CN116093195B - Method for improving adhesiveness of color layer in color photovoltaic module - Google Patents

Abstract

The application relates to the field of photovoltaic modules, in particular to a method for improving adhesiveness of a color layer in a color photovoltaic module, which comprises the following steps: modifying a front plate material of the photovoltaic module by plasma wind, and performing plasma flame treatment to obtain a modified front plate material; forming a color layer on at least part of the surface of the modified front plate material; wherein the wind speed of the plasma wind is 15 cm/s-25 cm/s; the surface of the front plate material is treated by the plasma wind, and meanwhile, the wind speed of the plasma wind is controlled, compared with the traditional layer liquid, the surface cleaning and activating treatment of the front plate material by the physical mode of the plasma wind can realize harmless improvement of the bonding fastness of the color ink and the front plate of the photovoltaic module on the basis of using reliability.

Description

A method to improve the adhesion of color layers in colored photovoltaic modules

Technical field

The present application relates to the field of photovoltaic modules, and in particular, to a method for improving the adhesion of color layers in colored photovoltaic modules.

Background technique

With the continuous development of the photovoltaic industry, new requirements have been put forward for the color of photovoltaic modules. The formation of colored photovoltaic modules generally uses screen printing or UV printing to make the surface of the photovoltaic module present a color pattern. However, the color layer must form a certain fastness on the smooth front plate material before it can be attached to the front plate of the photovoltaic module. On the material.

At present, in order to form the fastness of the color layer on the smooth front plate material, layer liquid is usually used to increase the adhesion of UV ink in UV printing. However, the layer liquid itself is a chemical material composition, which is usually easy to produce during production. Environmental pollution and harm to personnel, and the layer liquid will also produce color deviations on UV inks, greatly reducing the reliability of use; therefore, how to provide a harmless way to improve the color ink and color without affecting the reliability of use? The method of bonding the front panel of photovoltaic modules is a technical problem that needs to be solved urgently.

Contents of the invention

This application provides a method for improving the bonding fastness of color inks and photovoltaic modules to solve the problem in the existing technology that it is difficult to harmlessly improve the bonding fastness of color inks and photovoltaic module front plates on the basis of reliability of use. .

In a first aspect, the present application provides a method for improving the adhesion of color layers in color photovoltaic modules. The method includes:

Modify the front plate material of the photovoltaic module with plasma wind and perform plasma flame treatment to obtain the modified front plate material;

Form a color layer on at least part of the surface of the modified front plate material;

Wherein, the wind speed of the plasma wind is 15cm/s～25cm/s.

Optionally, the distance between the plasma wind outlet and the material surface of the front plate is 5 mm to 20 mm.

Optionally, the distance between the plasma wind outlet and the material surface of the front plate is 8 mm to 15 mm.

Optionally, the arrangement of the air outlets includes staggered arrangement.

Optionally, the aperture of the air outlet is ≥50mm.

Optionally, the front plate material includes at least one of glass, ETFE film, and polymer-based transparent materials.

Optionally, when the front plate material is an ETFE film, the temperature of the plasma flame is ≤80°C.

Optionally, when the front plate material is glass and/or polymer transparent material, the temperature of the plasma flame is <200°C.

Optionally, the timing to start forming the color layer is within 15 minutes after the plasma flame treatment.

Optionally, the color layer thickness of the photovoltaic module is 0.01mm~0.05mm.

Compared with the existing technology, the above technical solutions provided by the embodiments of the present application have the following advantages:

The embodiment of the present application provides a method for improving the bonding fastness of color ink and photovoltaic components. The surface of the front plate material is treated with plasma wind, and the wind speed of the plasma wind is controlled at the same time. Since the plasma wind contains a large number of charged energy particles ( During the process of bombarding the front plate material with electrons, impurities such as ambient gas, water vapor, and organic matter adsorbed on the surface of the front plate material are bombarded, cleaning and activating the surface, and increasing the surface energy. When the color layer is printed and deposited, the color ink The thin film atoms or molecules in the film can better infiltrate the substrate, ensuring the true color of the color ink, and improving the reliability of the photovoltaic module. At the same time, when the charged energy particles (electrons) in the plasma wind bombard the surface of the front plate material, Within the controlled wind speed, many pits and pores will be formed on the surface of the microscopic front plate material. During the deposition process, the thin film atoms or molecules in the color ink enter such formed pits or pores, thereby generating a mechanical locking force and improving the quality of the ink. Compared with the traditional coating liquid, the surface cleaning and activation treatment of the front plate material through the physical method of plasma wind can achieve harmless treatment based on the reliability of use. Improve the bonding fastness between color ink and photovoltaic module front plate.

Description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor.

Figure 1 is a schematic flow chart of the method provided by the embodiment of the present application;

Figure 2 is a schematic diagram of the actual working of the plasma wind and front plate material provided by the embodiment of the present application;

Figure 3 is a schematic diagram of the working distance between the plasma head and the front plate material that generates plasma wind provided by the embodiment of the present application;

Figure 4 is a bottom view of the working equipment in a staggered arrangement of the plasma head that generates plasma wind and the front plate material provided by the embodiment of the present application;

Figure 5 is a schematic diagram of the working equipment in the staggered arrangement of the plasma head and the front plate material for generating plasma wind provided by the embodiment of the present application;

Figure 6 is a schematic structural diagram of a photovoltaic module prepared by the method provided in the embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Unless otherwise specified, various raw materials, reagents, instruments and equipment used in this application can be purchased in the market or prepared by existing methods.

As shown in Figure 1, this application provides a method for improving the bonding fastness of color ink and photovoltaic modules. The method includes:

S1. Modify the front plate material of the photovoltaic module with plasma wind and perform plasma flame treatment to obtain the modified front plate material;

S2. Form a color layer on at least part of the surface of the modified front plate material;

Wherein, the wind speed of the plasma wind is 15cm/s～25cm/s.

In the embodiment of the present application, the positive effect of controlling the wind speed of the plasma wind to be 15cm/s to 25cm/s is that within the range of this wind speed, the high-energy particles (electrons) in the plasma wind can not only effectively remove the particles adsorbed on the front Impurities such as ambient gas, water vapor, and organic matter on the panel material can also bombard the surface of the front panel material to produce a rough surface, which improves the bonding strength of the UV ink and the photovoltaic module front panel material. Therefore, controlling the plasma wind speed can not only effectively remove impurities Impurities adsorbed on the front plate material can also ensure the formation of rough surfaces containing pits or pores, ensuring that the color difference on the front plate after UV printing is small, and at the same time improving the bonding fastness of the color and the front plate material to achieve On the basis of reliability of use, it harmlessly improves the bonding fastness of color ink and photovoltaic module front plate.

Since the plasma wind generation stage generally has a temperature, when the high-energy particles (electrons) in the plasma wind are used to bombard the front plate material, the impurities can not only be bombarded by the high-energy particles (electrons) in the plasma wind, but also the impurities can be bombarded by the high-energy particles (electrons) in the plasma wind. The temperature heats the front plate material, making it easier for the front plate material to be bombarded by high-energy particles (electrons) of the plasma wind to create pits and pores, thereby better improving the surface roughness of the front plate material, thereby improving the UV ink and front plate material. Bonding fastness of board materials.

The machine that generates the plasma wind is a plasma generator. Its model is PG-1000ZF jet low-temperature plasma treatment machine, which is provided by Nanjing Suman Plasma Technology Co., Ltd. Its working power is 1000W, and the temperature of the plasma wind ejected is 200°C. the following.

In some embodiments, forming a color layer on at least part of the surface of the modified front plate material specifically includes:

UV printing is performed on at least part of the surface of the modified front plate material with UV ink to obtain a color layer.

In some optional implementations, the distance between the plasma wind outlet and the material surface of the front plate is 5 mm to 20 mm.

In the embodiment of the present application, the positive effect of controlling the distance between the plasma wind outlet and the front plate material surface to be 5 mm to 20 mm is that within this distance range, the plasma wind speed can be guaranteed to be between 15 cm/s and 25 cm/s. Within this range, it is also ensured that the high-energy particles (electrons) of the plasma wind bombard the front plate material to form pits and pores on the microscopic rough surface, thus ensuring the bonding fastness of the UV ink and the front plate material.

In some optional implementations, as shown in Figures 2 and 3, the distance between the plasma wind outlet and the material surface of the front plate is 8 mm to 15 mm.

In the embodiment of the present application, the positive effect of further refining the distance between the plasma wind outlet and the surface of the front plate material to 8 mm to 15 mm is to ensure that when the front plate material is glass, the plasma wind speed is between 15 cm/s and 25 cm /s within this range, it also ensures the pits and pores on the microscopic rough surface formed by the high-energy particles (electrons) of the plasma wind bombarding the front plate material, thereby ensuring the bonding fastness of the UV ink and the front plate material.

In some optional implementations, as shown in Figures 4 and 5, the arrangement of the air outlets includes a staggered arrangement.

In the embodiment of the present application, the specific arrangement of the air outlets is controlled, and the working efficiency of the air outlets is improved through staggered arrangement to ensure the effect of cleaning and activating the surface of the front plate material.

In some optional embodiments, the aperture of the air outlet is ≥50 mm.

In the embodiment of the present application, the positive effect of controlling the aperture of the air outlet to be above 50 mm is that within this aperture range, the plasma wind area can be guaranteed when the plasma wind is ejected through the air outlet, thereby ensuring the plasma wind area, thereby improving the plasma wind impact The effect of surface cleaning and activation treatment on the front panel material.

In some optional embodiments, the front plate material includes at least one of glass, ETFE film, and polymer-based transparent materials.

In the embodiments of the present application, controlling the specific composition of the front plate material can cover the front plate materials of most photovoltaic modules, thereby improving the universality of the method of the present application.

Polymer transparent materials refer to polymer transparent materials commonly used in photovoltaic modules, such as acrylic transparent plate materials.

In some optional embodiments, when the front plate material is an ETFE film, the temperature of the plasma flame is ≤80°C.

In the embodiment of this application, the front plate material and the corresponding plasma flame temperature are controlled. Since the ETFE film has a low temperature tolerance, an excessively high plasma flame temperature will cause the ETFE film to be damaged, thereby affecting the combination of the UV ink and the front plate material.

In some optional embodiments, when the front plate material is glass and/or polymer-based transparent material, the temperature of the plasma flame is <200°C.

In the embodiment of this application, the front plate material and the corresponding plasma flame temperature are controlled. Since glass materials and polymer transparent materials have high tolerance, excessive temperature will cause damage to the front plate material and affect the performance of photovoltaic modules. normal function.

In some optional embodiments, the start timing of UV printing is within 15 minutes after the plasma flame treatment.

In the embodiment of the present application, the positive effect of controlling the start time of UV printing to be within 15 minutes after plasma flame treatment is because the prerequisite material after plasma flame treatment is relatively softened, which can speed up the diffusion speed of UV ink, thereby ensuring that the UV ink and front plate The bonding strength of materials.

In some optional implementations, as shown in Figure 6, the color layer thickness of the photovoltaic module is 0.01 mm to 0.05 mm.

In the embodiment of the present application, the positive effect of controlling the color layer thickness of the photovoltaic module to 0.01mm~0.05mm is to ensure that the UV ink can adhere to the front plate material within the range of the color layer thickness, thereby making the surface of the photovoltaic module The color is firm and the UV ink is not too thick to affect the light transmittance of the front plate material.

The present application will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present application and are not intended to limit the scope of the present application. Experimental methods without specifying specific conditions in the following examples are usually measured in accordance with national standards. If there is no corresponding national standard, general international standards, conventional conditions, or conditions recommended by the manufacturer shall be followed.

Example 1

As shown in Figure 1, a method to improve the adhesion of color layers in color photovoltaic modules includes:

S1. Modify the front plate material of the photovoltaic module with plasma wind and perform plasma flame treatment to obtain the modified front plate material;

S2. Use UV ink to perform UV printing on the surface of the modified front plate material to obtain the front plate of the photovoltaic module as shown in Figure 6;

Among them, the wind speed of plasma wind is 25cm/s.

The distance between the plasma wind outlet and the surface of the front plate material is 10mm.

The front panel material is glass.

The start time of UV printing is within 15 minutes after plasma flame treatment.

The color layer thickness of the photovoltaic module is 0.02mm.

Example 2

Compare Example 2 and Example 1. The differences between Example 2 and Example 1 are:

The wind speed of plasma wind is 15cm/s.

The distance between the plasma wind outlet and the surface of the front plate material is 15mm.

The front plate material is ETFE film.

The color layer thickness of the photovoltaic module is 0.01mm.

Example 3

Compare Example 3 and Example 1. The differences between Example 3 and Example 1 are:

The wind speed of plasma wind is 25cm/s.

The distance between the plasma wind outlet and the surface of the front plate material is 20mm.

The start time of UV printing is within 15 minutes after plasma flame treatment.

The color layer thickness of the photovoltaic module is 0.05mm.

Comparative example 1

Compare Comparative Example 1 and Example 1. The difference between Comparative Example 1 and Example 1 is:

The front panel material is processed directly with coating fluid, and plasma wind is not used to process the front panel material.

Comparative example 2

Compare Comparative Example 2 and Example 1. The difference between Comparative Example 2 and Example 1 is:

The wind speed of plasma wind is 10cm/s.

The distance between the plasma wind outlet and the surface of the front plate material is 3mm.

Comparative example 3

Compare Comparative Example 3 and Example 1. The difference between Comparative Example 3 and Example 1 is:

The wind speed of plasma wind is 30cm/s.

The distance between the plasma wind outlet and the surface of the front plate material is 25mm.

Relevant experiments and effect data:

The photovoltaic module products obtained in the Examples and Comparative Examples were collected respectively, and performance testing was performed. The results are shown in Table 1.

Experimental test method:

Hundred grid shedding test: tested in accordance with GB/T9286-98 standard.

Table 1 Performance data of photovoltaic module products obtained in each embodiment and comparative example

Specific analysis of Table 1:

Both ISO and ASTM are the B number test parameters of the adhesion test of the 100-Grid test. Both of them comprehensively reflect the adhesion of UV ink and photovoltaic modules.

It can be seen from the data of Examples 1-3:

Through the method of this application, the surface cleaning and activation treatment of the front plate material through the physical method of plasma wind can harmlessly improve the bonding fastness of the color ink and the photovoltaic module front plate on the basis of reliability of use, which can ensure The ASTM grade of the front panel of the photovoltaic module is 4B in the hundred grid test.

In the method of this application, since the wind speed of the plasma wind is controlled, the front plate material will not be distorted and scratched under the naked eye; at the same time, because this application uses a staggered arrangement of the plasma wind spray heads, it improves its work While being efficient, it can also control part or all of the surface of the front panel material.

The method of the present application is different from the traditional chemical treatment method of coating liquid. It directly adopts the physical treatment method of plasma wind, which does not produce waste liquid pollution and is more environmentally friendly.

It can be seen from the data of Comparative Examples 1-3:

If the plasma wind treatment method of the present application is not used, or the parameters set are not within the scope of protection of the present application, the front panel of the resulting photovoltaic module will not perform well in the 100-grid test.

Various embodiments of the present application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and simplicity and should not be understood as a hard limit to the scope of the present application; therefore, the described scope should be considered The description has specifically disclosed all possible subranges as well as the single numerical values within that range. For example, a description of a range from 1 to 6 should be considered to have specifically disclosed subranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and A single number within the stated range, such as 1, 2, 3, 4, 5, and 6, applies regardless of the range. Additionally, whenever a numerical range is indicated herein, it is intended to include any cited number (fractional or whole) within the indicated range.

In this application, unless otherwise specified, the directional words used such as "upper" and "lower" specifically refer to the direction of the drawing in the drawings. In addition, in the description of this application, the terms "including", "including" and the like mean "including but not limited to".

In this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or sequence. In this article, "and/or" describes the relationship between associated objects, indicating that there can be three relationships. For example, A and/or B can mean: A alone exists, A and B exist simultaneously, and B exists alone. . Where A and B can be singular or plural. In this article, "at least one" means one or more, and "plurality" means two or more. "At least one", "at least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, "at least one of a, b, or c", or "at least one of a, b, and c" can mean: a, b, c, a-b ( That is, a and b), a-c, b-c, or a-b-c, where a, b, and c can be single or multiple respectively.

The above descriptions are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (5)

1. A method for improving the adhesion of the color layer in a color photovoltaic component, characterized in that the color photovoltaic component includes a front plate material, and the method includes: Modify the front plate material with plasma wind and perform plasma flame treatment to obtain the modified front plate material; UV printing is performed on at least part of the surface of the modified front plate material with UV ink to obtain a color layer; Wherein, the wind speed of the plasma wind is 15cm/s～25cm/s, the distance between the air outlet of the plasma wind and the material surface of the front plate is 5mm～20mm, and the arrangement of the air outlets includes a staggered arrangement , the aperture of the air outlet is ≥50mm, the opportunity to form the color layer is within 15 minutes after the plasma flame treatment, and the thickness of the color layer of the photovoltaic module is 0.01mm~0.05mm. 2. The method according to claim 1, characterized in that the distance between the air outlet of the plasma wind and the surface of the front plate material is 8 mm to 15 mm. 3. The method of claim 1, wherein the front plate material includes at least one of glass, ETFE film, and polymer-based transparent materials. 4. The method according to claim 3, characterized in that when the front plate material is an ETFE film, the temperature of the plasma flame is ≤80°C. 5. The method according to claim 3, characterized in that when the front plate material is glass and/or polymer transparent material, the temperature of the plasma flame is <200°C.