Method for forming flexible diamond-like carbon film

Abstract

The method for forming a flexible diamond-like carbon film according to the present invention includes: forming a polymer film on a metal foil; coating a diamond-like carbon film precursor solution onto the polymer film to form a diamond-like carbon film; forming a polyurethane coating on the diamond-like carbon film; and quenching the diamond-like carbon film and the polyurethane coating. This method is simple and efficient, capable of preparing flexible diamond-like carbon films with strong adhesion and flexibility, whose surfaces can be decorated as needed. Furthermore, the manufacturing process is simple and low-cost, making it suitable for mass production.

Description

Technical Field

[0001] This invention relates to the field of film processing, and more particularly to a method for forming a flexible cobalt-like carbon film. Background Technology

[0002] Diamond-like carbon (DLC) films are surface modification materials with excellent mechanical properties, chemical inertness, and corrosion resistance, and are widely used in lubrication, wear prevention, corrosion protection, and biomedicine. However, traditional DLC film coatings are too brittle and lack flexibility, making them prone to cracking under stress, which reduces their effectiveness and service life, thus limiting their application in certain fields.

[0003] Therefore, it is necessary to provide a method for forming flexible diamond-like carbon films to overcome the above-mentioned defects. Summary of the Invention

[0004] The purpose of this invention is to provide an improved method for forming a flexible diamond-like carbon film. This method is simple and efficient, and can prepare a flexible diamond-like carbon film with strong adhesion and flexibility. Its surface can be decorated as needed. Moreover, the manufacturing process is simple and low-cost, and it is suitable for mass production.

[0005] To achieve the above objectives, the method for forming a flexible diamond-like carbon film according to the present invention includes the following steps:

[0006] A polymer film is formed on a metal foil;

[0007] A diamond-like carbon film precursor solution is coated onto the polymer film to form a diamond-like carbon film;

[0008] A polyurethane coating is formed on the diamond-like carbon film; and

[0009] The diamond-like carbon film and the polyurethane coating are subjected to quenching treatment.

[0010] Compared with existing technologies, the method of this invention uses a polymer film as the substrate and coats its surface with a diamond-like carbon film coating, giving the coating excellent flexibility and bendability to adapt to various applications requiring flexibility and bendability. Forming a polyurethane coating on the diamond-like carbon film further increases its flexibility. This method involves quenching the diamond-like carbon film and polyurethane coating, which enhances the adhesion and hardness of the diamond-like carbon film coating, ensuring its stability during long-term use. This method employs a simple process flow, requiring no expensive equipment or materials, thus significantly reducing production costs.

[0011] As one embodiment, the step of forming the polymer film includes: coating the metal foil with a polymer coating, and then heating and curing it to form the polymer film. Preferably, the heating and curing temperature is 150-160°C.

[0012] As an example, the preparation of the diamond-like carbon film precursor solution includes: dissolving the diamond-like carbon film precursor in acetone.

[0013] As one embodiment, the step of forming the diamond-like carbon film includes: coating the diamond-like carbon film precursor solution onto the polymer film, vacuum drying to form a diamond-like carbon film coating, and heating and baking to form the diamond-like carbon film. Preferably, the heating and baking temperature is 120-130°C.

[0014] As one embodiment, the step of forming the polyurethane coating includes: coating the diamond-like carbon film with a polyurethane coating, and then heating and baking to form the polyurethane coating. Preferably, the heating and baking temperature is 70-80°C.

[0015] As an example, the quenching process includes: controlling the quenching temperature to 180-200℃ and the quenching time to 30-40 minutes. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] The following description, in conjunction with embodiments, further illustrates the method for forming the flexible diamond-like carbon film of the present invention, but does not limit the invention. The method of the present invention aims to provide a simple and efficient method for forming a flexible diamond-like carbon film, capable of preparing a flexible diamond-like carbon film with strong adhesion and flexibility, the surface of which can be decorated as needed. Furthermore, the method has a simple manufacturing process, low cost, and is suitable for mass production.

[0021] In one embodiment of the method for forming a flexible diamond-like carbon film according to the present invention, the method includes the following steps:

[0022] A polymer film is formed on a metal foil;

[0023] A diamond-like carbon film precursor solution is coated onto the polymer film to form a diamond-like carbon film;

[0024] A polyurethane coating is formed on the diamond-like carbon film; and

[0025] The diamond-like carbon film and the polyurethane coating are subjected to quenching treatment.

[0026] In this invention, a polymer film is used as the substrate, and a diamond-like carbon film coating is applied to its surface. This coating provides excellent flexibility and bendability, adapting to various applications requiring flexibility and bendability. A polyurethane coating is then formed on the diamond-like carbon film to further enhance its flexibility. The method involves quenching the diamond-like carbon film and the polyurethane coating, which strengthens the adhesion and hardness of the diamond-like carbon film coating, ensuring its stability during long-term use. This method employs a simple process flow, requiring no expensive equipment or materials, thus significantly reducing production costs.

[0027] Specifically, in this method, a polymer film, such as a polytetrafluoroethylene (PTFE) polymer film, is used as the substrate. A metal foil serves as the supporting substrate for the polymer film.

[0028] First, clean the metal foil with detergent and spray its surface with orange paint so that the surface of the foil can be clearly seen when the polymer film is coated.

[0029] Next, a polymer coating with a thickness of about 30 to 40 μm is coated on the surface of the metal foil, and then it is placed in an oven and baked at 150-160°C for 1.5 to 2 hours to cure and form a polymer film.

[0030] Next, a diamond-like carbon film precursor solution is prepared. Specifically, the diamond-like carbon film precursor is dissolved in acetone to obtain the diamond-like carbon film precursor solution. In one specific embodiment, 15 grams of the diamond-like carbon film precursor is dissolved in 30 ml of acetone and stirred until homogeneous. The diamond-like carbon film precursor solution is uniformly coated onto a polymer film and then dried under vacuum to form a diamond-like carbon film coating. After drying, it is placed in an oven and baked at 120-130°C for 30-45 minutes to form a diamond-like carbon film.

[0031] Next, a polyurethane coating is applied to the diamond-like carbon film to enhance the flexibility and stability of the coating. The sample is then placed in an oven and baked at 70-80°C for 1-1.5 hours to cure and form the polyurethane coating.

[0032] Finally, the diamond-like carbon film and its coating were quenched by placing the samples in an oven and baking them at 180-200℃ for 30-40 minutes to enhance the adhesion and hardness between the diamond-like carbon film and the coatings.

[0033] Therefore, this invention uses a polymer film as the substrate and coats it with a diamond-like carbon film coating, giving the coating excellent flexibility and bendability to adapt to various applications requiring flexibility and bendability. Forming a polyurethane coating on the diamond-like carbon film further increases its flexibility. The method involves quenching the diamond-like carbon film and polyurethane coating, which enhances the adhesion and hardness of the diamond-like carbon film coating, ensuring its stability during long-term use. This method employs a simple process flow, requiring no expensive equipment or materials, thus significantly reducing production costs.

[0034] 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 method for forming a flexible diamond-like carbon film, characterized in that, Includes the following steps: A polymer film is formed on a metal foil; A diamond-like carbon film precursor solution is coated onto the polymer film to form a diamond-like carbon film; A polyurethane coating is formed on the diamond-like carbon film; as well as The diamond-like carbon film and the polyurethane coating are subjected to quenching treatment.

2. The method for forming a flexible diamond-like carbon film as described in claim 1, characterized in that, The steps for forming the polymer film include: coating the metal foil with a polymer coating and then heating and curing it to form the polymer film.

3. The method for forming a flexible diamond-like carbon film as described in claim 2, characterized in that, The temperature for heat curing is 150-160℃.

4. The method for forming a flexible diamond-like carbon film as described in claim 1, characterized in that, The preparation of the diamond-like carbon film precursor solution includes: dissolving the diamond-like carbon film precursor in acetone.

5. The method for forming a flexible diamond-like carbon film as described in claim 1, characterized in that, The steps for forming the diamond-like carbon film include: coating the diamond-like carbon film precursor solution onto the polymer film, drying it under vacuum to form a diamond-like carbon film coating, and heating and baking it to form the diamond-like carbon film.

6. The method for forming a flexible diamond-like carbon film as described in claim 5, characterized in that, The heating and baking temperature is 120-130℃.

7. The method for forming a flexible diamond-like carbon film as described in claim 1, characterized in that, The steps for forming the polyurethane coating include: coating the diamond-like carbon film with a polyurethane coating, and then heating and baking it to form the polyurethane coating.

8. The method for forming a flexible diamond-like carbon film as described in claim 7, characterized in that, The heating and baking temperature is 70-80℃.

9. The method for forming a flexible diamond-like carbon film as described in claim 1, characterized in that, The quenching process includes controlling the quenching temperature to 180-200℃ and the quenching time to 30-40 minutes.