Colored film, full-color photoelectric functional material and preparation method

Abstract

The invention provides a colored film, a full-color photoelectric functional material and a preparation method. The colored film comprises a first film layer and a second film layer connected with the first film layer in a sticking manner, wherein a color layer is arranged on one side, close to the second film layer, of the first film layer in the thickness direction of the first film layer, removable first release paper is arranged on one side, away from the color layer, of the first film layer, and the first film layer with the first release paper removed can be adhered to the surface of a target object; a protective layer is arranged on one side of the second film layer in the thickness direction of the second film layer, removable second release paper is arranged on one side, deviating from the protective layer, of the second film layer, and the second film layer with the second release paper removed is adhered to the color layer to form a color adhesive film; the thickness directions of the first film layer and the second film layer are the same. The first film layer with the color layer is attached to the surface of the target object to achieve the color appearance display effect, and meanwhile the second film layer is arranged on the outer side of the color layer to protect the color layer. In addition, the color film can be directly removed from the surface of the target object and replaced with a new color film.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic modules, and in particular to a color film, a full-color optoelectronic functional material, and a preparation method thereof. Background Art

[0002] Most existing photovoltaic panels are bluish-black, making them difficult to blend in with the surrounding architectural landscape. This not only affects the overall aesthetics of the building but also limits the widespread application of photovoltaic technology in both urban and rural architecture. However, the emergence of colored photovoltaic panels offers a new approach to addressing this issue.

[0003] Existing photovoltaic modules come in a variety of colors, suitable for various applications. The current method for coloring photovoltaic modules is to use ink to create a color layer. In current color photovoltaic modules, the color layer is typically applied to both the adhesive film and the surface of the photovoltaic module. Both layers are exposed to air and are susceptible to fading from UV radiation, dust absorption, and poor stain resistance. They are also easily scratched and fall off, and lack durability. Furthermore, because the color layer is sprayed onto the photovoltaic module, replacing it is a cumbersome process. Summary of the Invention

[0004] In response to the above-mentioned prior art, and to solve at least one of the above-mentioned technical problems, the embodiments of the present application propose a color film, a full-color optoelectronic functional material, and a preparation method. This application achieves a color display effect by attaching a first film layer having a color layer on one side to the surface of a target object through a second film layer. Furthermore, the color film can be directly removed from the target surface and replaced with a new one, achieving the purpose of rapid replacement. The color film proposed in this application is attached to a photovoltaic module to form a full-color optoelectronic functional material with a color display effect.

[0005] According to a first aspect of the present application, a color film is proposed, which includes a first film layer and a second film layer adhesively connected to the first film layer; wherein the first film layer has a color layer on a side close to the second film layer in the thickness direction, and a removable first release paper is provided on the side away from the color layer, and the first film layer after removing the first release paper can be adhered to the surface of a target object; the second film layer has a protective layer on one side in the thickness direction, and a removable second release paper is provided on the side away from the protective layer, and the second film layer after removing the second release paper is adhered to the color layer to form a color film; the first film layer and the second film layer have the same thickness direction.

[0006] In some embodiments, the first film layer further includes a first substrate layer, which includes an upper surface and a lower surface in the thickness direction of the first film layer; the colored layer is arranged above the upper surface of the first substrate layer; and the first release paper is arranged below the lower surface of the first substrate layer.

[0007] In some embodiments, the first film layer further includes a treatment layer; the treatment layer is located between the color layer and the upper surface of the first substrate layer, and the bonding force between the color layer and the treatment layer is ≥4B.

[0008] In some embodiments, the first substrate layer has a thickness of ≥0.1 mm and a transmittance of ≥90%, and is made of a transparent polymer material; The high molecular polymer material includes at least one of ethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer.

[0009] In some embodiments, the first release paper is disposed below the lower surface of the first substrate layer via a first adhesive layer; The first adhesive layer is composed of a pressure-sensitive adhesive and has water resistance; the thickness of the first adhesive layer is ≥0.025 mm, and the 180-degree peeling force between the first adhesive layer and the surface of the target object is greater than 8N / 25mm.

[0010] In some embodiments, the second film layer includes a second substrate layer, which includes an upper surface and a lower surface in the thickness direction of the second film layer; the protective layer is arranged above the upper surface of the second substrate layer; and the second release paper is arranged below the lower surface of the second substrate layer.

[0011] In some embodiments, the second substrate layer has a thickness of ≤0.1 mm and a transmittance of ≥90%; and is made of a transparent polymer material; The high molecular polymer material includes at least one of ethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer.

[0012] In some embodiments, the protective layer includes an anti-UV coating layer attached to the second substrate layer, and the anti-UV coating layer has an ultraviolet blocking rate of ≥95% and an anti-scratch grade of ≥2H.

[0013] In some embodiments, the protective layer includes an anti-fouling coating; the anti-fouling coating is located on one side of the UV protection coating and away from the second substrate layer to prevent hot spots caused by dirt covering.

[0014] In some embodiments, the second release paper is arranged below the lower surface of the second substrate layer through a second adhesive layer; the second adhesive layer is composed of a pressure-sensitive adhesive and has water resistance and a thickness ≥ 0.025 mm, and the 180-degree peeling force between the second adhesive layer and the color layer is greater than 20 N / 25 mm.

[0015] According to the second aspect of the present application, a full-color optoelectronic functional material is proposed, comprising a photovoltaic module and the color film described in any of the above embodiments composited on its surface; the color film is arranged on the outer surface of the photovoltaic module.

[0016] According to the third aspect of the present application, a method for preparing a full-color optoelectronic functional material comprises the following steps: Remove the second release paper on one side of the second film layer, and stick and press the side of the second release paper removed toward the color layer of the first film layer, so that the first film layer and the second film layer are combined and then placed for 4-24 hours to obtain a composite film; The full-color optoelectronic functional material described in any of the above embodiments can be obtained by removing the first release paper of the composite film and attaching the side from which the first release paper is removed to the surface of a photovoltaic module.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A schematic structural diagram of a color film provided in one embodiment of the present application; Figure 2 A schematic structural diagram of a color film provided in another embodiment of the present application; Figure 3 A schematic structural diagram of a color film provided in one embodiment of the present application; Figure 4 A schematic structural diagram of a full-color optoelectronic functional material provided in one embodiment of the present application; Figure 5 A flow chart for preparing a full-color optoelectronic functional material according to an embodiment of the present application; In the figure, 1. First substrate layer; 2. Second substrate layer; 3. Anti-UV coating; 4. Anti-fouling coating; 5. Color layer; 6. Treatment layer; 7. First release paper; 8. Second release paper; 9. Photovoltaic module; 10. Second adhesive layer; 11. First adhesive layer. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, 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 are only embodiments of a part of the present application, not all embodiments, and are not intended to limit the scope of disclosure of the present application. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts disclosed in the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0020] The accompanying drawings illustrate schematic diagrams of the structures of the embodiments disclosed herein. These figures are not drawn to scale; for the purpose of clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0021] Please refer to the attached Figure 1 The figure shows an embodiment of the present application. Specifically, according to the first aspect of the present application, a color film is proposed, which includes a first film layer and a second film layer adhered to the first film layer; the first film layer has a color layer 5 on the side close to the second film layer in the thickness direction, and a removable first release paper 7 is provided on the side away from the color layer 5. The first film layer after removing the first release paper 7 can be adhered to the surface of the target object; the second film layer has a protective layer on one side in the thickness direction, and a removable second release paper 8 is provided on the side away from the protective layer. The second film layer after removing the second release paper 8 is adhered to the color layer 5 to form a color film; the first film layer and the second film layer have the same thickness direction.

[0022] The color film of the present application includes a first film layer and a second film layer, and the first film layer includes an upper surface and a lower surface on both sides of its thickness direction, wherein the thickness direction of the first film layer is described as an up-down direction. Figure 1 The arrows are for illustration purposes only. The first film layer has a certain thickness in the vertical direction, meaning it has upper and lower surfaces that face each other. One side of the first film layer has a color layer 5, which in this example forms the upper surface of the first film layer, while the lower surface of the first film layer is provided with a removable first release liner 7. After removing the first release liner 7 from the first film layer, the side with the first release liner 7 removed can be attached to the surface of an object.

[0023] The thickness direction of the first film layer and the second film layer of the present application is the same, so the second film layer includes an upper surface and a lower surface on both sides in the up-down direction, wherein the upper surface of the second film layer includes a protective layer, and the lower surface thereof includes a removable second release paper 8. The second film layer is removed from the second release paper 8, and the side of the second film layer from which the second release paper 8 is removed is bonded to the color layer 5 to form a color film. In other words, because the thickness direction of the first film layer and the second film layer is the same, that is, the second film layer has a certain thickness in the up-down direction, it includes an upper surface and a lower surface, the upper surface is composed of the protective layer, and the lower surface is composed of the second release paper 8. By removing the second release paper 8 from the lower surface of the second film layer and positioning the color layer 5 toward the side of the second film layer from which the second release paper 8 is removed, the first film layer and the second film layer from which the second release paper 8 is removed are bonded to form a composite film. Then, the first release paper 7 from the lower surface of the first film layer is removed, and the composite film from which the first release paper 7 is removed can be attached to the surface of the target object, so that the target object achieves a color appearance display effect.

[0024] In addition, in this embodiment, there is no restriction on the shape of the color film. The example color film is a flat surface or an embossed surface, etc., wherein the color film is an embossed surface. Due to the increase in the light-receiving area, the reflectivity of light is reduced. If the color film is applied to the photovoltaic module 9 to form a full-color photovoltaic functional material, the embossed surface color film can increase the power of the photovoltaic module 9. Compared with the related technology of using glass material to set the color layer 5 and setting the color layer 5 in the photovoltaic module 9, the present application does not require specially added reflective structures and light source receiving components, and can achieve the same effect through a simple operation process, which simplifies the production work and is suitable for promotion and use.

[0025] In some embodiments, the colored film is a flexible film. Those skilled in the art will appreciate that the flexible film is easier to adhere to the target object. In addition, when the flexible film is applied to the photovoltaic module 9, it can also increase the impact resistance of the photovoltaic module 9, wherein the surface of the photovoltaic module 9 is generally made of glass. After being impacted, on the one hand, the flexible film can absorb part of the impact energy, and on the other hand, the flexible film adheres to the glass. Even if the glass is shattered, the flexible film is not easy to break due to its flexibility, so the shattered glass still adheres to the flexible film without fragments falling off. Therefore, the present application combines a first film layer and a second film layer having a colored layer 5 on one side, and obtains a colored film without exposing the colored layer 5 to the air, and then affixes the colored film to the surface of the target object to achieve the effect of a colored appearance display. In addition, the colored film can be directly removed from the surface of the target object and replaced with a new colored film, thereby achieving the purpose of quick replacement.

[0026] In some embodiments, the first film layer also includes a first substrate layer 1, which includes an upper surface and a lower surface in the thickness direction of the first film layer; the colored layer 5 is arranged above the upper surface of the first substrate layer 1; and the first release paper 7 is arranged below the lower surface of the first substrate layer 1.

[0027] The first film layer includes a first substrate layer 1. In other words, in this embodiment, the first film layer includes a first substrate layer 1 and a color layer 5. The first substrate layer 1 is a transparent material and has a certain thickness in the vertical direction. In other words, Figure 1 The first substrate layer 1 is made of a transparent material with a certain thickness, and has an upper surface and a lower surface relative to each other in the upper and lower directions. For example, the first substrate layer 1 is made of a polymer material, and the polymer material includes at least one of polyethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer, so that the first substrate layer 1 has good bonding with the first release paper 7 and the color layer 5 respectively.

[0028] This embodiment is illustrated by taking the first substrate layer 1 made of polyethylene terephthalate as an example, wherein the thickness of the first substrate layer 1 in the up and down directions is ≥0.1mm; the transmittance is ≥90%, and its higher transmittance will not affect the influence of the color film on the power generation efficiency of the full-color photovoltaic functional material when it is used, wherein the thickness of the first substrate layer 1 in the up and down directions is ≥0.1mm, so that the color film has a certain impact resistance, which greatly increases the impact resistance of the photovoltaic component 9. When it is used to cover the surface of the photovoltaic component 9, it can reduce the influence of air moisture on the full-color photovoltaic functional material, and greatly improve the service life of the full-color photovoltaic.

[0029] In this application, the color layer 5 and first release liner 7 are disposed on the upper and lower surfaces of the first substrate layer 1, respectively. In other words, the color layer 5 is disposed above the upper surface of the first substrate layer 1, and the first release liner 7 is disposed below the lower surface of the first substrate layer 1 via a first adhesive layer 11. The first adhesive layer 11 is composed of a pressure-sensitive adhesive with water-resistant properties. The thickness of the first adhesive layer 11 is ≥ 0.025 mm, and the 180-degree peel force between the first adhesive layer 11 and the target surface is greater than 8 N / 25 mm. In this application, by removing the first release liner 7, the first film layer can be adhered to the target surface, while the color layer 5 is facing away from the target surface.

[0030] In some embodiments, the first film layer further includes a treatment layer 6 ; the treatment layer 6 is located between the color layer 5 and the upper surface of the first substrate layer 1 , and the bonding force between the color layer 5 and the treatment layer 6 is ≥4B.

[0031] The first film layer further includes a treatment layer 6, as shown in Figure 2. In this embodiment, treatment layer 6 is a UV coating. In other words, the UV coating is a UV-curable ink printed on the upper surface of the first substrate layer 1 via UV printing, screen printing, or other methods. Those skilled in the art will understand that UV-curable ink refers to an ink that utilizes ultraviolet light of varying wavelengths and energies to polymerize monomers in the ink binder, forming a polymer and allowing the ink to form a film and dry. UV-curable inks offer strong adhesion, a smooth surface, rapid film curing, and ease of use.

[0032] In this embodiment, the setting of the UV coating can set the color layer 5 on the UV coating. For example, the color layer 5 is sprayed on the UV coating using full-color micro-layer technology, and the bonding force between the color layer 5 and the processing layer 6 is ≥4B, so that the color layer 5 and the first substrate layer 1 are tightly connected, preventing the color layer 5 from separating from the first substrate layer 1 or the image from being damaged when the color film is replaced.

[0033] In some embodiments, the second film layer includes a second substrate layer 2, which includes an upper surface and a lower surface in the thickness direction of the second film layer; the protective layer is arranged above the upper surface of the second substrate layer 2; and the second release paper 8 is arranged below the lower surface of the second substrate layer 2.

[0034] The second substrate layer 2 is made of a transparent material and has a certain thickness in the vertical direction. In other words, the second substrate layer 2 is made of a transparent material with a certain thickness and has an upper surface and a lower surface relative to each other in the vertical direction. Figure 1 and Figure 2 For example, the second substrate layer 2 is made of a high molecular polymer material, and the high molecular polymer material includes at least one of polyethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer.

[0035] This embodiment is illustrated by taking the second substrate layer 2 made of polyethylene terephthalate as an example, wherein the thickness of the second substrate layer 2 in the up and down directions is ≤0.1mm; the transmittance is ≥90%, and its higher transmittance will not affect the power generation efficiency of the full-color optoelectronic functional material when the color film is used, wherein the thickness of the second substrate layer 2 in the up and down directions is ≤0.1mm, so that light can pass through as much as possible, thereby preventing it from affecting the power generation efficiency of the photovoltaic component 9 when the color film is used.

[0036] The second release paper 8 is arranged below the lower surface of the second substrate layer 2 through the second adhesive layer 10, and the protective layer is arranged above the upper surface of the second substrate layer 2. The protective layer is applied above the upper surface of the second substrate layer 2 to achieve full coverage of the upper surface of the second substrate layer 2 by the protective layer. At the same time, the color layer 5 is arranged below the second film layer. The setting of the protective layer can reduce the influence of ultraviolet rays on the color layer 5, and greatly reduce the influence of ultraviolet rays and air moisture on the color layer 5, thereby greatly improving the service life of the color film.

[0037] As the name suggests, the second adhesive layer 10 is formed by applying adhesive liquid. It is composed of a pressure-sensitive adhesive with water resistance, a thickness of ≥ 0.025 mm, and a 180-degree peel strength greater than 20 N / 25 mm from the color layer 5. The second release paper 8 is removably attached to the second adhesive layer 10, protecting the surface of the second adhesive layer 10. When the color film is in use, the second adhesive layer 10 can be removed and the exposed second adhesive layer 10 attached to the color layer 5.

[0038] For example, the first adhesive layer 11 and the second adhesive layer 10 are acrylic or silicone pressure-sensitive adhesives. When using the color film, the second release paper 8 on the lower surface of the second substrate layer 2 can be removed, and the second adhesive layer 10 can be laminated and pressed against the color layer 5 to achieve a tight bond between the first film layer and the second film layer with the second release paper 8 removed. The 180-degree peel force between the second adhesive layer 10 and the color layer 5 is greater than 20N / 25mm. The first release paper 7 on the lower surface of the first substrate layer 1 is then removed, and the first adhesive layer 11 is laminated and pressed against the surface of the target object. The 180-degree peel force between the first adhesive layer 11 and the target object is greater than 8N / 25mm.

[0039] Because the 180-degree peeling force between the second adhesive layer 10 and the color layer 5 is greater than the 180-degree peeling force between the first adhesive layer 11 and the target surface, when the color film is replaced, the color film can be separated from the first adhesive layer 11 and the target surface, thereby achieving quick replacement of the color film.

[0040] In some embodiments, the protective layer includes an anti-UV coating 3 attached to the second substrate layer 2 , and the anti-UV coating 3 has an ultraviolet blocking rate of ≥95% and an anti-scratch grade of ≥2H.

[0041] In this embodiment, the protective layer includes an anti-ultraviolet coating 3 such as Figure 1 and Figure 2 As shown, the anti-UV coating 3 is attached to the upper surface of the second substrate layer 2 and on the side facing away from the second release paper 8, wherein the UV blocking rate of the anti-UV coating 3 is ≥95% and the scratch resistance level is ≥2H, which reduces the influence of ultraviolet rays on the color, and has certain wear resistance and scratch resistance, and also reduces the influence of air vapor on the color layer 5, thereby improving the service life of the full-color photovoltaic.

[0042] It should be noted that the UV protection coating 3 in this embodiment is also a transparent film to prevent the application of the colored film from affecting the power generation efficiency of the full-color photovoltaic functional material. For example, the UV protection coating 3 is prepared by brushing a solution containing particles such as zinc oxide and titanium dioxide onto one side of the second substrate layer 2. It achieves a high barrier efficiency by scattering / absorbing ultraviolet rays without affecting visible light transmittance.

[0043] In some embodiments, the protective layer includes an anti-fouling coating 4 ; the anti-fouling coating 4 is located on one side of the UV protection coating 3 and away from the second substrate layer 2 to prevent hot spots caused by dirt covering.

[0044] Wherein, the protective layer comprises an antifouling coating 4 such as Figure 3 As shown, in this embodiment, the protective layer includes an antifouling coating 4 and an anti-UV coating 3. The anti-UV coating 3 is attached to the upper surface of the second substrate layer 2, facing away from the color layer 5, and the antifouling coating 4 is located above the upper surface of the anti-UV coating 3, facing away from the second substrate layer 2. In other words, the antifouling coating 4 has upper and lower surfaces on both sides in the vertical direction. The upper surface is exposed to the air, and the lower surface is arranged in contact with the upper surface of the anti-UV coating 3 to prevent hot spots caused by dirt.

[0045] It should be noted that the antifouling coating 4 in this embodiment is also a transparent film, preventing the color film from affecting the power generation efficiency of the full-color photovoltaic functional material. For example, the antifouling coating 4 is prepared by applying a solution containing a UV-curable resin and / or a solution containing silicon carbide (SiC) to one side of the UV protection coating 3. While having a certain hardness, such as 2H-3H, it further improves the wear resistance of the color film without affecting visible light transmittance.

[0046] Therefore, the color layer 5 in the color film of the present application is not exposed to the air. The protective layer protects the color layer 5, which can reduce the influence of ultraviolet rays on the color, and greatly reduce the influence of ultraviolet rays and air moisture on the color layer 5. It also improves the service life of the full-color photovoltaic and increases the impact resistance of the photovoltaic module 9. It solves the defects in the related technology that the color layer 5 is generally arranged on the surface of the back adhesive film and the surface of the photovoltaic module 9, and the color layer 5 is exposed to the air and is easily faded by ultraviolet radiation or absorbs dust and is not anti-fouling, and the color layer 5 is easily scratched and dropped and has low firmness.

[0047] In addition, the second adhesive layer 10 and the first adhesive layer 11 both have adhesive properties and are also water-resistant. After the color film is applied, the second adhesive layer 10 is bonded to the color layer 5. The color layer 5 itself also has a certain degree of water-resistant properties. The color layer 5 and the second adhesive layer 10 will not produce an adhesive reaction, and the second adhesive layer 10 and the first adhesive layer 11 are immovable. Therefore, the color layer 5 will not be damaged when the color layer 5 and the second adhesive layer 10 are attached or removed.

[0048] According to the second aspect of the present application, a full-color optoelectronic functional material is proposed, including a photovoltaic component 9 and a color film according to any of the above embodiments composited on its surface; the color film is arranged on the outer surface of the photovoltaic component 9.

[0049] In other words, full-color photovoltaic functional materials consist of two parts: a photovoltaic module and a composite colored film on its surface. The colored film is a colored layer of photovoltaic material, which adds color and pattern to the appearance of traditional photovoltaic modules, thereby achieving an external visual effect that blends in with the environment. This full-color photovoltaic functional material can be customized to meet diverse needs and application scenarios with different colors, patterns, and functions.

[0050] Among them, this application proposes full-color optoelectronic functional materials such as Figure 4 As shown, it includes a photovoltaic component 9 and a color film in any of the above embodiments. The second release paper 8 on one side of the second film layer can be removed and then compounded with the first film layer to form a color film; then the first release paper 7 on one side of the first film layer is removed, and it can be attached to the photovoltaic component 9 manually or by machine so that the color layer 5 is not exposed to the air, and a full-color photovoltaic functional material can be obtained, wherein the color layer 5 is not limited to the picture; it can also be produced as a stock product first, because the color layer 5 is on the non-air side, the warranty time is long, and it can be processed immediately when there is an order, which has strong flexibility and safety.

[0051] In this embodiment, the color layer 5 is located on the non-air side, protecting it from rain and air, significantly extending the life of the color film and preventing scratches during transportation. Furthermore, the color film is scratch-resistant and UV-resistant, effectively reducing surface damage during transportation and significantly shielding it from UV rays. This reduces color aging and prolongs color retention, while also effectively protecting the photovoltaic modules 9, maintaining good power generation performance and extending their service life. The air side is coated with an anti-fouling coating 4, preventing dust from accumulating and remaining clean after being flushed by rain, preventing hot spots.

[0052] At the same time, when the color film reaches the end of its service life, it can be peeled off from the target surface by applying a peeling force greater than 20N / 25mm at 180 degrees and replaced with a new color film. In addition, the full-color optoelectronic functional material of this application is highly weather-resistant, easy to produce and use, and easy to replace the color layer 5 and transport. When replacing, there is no need to return to the factory for replacement, and it can be replaced on site.

[0053] According to the third aspect of the present application, a method for preparing a full-color optoelectronic functional material is as follows Figure 5 As shown, the following steps are included: S1: Remove the second release paper 8 on one side of the second film layer, and stick and press the side of the removed second release paper 8 toward the color layer 5 of the first film layer, so that the first film layer and the second film layer are combined and then placed for 4-24 hours to obtain a composite film; S2: The first release paper 7 of the composite film is removed, and the side from which the first release paper 7 is removed is attached to the surface of the photovoltaic module 9 to obtain the full-color optoelectronic functional material in any of the above embodiments.

[0054] For example, in S1, the second release paper 8 on the lower surface of the second film layer can be removed, and the color layer 5 of the first film layer is attached and pressed toward the second film layer on the side where the second release paper 8 is removed, and the second adhesive layer 10 is attached and pressed to the color layer 5 to achieve close attachment of the second film layer with the second release paper 8 removed and the first film layer. After the first film layer and the second film layer are combined, they are placed for 4-24 hours to obtain a composite film. After the first film layer and the second film layer are combined, the placement time can be reduced by keeping the temperature constant or keeping the environment at about 40 degrees. At the same time, the 180-degree peeling force of the second adhesive layer 10 and the color layer 5 is greater than 20N / 25mm.

[0055] In S2, the first release paper 7 is removed from the lower surface of the composite film and laminated to the surface of the photovoltaic module 9, thereby forming a full-color photovoltaic functional material. The 180-degree peel force between the first adhesive layer 11 and the surface of the photovoltaic module 9 is greater than 8N / 25mm. Because the 180-degree peel force between the second adhesive layer 10 and the color layer 5 is greater than the 180-degree peel force between the first adhesive layer 11 and the target surface, when the color film is replaced, the color film can be separated from the target surface by the first adhesive layer 11, enabling quick replacement of the color film.

[0056] It should be noted that the preparation environment of full-color optoelectronic functional materials should be in a dust-free workshop to reduce dirt caused by dust, which affects the yield and facilitates subsequent replacement.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0059] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A color film, characterized in that: It includes a first film layer and a second film layer adhesively connected to it; wherein the first film layer has a color layer on the side close to the second film layer in the thickness direction, and a removable first release paper is provided on the side away from the color layer, and the first film layer with the first release paper removed can be pasted on the surface of the target object; the second film layer has a protective layer on one side in the thickness direction, and a removable second release paper is provided on the side away from the protective layer, and the second film layer with the second release paper removed is adhered to the color layer to form a color film; the first film layer and the second film layer have the same thickness direction.

2. The color film according to claim 1, characterized in that: The first film layer also includes a first substrate layer, which includes an upper surface and a lower surface in the thickness direction of the first film layer; the colored layer is arranged above the upper surface of the first substrate layer; and the first release paper is arranged below the lower surface of the first substrate layer.

3. The color film according to claim 2, characterized in that: The first film layer further includes a treatment layer; the treatment layer is located between the color layer and the upper surface of the first substrate layer, and the bonding force between the color layer and the treatment layer is ≥4B.

4. The color film according to claim 2, characterized in that: The thickness of the first substrate layer is ≥0.1 mm; the transmittance is ≥90%, and the first substrate layer is made of a transparent polymer material; The high molecular polymer material includes at least one of ethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer.

5. The color film according to claim 2, characterized in that: The first release paper is arranged below the lower surface of the first substrate layer through a first adhesive layer; The first adhesive layer is composed of a pressure-sensitive adhesive and has water resistance; the thickness of the first adhesive layer is ≥ 0.025mm, and a 180-degree peeling force from the target surface is greater than 8N / 25mm.

6. The color film according to any one of claims 1 to 5, characterized in that: The second film layer includes a second substrate layer, which includes an upper surface and a lower surface in the thickness direction of the second film layer; the protective layer is arranged above the upper surface of the second substrate layer; and the second release paper is arranged below the lower surface of the second substrate layer.

7. The color film according to claim 6, characterized in that: The second substrate layer has a thickness of ≤0.1 mm and a light transmittance of ≥90% and is made of a transparent polymer material; The high molecular polymer material includes at least one of ethylene terephthalate, amorphous copolyester, polymethyl methacrylate, polycarbonate, cycloolefin copolymer, transparent nylon, polystyrene, transparent polyvinyl chloride, and styrene-acrylonitrile copolymer.

8. The color film according to claim 6, characterized in that: The protective layer includes an anti-ultraviolet coating layer attached to the second substrate layer, and the anti-ultraviolet coating layer has an ultraviolet blocking rate of ≥95% and an anti-scratch grade of ≥2H.

9. The color film according to claim 8, characterized in that: The protective layer includes an antifouling coating layer; the antifouling coating layer is located on one side of the anti-UV coating layer and away from the second substrate layer to prevent hot spots caused by dirt covering.

10. The color film according to claim 8, characterized in that: The second release paper is arranged below the lower surface of the second substrate layer through a second adhesive layer; the second adhesive layer is composed of a pressure-sensitive adhesive and has water resistance, its thickness is ≥0.025mm, and its 180-degree peeling force with the color layer is greater than 20N / 25mm.

11. A full-color optoelectronic functional material, characterized in that: The invention comprises a photovoltaic module and the color film according to any one of claims 1 to 8 composited on the surface of the photovoltaic module; the color film is arranged on the outer surface of the photovoltaic module.

12. A method for preparing a full-color optoelectronic functional material, characterized in that: The steps include: Remove the second release paper on one side of the second film layer, and stick and press the side of the second release paper removed toward the color layer of the first film layer, so that the first film layer and the second film layer are combined and then placed for 4-24 hours to obtain a composite film; The full-color optoelectronic functional material according to claim 11 can be obtained by removing the first release paper of the composite film and attaching the side from which the first release paper is removed to the surface of a photovoltaic module.

Images