High-water-resistance photovoltaic module non-glass front plate

Abstract

The utility model discloses a non-glass front plate of a high-water-resistance photovoltaic module. The non-glass front plate comprises a transparent fluorine film, a cut-off type transparent flame-retardant adhesive film and a transparent water-resistance composite plate, the transparent water-blocking composite board comprises a transparent transition layer, a transparent PET film, a water-blocking film and a transparent priming coat which are compounded in sequence; the cut-off type transparent flame-retardant adhesive film contains an ultraviolet light absorber; a transparent transition layer in the transparent water-blocking composite board is compounded with the cut-off type transparent flame-retardant adhesive film; the transparent bottom coating is provided with protruding points protruding out of the surface of the coating. The non-glass front plate of the high-water-resistance photovoltaic module has the properties of high weather resistance, high light transmission, light weight, water resistance and flame retardance, is suitable for distributed power generation scenes, and can effectively overcome the defects that a glass back plate is heavy in weight, not easy to install and high in requirements on infrastructures.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic module technical field, concretely relates to a high water -resistant photovoltaic module non -glass front board. BACKGROUND

[0002] With the global demand for renewable energy rising, photovoltaic power generation as a clean, sustainable energy form, has been widely concerned. Common photovoltaic module from the front to the back structure in turn is the front cover (front board), front encapsulation adhesive film, cell layer, back encapsulation adhesive film and back plate. The traditional photovoltaic module usually uses glass as front board material, although glass has good light transmittance and weather resistance, but in practical application also has some significant shortcomings. For example, the weight of glass is larger, increases the difficulty of transportation and installation, and heavy component has higher requirements for the carrying capacity of support and infrastructure;In addition, glass is easy to break under extreme weather conditions, which may cause damage to photovoltaic module, thereby affecting its power generation efficiency and service life. In addition, the glass surface is easy to accumulate dust and dirt, which reduces the photoelectric conversion efficiency of photovoltaic module and increases the maintenance cost.

[0003] In order to overcome the above problems, researchers begin to explore alternative materials to improve the performance and reliability of photovoltaic module. Among them, the development of non-glass front plate material becomes an important direction. These materials not only can reduce the weight of photovoltaic module, but also can improve its impact resistance and weather resistance, thereby prolonging the service life of the component. With the continuous iteration of battery technology, the application of Perc battery is reduced year by year, and Topcon battery becomes the market mainstream. However, Topcon battery is sensitive to water vapor, and requires encapsulation material to have excellent water vapor barrier rate. Although glass can meet the requirements of water vapor barrier, it is heavy, inconvenient to install, and requires high infrastructure, so it is not suitable for lightweight components. Therefore, it is urgent to develop a lightweight high water-resistant photovoltaic module non-glass front plate. The high water-resistant photovoltaic module non-glass front plate is suitable for distributed photovoltaic power generation scene, which can effectively reduce the weight of the component. In addition, photovoltaic modules are usually installed on the upper part or facade of buildings, and once a fire occurs, it will have disastrous consequences. Therefore, the flame retardant performance of the component is also required.

[0004] The development of non-glass front plate photovoltaic module conforms to the current environmental protection and sustainable development trend. With the enhancement of people's environmental protection consciousness, lightweight, durable and recyclable materials are more and more favored. The use of non-glass front plate material not only can reduce the overall weight of photovoltaic module, reduce resource consumption, but also can realize higher recycling rate after the end of life cycle. UTILITY MODEL CONTENTS

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a non-glass front panel for a high water-blocking photovoltaic module, which has high weather resistance, high light transmittance, lightweight, water-blocking, and flame-retardant properties, making it suitable for distributed power generation scenarios. It can effectively improve the shortcomings of glass back panels, such as large weight, difficulty in installation, and high requirements for infrastructure.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A non-glass front panel for a high water-blocking photovoltaic module includes a transparent fluorine film, a cut-off transparent flame-retardant adhesive film, and a transparent water-blocking composite panel. The transparent water-blocking composite panel comprises a transparent transition layer, a transparent PET film, a water-blocking film, and a transparent base layer sequentially laminated together. The cut-off transparent flame-retardant adhesive film contains an ultraviolet absorber. The transparent transition layer in the transparent water-blocking composite panel is laminated with the cut-off transparent flame-retardant adhesive film. The transparent base layer has raised dots protruding from the coating surface.

[0008] Furthermore, the water-blocking film comprises two PET films and an intermediate adhesive layer located between the two PET films, wherein the inner layer of the PET film is provided with a silicon oxide layer or an aluminum oxide layer; the transparent PET film and the water-blocking film are bonded together by an adhesive.

[0009] Furthermore, the bumps in the transparent base coating are formed using large-particle transparent powder.

[0010] Furthermore, the transparent fluorine film is an ETFE fluorine film or a PVDF fluorine film, and the transparent transition layer is a PVDF fluorine film or a coating made of paint.

[0011] Furthermore, the cut-off transparent flame-retardant film is a cut-off POE flame-retardant film or a cut-off EVA flame-retardant film.

[0012] Furthermore, the cut-off transparent flame-retardant film can block ultraviolet light in the 280-380nm wavelength band.

[0013] Furthermore, the visible light transmittance of this non-glass front panel is over 86%.

[0014] The beneficial effects of this utility model are:

[0015] The front panel of this utility model adopts a composite structure of transparent fluorine film, cut-off transparent flame-retardant film and transparent water-blocking composite board. The transparent water-blocking composite board includes a transparent transition layer, a transparent PET film, a water-blocking film and a transparent base layer that are sequentially laminated. This combination structure can ensure high weather resistance, high light transmittance and excellent water-blocking and flame-retardant functions.

[0016] The utility model discloses a transparent water -resisting composite board on through cut -off type transparent flame -retardant adhesive film composite transparent fluorine film, and the transparent fluorine film of the outermost layer has excellent ultraviolet aging resistance, low yellowing value, high light transmittance, and the transparent fluorine film and transparent transition layer cooperation can improve the mechanical properties and wear resistance of whole front plate etc.

[0017] In the transparent water -resisting composite board of the utility model, the transparent transition layer adopts PVDF fluorine film or transparent coating, improves the light transmittance of composite board, and simultaneously, the PVDF material has excellent weather resistance, can greatly reduce the yellowing of composite board, the PET film in the transparent water -resisting composite board plays mechanical support effect and insulates water vapor and oxygen effect, the specific water -resisting film is equipped in the transparent water -resisting composite board, not only gives the front plate excellent water -resisting performance, and will not affect the light transmittance, and the transparent bottom coating is arranged in the innermost layer of the transparent water -resisting composite board, improves the adhesion of the front plate under the premise of guaranteeing high light transmittance, to with the battery piece layer carries out good adhesion.

[0018] The transparent bottom coating in the utility model has the convex point that protrudes from the surface of the coating, can form convex point support, thereby greatly improving the risk of transparent bottom coating return adhesion.

[0019] The non - glass front plate of the utility model has the advantage of light weight, adopts high polymer material, effectively reduces the weight of assembly, is applicable to distributed power generation scene, can effectively improve the shortcomings of heavy weight of glass backboard, not easy to install, high requirement to infrastructure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the high water -resisting photovoltaic module non - glass front plate of the utility model.

[0021] In the drawing, 1: transparent fluorine film, 2: cut -off type transparent flame -retardant adhesive film, 3: transparent transition layer, 4: first adhesive layer, 5: transparent PET film, 6: second adhesive layer, 7: water -resisting film, 8: transparent bottom coating. DETAILED DESCRIPTION

[0022] The technical scheme in the utility model will be described below in conjunction with specific embodiments, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0023] The utility model provides a kind of high water-resisting photovoltaic module non-glass front plate, including transparent fluorine film, cutoff type transparent flame-retardant adhesive film and transparent water-resisting composite board;The transparent water-resisting composite board includes transparent transition layer, transparent PET film, second adhesive layer, water-resisting film and transparent bottom coating layer that are sequentially compounded;The cutoff type transparent flame-retardant adhesive film contains ultraviolet absorber;The transparent transition layer in the transparent water-resisting composite board is compounded with the cutoff type transparent flame-retardant adhesive film;The transparent bottom coating layer has the bump projecting on coating surface.The bump in the transparent bottom coating layer is formed using large-particle-size transparent powder.The light transmittance of the non-glass front plate is more than 86%.

[0024] The transparent fluorine film is ETFE fluorine film or PVDF fluorine film, and the transparent transition layer 3 is PVDF fluorine film or a coating layer made of paint.When the transparent transition layer is a coating layer, the formula of the paint can be the same as that of the transparent bottom coating layer.When the transparent transition layer is PVDF fluorine film, the transparent transition layer and the transparent PET film are compounded by an adhesive.

[0025] The water-resisting film includes two layers of PET film and an intermediate adhesive layer between the two layers of PET film, and the inner layer of the PET film is provided with a silicon oxide layer or an aluminum oxide layer.The silicon oxide layer or the aluminum oxide layer is made by depositing silicon dioxide or aluminum oxide onto the PET film by evaporation or sputtering.The silicon oxide layer or the aluminum oxide layer formed by evaporation or sputtering can play a better role in blocking water vapor and ensure a high light transmittance.The transparent PET film and the water-resisting film are compounded by an adhesive.

[0026] The cutoff type transparent flame-retardant adhesive film is a cutoff type POE flame-retardant adhesive film or a cutoff type EVA flame-retardant adhesive film.The cutoff type transparent flame-retardant adhesive film can cut off ultraviolet rays in the wavelength range of 280-380 nm.In particular, the cutoff type transparent flame-retardant adhesive film is made of cutoff type POE adhesive film particles, a benzophenone ultraviolet absorber and a flame retardant, or cutoff type EVA adhesive film particles, a benzophenone ultraviolet absorber and a flame retardant.The flame retardant is selected from at least one of phosphate flame retardants, organic phosphorus-nitrogen flame retardants, phosphazene flame retardants and organic phosphorus flame retardants, and more specifically, a low-melting transparent flame retardant is used.When the adhesive film is processed, the flame retardant melts to become transparent at the melting point of the flame retardant, and the cutoff type transparent flame-retardant adhesive film is obtained.The preparation raw materials of the cutoff type transparent flame-retardant adhesive film include 100 parts of POE adhesive film particles or EVA adhesive film particles, 5-30 parts of a flame retardant and 2-5 parts of a benzophenone ultraviolet absorber.The specific preparation method is as follows: the adhesive film particles, the ultraviolet absorber and the flame retardant are granulated, and then extruded and drawn into a film at a certain temperature to obtain the cutoff type transparent flame-retardant adhesive film.The specific method of extruding and drawing a film is a prior art, which is not described herein.

[0027] The preparation process of the transparent waterproof composite board is as follows: a transparent transition layer is compounded on one side of the transparent PET film, a waterproof film is compounded on the other side of the transparent PET film through an adhesive, a transparent coating is coated on the waterproof film, and the transparent waterproof composite board is obtained after baking at 90-170 DEG C for 2-5 min. The transparent PET film can be a flame-retardant PET film.

[0028] The raw materials for preparing the transparent coating forming the transparent primer layer include the following components in parts by weight: 40-70 parts of film-forming resin, 2-8 parts of functional resin, 0.3-1.0 parts of leveling agent, 1-3.5 parts of UV auxiliary agent, 1-10 parts of functional filler, 1-8 parts of matt filler, 0.5-4 parts of antioxidant, 0.03-0.3 parts of catalyst, 0.5-1.5 parts of adhesion promoter, 20-40 parts of solvent, and 0-30 parts of curing agent.

[0029] The film-forming resin is at least one of fluorocarbon resin, hydroxyl acrylic resin, silicone-modified acrylic resin, polyurethane resin, and polyester resin.

[0030] The functional resin is at least one of polyester resin, bisphenol A epoxy-modified polyester resin, hydrogenated epoxy-modified polyester resin, o-cresol formaldehyde epoxy resin, and hydrogenated epoxy resin.

[0031] The leveling agent is one or a mixture of two or more of silicone-modified acrylate compound, polyether-modified polydimethylsiloxane, and polyester-modified polydimethylsiloxane.

[0032] The UV auxiliary agent is one or a mixture of two or more of benzotriazole, salicylic acid, triazine, and hindered amine light stabilizer.

[0033] The catalyst is one or a mixture of two or more of dibutyltin dilaurate, metal carboxylate catalyst, bismuth neodecanoate catalyst, bismuth isooctoate catalyst, and amine-encapsulated DBTDL catalyst.

[0034] The adhesion promoter is one or a mixture of two or more of gamma-glycidoxypropyltrimethoxysilane, 3-isocyanatepropyltrimethoxysilane, gamma-methacryloyloxypropyltrimethoxysilane, and vinyltris(beta-methoxyethoxy)silane.

[0035] The functional filler is compounded by transparent powder without crystal water, monodisperse silicone microspheres and monodisperse PMMA microspheres; the refractive index of the monodisperse PMMA microspheres is similar to the refractive index of the film-forming resin; the transparent powder is transparent glass powder; the particle size of the transparent powder is 20-30 microns, the particle size of the monodisperse silicone microspheres is 3-12 microns, and the particle size of the monodisperse PMMA microspheres is 3-12 microns; the compounding ratio of the transparent powder, the monodisperse silicone microspheres and the monodisperse PMMA microspheres is 1:1:1.5; the microspheres can effectively fill the packing gap of the transparent powder, and the microspheres have regular spherical structure, so that the opening agent effect can be achieved, and the problem of coating tack-back can be improved;

[0036] The matting filler is gel method silica matting powder or untreated fumed silica matting powder;

[0037] The antioxidant is at least one of tris [2.4-di-tert-butylphenyl] phosphite, tetra [beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, triethylene glycol ether-di (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate;

[0038] The solvent is at least one of toluene, xylene, butyl acetate, propylene glycol methyl ether acetate, cyclohexanone and DBE;

[0039] The curing agent is at least one of open type HDI, closed type HDI and IPDI curing agent.

[0040] The preparation method of the transparent coating is as follows: 40-70 parts of film-forming resin, 2-8 parts of functional resin, 20-25 parts of solvent are put into a cylinder, and stirred at a medium speed for 10 minutes; 1-10 parts of functional filler, 1-8 parts of matting filler, 3-5 parts of solvent are put into the cylinder and dispersed at a high speed for 45 minutes; 0.3-1.0 parts of leveling agent, 1-3.5 parts of UV aid, 0.5-4 parts of antioxidant, 0.1-0.3 parts of catalyst and 0.5-1.5 parts of adhesion promoter are put into the cylinder and dispersed at a medium speed for 15 minutes, so that the main agent with uniform dispersion and qualified fineness is obtained; 0-30 parts of curing agent and 5-10 parts of solvent are added into the prepared transparent coating and stirred for 15 minutes, so that the transparent coating is obtained.

[0041] The preparation method of the high-water-resistance photovoltaic module non-glass front plate comprises the following steps:

[0042] 1) the water-resistance film is compounded with the transparent PET film by using an adhesive; after maturation, the transparent coating is coated on the outer side of the water-resistance film, and dried and solidified in an oven at 90-170 DEG C; after solidification, the transparent transition layer is compounded on the other side of the transparent PET film, so that the transparent water-resistance composite plate is obtained;

[0043] 2) The transparent transition layer of the obtained transparent water-blocking composite board is laminated with a transparent fluorine film using a stop-type transparent flame-retardant adhesive film (lamination temperature 110-145℃) to obtain the non-glass front panel of the high water-blocking photovoltaic module.

[0044] Example 1

[0045] like Figure 1 As shown, the non-glass front panel of the high water-blocking photovoltaic module in Embodiment 1 includes a transparent fluorine film 1, a cut-off transparent flame-retardant adhesive film 2, and a transparent water-blocking composite board. The transparent water-blocking composite board includes a transparent transition layer 3, a first adhesive layer 4, a transparent PET film 5, a second adhesive layer 6, a water-blocking film 7, and a transparent base layer 8, which are sequentially laminated. The cut-off transparent flame-retardant adhesive film 2 contains an ultraviolet absorber. The transparent transition layer 3 in the transparent water-blocking composite board is laminated with the cut-off transparent flame-retardant adhesive film 2. The transparent base layer 8 has raised dots protruding from the coating surface. The raised dots in the transparent base layer 8 are formed using large-particle-size transparent powder.

[0046] The transparent fluorine film is an ETFE fluorine film with a thickness of 20 μm, and the transparent transition layer is a PVDF fluorine film.

[0047] The water-blocking membrane comprises two PET films and an intermediate adhesive layer between the two PET films, wherein the inner layer of the PET films has a silicon oxide layer. This silicon oxide layer is formed by depositing silicon dioxide onto the PET films using a vapor deposition process.

[0048] The cut-off transparent flame-retardant film is a cut-off POE flame-retardant film. This cut-off transparent flame-retardant film is made using 100 parts of cut-off POE film particles, 2 parts of benzophenone-based ultraviolet absorber, and 15 parts of organic nitrogen-phosphorus flame retardant (WP-6201F). The specific preparation method is as follows: the film particles, ultraviolet absorber, and flame retardant are mixed evenly, granulated, and then extruded at a certain temperature to obtain the cut-off transparent flame-retardant film.

[0049] The preparation method of the non-glass front panel of the high water-blocking photovoltaic module is as follows: an adhesive is coated on one side of a transparent PET film and a transparent transition layer is laminated thereon. A water-blocking film is laminated on the other side of the transparent PET film with an adhesive. A transparent coating is then coated on the water-blocking film. After baking at 170°C for 5 minutes, a transparent water-blocking composite board is obtained. The transparent transition layer side of the obtained transparent water-blocking composite board and a transparent fluorine film are laminated with a stop-type transparent flame-retardant adhesive film (lamination temperature 135°C) to obtain the non-glass front panel of the high water-blocking photovoltaic module.

[0050] The preparation method of the transparent coating forming the transparent primer layer is as follows: 50 parts of fluorocarbon resin, 3 parts of polyester resin, and 30 parts of solvent are put into a cylinder and stirred at a medium speed for 10 min, 5 parts of functional filler, 2 parts of fumed silica matting powder, and 5 parts of solvent are put into the cylinder and dispersed at a high speed for 45 min, then 0.3 parts of leveling agent, 2 parts of benzotriazole UV aid, 2 parts of antioxidant, 0.1 parts of dibutyl tin dilaurate, and 1 part of gamma-glycidoxypropyltrimethoxysilane are put into the cylinder and dispersed at a medium speed for 15 min to obtain a main agent with uniform dispersion and qualified fineness, 15 parts of IPDI curing agent and 5 parts of solvent are added into the prepared transparent coating and stirred for 15 min until uniform dispersion, and then the transparent coating is obtained.

[0051] Example 2

[0052] The high-water-resistance photovoltaic module non-glass front plate of this example 2 comprises a transparent fluorine film 1, a cutoff type transparent flame-retardant adhesive film 2, and a transparent water-resistance composite plate; the transparent water-resistance composite plate comprises a transparent transition layer 3, a first adhesive layer 4, a transparent PET film 5, a second adhesive layer 6, a water-resistance film 7, and a transparent primer layer 8 which are sequentially compounded; the cutoff type transparent flame-retardant adhesive film 2 contains an ultraviolet absorber; the transparent transition layer 3 in the transparent water-resistance composite plate is compounded with the cutoff type transparent flame-retardant adhesive film 2; the transparent primer layer 8 has protrusions protruding from the surface of the coating layer. The protrusions in the transparent primer layer 8 are formed by using large-particle-size transparent powder.

[0053] The transparent fluorine film is an ETFE fluorine film with a thickness of 25 μm, and the transparent transition layer is a PVDF fluorine film.

[0054] The water-resistance film comprises two layers of PET films and an intermediate adhesive layer between the two layers of PET films, and the inner layer of the PET film is provided with a silicon oxide layer. The silicon oxide layer is made by depositing silicon dioxide onto the PET film by evaporation.

[0055] The cutoff type transparent flame-retardant adhesive film is a cutoff type POE flame-retardant adhesive film. The cutoff type transparent flame-retardant adhesive film is made by mixing 100 parts of cutoff type POE adhesive film particles, 2 parts of benzophenone ultraviolet absorber, and 15 parts of organic nitrogen phosphorus flame retardant (BP-6A) and then granulating and extruding and film drawing at a certain temperature to obtain the cutoff type transparent flame-retardant adhesive film.

[0056] The preparation method of the high water-resistance photovoltaic module non-glass front plate is as follows: coating adhesive on one side of the transparent PET film and compounding the transparent transition layer, compounding the water-resistance film on the other side of the transparent PET film through the adhesive, coating the transparent coating on the water-resistance film, and baking at 170℃ for 5min to obtain the transparent water-resistance composite plate; laminating (laminating temperature 145℃) the transparent transition layer of the obtained transparent water-resistance composite plate and the transparent fluorine film with the cut-off type transparent flame-retardant adhesive film to obtain the high water-resistance photovoltaic module non-glass front plate.

[0057] The preparation method of the transparent coating for forming the transparent primer layer is as follows: 55 parts of fluorocarbon resin, 2.5 parts of polyester resin and 30 parts of solvent are put into a cylinder and stirred at a medium speed for 10min, 4.8 parts of functional filler, 2.2 parts of fumed silica matting powder and 5 parts of solvent are put into the cylinder and dispersed at a high speed for 45min, then 0.3 parts of leveling agent, 2 parts of benzotriazole UV aid, 2 parts of antioxidant, 0.1 parts of dibutyl tin dilaurate and 1 part of γ-glycidoxypropyltrimethoxysilane are put into the cylinder and dispersed at a medium speed for 15min to obtain the main agent with uniform dispersion and qualified fineness, 15 parts of IPDI curing agent and 5 parts of solvent are added into the prepared transparent coating and stirred for 15min to obtain the transparent coating with uniform dispersion.

[0058] Example 3

[0059] The high water-resistance photovoltaic module non-glass front plate of the example 3 comprises a transparent fluorine film 1, a cut-off type transparent flame-retardant adhesive film 2 and a transparent water-resistance composite plate; the transparent water-resistance composite plate comprises a transparent transition layer 3, a first adhesive layer 4, a transparent PET film 5, a second adhesive layer 6, a water-resistance film 7 and a transparent primer layer 8 which are compounded in sequence; the cut-off type transparent flame-retardant adhesive film contains ultraviolet absorber; the transparent transition layer 3 in the transparent water-resistance composite plate is compounded with the cut-off type transparent flame-retardant adhesive film 2; the transparent primer layer 8 has protrusions protruding from the surface of the coating layer. The protrusions in the transparent primer layer are formed by using large-particle-size transparent powder.

[0060] The transparent fluorine film is a PVDF fluorine film with a thickness of 22μm, and the transparent transition layer is a PVDF fluorine film.

[0061] The water-resistance film comprises two layers of PET films and an intermediate adhesive layer between the two layers of PET films, and the inner layer of the PET film is provided with a silicon oxide layer. The silicon oxide layer is made by depositing silicon dioxide onto the PET film by evaporation.

[0062] The cutoff type transparent flame-retardant adhesive film is a cutoff type POE flame-retardant adhesive film. The cutoff type transparent flame-retardant adhesive film is prepared by mixing 100 parts of cutoff type POE adhesive film particles, 3 parts of a benzophenone ultraviolet absorber, and 12 parts of an organic nitrogen phosphorus flame retardant (BP-6A), and then extruding and film drawing at a certain temperature.

[0063] The preparation method of the high-water-resistance photovoltaic component non-glass front plate is as follows: coating an adhesive on one side of a transparent PET film and compounding a transparent transition layer, compounding a water-blocking film on the other side of the transparent PET film through the adhesive, coating a transparent coating on the water-blocking film, and baking at 170 DEG C for 5 minutes to obtain a transparent water-blocking composite plate; laminating the transparent transition layer of the obtained transparent water-blocking composite plate and a transparent fluorine film with a cutoff type transparent flame-retardant adhesive film (laminating temperature 145 DEG C) to obtain the high-water-resistance photovoltaic component non-glass front plate.

[0064] The preparation method of the transparent coating for forming the transparent primer layer is as follows: 60 parts of fluorocarbon resin, 2 parts of polyester resin, and 30 parts of solvent are put into a cylinder and stirred at a medium speed for 10 minutes, 4.5 parts of functional filler, 2 parts of fumed silica matting powder, and 5 parts of solvent are put into the cylinder and dispersed at a high speed for 45 minutes, 0.3 parts of leveling agent, 2 parts of benzotriazole UV aid, 2 parts of antioxidant, 0.1 parts of dibutyltin dilaurate, and 1 parts of gamma-glycidoxypropyltrimethoxysilane are put into the cylinder and dispersed at a medium speed for 15 minutes to obtain a main agent with uniform dispersion and qualified fineness, 15 parts of IPDI and 5 parts of solvent are added to the prepared transparent coating and stirred for 15 minutes to obtain the transparent coating.

[0065] The high-water-resistance photovoltaic component non-glass front plates of Examples 1-3 are tested for performance, and the test items include grid drawing force, light transmittance, yellowing resistance, water permeability, and flame retardant performance, and the test results are shown in Table 1.

[0066] The grid drawing force is referred to the standard of GB / T 9286-2021 "Grid Test for Color Paint and Varnish";

[0067] The light transmittance is referred to the standard of ASTM E424-71 "Test Method for Solar Energy Transmission and Reflection of Panel Materials";

[0068] The yellowing resistance is referred to the standard of GB / T 3979-2008 "Measurement Method for Object Color";

[0069] The water permeability is referred to the standard of GB / T 21529-2008 "Determination of Water Vapor Transmission Rate of Plastic Film and Sheet - Electrolytic Sensor Method";

[0070] Flame resistance reference standard: ISO 11925-2 "Single flame source ignitability test".

[0071] Table 1

[0072]

[0073] From Table 1, it can be seen that the non-glass front plate of the present application has excellent weather resistance, light transmittance, water resistance and flame resistance.

[0074] It is apparent that the present application is not limited to the details of the foregoing exemplary embodiments, and thus modifications and variations are possible in light of the above teachings or can be acquired from practice of the application. It is also clear that with respect to the application, equivalents can be substituted for certain specified procedural steps or equivalent and / or similar elements can be utilized. Also, many of the exemplary embodiments described herein are described in terms of sequences of actions to be performed by, for example, elements of a computing device. Understand that these embodiments can be described or chronicled sequentially or in parallel, accordingly. In some instances, certain of the exemplary embodiments can be described and chronicled in a reentrant style, wherein a certain aspect of the sequences is repeated. Accordingly, it is intended that the application not be limited by the described order of the actions, but rather, the actions will be performed in any feasible order unless otherwise expressly stated in the specification. Also, some of the exemplary embodiments will be described about as including functional operations, which can produce a result. It will be apparent that operations can also be implemented by, e.g., components specially configured to perform the operations. And so, some exemplary embodiments can also broadly represent components or items which can produce a result.

[0075] In addition, it should be understood that although the present specification describes exemplary embodiments, not every embodiment according to the present specification contains all features that are described in connection with other embodiments. It is also clear that not every feature of the specification can be claimed in every embodiment. It will be apparent that some embodiments contain only some of the features according to the specification, while other embodiments contain many of the features, and still other embodiments contain all of the features according to the specification. Therefore, there are many alternative combinations.

Claims

1. A high water-resistive photovoltaic assembly non-glass front sheet, characterized in that, The transparent fluorine film, the cut-off type transparent flame-retardant adhesive film and the transparent water-blocking composite board; the transparent water-blocking composite board comprises a transparent transition layer, a transparent PET film, a water-blocking film and a transparent bottom coating layer which are sequentially compounded; the cut-off type transparent flame-retardant adhesive film is an adhesive film containing an ultraviolet absorber; the transparent transition layer in the transparent water-blocking composite board is compounded with the cut-off type transparent flame-retardant adhesive film; and the transparent bottom coating layer has convex points protruding from the surface of the coating layer.

2. A high-water-resistive photovoltaic module non-glass front sheet according to claim 1, wherein, The water-blocking film comprises two PET films and an intermediate adhesive layer between the two PET films, and the inner layer of the PET film is provided with a silicon oxide layer or an aluminum oxide layer; and the transparent PET film and the water-blocking film are compounded by an adhesive.

3. A high-water-resistive photovoltaic module non-glass front sheet according to claim 1, wherein, The transparent fluorine film is an ETFE fluorine film or a PVDF fluorine film, and the transparent transition layer is a PVDF fluorine film or a coating layer made of paint.

4. A high-water-resistive photovoltaic module non-glass front sheet according to claim 1, wherein, The cut-off type transparent flame-retardant adhesive film is a cut-off type POE flame-retardant adhesive film or a cut-off type EVA flame-retardant adhesive film.

5. A high-water-resistive photovoltaic module non-glass front sheet according to claim 1, wherein, The cut-off type transparent flame-retardant adhesive film can cut off ultraviolet rays in the 280-380 nm wave band.

6. A high-water-resistive photovoltaic module non-glass front sheet according to claim 1, wherein, The light transmittance of the non-glass front plate is more than 86%.

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