be 1.5-2.0 A.

[0015] As an example, the ion bombardment time is 15-25 minutes.

[0016] As an example, the thickness of the metal layer is 35-50 μm.

[0017] As one embodiment, the rubber component is cleaned with deionized water before being placed in the vacuum chamber.

[0018] As an example, the acrylate gas is obtained by heating acrylate monomers at 90-150°C. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific implementation methods of this application are described in detail below with reference to some embodiments. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] The surface treatment method for rubber parts of the present invention will be further described below with reference to embodiments, but this does not limit the present invention. The method of the present invention aims to provide a surface treatment method for rubber parts that is simple and effective, and the resulting rubber parts have a stable structure, good electromagnetic shielding effect, and excellent antistatic performance, thereby meeting production needs.

[0024] In one embodiment of the surface treatment method for rubber parts of the present invention, the method includes the following steps:

[0025] The rubber component is placed inside the vacuum chamber, and the vacuum chamber is controlled to be at a first pressure.

[0026] An acrylate gas is introduced into the vacuum chamber, and the vacuum chamber is adjusted to a second pressure.

[0027] The surface of the rubber part is subjected to ion bombardment; and

[0028] A metal layer is deposited on the surface of the rubber component.

[0029] The method of this invention first places a rubber part in a vacuum chamber and controls the gas pressure in the vacuum chamber. Then, an acrylate gas is introduced and the gas pressure in the vacuum chamber is adjusted so that the acrylate monomers diffuse throughout the vacuum chamber. Under this state, the rubber part is bombarded with ions. By using acrylate monomers, the gas is vaporized and plasma is generated by glow discharge, which breaks the chemical bonds of the gaseous monomers to generate active groups. Subsequently, a metal layer is deposited on the surface of the rubber part. The active groups can form a corrosion-resistant semi-thin film in the middle of the metal film layer, thereby compensating for the defects of the metal film layer. Thus, a metal layer can be firmly bonded to the surface of the rubber part, thereby improving the corrosion resistance and stability of the metal layer, and significantly improving the electromagnetic shielding effect and antistatic performance of the rubber part.

[0030] In one specific embodiment, the surface of the rubber part is first cleaned with deionized water and then placed inside a vacuum chamber. The vacuum chamber is then evacuated to control the pressure within it to 0.05-0.08 Pa.

[0031] Optionally, the acrylate gas in this embodiment is obtained by heating the acrylate monomer. Specifically, the acrylate monomer is placed in a heating chamber and heated to a gaseous state at 90°C-150°C, thereby obtaining the acrylate gas.

[0032] Specifically, the heating chamber can be connected to the vacuum chamber. After obtaining the acrylate gas, the acrylate gas is introduced into the vacuum chamber at a flow rate of 10-15 sccm. This allows the pressure inside the vacuum chamber to be controlled and adjusted to 0.3-0.4 Pa. When this pressure is reached, the acrylate monomers diffuse throughout the entire vacuum chamber.

[0033] Next, in this state, the surface of the rubber part is subjected to ion bombardment. Specifically, the ion bombardment process conditions are as follows: a high-power medium-frequency pulse or high-power DC power supply is used, argon gas is introduced, and the argon gas flow rate is maintained at 500-600 sccm, so that the vacuum degree in the vacuum chamber reaches 0.15-0.2 Pa. Under the conditions of voltage 5.0-8.0 kV and current 1.5-2.0 A, the argon gas is ionized and bombards the surface of the plastic product for 15-25 minutes. By using acrylate gas, plasma is generated by glow discharge, causing the chemical bonds of the gaseous acrylate to break and generate active groups. Subsequently, a metal layer is sputtered onto the surface of the rubber part. Optionally, the metal layer is selected from at least one of aluminum, copper, titanium, silver, nickel, indium, and tin. The active groups generated by the breaking of chemical bonds in gaseous acrylates form a corrosion-resistant semi-thin film in the middle of the metal film, thereby compensating for the defects of the metal film. As a result, a metal layer can be firmly bonded to the surface of the rubber part, thereby improving the corrosion resistance and stability of the metal layer and significantly improving the electromagnetic shielding effect and antistatic performance of the rubber part.

[0034] In summary, the method of this invention first places the rubber part in a vacuum chamber and controls the gas pressure in the vacuum chamber. Then, an acrylate gas is introduced, and the gas pressure in the vacuum chamber is adjusted so that the acrylate monomers diffuse throughout the vacuum chamber. Under this state, the rubber part is bombarded with ions. By using the acrylate gas, plasma is generated by glow discharge, which breaks the chemical bonds of the gaseous acrylate monomers to generate active groups. Subsequently, a metal layer is deposited on the surface of the rubber part. The active groups can form a corrosion-resistant semi-thin film in the middle of the metal film layer, thereby compensating for the defects of the metal film layer. Thus, a metal layer can be firmly bonded to the surface of the rubber part, thereby improving the corrosion resistance and stability of the metal layer, giving the rubber part good electromagnetic shielding effect and excellent antistatic performance, thus meeting production needs.

[0035] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A surface treatment method for rubber parts, characterized in that, Includes the following steps: The rubber component is placed inside the vacuum chamber, and the vacuum chamber is controlled to be at a first pressure. An acrylate gas is introduced into the vacuum chamber, and the vacuum chamber is adjusted to a second pressure. The surface of the rubber part is subjected to ion bombardment; as well as A metal layer is deposited on the surface of the rubber component.

2. The surface treatment method for rubber parts as described in claim 1, characterized in that, The metal layer is selected from at least one of aluminum, copper, titanium, silver, nickel, indium, and tin.

3. The surface treatment method for rubber parts as described in claim 1, characterized in that, The first air pressure is 0.05-0.08 Pa, and the second air pressure is 0.3-0.4 Pa.

4. The surface treatment method for rubber parts as described in claim 1, characterized in that, The flow rate of the acrylate gas is 10-15 sccm.

5. The surface treatment method for rubber parts as described in claim 1, characterized in that, The ion bombardment includes: introducing argon gas into the vacuum chamber, controlling the pressure of the vacuum chamber at 0.15-0.2 Pa, controlling the voltage at 5.0-8.0 KV, and the current at 1.5-2.0 A.

6. The surface treatment method for rubber parts as described in claim 1, characterized in that, The ion bombardment time is 15-25 minutes.

7. The surface treatment method for rubber parts as described in claim 1, characterized in that, The thickness of the metal layer is 35-50 μm.

8. The surface treatment method for rubber parts as described in claim 1, characterized in that, Before the rubber component is placed in the vacuum chamber, it is cleaned with deionized water.

9. The surface treatment method for rubber parts as described in claim 1, characterized in that, The acrylate gas is obtained by heating acrylate monomers at 90-150°C.