Photocuring glue solution based on photoluminescence bird-recognizable fluorescence, preparation method of photocuring glue solution, glass curtain wall and manufacturing method of glass curtain wall

Abstract

The invention provides a photocuring glue solution based on photoluminescence bird-recognizable fluorescence, a preparation method of the photocuring glue solution, a glass curtain wall and a manufacturing method of the glass curtain wall. According to the photoluminescence-based bird-recognizable photocuring glue solution, the photocuring glue solution comprises the following components in parts by mass: 30-80 parts of epoxy resin; 20 to 30 parts of a diluent; 1-2 parts of a fluorescent material; 0.1 to 3 parts of a photoinitiator; 1 to 3 parts of an antioxidant; 0.5 to 2 parts of an adhesion promoter; 0.05 to 0.2 part of a flatting agent; the light-cured glue solution is cured on the base material film to obtain a bird-visible pattern layer, and the formed glass clamping film with the bird-visible pattern layer is used for being clamped in glass; the emission wavelength of the bird visible pattern layer is 300 nm to 600 nm; the light transmittance of the glass clamping film is larger than or equal to 90%, so that the bird-seeing pattern layer has good user visual light transmittance, and the problems that the pattern falls off or shrinks and the combination performance of the pattern and the glass substrate is poor are solved.

Description

Technical Field

[0001] This disclosure relates to the technical field of glass adhesives, and in particular to a photocurable adhesive based on photoluminescence that can be recognized by birds, its preparation method, and a glass curtain wall and its manufacturing method. Background Technology

[0002] With the continuous development of society and building materials, high-rise glass buildings are widely found in cities both at home and abroad. Bird strikes caused by high-rise glass buildings have attracted widespread attention. Bird strikes refer to the problem of birds colliding and dying in flight due to the transparency and reflective properties of large areas of glass, which makes them less visible to birds.

[0003] To avoid the ecological crisis caused by the low visibility of birds in glass curtain walls, bird-proof glass curtain wall technology has become a hot topic in the industry. To this end, industry scholars have conducted research and design. For example, existing technology, such as patent CN 115215558 A, proposes a bird-proof glass that uses a film pattern formed on the glass substrate. While this can prevent bird strikes, it results in poor light transmission for users, as the pattern obstructs the view. Furthermore, the poor adhesion between the pattern and the glass substrate leads to problems such as pattern detachment or shrinkage.

[0004] To address the aforementioned issues, scholars have conducted further research on bird-strike-proof glass. Existing technologies, such as patent CN118271001A, propose a bird-strike-proof coated glass. This involves preparing at least a first titanium oxide layer, a first dielectric layer, and a second titanium oxide layer on a glass substrate, i.e., directly coating the glass substrate. Although this can reflect or scatter ultraviolet light to provide birds with visible light and serve as a warning, the formation of the coating requires extremely high precision in glass processing. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a photocurable adhesive based on photoluminescence that is visible to birds without being seen by humans, avoids the problem of poor adhesion between the pattern and the glass substrate, has low process requirements, and has good visual light transmittance for users. This includes a glass curtain wall.

[0006] The purpose of this disclosure is achieved through the following technical solution: A photocurable adhesive based on photoluminescence and bird recognition is used to coat and cure on a substrate film. The photocurable adhesive comprises the following components in parts by weight: Epoxy resin: 30-80 parts; Diluent: 20-30 parts; Fluorescent material: 1-2 parts; Photoinitiator: 0.1-3 parts; Antioxidant: 1-3 parts; Adhesion promoter: 0.5-2 parts; Leveling agent: 0.05-0.2 parts; After the photocurable adhesive is cured on the substrate film, a bird's-eye view pattern layer is obtained, and the glass interlayer with the bird's-eye view pattern layer is used to be clamped in the glass. The emission wavelength of the bird-view pattern layer is 300 nm - 600 nm; The light transmittance of the glass interlayer is greater than or equal to 90%; The thickness of the bird-view pattern layer is less than or equal to 100 micrometers, the thickness of the substrate film is less than or equal to 0.2 mm, the coefficient of thermal expansion of the substrate film is 20 ppm / ℃-100 ppm / ℃, and the coefficient of thermal expansion of the bird-view pattern layer is 30 ppm / ℃-120 ppm / ℃.

[0007] In one embodiment, the epoxy resin is an alicyclic epoxy resin or an epoxy acrylate resin.

[0008] In one embodiment, the diluent is at least one selected from isobornyl acrylate, hydroxyethyl methacrylate, isobornyl methacrylate, trimethylolpropane trimethacrylate, isooctyl acrylate, tetrahydrofuran acrylate, 1,2-epoxy-4-vinylcyclohexane, 3,4-epoxycyclohexylmethyl methacrylate, 3,4-epoxycyclohexyl methacrylate, 3-ethyl-3-(methacryloyloxymethyl)oxetane, 3-[(allyloxy)methyl]-3-ethyloxetane, 3-ethyl-3-(acryloyloxymethyl)oxetane, 3-ethyl-3-hydroxymethyloxetane, and 3,3'-(oxybismethylene)bis(3-ethyl)oxetane.

[0009] In one embodiment, the substrate film is a PET film.

[0010] In one embodiment, the fluorescent material is at least one of zinc sulfide, zinc silicate, europium oxide, rhodamine, OB, and fluorescein isothiocyanate.

[0011] In one embodiment, the adhesive strength of the bird-view pattern layer is 3B to 5B; and / or, The viscosity range of the bird-view pattern layer is from 200 cps / 25℃ to 2000 cps / 25℃.

[0012] In one embodiment, the photoinitiator is at least one selected from TPO, 1173, 184, 369, 651, 784, 819, 907, UVI6992, and PAG-201; and / or, The adhesion promoter is at least one of A-1100, A-187, A-174, A-151, A-171, and A-172.

[0013] A method for preparing a photocurable adhesive based on photoluminescence and bird recognition, used to prepare the photocurable adhesive described in any of the above embodiments, the preparation method comprising: Epoxy resin, diluent, fluorescent material, and antioxidant are weighed according to the weight proportions and added to the dispersion vessel respectively. The dispersion vessel is heated to a first preset temperature, and the dispersion vessel is stirred and dispersed at a first preset dispersion speed and a first preset stirring speed for a first preset time until there are no obvious insoluble particles in the liquid. Control the dispersion vessel to cool down to the second preset temperature; The photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully disperse the photoinitiator at a second preset dispersion speed and a second preset stirring speed for a second preset time until the photoinitiator is completely dissolved in the liquid. Add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid. The homogeneous liquid was filtered to obtain a light-curing adhesive solution; The light-curing adhesive is dispensed and stored away from light.

[0014] A glass curtain wall includes a substrate film and a bird's-eye view pattern layer, wherein the bird's-eye view pattern layer is obtained by coating the substrate film with the photocurable adhesive described in any of the above embodiments and then curing it.

[0015] A method for manufacturing a glass curtain wall, used to manufacture the aforementioned glass curtain wall; the manufacturing method includes: Epoxy resin, diluent, fluorescent material, and antioxidant are weighed according to the weight proportions and added to the dispersion vessel respectively. The dispersion vessel is heated to a first preset temperature, and the dispersion vessel is stirred and dispersed at a first preset dispersion speed and a first preset stirring speed for a first preset time until there are no obvious insoluble particles in the liquid. Control the dispersion vessel to cool down to the second preset temperature; The photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully disperse the photoinitiator at a second preset dispersion speed and a second preset stirring speed for a second preset time until the photoinitiator is completely dissolved in the liquid. Add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid. The homogeneous liquid was filtered to obtain a light-curing adhesive solution; The photocurable adhesive is coated or screen-printed onto the substrate film, and the photocurable adhesive on the substrate film is photocured to obtain a bird's-eye pattern layer.

[0016] Compared with the prior art, this disclosure has at least the following advantages: 1) The above-mentioned photocurable adhesive based on photoluminescence and bird recognition, because the photoinitiator generates free radicals / cations under light (such as ultraviolet light), the free radicals / cations attack the epoxy groups of epoxy resin and diluent or the double bonds of diluent, causing double bond addition polymerization, causing epoxy group ring-opening polymerization, reacting to generate ether bonds, thereby increasing the number of crosslinking points, which can modify epoxy resin to generate secondary crosslinking. At the same time, the diluent reduces the viscosity of epoxy resin, so that the fluorescent material can be better dispersed and dissolved in epoxy resin, allowing the fluorescent material to be embedded into the network structure of epoxy resin reactively or non-reactively, forming a stable network polymer after curing; 2) The photocurable adhesive is a mixed system of free radicals and cationic substances, which reacts faster to photocuring (such as LED photocuring), thus accelerating the surface drying and film formation of the adhesive film. Moreover, the bird's-eye view pattern layer obtained after the photocurable adhesive is cured on the substrate film has a high transmittance, and the light transmittance of the glass film is greater than or equal to 90%, which makes the bird's-eye view pattern layer have good visual light transmission for users. 3) When the thickness of the bird-view pattern layer is relatively thin (less than or equal to 100 micrometers) and the thickness of the substrate film is less than or equal to 200 micrometers, the introduction of an adhesion promoter into the UV-curable adhesive improves the bonding strength between the bird-view pattern layer and the substrate film after curing. This results in good adhesion between the bird-view pattern layer and the substrate film. Furthermore, the coefficient of thermal expansion of the substrate film is 20 ppm / ℃-100 ppm / ℃, while the coefficient of thermal expansion of the bird-view pattern layer is 30 ppm / ℃-120 ppm / ℃. This good consistency between the coefficients of thermal expansion of the bird-view pattern layer and the substrate film ensures that the pattern remains unchanged under harsh conditions due to substrate deformation. It also facilitates the maintenance of the integrity of the bird-view pattern shape formed after the application of the UV-curable adhesive, avoiding issues such as pattern detachment or shrinkage peeling. Since the glass laminate with the bird-view pattern layer is sandwiched within the glass, and the bird-view pattern layer is not directly formed on the glass, the problem of poor adhesion between the pattern and the glass substrate is avoided. 4) The above-mentioned photocurable adhesive can be coated or screen-printed on the substrate film to obtain a bird's-eye view pattern layer through photocuring. Compared with the method of forming film patterns on glass substrates, it is not limited by film size and has lower processing requirements compared with the coating method. 5) Since the emission wavelength of the bird-view pattern layer is 300nm-600nm, and the light transmittance of the glass film is greater than or equal to 90%, the effect of "birds can see but people cannot" is achieved. That is, birds can see but people cannot see, which not only avoids the problem of birds hitting the glass, but also avoids the problem of the bird-view pattern layer affecting the human field of vision. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the steps of a method for preparing a photocurable adhesive based on photoluminescence and bird recognition, according to one embodiment. Figure 2 This is a flowchart illustrating the steps of a method for manufacturing a glass curtain wall according to one embodiment. Detailed Implementation

[0019] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: An embodiment of the present invention provides a photocurable adhesive based on photoluminescence and bird recognition for coating and curing onto a substrate film. Further, the photocurable adhesive comprises the following components in parts by weight: Epoxy resin: 30-80 parts; Diluent: 20-30 parts; Fluorescent material: 1-2 parts; Photoinitiator: 0.1-3 parts; Antioxidant: 1-3 parts; Adhesion promoter: 0.5-2 parts; Leveling agent: 0.05-0.2 parts.

[0023] In one embodiment, the photocurable adhesive is cured on the substrate film to obtain a bird's-eye view pattern layer, and the glass interlayer with the bird's-eye view pattern layer is used to be sandwiched within the glass; the emission wavelength of the bird's-eye view pattern layer is 300 nm - 600 nm; the light transmittance of the glass interlayer is greater than or equal to 90%; the thickness of the bird's-eye view pattern layer is less than or equal to 100 micrometers, the thickness of the substrate film is less than or equal to 200 micrometers, the coefficient of thermal expansion of the substrate film is 20 ppm / ℃ - 100 ppm / ℃, and the coefficient of thermal expansion of the bird's-eye view pattern layer is 30 ppm / ℃ - 120 ppm / ℃.

[0024] It is understandable that both the substrate film and the bird's-eye view pattern layer expand with temperature changes before being clamped in the glass. Since the coefficient of thermal expansion of the substrate film is 20 ppm / ℃-100 ppm / ℃ and that of the bird's-eye view pattern layer is 30 ppm / ℃-120 ppm / ℃, the coefficients of thermal expansion of the bird's-eye view pattern layer and the substrate film are well consistent. This results in a small difference in the expansion coefficients of the substrate film and the bird's-eye view pattern layer in the actual use environment (at temperatures ranging from -50℃ to 50℃). In other words, the coefficients of thermal expansion of the substrate film and the bird's-eye view pattern layer are well matched, preventing the bird's-eye view pattern layer from peeling off due to temperature changes. Furthermore, since the glass film is clamped inside the glass during use, the peeling of the bird's-eye view pattern layer relative to the substrate film is completely avoided. This reliably ensures that the pattern does not change due to substrate deformation under harsh conditions, and easily achieves the integrity of the pattern shape of the bird's-eye view pattern layer formed after the application of the photocurable adhesive. Compared to existing technologies that form films directly on glass, which often result in film peeling or even detachment due to the significant difference in expansion coefficients between the film and the glass, the aforementioned bird-view pattern layer has a smaller difference in expansion coefficients compared to the substrate film. Furthermore, the bird-view pattern layer has stronger adhesion to the substrate film, thus avoiding the problem of the pattern easily detaching or shrinking.

[0025] The aforementioned photocurable adhesive based on photoluminescence and bird recognition utilizes a photoinitiator that generates free radicals / cations under light (such as ultraviolet light). These free radicals / cations attack the epoxy groups or double bonds of the epoxy resin and diluent, causing addition polymerization of the double bonds and ring-opening polymerization of the epoxy groups, generating ether bonds and increasing the number of crosslinking points. This modifies the epoxy resin to produce secondary crosslinking. Simultaneously, the diluent reduces the viscosity of the epoxy resin, allowing the fluorescent material to be better dispersed and dissolved within it. This enables the fluorescent material to be reactively or non-reactively embedded into the network structure of the epoxy resin, forming a stable network polymer after curing. The photocurable adhesive is a hybrid system of free radicals and cations, resulting in a faster photocuring reaction (such as LED light curing), accelerating the surface drying and film formation of the adhesive film. Furthermore, the bird-view pattern layer obtained after curing the photocurable adhesive on the substrate film has high transmittance, and the light transmittance of the glass film is greater than or equal to 90%, giving the bird-view pattern layer good visual transparency for users. When the thickness of the bird-view pattern layer is relatively thin (less than or equal to 100 micrometers) and the thickness of the substrate film is less than or equal to 200 micrometers, the introduction of an adhesion promoter into the UV-curable adhesive improves the bonding strength between the bird-view pattern layer and the substrate film after curing. This results in good adhesion between the bird-view pattern layer and the substrate film. Furthermore, the coefficient of thermal expansion of the substrate film is 20 ppm / ℃-100 ppm / ℃, while the coefficient of thermal expansion of the bird-view pattern layer is 30 ppm / ℃-120 ppm / ℃. This good consistency between the coefficients of thermal expansion of the bird-view pattern layer and the substrate film ensures that the pattern remains unchanged under harsh conditions due to substrate deformation. It also facilitates the maintenance of the integrity of the bird-view pattern shape formed after applying the UV-curable adhesive, avoiding issues such as pattern detachment or shrinkage peeling. Since the glass laminate with the bird-view pattern layer is sandwiched within the glass, and the bird-view pattern layer is not directly formed on the glass, the problem of poor adhesion between the pattern and the glass substrate is avoided.

[0026] It is understandable that the aforementioned photocurable adhesive can be coated or screen-printed onto the substrate film to obtain a bird's-eye view pattern layer through photocuring. Compared to the method of forming a film pattern on a glass substrate, it is not limited by the film size, and the processing requirements are lower than those of the coating method. Since the emission wavelength of the bird's-eye view pattern layer is 300 nm - 600 nm, and the light transmittance of the glass film is greater than or equal to 90%, the effect of "birds can see but people cannot" is achieved, that is, birds can see but people cannot see. This not only avoids the problem of birds hitting the glass, but also avoids the problem of the bird's-eye view pattern layer affecting the human field of vision.

[0027] In one embodiment, the epoxy resin is an alicyclic epoxy resin or an epoxy acrylate resin. Specifically, the epoxy resin may be at least one of the following: Daicel EPOLEAD GT401, Daicel EHPE 3150, Daicel CELLOXIDE 2081, Donghua New Materials S-60, Donghua New Materials S-184, Donghua New Materials S-186, Sartoma CN8100NS, Sartoma CN104NS, Sartoma CN104A80, Sartoma CN110A60NS, and Donghua New Materials DE1701; no particular limitation is made here.

[0028] In one embodiment, the diluent is isoborneol acrylate (Jiangsu Tianyin TY-IBOA), hydroxyethyl methacrylate (Jiangsu Tianyin TY-HEMA), isoborneol methacrylate (Jiangsu Sanmu IBOMA), trimethylolpropane trimethacrylate (Jiangsu Sanmu TMPTMA), isooctyl acrylate (Jiangsu Sanmu SM-2EHA), tetrahydrofuran acrylate (Jiangsu Sanmu SM-THFA), 1,2-epoxy-4-vinylcyclohexane (Tatel Technology TTA11), 3,4-epoxycyclohexylmethyl methacrylate (Tatel Technology TTA15), 3,4- At least one of the following is not specifically limited here: epoxycyclohexyl methacrylate (TTA16 by Taitel Technology), 3-ethyl-3-(methacryloyloxymethyl)oxetane (OXT049 by Gurun Technology), 3-[(allyloxy)methyl]-3-ethyloxetane (OXT101 by Gurun Technology), 3-ethyl-3-(acryloyloxymethyl)oxetane (OXT103 by Gurun Technology), 3-ethyl-3-hydroxymethyloxetane (TCM101 by Qiangli Technology), and 3,3'-(oxybismethylene)bis(3-ethyl)oxetane (TCM201 by Qiangli Technology).

[0029] Furthermore, the diluent is an aliphatic acrylate, meaning it does not contain benzene rings, which reliably reduces the yellowing of the UV-cured adhesive under light irradiation and further improves the light transmittance of the bird's-eye pattern layer.

[0030] In one embodiment, the fluorescent material is at least one of zinc sulfide, zinc silicate, or europium oxide.

[0031] In one embodiment, the adhesive strength of the bird-view pattern layer is 3B to 5B, giving the bird-view pattern layer good adhesion; and / or, In one embodiment, the viscosity of the bird-view pattern layer is in the range of 200 cps / 25°C to 2000 cps / 25°C, so that the bird-view pattern layer is well formed on the substrate film, and so that the bird-view pattern layer is well adhered to the substrate film.

[0032] In one embodiment, the photoinitiator is at least one selected from TPO, 1173, 184, 369, 651, 784, 819, 907, UVI6992, and PAG-201. Specifically, the photoinitiator is at least one selected from BASF Irgacure TPO, BASF Irgacure 184, BASF Irgacure 369, BASF Irgacure 651, BASF Irgacure 784, BASF Irgacure 819, BASF Irgacure 907, BASF Irgacure 1173, Donghua New Materials UVI6992, and Qiangli New Materials PAG-201, without particular limitation. And / or, In one embodiment, the adhesion promoter is at least one of A-1100, A-187, A-174, A-151, A-171, and A-172, all of which are selected from Momentive Advanced Materials Group, and no particular limitation is made here.

[0033] Furthermore, the leveling agent is at least one of BYK333, BYK379, BYK3500, BYK342, BYK378, BYK3550, and BYK3530, all manufactured by BYK Chemical.

[0034] In one embodiment, the antioxidant is at least one of BASF Irganox B900, BASF Irganox B215, BASF Irganox 1098, and BASF Irganox 1010, without particular limitation.

[0035] In one embodiment, the substrate film is a PET film, which allows the photocurable adhesive to adhere well to the substrate film, thereby allowing the bird-view pattern layer to be well cured and formed on the substrate film.

[0036] To better achieve the integrity of the bird's-eye view pattern layer formed after the application of the photocurable adhesive, the molecular weight of the epoxy resin is further set to 2,000 to 50,000, and the molecular weight of the PET is set to 25,000 to 30,000. This gives the substrate film superior flexibility after forming a thinner layer (i.e., the thickness of the bird's-eye view pattern layer is less than or equal to 100 micrometers). At the same time, the bird's-eye view pattern layer is better suited to be formed on the substrate film, resulting in many beneficial effects, such as avoiding the bird's-eye view pattern layer from being hard and brittle.

[0037] This application also provides a method for preparing a photocurable adhesive based on photoluminescence and bird recognition, used to prepare the photocurable adhesive described in any of the above embodiments. The preparation method includes some or all of the following steps: S101, the epoxy resin, diluent, fluorescent material and antioxidant are weighed according to the weight parts and added to the dispersion vessel respectively. The dispersion vessel is heated to the first preset temperature and the dispersion vessel is stirred and dispersed for a first preset time at the first preset dispersion speed and the first preset stirring speed until there are no obvious insoluble particles in the liquid.

[0038] Furthermore, the dispersion vessel is a double planetary dispersion vessel, which gives it a better dispersion effect.

[0039] Furthermore, the first preset temperature is 40℃~50℃, the first preset dispersion speed is 1000 rpm~1500 rpm, the first preset stirring speed is 60 rpm~80 rpm, and the first preset time is 30 minutes~60 minutes, so that the dispersion vessel can effectively disperse the epoxy resin, diluent, fluorescent material, and antioxidant. In this embodiment, the first preset temperature is 45℃, the first preset dispersion speed is 1200 rpm, the first preset stirring speed is 70 rpm, and the first preset time is 40 minutes.

[0040] S103, control the dispersion vessel to cool down to the second preset temperature.

[0041] In this embodiment, the second preset temperature is 20℃~30℃. Specifically, the second preset temperature is 25℃.

[0042] S105, the photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the photoinitiator is completely dissolved in the liquid.

[0043] Furthermore, the second preset dispersion speed is 300 rpm to 500 rpm, the second preset stirring speed is 65 rpm to 75 rpm, and the second preset time is 20 minutes to 30 minutes, so that the photoinitiator dissolves in the liquid more quickly. In this embodiment, the second preset dispersion speed is 400 rpm, the second preset stirring speed is 70 rpm, and the second preset time is 25 minutes.

[0044] S107, add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid.

[0045] S109, the homogeneous liquid is filtered to obtain a UV-curable adhesive. Further, the homogeneous liquid is filtered using a 200-400 mesh filter to obtain the UV-curable adhesive.

[0046] S111, the light-curing adhesive is dispensed and stored away from light to ensure the shelf life of the cured adhesive.

[0047] The above-described method for preparing a photocurable adhesive based on photoluminescence and bird recognition involves first weighing epoxy resin, diluent, fluorescent material, and antioxidant according to their respective weight proportions and adding them to a dispersion vessel. The dispersion vessel is then heated to a first preset temperature, and stirred at a first preset dispersion speed and a first preset stirring speed for a first preset time until no obvious insoluble particles remain in the liquid. Next, the dispersion vessel is cooled to a second preset temperature. Then, a photoinitiator is added to the dispersion vessel, and stirred at a second preset dispersion speed and a second preset stirring speed for a second preset time until the photoinitiator is completely dissolved in the liquid. Next, an adhesion promoter is added to the dispersion vessel, and stirred at a second preset dispersion speed and a second preset stirring speed for a second preset time until the entire composition becomes a homogeneous liquid. The homogeneous liquid is then filtered to obtain the photocurable adhesive. Finally, the photocurable adhesive is dispensed and stored away from light.

[0048] The photocurable adhesive obtained by the above preparation method generates free radicals / cations under light (such as ultraviolet light) irradiation by the photoinitiator. These free radicals / cations attack the epoxy groups or double bonds of the epoxy resin and diluent, causing double bond addition polymerization and epoxy ring-opening polymerization to generate ether bonds, thereby increasing the number of crosslinking points. This allows for modification of the epoxy resin to produce secondary crosslinking. Simultaneously, the diluent reduces the viscosity of the epoxy resin, allowing the fluorescent material to be better dispersed and dissolved within it. This enables the fluorescent material to be reactively or non-reactively embedded into the network structure of the epoxy resin, forming a stable network polymer after curing. The photocurable adhesive is a hybrid system of free radicals and cations, which is beneficial for photocuring. The faster chemical reaction (such as LED light curing) accelerates the surface drying and film formation of the adhesive film. Furthermore, the bird-view pattern layer obtained after curing the light-cured adhesive on the substrate film has high transmittance, and the light transmittance of the glass interlayer is greater than or equal to 90%, giving the bird-view pattern layer good visual transparency for users. Under conditions where the thickness of the bird-view pattern layer is relatively thin (less than or equal to 100 micrometers) and the thickness of the substrate film is less than or equal to 200 micrometers, the introduction of an adhesion promoter in the light-cured adhesive improves the adhesion strength between the bird-view pattern layer and the substrate film after curing. This results in good bonding between the bird-view pattern layer and the substrate film, and the substrate film has a coefficient of thermal expansion of 20. The expansion coefficient of the bird's-view pattern layer is 30 ppm / ℃-120 ppm / ℃, meaning that the expansion coefficient of the bird's-view pattern layer is well consistent with that of the substrate film. This reliably ensures that the pattern does not change due to substrate deformation under harsh conditions, and easily achieves the integrity of the pattern shape formed after the application of the photocurable adhesive, avoiding problems such as pattern peeling or shrinkage. Since the glass film with the bird's-view pattern layer is used to be sandwiched inside the glass, the bird's-view pattern layer is not directly formed on the glass, avoiding the problem of poor adhesion between the pattern and the glass substrate.

[0049] It is understandable that the aforementioned photocurable adhesive can be coated or screen-printed onto the substrate film to obtain a bird's-eye view pattern layer through photocuring. Compared to the method of forming a film pattern on a glass substrate, it is not limited by the film size, and the processing requirements are lower than those of the coating method. Since the emission wavelength of the bird's-eye view pattern layer is 300nm-600nm, and the light transmittance of the glass film is greater than or equal to 90%, the effect of "birds can see but people cannot" is achieved, that is, birds can see but people cannot see. This not only avoids the problem of birds hitting the glass, but also avoids the problem of the bird's-eye view pattern layer affecting the human field of vision.

[0050] This application also provides a glass curtain wall, including a substrate film and a bird's-eye view pattern layer, wherein the bird's-eye view pattern layer is obtained by coating the substrate film with the photocurable adhesive described in any of the above embodiments and then curing it.

[0051] This application also provides a method for manufacturing a glass curtain wall, used to manufacture the aforementioned glass curtain wall; the manufacturing method includes some or all of the following steps: S201, the epoxy resin, diluent, fluorescent material and antioxidant are weighed according to the weight parts and added to the dispersion vessel respectively. The dispersion vessel is heated to the first preset temperature and the dispersion vessel is stirred and dispersed for a first preset time at the first preset dispersion speed and the first preset stirring speed until there are no obvious insoluble particles in the liquid.

[0052] Furthermore, the dispersion vessel is a double planetary dispersion vessel, which gives it a better dispersion effect.

[0053] Furthermore, the first preset temperature is 40℃~50℃, the first preset dispersion speed is 1000 rpm~1500 rpm, the first preset stirring speed is 60 rpm~80 rpm, and the first preset time is 30 minutes~60 minutes, so that the dispersion vessel can effectively disperse the epoxy resin, diluent, fluorescent material, and antioxidant. In this embodiment, the first preset temperature is 45℃, the first preset dispersion speed is 1200 rpm, the first preset stirring speed is 70 rpm, and the first preset time is 40 minutes.

[0054] S203, control the dispersion vessel to cool down to the second preset temperature.

[0055] In this embodiment, the second preset temperature is 20℃~30℃. Specifically, the second preset temperature is 25℃.

[0056] S205, the photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the photoinitiator is completely dissolved in the liquid.

[0057] Furthermore, the second preset dispersion speed is 300 rpm to 500 rpm, the second preset stirring speed is 65 rpm to 75 rpm, and the second preset time is 20 minutes to 30 minutes, so that the photoinitiator dissolves in the liquid more quickly. In this embodiment, the second preset dispersion speed is 400 rpm, the second preset stirring speed is 70 rpm, and the second preset time is 25 minutes.

[0058] S207, add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid.

[0059] S209, the homogeneous liquid is filtered to obtain a UV-curable adhesive. Further, the homogeneous liquid is filtered using a 200-400 mesh filter to obtain the UV-curable adhesive.

[0060] S211, the photocurable adhesive is coated or screen-printed on the substrate film, and the photocurable adhesive on the substrate film is photocured to obtain a bird's-eye pattern layer.

[0061] The aforementioned glass curtain wall involves coating or screen-printing the photocurable adhesive onto a substrate film. After photocuring, the photocurable adhesive on the substrate film forms a bird's-eye view pattern layer. Because the photoinitiator generates free radicals / cations under light (such as ultraviolet light), these free radicals / cations attack the epoxy groups or double bonds of the epoxy resin and diluent, causing addition polymerization of the double bonds and ring-opening polymerization of the epoxy groups, generating ether bonds and increasing the number of crosslinking points. This modifies the epoxy resin to produce secondary crosslinking. Simultaneously, the diluent reduces the viscosity of the epoxy resin, allowing the fluorescent material to be better dispersed and dissolved within the epoxy resin. This allows the fluorescent material to be reactively or non-reactively embedded into the network structure of the epoxy resin, forming a stable network polymer after curing. The photocurable adhesive is composed of free radicals and cations. The hybrid system reacts faster to photocuring (such as LED photocuring), accelerating the surface drying and film formation of the adhesive film. Furthermore, the light transmittance of the glass laminate is greater than or equal to 90%, giving the bird's-eye view pattern layer good visual transparency for the user. Under conditions where the thickness of the bird's-eye view pattern layer is relatively thin (less than or equal to 100 micrometers) and the thickness of the substrate film is less than or equal to 200 micrometers, the introduction of an adhesion promoter into the photocurable adhesive improves the bonding strength between the bird's-eye view pattern layer and the substrate film after curing. This results in good adhesion between the bird's-eye view pattern layer and the substrate film, and the substrate film has a coefficient of thermal expansion of 20. The expansion coefficient of the bird's-view pattern layer is 30 ppm / ℃-120 ppm / ℃, meaning that the expansion coefficient of the bird's-view pattern layer is well consistent with that of the substrate film. This reliably ensures that the pattern does not change due to substrate deformation under harsh conditions, and easily achieves the integrity of the pattern shape formed after the application of the photocurable adhesive, avoiding problems such as pattern peeling or shrinkage. Since the glass film with the bird's-view pattern layer is used to be sandwiched inside the glass, the bird's-view pattern layer is not directly formed on the glass, avoiding the problem of poor adhesion between the pattern and the glass substrate.

[0062] The aforementioned photocurable adhesive can be coated or screen-printed onto a substrate film to obtain a bird's-eye view pattern layer through photocuring. Compared to molding film patterns on a glass substrate, this method is not limited by film size and has lower processing requirements compared to coating methods. Since the emission wavelength of the bird's-eye view pattern layer is 300 nm - 600 nm, and the light transmittance of the glass film is greater than or equal to 90%, it achieves the effect of "birds can see but people cannot," meaning that birds can see but people cannot. This not only avoids the problem of birds hitting the glass but also avoids the problem of the bird's-eye view pattern layer affecting the human field of vision.

[0063] The following are some specific examples. When %, it refers to a percentage by weight. It should be noted that the following examples do not exhaustively list all possible scenarios, and unless otherwise specified, the materials used in the examples are commercially available.

[0064] Example 1 This embodiment provides a photocurable adhesive based on photoluminescence and bird recognition, which is composed of the following components in parts by weight: Epoxy resin (Sartoma CN8100NS): 75 parts; diluent (Tatetech TTA15): 25 parts; fluorescent material zinc sulfide (Denki Chemical ZnS:Ag): 0.5 parts; photoinitiator (BASF Irgacure TPO): 1 part; photoinitiator (Donghua New Materials UVI6992): 1 part; antioxidant (BASF Irganox B900): 1 part; adhesion promoter (Momentive Advanced Materials Group A-187): 0.75 parts; leveling agent (BYK333): 0.05 parts.

[0065] This embodiment also provides a method for preparing a photocurable adhesive based on photoluminescence and bird recognition, including the following steps: 1) Weigh each component according to the weight proportions, and add epoxy resin, diluent, fluorescent material, antioxidant, and adhesion promoter into a double planetary dispersion vessel. Control the temperature of the dispersion vessel to 45°C, and control the dispersion speed of the dispersion vessel at 1000 rpm to 1500 rpm and the stirring speed at 70 rpm. Stir and disperse thoroughly for 30 to 60 minutes until there are no obvious insoluble particles in the liquid. 2) Control the temperature of the dispersion vessel to 25°C; 3) Add the photoinitiator into the dispersion vessel, control the dispersion speed of the dispersion vessel at 300 rpm to 500 rpm, and stir at 70 rpm for 20 to 30 minutes until the photoinitiator is completely dissolved in the liquid; 4) Add the adhesion promoter to the dispersion vessel, control the dispersion speed of the dispersion vessel at 300 rpm to 500 rpm, and stir at 70 rpm for 20 to 30 minutes until the whole component is a homogeneous liquid; 5) Filter the homogeneous liquid using a 200-400 mesh filter; 6) Pack the contents into black or amber bottles or containers and store them away from light.

[0066] Example 2 The difference from Example 1 is that the epoxy resin is Daicel EPOLEAD GT401.

[0067] Example 3 The difference from Example 1 is that the epoxy resin is Donghua New Materials DE1701.

[0068] Example 4 The difference from Example 1 is that the diluent is replaced with Jiangsu Tianyin TY-IBOA.

[0069] Example 5 The difference from Example 1 is that the diluent is replaced with OXT049 from Gurun Technology.

[0070] Example 6 The difference from Example 1 is that the fluorescent material is replaced with zinc silicate (Merck Zn2SiO4:Mn). Example 7 The difference from Example 1 is that the fluorescent material is replaced with europium oxide (GE Y2O3:Eu). 3 ⁺) Example 8 The difference from Example 1 is that the photoinitiator was replaced by BASF Irgacure TPO with BASF Irgacure 1173.

[0071] Example 9 The difference from Example 1 is that the photoinitiator was replaced by Donghua New Materials UVI6992 with Qiangli New Materials PAG-201.

[0072] Example 10 The difference from Example 1 is that the antioxidant is replaced with BASF Irganox B215.

[0073] Example 11 The difference from Example 1 is that the antioxidant is replaced with BASF Irganox 1098.

[0074] Example 12 The difference from Example 1 is that the adhesion promoter is Momentive Advanced Materials Group A-174.

[0075] Example 13 The difference from Example 1 is that the adhesion promoter is Momentive Advanced Materials Group A-1100.

[0076] Example 14 The difference from Example 1 is that the leveling agent is replaced with BYK3500 from BYK Chemicals.

[0077] Example 15 The difference from Example 1 is that the leveling agent is replaced with BYK378 from BYK Chemical.

[0078] Comparative Example 1 The difference from Example 1 is that the amount of epoxy resin (Sartoma CN8100NS) is 35 parts by weight.

[0079] Comparative Example 2 The difference from Example 1 is that the amount of epoxy resin (Sartoma CN8100NS) is 65 parts by weight.

[0080] Comparative Example 3 The difference from Example 1 is that the mass fraction of the diluent (TTA15) is 35 parts.

[0081] Comparative Example 4 The difference from Example 1 is that the mass fraction of the fluorescent material zinc sulfide (Nippon Denki Chemical ZnS:Ag) is 2 parts.

[0082] Comparative Example 5 The difference from Example 1 is that the photoinitiator (BASF Irgacure TPO) is in the form of 2 parts by mass.

[0083] Comparative Example 6 The difference from Example 1 is that the antioxidant (BASF Irganox B900) is in parts by weight of 3.

[0084] Comparative Example 7 The difference from Example 1 is that the adhesion promoter (Momentive Advanced Materials Group A-187) has a mass fraction of 2 parts.

[0085] Comparative Example 8 The difference from Example 1 is that the mass fraction of the leveling agent (BYK333) is 0.2 parts.

[0086] Comparative Example 9 The difference from Example 1 is that no adhesion promoter is added.

[0087] Comparative Example 10 The difference from Example 1 is that the diluent is 2-phenoxyethyl acrylate (Jiangsu Tianyin TY-PHEA).

[0088] Comparative Example 11 The difference from Example 1 is that the epoxy resin is replaced with a low molecular weight (i.e., a molecular weight of 252) epoxy resin (3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate, specifically CELLOXIDE 2021P).

[0089] The samples obtained in Examples 1-15 and Comparative Examples 1-11 were subjected to performance tests, and the test results are shown in Table 1 below: Table 1 Performance test results of the examples and comparative examples performance Appearance Viscosity (cps / 25℃) Curing energy (mJ / cm2) Bond strength (100 cross-cut adhesion test) Transmittance (%) Example 1 Slightly yellow and transparent 1659 3500 5B 95 Example 2 Slightly yellow and transparent 1438 3500 5B 96 Example 3 Slightly yellow and transparent 1726 3500 5B 93 Example 4 Slightly yellow and transparent 1595 3500 4B 95 Example 5 Slightly yellow and transparent 1693 3500 5B 94 Example 6 Slightly yellow and transparent 1647 3500 5B 93 Example 7 Slightly yellow and transparent 1655 3500 5B 95 Example 8 Slightly yellow and transparent 1623 3500 4B 93 Example 9 Slightly yellow and transparent 1663 3500 4B 96 Example 10 Slightly yellow and transparent 1661 3500 4B 94 Example 11 Slightly yellow and transparent 1655 3500 5B 94 Example 12 Slightly yellow and transparent 1623 3500 5B 95 Example 13 Slightly yellow and transparent 1675 3500 5B 95 Example 14 Slightly yellow and transparent 1672 3500 5B 95 Example 15 Slightly yellow and transparent 1652 3500 5B 95 Comparative Example 1 Slightly yellow and transparent 390 3500 3B 98 Comparative Example 2 Slightly yellow and transparent 1320 3500 5B 96 Comparative Example 3 Slightly yellow and transparent 986 3500 3B 95 Comparative Example 4 Slightly yellow and transparent 1640 3500 4B 92 Comparative Example 5 Slightly yellow and transparent 1661 3500 4B 91 Comparative Example 6 Slightly yellow and transparent 1673 3500 4B 92 Comparative Example 7 Slightly yellow and transparent 1598 3500 5B 93 Comparative Example 8 Slightly yellow and transparent 1653 3500 5B 95 Comparative Example 9 Slightly yellow and transparent 1702 3500 2B 94 Comparative Example 10 Yellow transparent 1628 3500 3B 86 Comparative Example 11 Slightly yellow and transparent 113 3500 2B 94 The test substrate for “adhesive strength” in Table 1 is PET (adhesive layer thickness is 0.1 mm), and it is characterized by the cross-cut test method. The test method for "transmittance" in Table 1 is as follows: The adhesive is applied to a PET substrate (adhesive layer thickness 0.1 mm), and the transmittance is 3500 mJ / cm². 2 After energy solidification, the sample was placed in the sample and the transmittance was tested using an ultraviolet spectrophotometer. The test method for “Appearance” in Table 1 is to evaluate transparency using ultraviolet spectrophotometry.

[0090] As shown in Table 1, the viscosities of Examples 1-15 and Comparative Examples 4-10 are all relatively good. Comparative Example 1 has a lower mass fraction of epoxy resin, resulting in a lower viscosity of the UV-cured adhesive. Although Comparative Example 2 has a lower mass fraction of epoxy resin, it is still higher than Comparative Example 1, resulting in a slightly lower viscosity of the UV-cured adhesive. Comparative Example 3 has the same mass fraction of epoxy resin as Example 1, but it contains more diluent, leading to a lower viscosity of the UV-cured adhesive. Therefore, both a lower mass fraction of epoxy resin and a higher mass fraction of diluent have a certain impact on the viscosity of the UV-cured adhesive.

[0091] As can be seen from Examples 1, 12 and 13, adding different types of adhesion promoters to the photocurable adhesive can improve the adhesion strength of the photocurable adhesive on the substrate film.

[0092] As can be seen from Examples 1-15 and Comparative Example 9, when the thickness of the bird-view pattern layer is relatively thin, i.e. less than or equal to 100 micrometers, and the substrate film on which the bird-view pattern layer is formed is less than or equal to 0.2 mm, the adhesion strength between the bird-view pattern layer and the substrate film after curing is improved due to the introduction of an adhesion promoter in the photocurable adhesive of Examples 1-15; while the adhesion strength of the adhesive on the substrate film is poor in Comparative Example 9 because no adhesion promoter is added.

[0093] Examples 1-15 and Comparative Example 10 show that the aliphatic diluent added to the UV-curable adhesive reduces the yellowing characteristic of the reaction. The light transmittance of the bird-view pattern layer substrate film formed after curing the UV-curable adhesive in Examples 1-15 is greater than or equal to 90%, giving the bird-view pattern layer good visual light transmittance for users. However, the diluent used in Comparative Example 10 is 2-phenoxyethyl acrylate (Jiangsu Tianyin TY-PHEA), i.e., a non-aliphatic diluent, and the light transmittance of the bird-view pattern layer substrate film formed after curing the UV-curable adhesive is less than 90%. As can be seen from the above examples, the aliphatic diluent provides better application performance in terms of light transmittance.

[0094] As can be seen from Examples 1-15 and Comparative Example 11, the photocurable adhesive in Examples 1-15, after curing, exhibits good flexibility and high viscosity, allowing the bird-view pattern layer to adhere well to the substrate film, resulting in good adhesion between the bird-view pattern layer and the substrate film, i.e., high bonding strength. In contrast, the introduction of low molecular weight epoxy resin in Comparative Example 10 makes the bird-view pattern layer brittle and reduces adhesion, resulting in lower bonding strength between the bird-view pattern layer and the substrate film. In other words, if the epoxy resin added to the photocurable adhesive is low molecular weight epoxy resin, the viscosity of the adhesive is lower, and the adhesion between the bird-view pattern layer and the substrate film is reduced; due to poor toughness, the cured bird-view pattern layer becomes brittle.

[0095] It should be noted that, in multiple thermal cycling tests (i.e., 100 cycles at -50℃ to 65℃, with pattern deformation observed using a 3D profilometer), it was found that the bird-view pattern layer in the above embodiment did not peel off or detach from the substrate film after 100 cycles. Conversely, in the traditional method of directly molding the bird-view pattern layer on glass, multiple thermal cycling tests were also conducted, and shrinkage peeling or detachment of the bird-view pattern layer from the glass occurred after 60 cycles.

[0096] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A photocurable adhesive based on photoluminescence and bird recognition, characterized in that, The photocurable adhesive, used for coating and curing onto a substrate film, comprises the following components in parts by weight: Epoxy resin: 30-80 parts; Diluent: 20-30 parts; Fluorescent material: 1-2 parts; Photoinitiator: 0.1-3 parts; Antioxidant: 1-3 parts; Adhesion promoter: 0.5-2 parts; Leveling agent: 0.05-0.2 parts; The photocurable adhesive is cured on the substrate film to obtain a bird's-eye view pattern layer, and the glass interlayer with the bird's-eye view pattern layer is used to be sandwiched in the glass. The emission wavelength of the bird-view pattern layer is 300 nm - 600 nm; The light transmittance of the glass interlayer is greater than or equal to 90%; The thickness of the bird-view pattern layer is less than or equal to 100 micrometers, the thickness of the substrate film is less than or equal to 200 micrometers, the coefficient of thermal expansion of the substrate film is 20 ppm / ℃-100 ppm / ℃, and the coefficient of thermal expansion of the bird-view pattern layer is 30 ppm / ℃-120 ppm / ℃.

2. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The epoxy resin is an alicyclic epoxy resin or an epoxy acrylate resin.

3. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The diluent is at least one of the following: isoborneol acrylate, hydroxyethyl methacrylate, isoborneol methacrylate, trimethylolpropane trimethacrylate, isooctyl acrylate, tetrahydrofuran acrylate, 1,2-epoxy-4-vinylcyclohexane, 3,4-epoxycyclohexylmethyl methacrylate, 3,4-epoxycyclohexyl methacrylate, 3-ethyl-3-(methacryloyloxymethyl)oxetane, 3-[(allyloxy)methyl]-3-ethyloxetane, 3-ethyl-3-(acryloyloxymethyl)oxetane, 3-ethyl-3-hydroxymethyloxetane, and 3,3'-(oxybismethylene)bis(3-ethyl)oxetane.

4. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The substrate film is a PET film.

5. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The fluorescent material is at least one of zinc sulfide, zinc silicate, europium oxide, rhodamine, OB, and fluorescein isothiocyanate.

6. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The adhesive strength of the bird-view pattern layer is 3B to 5B; and / or, The viscosity range of the bird-view pattern layer is from 200 cps / 25℃ to 2000 cps / 25℃.

7. The photocurable adhesive based on photoluminescence and bird recognition as described in claim 1, characterized in that, The photoinitiator is at least one selected from TPO, 1173, 184, 369, 651, 784, 819, 907, UVI6992, and PAG-201; and / or, The adhesion promoter is at least one of A-1100, A-187, A-174, A-151, A-171, and A-172.

8. A method for preparing a photocurable adhesive based on photoluminescence and bird recognition, characterized in that, The method for preparing the photocurable adhesive as described in claims 1 to 7 comprises: Epoxy resin, diluent, fluorescent material, and antioxidant are weighed according to the weight proportions and added to the dispersion vessel respectively. The dispersion vessel is heated to a first preset temperature, and the dispersion vessel is stirred and dispersed at a first preset dispersion speed and a first preset stirring speed for a first preset time until there are no obvious insoluble particles in the liquid. Control the dispersion vessel to cool down to the second preset temperature; The photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully disperse the photoinitiator at a second preset dispersion speed and a second preset stirring speed for a second preset time until the photoinitiator is completely dissolved in the liquid. Add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid. The homogeneous liquid was filtered to obtain a light-curing adhesive solution; The light-curing adhesive is dispensed and stored away from light.

9. A glass curtain wall, characterized in that, It includes a substrate film and a bird view pattern layer, wherein the bird view pattern layer is obtained by coating the substrate film with the photocurable adhesive according to any one of claims 1 to 7 and then curing it.

10. A method for manufacturing a glass curtain wall, characterized in that, For manufacturing the glass curtain wall as described in claim 9; the manufacturing method includes: Epoxy resin, diluent, fluorescent material, and antioxidant are weighed according to the weight proportions and added to the dispersion vessel respectively. The dispersion vessel is heated to a first preset temperature, and the dispersion vessel is stirred and dispersed at a first preset dispersion speed and a first preset stirring speed for a first preset time until there are no obvious insoluble particles in the liquid. Control the dispersion vessel to cool down to the second preset temperature; The photoinitiator is added to the dispersion vessel, and the dispersion vessel is controlled to fully disperse the photoinitiator at a second preset dispersion speed and a second preset stirring speed for a second preset time until the photoinitiator is completely dissolved in the liquid. Add the adhesion promoter and leveling agent into the dispersion vessel, and control the dispersion vessel to fully stir and disperse for a second preset time at a second preset dispersion speed and a second preset stirring speed until the entire component becomes a homogeneous liquid. The homogeneous liquid was filtered to obtain a light-curing adhesive solution; The photocurable adhesive is coated or screen-printed onto the substrate film, and the photocurable adhesive on the substrate film is photocured to obtain a bird's-eye pattern layer.

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