Color ink for glass and preparation method thereof

Abstract

The invention relates to color ink for glass and a preparation method thereof, and belongs to the technical field of ink. The color ink for glass comprises the following components in percentage by mass: 20-40% of light-cured resin, 5-20% of light-cured resin containing functional groups, 1-30% of pigment, 1-10% of a photoinitiator, 0.5-5% of a thermal initiator, 1-5% of an assistant crosslinker, 10-40% of a diluent and 1-10% of an assistant, the functional group in the light-cured resin containing the functional group is selected from one or more of hydroxyl, carboxyl, amino, epoxy group and isocyanate group. Through a system of the light-cured resin and the light-cured resin containing the functional groups and a light and heat dual-curing mode, the energy consumption is relatively low, no volatile matter is generated, the volume shrinkage of a pure UV resin formula can be reduced, the functional groups in the light-cured resin containing the functional groups can be combined with silicon hydroxyl on glass to form intermolecular hydrogen bonds and chemical bonds, and the light-cured resin containing the functional groups and the silicon hydroxyl on the glass can be combined with the glass. And the adhesive force is further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ink, and particularly relates to a color ink for glass and a preparation method thereof. BACKGROUND

[0002] As a renewable and clean energy, solar energy has been widely used in recent years with the rapid development of photovoltaic technology and the rapid decline of photovoltaic power generation cost. Among them, the photovoltaic building integration has become one of the important fields of photovoltaic application. Building integrated photovoltaics (BIPV) not only can be used as a power generation component, but also has the dual function of enclosure and decorative building material, which has attracted special attention worldwide. Color photovoltaic building integration is more helpful to realize the integration of photovoltaic components and colorful building environment, which meets the future development trend of building industry of assembly type and green low carbon, and has broad prospects for promotion. With the progress of emerging photovoltaic materials and the innovative design of photovoltaic devices and components, the customization design of color and transparency of solar photovoltaics has attracted much attention, and the future development prospect of aesthetic BIPV products is good. In the process of realizing color photovoltaic building integration, color glass ink plays a key role.

[0003] At present, most of the commercial color crystalline silicon photovoltaic products obtain color front plate glass through printing coating, glass coating and other means to realize the required color, so the color glass ink plays a key role in the production of color crystalline silicon photovoltaic products. However, the existing color glass ink still has the following problems: Firstly, the problem of aesthetics: the existing photovoltaic components made of transparent glass have obvious aesthetic defects, and the battery pieces can be seen during use. Especially in distributed and BIPV application scenarios, with the increasing demand of customers for the aesthetics of buildings, this defect is more and more prominent, which seriously affects the application effect and market acceptance of photovoltaic components in these scenarios.

[0004] Secondly, the problem of high-temperature tempering technology: the ink with glass powder as the binder in the existing color glass ink technology scheme has many drawbacks. In the production process, this kind of ink needs to be tempered at high temperature, which not only consumes a lot of energy, greatly increases the production cost and energy consumption, but also can only be limited to high-temperature resistant inorganic pigments in the selection of pigments, and the selectivity of pigments is very small, which limits the color types of products. At the same time, this kind of ink also has the problem of poor light transmittance, which has a negative impact on the power generation efficiency of photovoltaic components and cannot meet the demand of high-efficiency power generation.

[0005] Third, the problem of organic solvent pollution: the technical scheme of the ink with organic resin as the binder also has serious shortcomings. Most of the inks of this type contain organic solvents, which are easy to volatilize during production, use and storage, causing great pollution to the environment. In addition, due to the presence of organic solvents, higher requirements are placed on the production site, and a special solvent recovery device needs to be provided, which undoubtedly increases the initial investment cost and operation management difficulty of the enterprise, limiting the wide application of this technical scheme.

[0006] Fourth, the performance problem of UV resin ink: the ink with UV resin as the binder also exposes some performance problems in actual application. First, most UV inks have poor adhesion, and are not firmly attached to the surface of glass, which is easy to cause peeling, peeling and other phenomena, affecting the service life and stability of the product. Second, the residual unsaturated double bonds in the UV ink are easy to be oxidized and broken under the action of environmental factors such as light and temperature, resulting in yellowing of the ink, poor weather resistance, and unable to meet the long-term weather resistance requirements of photovoltaic modules, and difficult to adapt to complex outdoor environments.

[0007] In summary, the existing color glass ink technology has problems in terms of aesthetics, production process, environmental protection and product performance, etc. to varying degrees, which seriously restricts the development of color photovoltaic building integration and the wide application of photovoltaic modules in distributed and BIPV scenarios.

[0008] Therefore, it is urgent to develop a color glass ink with low energy consumption, environmental protection, no pollution, strong adhesion, good weather resistance, high light transmittance and wide selection range of pigments. SUMMARY

[0009] To solve the above technical problems, the present application provides a color glass ink and a preparation method thereof. The color glass ink adopts a solvent-free formula and realizes film formation through a UV + low-temperature thermal curing process, not only avoiding environmental impact from solvent volatilization at the source, but also greatly reducing energy consumption during the curing process. The color glass ink has excellent adhesion to glass substrates and can tightly adhere to the surface without easy peeling. It also has excellent weather resistance and can resist aging and discoloration caused by changes in the external environment, maintaining stable performance for a long time. In addition, the color glass ink has excellent compatibility and can be flexibly matched with most organic pigments, inorganic pigments and pearl pigments, meeting different color requirements and achieving rich functional effects.

[0010] The first object of the present application is to provide a color glass ink, which comprises, by mass fraction: photocurable resin 20%-40%; functional group-containing photocurable resin 5%-20%; pigment 1%-30%; Photoinitiator 1-10%; Thermal initiator 0.5-5%; Co-crosslinking agent 1-5%; Diluent 10-40%; Auxiliary agent 1-10%; The functional group in the functional group-containing photocuring resin is selected from one or more of a hydroxyl group, a carboxyl group, an amino group, an epoxy group, and an isocyanate group.

[0011] In an embodiment of the present application, the photocuring resin is selected from one or more of an acrylic resin, a urethane-modified acrylic resin, a silicone-modified acrylic resin, a polyester-modified acrylic resin, a fluorine-modified acrylic resin, an epoxy-modified acrylic resin, an unsaturated polyester resin, and a vinyl resin.

[0012] In an embodiment of the present application, the pigment is selected from one or more of an inorganic metal oxide, an azo-based pigment, a phthalocyanine-based pigment, an anthraquinone-based pigment, a quinacridone-based pigment, an isoindolinone-based pigment, a perylene-based pigment, a benzimidazolone-based pigment, a metal complex-based pigment, and a pearlescent pigment.

[0013] In an embodiment of the present application, the photoinitiator is selected from one or more of a photoinitiator BP, a photoinitiator 1173, a photoinitiator 184, a photoinitiator 127, a photoinitiator 819, and a photoinitiator TPO.

[0014] In an embodiment of the present application, the thermal initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptyl nitrile, dibenzoyl peroxide, t-butyl peroxybenzoate, and di-t-butyl peroxide.

[0015] In an embodiment of the present application, the co-crosslinking agent is selected from one or more of an isocyanate-based crosslinking agent, an imidazole-based crosslinking agent, a hydrazide-based crosslinking agent, an amine-based crosslinking agent, and a dicyandiamide-based crosslinking agent.

[0016] In an embodiment of the present application, the diluent is selected from one or more of hydroxyethyl acrylate, butyl acrylate, isooctyl acrylate, isohexyl acrylate, hydroxyethyl methacrylate, phenethyl oxy acrylate, isobornyl acrylate, dimethylaminoethyl acrylate, tridecyl acrylate, octadecyl acrylate, vinyl pyrrolidone, hexanediol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol pentaacrylate, di-pentaerythritol hexaacrylate, and a vinyl ether-based monomer.

[0017] In one embodiment of the present invention, the additive is selected from one or more of silane coupling agents, antioxidants, leveling agents, wetting and dispersing agents, defoamers, and anti-sagging agents.

[0018] In one embodiment of the present invention, the silane coupling agent is selected from one or more of aminosilanes, vinylsilanes, epoxysilanes, methacryloxysilanes, and thiosilanes; The antioxidant is selected from one or more of hindered phenolic antioxidants, aromatic amine antioxidants, and phosphite antioxidants; The leveling agent is selected from one or more of silicone leveling agents, fluorocarbon leveling agents, acrylic leveling agents, and polyester leveling agents; The wetting and dispersing agent is selected from one or more of anionic wetting and dispersing agents, cationic wetting and dispersing agents, nonionic wetting and dispersing agents, amphoteric wetting and dispersing agents, and polymeric dispersing agents; The defoamer is selected from one or more of silicone defoamers, polyether-modified silicone defoamers, and polyether defoamers; The anti-sagging agent is selected from one or more of organic polymer anti-sagging agents, silicate anti-sagging agents, and polyamide wax anti-sagging agents.

[0019] The second objective of this invention is to provide a method for preparing the aforementioned colored ink for glass, comprising the following steps: stirring and grinding a photocurable resin, a functionalized photocurable resin, a pigment, a photoinitiator, a thermal initiator, a crosslinking agent, a diluent, and an additive until uniform, thereby obtaining the aforementioned colored ink for glass.

[0020] In one embodiment of the present invention, the stirring speed is 900 rpm-1100 rpm, for example, it can be 900 rpm, 910 rpm, 920 rpm, 930 rpm, 940 rpm, 950 rpm, 960 rpm, 970 rpm, 980 rpm, 990 rpm, 1000 rpm, 1010 rpm, 1020 rpm, 1030 rpm, 1040 rpm, 1050 rpm, 1060 rpm, 1070 rpm, 1080 rpm, 1090 rpm, 1100 rpm, etc.; the stirring time is 1 h-2 h, for example, it can be 1 h, 1.1 h, 1.2 h, 1.3 h, 1.4 h, 1.5 h, 1.6 h, 1.7 h, 1.8 h, 1.9 h, 2 h, etc.

[0021] The technical solution of the present invention has the following advantages compared with the prior art: The colored ink of this invention uses a formulation system composed of a photocurable resin, a photocurable resin containing functional groups, and a diluent. Combined with a dual curing method of light and heat, it not only has low energy consumption and no volatiles generated during the curing process, but also effectively reduces the volume shrinkage of pure UV resin formulations. The polar functional groups attached to the photocurable resin containing functional groups can combine with the silanol groups on the glass to form intermolecular hydrogen bonds and chemical bonds, thereby improving the adhesion to the glass. At the same time, the curing conditions are mild, and compared with traditional high-temperature sintered glass inks, a wider range of pigments can be selected, enabling richer colors.

[0022] The colored ink described in this invention is mainly used to adjust the transparency and color of solar cell module glass, helping to optimize the visual appearance of BIPV products manufactured in industry. It combines the advantages of UV inks—solvent-free, environmentally friendly, and fast-curing—with the addition of a thermal curing method, significantly improving adhesion to glass while consuming residual unsaturated double bonds, further enhancing weather resistance. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments, so that those skilled in the art can better understand and implement the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. It should be understood that the specific embodiments are only used to explain the present invention, but the embodiments are not intended to limit the present invention.

[0024] In this invention, unless otherwise stated, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] In this invention, unless otherwise stated, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] In this invention, unless otherwise specified, the experimental methods used in the embodiments of this invention are conventional methods, and the materials and reagents used are commercially available unless otherwise specified.

[0027] In this invention, unless otherwise stated, the polyurethane-modified acrylic resin used in the embodiments of this invention was purchased from Changxing Materials Co., Ltd., and the model number is 6113.

[0028] In this invention, unless otherwise stated, the epoxy-modified acrylic resin used in the embodiments of this invention was purchased from Guangdong Haohui New Materials Co., Ltd., and the model number is CR91192.

[0029] In this invention, unless otherwise stated, the hydroxyl-containing photocurable resin used in the embodiments of this invention was purchased from Changxing Materials Co., Ltd., and the model number is U110.

[0030] In this invention, unless otherwise stated, the epoxy-containing photocurable resin used in the embodiments of this invention was purchased from Guangdong Boxin New Material Technology Co., Ltd., model B-431. Example 1

[0031] The colored ink for glass in this embodiment, by mass fraction, includes: Polyurethane-modified acrylic resin 30%; 20% hydroxyl-containing light-curing resin; Phthalocyanine blue pigment 5%; Photoinitiator 184 5%; Thermal initiator: 1% benzoyl peroxide; Crosslinking agent isocyanate 3%; Diluent: 30% isoborneol acrylate; Silane coupling agent KH-560 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%; The preparation of the above-mentioned colored inks for glass specifically includes the following steps: S1. Mix polyurethane modified acrylic resin, hydroxyl-containing photocurable resin, pigment phthalocyanine blue, photoinitiator 184, diluent isoborneol acrylate and wetting and dispersing agent AFCONA 4720 evenly, and disperse and grind at a speed of 1000 rpm 3 times until the fineness is less than 5 μm to obtain a grinding slurry. S2. Add silane coupling agent KH-560, leveling agent EFKA3777, thermal initiator benzoyl peroxide and crosslinking agent isocyanate to the grinding slurry, grind and disperse at 1000 rpm for 1.5 h, and filter to obtain colored ink for glass. Example 2

[0032] Basically the same as Example 1, except for the composition and amount of the colored ink for glass, specifically including: Polyurethane-modified acrylic resin 40%; 10% of the photocurable resin contains epoxy groups; Phthalocyanine blue pigment 5%; Photoinitiator 184 2%; Thermal initiator: benzoyl peroxide 3%; Thermal initiator: 1% azobisisobutyronitrile; cross-linking agent imidazole 1%; Diluent: 18% isoborneol acrylate; Diluent: 14% trimethylolpropane triacrylate; Silane coupling agent KH-570 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%; The preparation of the above-mentioned colored inks for glass specifically includes the following steps: S1. Mix polyurethane modified acrylic resin, epoxy-containing photocurable resin, pigment phthalocyanine blue, photoinitiator 184, thermal initiator benzoyl peroxide, diluent isobornyl acrylate, diluent trimethylolpropane triacrylate and wetting and dispersing agent AFCONA 4720 evenly, disperse and grind at 1000 rpm 3 times until the fineness is less than 5μm to obtain grinding slurry; S2. Add silane coupling agent KH-570, leveling agent EFKA3777, thermal initiator azobisisobutyronitrile and crosslinking agent imidazole to the grinding slurry, grind and disperse at 1000 rpm for 1.5 h, and filter to obtain colored ink for glass. Example 3

[0033] Basically the same as Example 1, except for the composition and amount of the colored ink for glass, specifically including: Epoxy-modified acrylate 35%; 20% epoxy-containing photocurable resin; Quinacridone Red 122 5%; Photoinitiator 184 2%; Thermal initiator: benzoyl peroxide 3%; Thermal initiator: 1% azobisisobutyronitrile; cross-linking agent imidazole 1%; Diluent: 15% hydroxyethyl acrylate; Diluent: 12% dipropylene glycol diacrylate; Silane coupling agent KH-570 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%; The preparation of the above-mentioned colored inks for glass specifically includes the following steps: S1. Mix epoxy-modified acrylate, epoxy-containing photocurable resin, quinacridone red 122, photoinitiator 184, thermal initiator benzoyl peroxide, diluent hydroxyethyl acrylate, diluent dipropylene glycol diacrylate and wetting and dispersing agent AFCONA 4720 evenly, disperse and grind at 1000 rpm 3 times until the fineness is less than 5 μm to obtain a grinding slurry; S2. Add silane coupling agent KH-570, leveling agent EFKA3777, thermal initiator azobisisobutyronitrile and crosslinking agent imidazole to the grinding slurry, grind and disperse at 1000 rpm for 1.5 h, and filter to obtain colored ink for glass. Comparative Example 1

[0034] Basically the same as Example 1, except for the composition and amount of the colored ink for glass, specifically including: 10% polyurethane-modified acrylic resin; 20% hydroxyl-containing light-curing resin; Phthalocyanine blue pigment 5%; Photoinitiator 184 5%; Thermal initiator: 1% benzoyl peroxide; Crosslinking agent isocyanate 3%; Diluent: 50% isoborneol acrylate; Silane coupling agent KH-560 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%. Comparative Example 2

[0035] Basically the same as Example 1, except for the composition and amount of the colored ink for glass, specifically including: Polyurethane-modified acrylic resin 52%; Phthalocyanine blue pigment 5%; Photoinitiator 184 5%; Thermal initiator: 1% benzoyl peroxide; Crosslinking agent isocyanate 1%; Diluent: 30% isoborneol acrylate; Silane coupling agent KH-560 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%. Comparative Example 3

[0036] Basically the same as Example 1, except for the composition and amount of the colored ink for glass, specifically including: Polyurethane-modified acrylic resin 32%; Phthalocyanine blue pigment 5%; Photoinitiator 184 5%; Thermal initiator: 1% benzoyl peroxide; Crosslinking agent isocyanate 1%; Diluent: 50% isoborneol acrylate; Silane coupling agent KH-560 3%; Leveling agent EFKA3777 1%; Wetting and dispersing agent AFCONA-4720 2%. Test Example 1

[0037] The colored inks of Examples 1-3 and Comparative Examples 1-3 were screen printed onto the glass surface to a thickness of 3 μm. The surface was first baked in an oven at 120°C for 5 minutes, and then irradiated with a high-pressure mercury lamp at 1000 mJ / cm². 2 This will produce colored glass.

[0038] Adhesion and other properties were tested on colored glass prepared with different colored inks. (1) Adhesion to glass (initial): Refer to the test method for coating adhesion in section 6.8 of GB / T 31034-2014 Insulating backsheet for crystalline silicon solar cell modules, and test the adhesion between the coating and the glass using the cross-cut adhesion test on colored glass; (2) Adhesion to glass (double 85 aging): Refer to the test method of coating adhesion in section 6.8 and the test method of constant humidity and heat treatment in section 6.19 of GB / T 31034-2014 Insulating backsheet for crystalline silicon solar cell modules. First, the colored glass is aged under double 85 conditions for 1000h, and then the adhesion between the coating and the glass is tested by the cross-cut adhesion test. (3) Adhesion to EVA (initial): Refer to the test method of adhesion between backsheet coating and EVA coating in section 6.9 of GB / T 31034-2014 Insulating backsheet for crystalline silicon solar cell modules. The colored glass was hot-pressed in a stacking manner of glass / EVA / EVA / solar cell backsheet, and then the interlayer peel force between EVA and glass was tested. (4) Adhesion to EVA (Double 85 aging): Refer to the test method of coating adhesion in section 6.8 and the test method of constant humidity and heat treatment in section 6.19 of GB / T 31034-2014 Insulating backsheet for crystalline silicon solar cell modules. First, the colored glass is hot-pressed in the form of glass / EVA / EVA / solar cell backsheet. Then, it is aged for 1000 hours under double 85 conditions. Finally, the interlayer peel force between EVA and glass is tested. Table 1 shows the relevant parameters of the material that were finally measured: Table 1

[0039] As shown in Table 1, the colored inks of Examples 1-3 exhibited excellent adhesion to glass under both initial and double 85 aging conditions (initial grade 0, with a maximum grade of only 1 after aging), and strong adhesion to EVA (initial grade above 91 N / cm, with a minimum grade above 81 N / cm after aging), demonstrating stable and reliable overall performance. This is because the examples used a combination of photocurable resin and functionalized photocurable resin as the film-forming material, employing a dual curing method of photocuring and thermal curing. This not only enhances adhesion by forming hydrogen bonds and chemical bonds with the silanol groups on the glass surface through functional groups, but also reduces the system's volume shrinkage rate. Simultaneously, it consumes residual unsaturated double bonds to enhance weather resistance. Furthermore, the compatibility with the EVA encapsulation film is optimized through a reasonable ratio of diluents and additives, thereby achieving excellent adhesion and aging stability.

[0040] Comparing Example 1 and Comparative Example 1, it can be seen that the initial adhesion to glass in Comparative Example 1 dropped to level 1, and further decreased to level 1-2 after aging with double 85. The adhesion to EVA after aging was only 15 N / cm, indicating a significant performance degradation. This is because the proportion of photocurable resin in Comparative Example 1 was only 10% (lower than 30% in Example 1), while the proportion of diluent was as high as 50% (far higher than 30% in Example 1). Excessive diluent resulted in insufficient proportion of effective film-forming components in the system, leading to poor film density and reduced water resistance after curing. This not only weakened the adhesion to the glass surface but also seriously affected the long-term adhesion to EVA, resulting in significant performance deterioration after aging.

[0041] Comparing Example 1 and Comparative Example 2, it can be seen that the initial adhesion to glass in Comparative Example 2 was level 2, which decreased to level 2-3 after double 85 aging. The initial adhesion to EVA was only 82 N / cm, which dropped to 28 N / cm after aging, and the overall performance was significantly worse than that of Example 1. This is because Comparative Example 2 did not add a photocurable resin containing functional groups, but only used polyurethane modified acrylic resin as the film-forming material. It lacked polar functional groups that could combine with the silanol groups of glass, resulting in inherently weak adhesion between the film layer and the glass and poor water resistance. At the same time, without functional groups participating in the crosslinking reaction, the film layer structure was not stable enough after curing, and the adhesion to EVA decreased significantly after double 85 aging.

[0042] Comparing Example 1 and Comparative Example 3, it can be seen that the initial adhesion to glass in Comparative Example 3 was level 2, which dropped to level 3-4 after aging with double 85. The initial adhesion to EVA was only 67 N / cm, and after aging, it was only 5 N / cm, showing the worst performance. This is because Comparative Example 3 neither added a photocurable resin containing functional groups nor used too much diluent (accounting for 50%). This double defect resulted in extremely poor film quality: on the one hand, it lacked polar functional groups to bond with the glass, and on the other hand, the excessive diluent damaged the film's density, significantly reducing water resistance and adhesion. After aging, the film structure was easily degraded, and the adhesion to EVA was almost completely lost.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A colored ink for glass, characterized in that, In terms of quality fraction, it includes: UV-curable resin 20%-40%; Photocurable resins containing functional groups: 5%-20%; Pigment 1%-30%; Photoinitiator 1%-10%; Thermal initiator 0.5%-5%; Crosslinking agent 1%-5%; Diluent 10%-40%; Additives 1%-10%; The functional groups in the photocurable resin containing functional groups are selected from one or more of hydroxyl, carboxyl, amino, epoxy, and isocyanate groups.

2. The colored ink for glass according to claim 1, characterized in that, The photocurable resin is selected from one or more of acrylic resin, polyurethane modified acrylic resin, silicone modified acrylic resin, polyester modified acrylic resin, fluorine modified acrylic resin, epoxy modified acrylic resin, unsaturated polyester resin, and vinyl resin.

3. The colored ink for glass according to claim 1, characterized in that, The pigment is selected from one or more of the following: inorganic metal oxides, azo pigments, phthalocyanine pigments, anthraquinone pigments, quinacridone pigments, isoindolineone pigments, perylene pigments, benzimidazolone pigments, metal complex pigments, and pearlescent pigments.

4. The colored ink for glass according to claim 1, characterized in that, The photoinitiator is selected from one or more of photoinitiator BP, photoinitiator 1173, photoinitiator 184, photoinitiator 127, photoinitiator 819 and photoinitiator TPO.

5. The colored ink for glass according to claim 1, characterized in that, The thermal initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptanenitrile, benzoyl peroxide, tert-butyl peroxide, and di-tert-butyl peroxide.

6. The colored ink for glass according to claim 1, characterized in that, The crosslinking agent is selected from one or more of isocyanate crosslinking agents, imidazole crosslinking agents, hydrazide crosslinking agents, amine crosslinking agents, and melamine crosslinking agents.

7. The colored ink for glass according to claim 1, characterized in that, The diluent is selected from one or more of the following monomers: hydroxyethyl acrylate, butyl acrylate, isooctyl acrylate, isodecyl acrylate, hydroxyethyl methacrylate, phenethyl acrylate, isobornyl acrylate, dimethylaminoethyl acrylate, tridecyl acrylate, octadecyl acrylate, vinylpyrrolidone, hexanediol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, pentapentaerythritol pentaacrylate, pentapentaerythritol hexaacrylate, and vinyl ether monomers.

8. The colored ink for glass according to claim 1, characterized in that, The additives are selected from one or more of the following: silane coupling agents, antioxidants, leveling agents, wetting and dispersing agents, defoamers, and anti-sagging agents.

9. The colored ink for glass according to claim 8, characterized in that, The silane coupling agent is selected from one or more of aminosilanes, vinylsilanes, epoxysilanes, methacryloxysilanes, and thiosilanes; The antioxidant is selected from one or more of hindered phenolic antioxidants, aromatic amine antioxidants, and phosphite antioxidants; The leveling agent is selected from one or more of silicone leveling agents, fluorocarbon leveling agents, acrylic leveling agents, and polyester leveling agents; The wetting and dispersing agent is selected from one or more of anionic wetting and dispersing agents, cationic wetting and dispersing agents, nonionic wetting and dispersing agents, amphoteric wetting and dispersing agents, and polymeric dispersing agents; The defoamer is selected from one or more of silicone defoamers, polyether-modified silicone defoamers, and polyether defoamers; The anti-sagging agent is selected from one or more of organic polymer anti-sagging agents, silicate anti-sagging agents, and polyamide wax anti-sagging agents.

10. The method for preparing colored ink for glass according to any one of claims 1-9, characterized in that, The process includes the following steps: stirring and grinding a photocurable resin, a functionalized photocurable resin, a pigment, a photoinitiator, a thermal initiator, a crosslinking agent, a diluent, and an additive until homogeneous, to obtain the colored ink for glass.

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