Light-guiding decorative facing material and preparation method therefor, and photovoltaic curtain wall and component

Abstract

A light-guiding decorative facing material, comprising: a first transparent adhesive layer; a multi-faceted refractive see-through microcrystal layer, fixedly connected to the first transparent adhesive layer, the multi-faceted refractive see-through microcrystal layer being made of a transparent / semi-transparent crystalline material, and the surface of the multi-faceted refractive see-through microcrystal layer being provided with an inkjet-printed pattern layer. The light-guiding decorative facing material is suitable for decorating the surface of a photovoltaic power generation panel, covering the photovoltaic power generation panel so that the color of the photovoltaic power generation panel is not exposed on the outer surface, and thus not affecting the aesthetic appeal of a building, while ensuring that sunlight can pass through and be transmitted to the photovoltaic power generation panel, thereby ensuring that the photovoltaic power generation panel can perform photoelectric conversion normally.

Description

Light-guiding decorative surface material and preparation method thereof, photovoltaic curtain wall, and component Technical Field

[0001] The present invention relates to the technical field of photovoltaic building materials, and in particular to a light-guiding decorative surface material and a preparation method thereof, and a photovoltaic curtain wall and component. Background Art

[0002] Solar photovoltaic power generation technology originated in the 1950s. Its energy comes from the sun, and compared to traditional power generation, it produces virtually no CO2 during the entire power generation process, nor does it pollute or damage the natural ecological environment. As the global energy situation becomes increasingly severe, solar photovoltaic power generation has rapidly developed in recent years as a sustainable energy alternative, and has also been applied to the construction industry.

[0003] Currently, solar photovoltaic panels used in buildings typically use EVA film to bond the cells, which convert solar energy into electricity, to a backsheet. The cells are then encapsulated with glass through the EVA film. Typically, the panels are mounted on the exterior of a building's roof using a support structure. Given that the cells in current solar photovoltaic panels are typically blue or black, they become detached from the building's exterior design, such as its shape and color. This detracts from the building's aesthetics and creates visual pollution, significantly limiting their application in the architectural field.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to overcome the defect in the above-mentioned prior art that solar photovoltaic panels are separated from the design of buildings and are difficult to be widely used in the field of construction, and to provide a light-guiding decorative surface material that is suitable for decoration on the surface of photovoltaic power generation cells, covering the photovoltaic power generation cells so that the color of the photovoltaic power generation cells is not exposed on the outer surface, thereby not affecting the beauty of the building, while ensuring that sunlight can pass through and be transmitted to the photovoltaic power generation cells, ensuring that the photovoltaic power generation cells can perform photoelectric conversion normally.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A light-guiding decorative surface material comprises: a first transparent adhesive layer, a multi-faceted refractive and transparent microcrystal layer fixedly connected to the first transparent adhesive layer, the multi-faceted refractive and transparent microcrystal layer being made of a transparent / semi-transparent crystal material, and an inkjet-printed pattern layer being provided on the surface of the multi-faceted refractive and transparent microcrystal layer.

[0008] Furthermore, the transparent / translucent crystal material adopts rhombohedral crystal material, and the rhombohedral crystal material is Zr-doped BaTiO3, Hf-doped BaTiO3, α-Al2O3, α-CrO3, α-Ca2O3, α-FeAlO3, transition metal-doped α-Al 2-x T x O3 (T = Sc, Y, La, Ac; x = 0.5) or a mixture of two or more thereof; the first transparent adhesive layer is formed by curing a transparent adhesive, and the transparent adhesive is selected from one or more of transparent epoxy resin adhesive, transparent EVA, transparent EAA, transparent acrylic emulsion, silicone acrylic emulsion

[0009] Furthermore, the rhombohedral crystal material is at least partially embedded in the first transparent adhesive layer.

[0010] Furthermore, the thickness of the first transparent adhesive layer is 0.5-3 mm, the thickness of the multi-faceted refractive and transparent microcrystal layer is 0.5-2 mm, the thickness of the inkjet printed pattern layer is 0.01-0.5 mm, and the particle size of the transparent / translucent crystal material is ≤10 μm.

[0011] The present invention also provides a preparation method for the above-mentioned light-guiding decorative surface material, which includes the following steps: taking a transparent adhesive emulsion, applying it on a molding mold to form the first transparent adhesive layer, and then spreading a rhombohedral crystal material on the first transparent adhesive layer to form the multi-rhombus-faceted refractive and transparent microcrystal layer, solidifying and forming it, and finally inkjet printing on the surface of the multi-rhombus-faceted refractive and transparent microcrystal layer to form an inkjet-printed pattern layer; or, mixing the rhombohedral crystal material and the transparent adhesive emulsion into a slurry, and then applying it on a molding mold, and solidifying and forming it.

[0012] Furthermore, the curing temperature is from room temperature to 200° C., and the curing time is from 10 to 120 minutes.

[0013] Furthermore, when the rhombohedral crystal material and the transparent adhesive emulsion are mixed into a slurry, the weight ratio of the rhombohedral crystal material to the transparent adhesive emulsion is 1:(1-5).

[0014] The present invention also provides a photovoltaic curtain wall, including the above-mentioned light-guiding decorative surface material, wherein the photovoltaic curtain wall comprises photovoltaic cells, and the light-guiding decorative surface material is fixed on the surface of the photovoltaic cells.

[0015] Furthermore, the light-guiding decorative surface material is fixed on the surface of the photovoltaic cell through a second transparent adhesive layer.

[0016] Furthermore, a protective layer is provided on the surface of the photovoltaic cell, and the light-guiding decorative surface material is fixed on the surface of the protective layer via a second transparent adhesive layer.

[0017] Furthermore, the photovoltaic curtain wall further includes a substrate, and the photovoltaic cell is fixed on top of the substrate via a fourth transparent adhesive layer.

[0018] Furthermore, the substrate is a glass plate or a modified inorganic powder composite building decorative panel.

[0019] The present invention also provides a component, characterized in that it includes a base and the above-mentioned light-guiding decorative surface material fixed on the surface of the base; the base is provided with an energized display device, and the light-guiding decorative surface material covers the surface of the energized display device.

[0020] Furthermore, the base is provided with a groove, and the powered display device is placed in the groove, and the powered display device is a display screen or a lamp.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The light-guiding decorative surface material of the present invention adopts transparent / translucent crystal system materials to make a multi-faceted refractive and transparent microcrystal layer. The rhombohedral crystal system material is a crystal material with multiple facets, and multiple facets can refract sunlight. Even if a pattern is printed on the surface of the multi-faceted refractive and transparent microcrystal layer, the area under the pattern that is not directly illuminated by sunlight can still be illuminated by the light refracted by the rhombohedral crystal system material, so that a complete large light irradiation area can be formed under the multi-faceted refractive and transparent microcrystal layer, so that the surface material has both decorative and light-guiding functions, and is suitable for use in scenes that require light guidance, such as: photovoltaic panels that need to convert light into electrical energy, and components that need to conduct light.

[0023] The light-guiding decorative surface material of the present invention has both decorative and light-guiding functions, and can be applied to photovoltaic curtain walls and covered on the photovoltaic cells of the photovoltaic curtain wall. It can cover the appearance, shape and color of the photovoltaic cells. The photovoltaic cells cannot be seen from the outside, and only the pattern of the inkjet pattern layer of the light-guiding decorative surface material can be seen. Therefore, the photovoltaic curtain wall can form a style and color coordinated with the building. On the other hand, since the light-guiding decorative surface material has excellent light-guiding ability, it ensures that the solar cells in the photovoltaic curtain wall can absorb enough light for photoelectric conversion.

[0024] The light-guiding decorative surface material of the present invention can also be used in components that need to display photoelectric patterns, such as components provided with an energized display device. The energized display device in the component emits light and displays patterns when the power is turned on. The light-guiding decorative surface material of the present invention is used to cover the surface of the energized display device. The rhombohedral crystal material in the light-guiding decorative surface material can refract the light emitted by the energized display device onto the surface of the inkjet-printed pattern layer, so that when the component is not energized, the outer surface presents the inkjet-printed pattern layer, and when energized, the inkjet-printed pattern layer also displays the pattern formed by the light emitted by the energized display device, forming a unique decorative style. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction is given to the drawings required for describing the embodiments.

[0026] FIG1 is a schematic structural diagram of a light-guiding decorative surface material according to the present invention;

[0027] FIG2 is another structural schematic diagram of a light-guiding decorative surface material of the present invention;

[0028] FIG3 is a schematic structural diagram of a photovoltaic curtain wall using a light-guiding decorative surface material according to the present invention;

[0029] FIG4 is a schematic diagram of the folded structure of a light-guiding decorative surface material according to the present invention.

[0030] In the picture:

[0031] 10. Inkjet-printed pattern layer; 20. Multi-faceted refractive and transparent microcrystalline layer; 30. First transparent adhesive layer; 40. Second transparent adhesive layer; 50. Protective layer; 60. Third transparent adhesive layer; 70. Photovoltaic cell; 80. Fourth transparent adhesive layer; 90. Substrate; 10a. Metal frame; 10b. Metal pendant; 11. Base; 12. Powered display device; 13. Groove. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] 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 such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified and limited, the terms "include" or "have" are intended to specify the existence of features, quantities, steps, operations, elements, parts or combinations thereof, but are not used to exclude the existence or possible addition of one or more other features, quantities, steps, operations, elements, parts or combinations thereof.

[0037] Example 1

[0038] Please refer to FIG. 1 , which shows the structure of a light-guiding decorative surface material according to the present embodiment. The light-guiding decorative surface material includes an inkjet-printed pattern stack 10 , a multi-faceted refractive and translucent microcrystal layer 20 , and a first transparent adhesive layer 30 .

[0039] In this embodiment, the multi-faceted refractive and translucent microcrystalline layer 20 is made of a transparent / translucent crystal material. The transparent / translucent crystal material includes cubic crystal material, hexagonal crystal material, tetragonal crystal material, trigonal crystal material, orthorhombic crystal material, monoclinic crystal material, and triclinic crystal material. For example, the cubic crystal material can be β-SiC, and the hexagonal crystal material can be Be3Al2Si6O 18 , tetragonal materials are selected from tin / rutile / scheelite, and trigonal materials are selected from calcite crystals, etc. In this embodiment, rhombohedral crystal materials are preferably used, and the rhombohedral crystal materials are selected from Zr-doped BaTiO3, Hf-doped BaTiO3, α-Al2O3, α-CrO3, α-Ca2O3, transition metal-doped α-Al 2-x T x O3 (T = Sc, Y, La, Ac; x = 0.5) is a mixture of one or more of them. The particle size of the rhombohedral crystal material is ≤10μm. The first transparent adhesive layer is formed by curing a transparent adhesive, and the transparent adhesive is selected from one or more of transparent epoxy resin adhesive, transparent EVA, transparent EAA, transparent acrylic emulsion, and silicone acrylic emulsion. The multi-faceted refractive and transparent micro-crystal layer 20 is fixed on the surface of the first transparent adhesive layer 30; or, the multi-faceted refractive and transparent micro-crystal layer 20 is embedded in the first transparent adhesive layer 30. When the multi-faceted refractive and transparent micro-crystal layer is fixed on the surface of the first transparent adhesive layer, the rhombohedral crystal material is fixedly adhered to the surface of the first transparent adhesive layer; when the multi-faceted refractive and transparent micro-crystal layer is embedded in the first transparent adhesive layer, the rhombohedral crystal material is partially or completely embedded in the first transparent adhesive layer.

[0040] In this embodiment, the thickness of the first transparent adhesive layer 30 is 0.5-3 mm, the thickness of the multi-faceted refractive and transparent micro-crystal layer 20 is 0.5-2 mm, and the thickness of the inkjet printed pattern layer 10 is 0.01-0.5 mm.

[0041] In this embodiment, the preparation method of the light-guiding decorative surface material is as follows:

[0042] S10, taking a transparent adhesive emulsion and applying it on the forming mold to form the first transparent adhesive layer;

[0043] S20, spreading the rhombohedral crystal material with a particle size of less than 10 μm on the first transparent adhesive layer to form the multi-faceted refractive and transparent micro-crystal layer, and then shaping and curing it;

[0044] S30 , demoulding, and inkjet printing on the surface of the multi-faceted refractive and transparent microcrystal layer to form an inkjet printed pattern layer.

[0045] In the preparation method of this embodiment, the curing time and temperature in step S20 depend on the transparent adhesive emulsion and its thickness. The curing temperature can be from room temperature to 200°C, and the curing time is 10 to 120 minutes. For example, if the transparent adhesive emulsion is an acrylic emulsion and the thickness is 0.5 mm, the curing temperature can be preferably 80 to 120°C, and the curing time can be 40 to 60 minutes; if the transparent adhesive emulsion is a transparent epoxy resin adhesive paste and the thickness is 1.0 mm, the curing temperature can be preferably 160 to 200°C, and the curing time can be 10 to 30 minutes.

[0046] In the preparation method of this embodiment, inkjet printing can be performed using existing inorganic ink and printer.

[0047] In the above preparation method, the light-guiding decorative surface material obtained has a multi-faceted refractive and transparent micro-crystal layer fixed on the surface of the first transparent adhesive layer.

[0048] Please refer to FIG2 , which shows another structural diagram of a light-guiding decorative surface material according to this embodiment, wherein the multi-faceted refractive and transparent micro-crystal layer 20 is embedded in the first transparent adhesive layer 10 . The preparation method is as follows:

[0049] S10, taking a transparent adhesive emulsion and a rhombohedral crystal material, mixing them into a slurry, then applying it on a forming mold, and curing the mold to form a slurry;

[0050] S20, after demoulding, inkjet printing is performed on the surface to form an inkjet printing pattern layer.

[0051] In the above preparation method, when the rhombohedral crystal material and the transparent adhesive emulsion are mixed into a slurry, the weight ratio of the rhombohedral crystal material to the transparent adhesive emulsion is 1:(1-5). In a preferred embodiment, the weight ratio of the rhombohedral crystal material to the transparent adhesive emulsion is 1:3, which not only meets the light-guiding performance of the light-guiding decorative surface material, but also has a good bonding effect and excellent ink absorption performance. The pattern on the upper inkjet-printed pattern layer 10 is clear and firm, and does not bleed.

[0052] Example 2

[0053] Please refer to Figure 3, which shows the structure of a photovoltaic curtain wall using the light-guiding decorative surface material of Example 1. The photovoltaic curtain wall includes a photovoltaic cell 70, and the light-guiding decorative surface material covers the surface of the photovoltaic cell 70. In existing photovoltaic curtain walls, the surface of the photovoltaic cell is covered with a glass layer to meet the working requirements of the photovoltaic cell for lighting and converting solar energy into batteries. Since the appearance, shape and color of the photovoltaic cell itself will be displayed through the glass layer, it will be out of tune with the surrounding buildings in many scenes, limiting the application of the photovoltaic curtain wall. In this embodiment, the surface of the photovoltaic curtain wall is covered with the light-guiding decorative surface material of Example 1, which not only meets the lighting requirements of the photovoltaic cell for converting solar energy into electrical energy, but also because the inkjet-printed pattern layer on the surface of the light-guiding decorative surface material can cover the photovoltaic cell so that the shape and color of the photovoltaic cell cannot be seen from the outside, and only the pattern of the inkjet-printed pattern layer can be seen, so that the photovoltaic curtain wall can be applied to any building without causing architectural visual pollution.

[0054] In this embodiment, the light-guiding decorative surface material is adhered to the surface of the photovoltaic cell 70 via a second transparent adhesive layer 50. Since photovoltaic cells are relatively fragile and thin, to prevent damage to the cells during the adhesion process, a protective layer 50, such as a PET (polyethylene terephthalate) layer, is applied to the photovoltaic cell before the light-guiding decorative surface material is adhered to the photovoltaic cell. This layer effectively prevents damage to the photovoltaic cell during the adhesion process. The PET layer is adhered to the photovoltaic cell via a third transparent adhesive layer 60.

[0055] In this embodiment, the photovoltaic curtain wall further includes a substrate 90, and the photovoltaic cell 70 is fixed to the substrate via a fourth transparent adhesive layer 80. The substrate 90 can be a glass plate or a modified inorganic powder composite building facing board. The modified inorganic powder composite building facing board comprises the following components by weight: 20-80% modified inorganic powder, 3-30% acrylic polymer emulsion and / or latex powder, and the balance water. The modified inorganic powder is at least one of waste building cement block powder, stone factory waste powder, coal slag powder, ceramic factory waste powder, and sand modified with a surfactant coupling agent. The surfactant is a rare earth coupling agent, an aluminate coupling agent, or a titanate coupling agent, and the amount of the surfactant added is 0.3-2% of the total weight of the modified inorganic powder. The polymer coating is a polyvinyl alcohol, polyvinyl pyrrolidone, or epoxy acrylic resin coating.

[0056] In this embodiment, the second transparent adhesive layer 40, the third transparent adhesive layer 60, and the fourth transparent adhesive layer 80 can all be formed by coating and curing the material of the first transparent adhesive layer. That is, they can be a transparent epoxy resin adhesive, transparent EVA, transparent EAA, transparent acrylic emulsion, silicone acrylic emulsion, or a mixture of two or more of them, which are then cured and formed. The fourth transparent adhesive layer 80 can also be cured and formed by using a two-component transparent curing agent. The two-component transparent curing agent includes component A and component B. The weight ratio of component A to component B is (2-1): (1-2). Component A is a polymer of a hydroxyl-containing oligomer polyol and a polyisocyanate. Component B is an adduct of a polyisocyanate containing an isocyanate group and a polyol containing an active hydrogen, or a self-polymer of a polyisocyanate.

[0057] In this embodiment, the photovoltaic curtain wall further comprises a metal frame 10a. The substrate 90, photovoltaic cells 70 and light-guiding decorative surface material are stacked and fixed to form an integrated panel. The panel is embedded in the metal frame 10a around its periphery.

[0058] In this embodiment, the photovoltaic curtain wall further includes a metal hanger 10b, which is fixedly connected to the metal frame 10a or the bottom of the substrate 90. The metal hanger 10a is used to fix the photovoltaic curtain wall.

[0059] In this embodiment, the photovoltaic cell may be a monocrystalline silicon cell, a polycrystalline silicon cell or a solar thin film cell.

[0060] Performance testing:

[0061] (1) Sample preparation:

[0062] Control group: Commercially available polycrystalline silicon photovoltaic panels were purchased, and the surface of the polycrystalline silicon cells was covered with glass sheets;

[0063] Experimental Group 1: The photovoltaic curtain wall of the present invention, wherein the photovoltaic cells are polycrystalline silicon cells, the surface is covered with the light-guiding decorative surface material of the present invention, and the multi-faceted refractive and translucent microcrystalline layer is fixed to the surface of the first transparent adhesive layer, and the transparent crystal system material used in the multi-faceted refractive and translucent microcrystalline layer is a rhombohedral crystal system material;

[0064] Experimental Group 2: The photovoltaic curtain wall of the present invention, wherein the photovoltaic cells are polycrystalline silicon cells, the surface is covered with the light-guiding decorative surface material of the present invention, and the multi-faceted refractive and transparent microcrystalline layer is embedded in the first transparent adhesive layer. The transparent crystal system material used in the multi-faceted refractive and transparent microcrystalline layer is a rhombohedral crystal system material;

[0065] Experimental Group 3: The photovoltaic curtain wall of the present invention, wherein the photovoltaic cells are polycrystalline silicon cells, the surface is covered with the light-guiding decorative surface material of the present invention, and the multi-faceted refractive and translucent microcrystalline layer is fixed to the surface of the first transparent adhesive layer. The transparent crystal system material used in the multi-faceted refractive and translucent microcrystalline layer is tetragonal rutile material;

[0066] Experimental Group 4: The photovoltaic curtain wall of the present invention, wherein the photovoltaic cells are polycrystalline silicon cells, the surface is covered with the light-guiding decorative surface material of the present invention, and the multi-faceted refractive and translucent microcrystalline layer is fixed to the surface of the first transparent adhesive layer. The transparent crystal material used in the multi-faceted refractive and translucent microcrystalline layer is trigonal calcite.

[0067] (2) Photoelectric conversion efficiency: Tested in accordance with GB / T 34160;

[0068] (3) Ink absorption test: The time required for different samples to absorb a certain amount of ink is used to characterize the test. A certain amount of ink is sprayed on the sample, and then the time is started. The surface is lightly touched with a finger. When it feels sticky and no ink sticks to the hand, the coating surface is considered dry. The time is stopped and the obtained time is the ink absorption time of the coated sample. The shorter the ink absorption time, the faster the ink absorption speed. The test results are represented by "*". The more "*", the better the effect.

[0069] (4) Clarity test: The clarity is measured by the ratio of the diameter of the ink droplet after it is sprayed onto the sample to the diameter of the ink droplet before it is diffused. The smaller the ratio, the better the clarity. The test results are represented by "*". The more "*" there are, the clearer the image.

[0070] (5) Artificial aging test: artificial aging test is carried out in accordance with GB / T 16259;

[0071] (4) Test results: see Table 1

[0072] Table 1 Test results of each experimental group and control group

[0073] As can be seen from Table 1 above, the photovoltaic curtain wall using the light-guiding decorative surface material of the present invention has a good photoelectric conversion efficiency. Although the photoelectric conversion efficiency is slightly lower than that of the existing photovoltaic curtain wall covered with glass, it does not affect the photoelectric conversion performance of the photovoltaic cell. However, the photovoltaic curtain wall of this embodiment can solve the problem of the appearance shape and color of the photovoltaic cell in the existing photovoltaic curtain wall because the light-guiding decorative surface material in various aspects can be inkjet printed. It can enable the photovoltaic curtain wall to be designed according to the shape, style and pattern of the building to be decorated and present a coordinated appearance pattern and color, which effectively overcomes the problem of architectural visual pollution caused by the application of the photovoltaic curtain wall, so that the photovoltaic curtain wall can be widely promoted and applied.

[0074] Example 3

[0075] Please refer to Figure 4, which shows a schematic diagram of the structure of a component incorporating the light-guiding decorative surface material of Example 1. The component comprises a base 11 and the light-guiding decorative surface material of Example 1 fixed to the surface of the base. The base is provided with a powered display device 12, and the light-guiding decorative surface material covers the surface of the powered display device. The base is provided with a recess 13, and the powered display device is positioned within the recess. The powered display device is, for example, a display screen or a light. After the light-guiding decorative surface material covers the surface of the powered display device, when the component is not powered, the powered display device is in an unpowered state, and the surface of the component displays the pattern of the inkjet-printed pattern layer of the light-guiding decorative surface material. The powered display device within the component is concealed, and its shape cannot be seen from the exterior surface of the component. When the component is powered, the powered display device is in an energized state, and the photoelectric pattern emitted by the powered display device is refracted by the multi-faceted refractive and transparent microcrystal layer and then appears on the surface of the inkjet-printed pattern layer. The photoelectric pattern is then reflected through the inkjet-printed pattern layer to the powered display device, creating a unique artistic effect.

[0076] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 invention. 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.

[0077] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A light guide decorative surface material, characterized in that, Comprising: A first transparent adhesive layer, a multi-faceted refractive and perspective microcrystal layer fixedly connected to the first transparent adhesive layer, the multi-faceted refractive and perspective microcrystal layer being made of a transparent / translucent crystal system material, and an inkjet printing pattern layer being provided on the surface of the multi-faceted refractive and perspective microcrystal layer.

2. The light guide decorative surface material according to claim 1, characterized in that: The transparent / translucent crystalline material uses a rhombohedral crystal material, and the rhombohedral crystal material is one or more of Zr-doped BaTiO3, Hf-doped BaTiO3, α-Al2O3, α-CrO3, α-Ca2O3, α-FeAlO3, and transition metal-doped α-Al 2-x T x O3 (T = Sc, Y, La, Ac; x = 0.5); the first transparent adhesive layer is formed by curing a transparent adhesive, and the transparent adhesive is selected from one or more of a transparent epoxy resin adhesive, transparent EVA, transparent EAA, transparent acrylic emulsion, and silicone-acrylic emulsion.

3. The light guide decorative surface material according to claim 1, characterized in that: At least part of the rhombohedral crystal system material is embedded in the first transparent adhesive layer.

4. The light guide decorative surface material according to claim 1, wherein: The thickness of the first transparent adhesive layer is 0.5 - 3 mm, the thickness of the multi-faceted refractive and perspective microcrystal layer is 0.5 - 2 mm, the thickness of the inkjet printing pattern layer is 0.01 - 0.5 mm, and the particle size of the transparent / translucent crystal system material ≤ 10 μm.

5. The preparation method of the light guide decorative surface material according to any one of claims 1 to 4, characterized in that, Comprising the following steps: Taking a transparent adhesive emulsion, coating it on a forming mold to form the first transparent adhesive layer, then laying the rhombohedral crystal system material on the first transparent adhesive layer to form the multi-faceted refractive and perspective microcrystal layer, curing and forming, and finally inkjet printing on the surface of the multi-faceted refractive and perspective microcrystal layer to form an inkjet printing pattern layer; or, mixing the rhombohedral crystal system material with the transparent adhesive emulsion into a slurry, then coating it on a forming mold and curing and forming.

6. The preparation method of the light guide decorative surface material according to claim 5, characterized in that: The temperature for curing and forming is from room temperature to 200 °C, and the curing time is 10 - 120 min.

7. The preparation method of the light guide decorative surface material according to claim 5, characterized in that: When the rhombohedral crystal system material is mixed with the transparent adhesive emulsion into a slurry, the weight ratio of the rhombohedral crystal system material to the transparent adhesive emulsion is 1:(1 - 5).

8. A photovoltaic curtain wall, characterized in that: Comprising the light guide decorative surface material according to any one of claims 1 to 4, the photovoltaic curtain wall comprising photovoltaic cells, and the light guide decorative surface material being fixed on the surface of the photovoltaic cells.

9. The photovoltaic curtain wall according to claim 8, characterized in that: The light guide decorative surface material is fixed on the surface of the photovoltaic cells through a second transparent adhesive layer.

10. The photovoltaic curtain wall according to claim 9, wherein: A protective layer is provided on the surface of the photovoltaic cells, and the light guide decorative surface material is fixed on the surface of the protective layer through a second transparent adhesive layer.

11. The photovoltaic curtain wall according to claim 8, characterized in that: The photovoltaic curtain wall further comprises a substrate, and the photovoltaic cells are fixed above the substrate through a fourth transparent adhesive layer.

12. The photovoltaic curtain wall according to claim 11, wherein: The substrate is a glass plate or a modified inorganic powder composite building decorative panel.

13. A component, characterized in that: Comprising a base body, and the light guide decorative surface material according to any one of claims 1 to 4 fixed on the surface of the base body; an electrified display device is provided on the base body, and the light guide decorative surface material covers the surface of the electrified display device.

14. The component according to claim 13, characterized in that: A groove is provided on the base body, the electrified display device is placed in the groove, and the electrified display device is a display screen or a lamp.

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