CN110606668B - A kind of production method of double-curing type color changing solar glass panel - Google Patents

Abstract

The invention discloses a production method of a dual-curing type scene-following color-changing solar glass panel, which comprises the following steps: the scene-following color-changing printing ink is coated on a solar glass panel, low-temperature preheating is carried out firstly, ultraviolet light irradiation is carried out for photocuring, and finally IR infrared heating is adopted for postcuring to obtain the scene-following color-changing solar glass panel, wherein the scene-following color-changing printing ink comprises, by weight, 7-30 parts of photosensitive polymer, 8-20 parts of optical activity monomer, 1-5 parts of photosensitizer, 30-55 parts of weather-resistant resin, 1-10 parts of curing agent, 1-15 parts of pearlescent pigment, 0-3 parts of adhesion promoter, 0-3 parts of ultraviolet light absorber and 0-1 part of defoaming agent. The prepared scene-following color-changing glass panel has good adhesive force between the coating and the solar glass panel, and the coating has qualified moisture and heat resistance, salt mist resistance and weather resistance.

Description

A kind of production method of double-curing type color changing solar glass panel

technical field

The invention relates to the technical field of surface decoration of solar panels, in particular to a production method of a dual-curing type color changing solar glass panel.

Background technique

Solar photovoltaic cells are a new type of power generation system that uses the photovoltaic effect of materials to directly convert solar radiation energy into electrical energy, including several types of silicon solar photovoltaic cells, thin-film solar photovoltaic cells and perovskite solar photovoltaic cells.

Silicon crystalline solar photovoltaic cells dominate the market, while thin-film solar photovoltaic cells and perovskite solar photovoltaic cells have just entered the commercialization stage.

The traditional structure of silicon solar photovoltaic cells is composed of tempered glass, EVA film, monocrystalline silicon or polycrystalline silicon solar cells with high conversion efficiency, EVA film and back plate from the outside to the inside, and is fixed by an aluminum alloy frame. Since monocrystalline or polycrystalline silicon solar cells are dark blue or black, silicon crystalline solar photovoltaic cells are also dark.

Silicon solar photovoltaic cells can be divided into two types: centralized and distributed. Among them, the centralized solar photovoltaic power station directly transmits the generated energy to the power grid, and the power grid is uniformly deployed to supply power to the users, which has the characteristics of large investment, long construction period and large area; distributed solar photovoltaic cells are located near the user site. In construction and operation, advocating the principle of "generating electricity nearby, connecting to the grid nearby, converting nearby, and using nearby", it can not only effectively increase the power generation of photovoltaic power stations of the same scale, but also effectively solve the problem of power loss in boosting and long-distance transportation. .

Distributed silicon solar photovoltaic cells are mainly installed on the roofs and glass curtain walls of residences, factories, and commercial buildings, and are mainly distributed in urban areas and suburbs. At present, the appearance of such dark blue or black silicon solar photovoltaic cells is extremely incompatible with the surrounding environment. , only the power generation function can not meet people's aesthetic needs for the environment, and even cause urban light pollution, which limits the market promotion of distributed silicon solar roofs and curtain walls.

As part of the outdoor environment of the building, solar roof or curtain wall glass must meet the dual needs of power generation function and artistic decoration. Photovoltaic modules are moving towards high power, low cost and artistic, and become part of the beautiful environment. Decorative solar roofs and curtain walls have become an inevitable trend in the development of the photovoltaic industry.

The preparation method of the decorative solar roof and the curtain wall is to coat a layer on the blue-black silicon crystal substrate, which can show a bright visual art effect, does not reduce the light transmittance, does not affect the photoelectric conversion efficiency, and at the same time satisfies the color on the glass panel. An ink layer that can withstand the harsh demands of long-term outdoor weathering. However, the existing problems are that the resin with good weather resistance has poor adhesion to the substrate, and the coating is easy to fall off the substrate; the resin with good adhesion has poor weather resistance and short pattern retention time.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method for producing a dual-curing type color-changing solar glass panel with simple operation steps and good adhesion between the coating and the solar glass panel in the prepared color-changing solar glass panel. , the coating surface can form a transparent outdoor weather-resistant protective layer.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a production method of a dual-curing type photochromic solar glass panel, comprising the following steps:

Coat the color-changing ink on the solar glass panel;

Preheating at low temperature, heating the solar glass panel coated with color-changing ink. Low-temperature preheating makes the weather-resistant resin with small surface tension in the coating and the curing agent dissolved in the weather-resistant resin migrate or float on the surface of the coating, and at the same time let a small amount of solvent in the coating volatilize cleanly; Photopolymers, photoactive monomers, photosensitizers and pearlescent pigments with excellent fastness "sink" to the glass surface;

UV light curing, UV light irradiates the solar glass panel that has been preheated at low temperature for light curing. Under the irradiation of ultraviolet light, the substance in the coating undergoes photo-curing reaction such as radiation polymerization or radiation cross-linking, and the coating is cured and dried to form an adhesive layer, which cleverly solves the problem of poor adhesion of weather-resistant resin to glass;

Heating and curing, heating the solar glass panel after UV light curing, and post-curing, so that the active groups of the weather-resistant resin in the coating and the curing agent undergo cross-linking reaction to form a fluorocarbon surface protective layer with ultra-long weather resistance. Good protection for pearlescent pigments in color images. At the same time, it can effectively improve the adhesion fastness, water resistance, humidity and heat resistance of the UV-curable coating to glass, and finally obtain a solar glass panel that changes with the scene.

The components of the color-changing ink and its weight parts include 7-30 parts of photosensitive polymer, 8-20 parts of photoactive monomer, 1-5 parts of photosensitizer, 30-55 parts of weather-resistant resin, 1-10 parts of curing agent, 1 to 15 parts of pearlescent pigments. Pearlescent pigments are composed of several kinds of metal oxide thin layers coated mica. By changing the thickness and type of metal oxides, different pearlescent effects can be produced. At the same time, pearlescent pigments have high refractive index and good transparency to create the same effect as pearl luster in transparent media. Photosensitive polymers, photoactive monomers, photosensitizers and pearlescent pigments undergo photocuring reactions such as radiation polymerization or radiation crosslinking under ultraviolet light irradiation, and the coating is cured and dried to form an adhesive layer with good adhesion to the substrate; weather resistance The heating reaction of the resin and the curing agent generates a transparent fluorocarbon surface protective layer with good weather resistance, high hardness and low shrinkage, good leveling and scratch resistance, which hardly affects the light transmittance. It can also present a bright visual art effect.

When the color changing ink of the present invention is printed on substrates of different colors, the observed pattern colors are different, and the color of the product observed by the human eye will change with the change of the color of the substrate.

The interference pearl pattern printed on the transparent glass or transparent plastic sheet has almost no color and is transparent, which will not affect the light transmission and photoelectric conversion efficiency;

The pattern printed on a white substrate is white, which is the reflection color of the substrate;

Pearlescent patterns printed on dark substrates, the observed surface color is the result of the interference superposition of the multi-layer pearlescent wafers in the coating and the reflected light of the coating, and the color of the substrate cannot be seen, which is all common pigments and metals. Optical properties that pigments do not have.

In addition to being used for the decoration of solar glass products, the color changing ink of the present invention can also be used for surface printing of other glass products, such as home appliance glass panels, mobile phone glass decoration and the like.

The color changing ink of the present invention is suitable for printing various glass substrates, including ultra-white glass, ordinary glass, physical toughened glass, chemically cured glass, ceramic/glass composite materials and the like.

The color changing ink of the present invention can also be printed on the surface of ceramic, metal and transparent plastic substrates.

As a further improvement of the present invention, the temperature of the low-temperature preheating is 50-120° C., and the heating time is 1-20 min. If the temperature is too high, the drying speed of the coating is too fast, and the migration of the weather-resistant resin is insufficient, which affects the outdoor weather resistance of the final product and the adhesion fastness of the coating to the glass. Curing performance; if the temperature is too low, the viscosity of the ink is high, the migration speed is slow, the production efficiency is low, and the solvent in the coating cannot be volatilized cleanly.

As a further improvement of the present invention, the wavelength of ultraviolet light for UV curing is 300-420 nm, and the energy of ultraviolet light irradiation is 150-600 mJ/cm 2 . If the ultraviolet light energy is too small, the coating will not be cured completely, the surface hardness will be low, and the comprehensive properties such as water resistance will be poor; if the light energy is too large, the cured film will become brittle, the coating will turn yellow, and the solar ultra-white glass will be yellowed. Thereby affecting the transmittance and photoelectric conversion efficiency. Different printing thicknesses, different coating colors, and different UV light energy required to cure the coating.

As a further improvement of the present invention, the temperature for curing after heating is 80-200° C., and the heating time is 3-20 min. The higher the heating temperature, the shorter the curing time. If the temperature is too high, the coating will be aged and yellowed. On the contrary, the curing will be insufficient and the overall performance of the coating will be poor.

As a further improvement of the present invention, the temperature of the low-temperature preheating is 60-110° C., and the heating time is 3-8 minutes.

As a further improvement of the present invention, the temperature for curing after heating is 120-180° C., and the heating time is 7-15 minutes.

As a further improvement of the present invention, the production method of the dual-curing photochromic solar glass panel further includes the step of cleaning the glass panel. Before coating the photochromic ink on the solar glass panel, spraying the glass panel for 1- 3% neutral surfactant aqueous solution, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 90-130°C. After cleaning, the adhesion of the color-changing ink on the glass panel will be better.

As a further improvement of the present invention, the coating thickness of the color-changing ink is 15-30 μm. If the above coating thickness is too thick, the weather-resistant resin with low surface tension in the coating cannot reach the surface of the coating, and the resin and pearlescent pigments with high surface tension and excellent adhesion fastness cannot "sink" to the surface of the solar glass panel; If the coating thickness is too thin, the visual effect of the coating is poor.

As a further improvement of the present invention, the coating method includes screen printing, spray coating, roller coating, and flow coating.

As a further improvement of the present invention, the screen printing adopts a polyester screen of 100-350 meshes and a wire diameter of 30-50 microns.

Compared with the prior art, the beneficial effects of the present invention are:

1. Low temperature preheating makes the weather-resistant resin with small surface tension in the coating migrate or float on the surface of the coating to form a fluorocarbon surface protective layer with ultra-long weather resistance, which is very good for pearlescent pigments in color images. At the same time, a small amount of solvent in the coating can be volatilized cleanly, and resins and pearlescent pigments with high surface tension and excellent adhesion fastness "sink" to the surface of the solar glass panel to form an adhesion layer, which cleverly solves the problem of weather-resistant resin. The problem of poor adhesion to solar glass panels;

2. UV light curing and post-heating curing are used successively to double-cur the solar glass panel with color change, which further improves the adhesion of the adhesive layer to the solar glass panel, water resistance, humidity and heat resistance and other properties. And the emissions of volatile organic compounds from the dual-cure process are very low.

Detailed ways

Below in conjunction with embodiment, the present invention is further described in detail:

Example 1:

Spray 2% neutral surfactant aqueous solution on the glass panel, then mechanically brush, rinse with tap water, clean with deionized water, and finally dry with hot air at 100°C;

Screen printing the color-changing ink on the solar glass panel;

Low temperature preheating, using IR infrared to heat the solar glass panel coated with the color changing ink with the scene, the heating temperature is 100 ℃, and the heating time is 12min;

UV light curing, ultraviolet light irradiates the solar glass panel after low temperature preheating, and performs light curing, the wavelength of ultraviolet light is 390nm, and the energy of ultraviolet light irradiation is 350 mJ/square centimeter;

IR post-curing, using IR infrared to heat the UV light-cured solar glass panel, and post-curing, the heating temperature is 130°C, and the heating time is 12min, to obtain a scene-changing solar glass panel;

The components of the color-changing ink and its weight parts include 22 parts of photosensitive polymer, 14 parts of photoactive monomer, 3 parts of photosensitizer, 45 parts of weather-resistant resin, 7 parts of curing agent, and 12 parts of interference pearlescent pigment.

The photosensitive polymer is a hydrophobic polyester urethane acrylate with 2-6 functionalities, specifically RUA-064S-8 from Japan Asia Company; the photoactive monomer is isobornyl acrylate (IBOA); the photosensitizer is 1-hydroxyl Cyclohexyl benzophenone (184); the weather-resistant resin is a fluorocarbon resin, specifically a fluorocarbon resin from Sanaifu Zhonghao Chemical New Materials Co., Ltd. such as: chlorotrifluoroethylene and vinyl ester alternating copolymer JF-3X ( Fluorine content 25±0.5%, hydroxyl value mgKOH/g/solid 50±5, solid content>50%), can be cross-linked at room temperature, or amino or blocked isocyanate can be used as cross-linking agent, high-temperature baking and curing; curing agent is poly Isocyanate, specifically the blocked isocyanate curing agent of Dongguan Jiangxing Industrial Company, such as JX-628 curing agent (solid content 85%, NCO content 12±0.5%, unsealing temperature> 120 ℃), normal temperature curing agent JX-519 ( The solvent component is ethyl acetate, the solid content is 80±2%, and the NCO content is 15±0.5%); the pearlescent pigment is an interference pearlescent pigment, specifically, orange red pearlescent powder 2216 from Hebei Beike New Materials Company.

Example 1-1:

The photopolymer is allnex resin (Shanghai) Co., Ltd. EB4680 urethane acrylate, which can achieve the same effect as Example 1.

Example 1-2:

The photosensitive polymer is acrylated acrylate ACAZ-251, which can achieve the same effect as Example 1.

Examples 1-3:

The photosensitive polymer is acrylated acrylate ACAZ-300, which can achieve the same effect as Example 1.

Examples 1-4:

The photosensitive polymer is polyurethane acrylate FAO7468 from Shanghai Baorun Chemical Co., Ltd., which can achieve the same effect as in Example 1.

Examples 1-5:

The photosensitive polymer is Sartomer's polybutadiene dimethacrylate CN301, which can achieve the same effect as in Example 1.

Examples 1-6:

The photosensitive polymer is Sartomer's polybutadiene dimethacrylate CN303, which can achieve the same effect as in Example 1.

Examples 1-7:

The photosensitive polymer is Dymax hydrophobic polyurethane acrylate BR-643, which can achieve the same effect as in Example 1.

Examples 1-8:

The photosensitive polymer is Dymax hydrophobic polyurethane acrylate BRC-843S, which can achieve the same effect as in Example 1.

Examples 1-9:

The photosensitive polymer is polybutadiene urethane acrylate BR-641D, which can achieve the same effect as Example 1.

Examples 1-10:

The photosensitive polymer is polybutadiene urethane acrylate BR-641E, which can achieve the same effect as Example 1.

Examples 1-12:

The photosensitive polymer is DSM's weather-resistant resin solution G001026, which can achieve the same effect as in Example 1.

Examples 1-13:

The photoactive monomer is isobornyl methacrylate (IBOMA), which can achieve the same effect as Example 1.

Examples 1-14:

The photoactive monomer is ethoxylated tetrahydrofuran acrylate (TH(EO)FA), which can achieve the same effect as Example 1.

Examples 1-15:

The photoactive monomer is 1,6-hexanediol diacrylate (HDDA), which can achieve the same effect as Example 1.

Examples 1-16:

The photoactive monomer is propoxylated neopentyl glycol diacrylate (NPG2PODA), which can achieve the same effect as Example 1.

Examples 1-17:

The photoactive monomer is tris(2-acryloyloxyethyl)isocyanurate (THEIC), which can achieve the same effect as Example 1.

Examples 1-18:

The photosensitizer is 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), which can achieve the same effect as in Example 1.

Examples 1-19:

The photosensitizer is 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO), which can achieve the same effect as in Example 1.

Examples 1-20:

The weather-resistant resin is ZHM-2, an alternating copolymer of chlorotrifluoroethylene and vinyl ether monomers (fluorine content 26±2%, hydroxyl value mgKOH/g/solid 49-55, solid content 60±2%), available polyisocyanate As a curing agent, it can be cross-linked at room temperature or cured by heating, which can achieve the same effect as in Example 1.

Examples 1-21:

The weather-resistant resin is ZHM-70, an alternating copolymer of chlorotrifluoroethylene and vinyl ether monomers (fluorine content 25±1%, hydroxyl value mgKOH/g/solid 49-55, solid content 70±2%), high solid and low Sticky, using polyisocyanate as curing agent, it can be cross-linked at room temperature, and amino or blocked isocyanate can also be used as cross-linking agent, which is suitable for high-temperature baking and curing, and can achieve the same effect as Example 1.

Examples 1-22:

The weather-resistant resin is the tetrafluororesin HLR-2H of Jinan Hualin Chemical Co., Ltd. for coatings. It is made by copolymerizing tetrafluoroethylene monomer and functional monomer. Some monomers with functional groups are introduced into the main chain of the fluororesin to make the copolymerization. The resin can be dissolved in organic solvents or other resins, the hydroxyl value mgKOH/g/solid is 55±2, the solid content is 60±2%, and the fluorine content is more than 26%, which can achieve the effect of Example 1.

Examples 1-23:

The weather-resistant resin is LF-200, an alternating copolymer of fluorocarbon tree fluoride and vinyl ether, which is a solvent-soluble type of Japan's Asahi Glass Coatings. Effect.

Examples 1-24:

The weather-resistant resin is Shanghai Huarong Chemical 818C modified polysiloxane resin (solid content 77±1%, element content 11.7%), which can achieve the same effect as Example 1.

Examples 1-25:

The curing agent is Donaide TPA-100 low-viscosity isocyanate curing agent from Asahi Kasei Company, which can achieve the same effect as in Example 1.

Examples 1-26:

The curing agent is a TPA-B80X blocked diisocyanate curing agent, which can achieve the same effect as in Example 1.

Examples 1-27:

The curing agent is amino resin 325 (solid content of 85%) of Cytec Corporation, which can achieve the same effect as that of Example 1.

Examples 1-28:

The curing agent is an aminosiloxane mixture of Shanghai Huarong Chemical Company, which can achieve the same effect as in Example 1.

Example 2:

A color-changing ink also includes 2% by weight of an adhesion promoter, and the adhesion promoter is phosphate acrylate, specifically 2-hydroxyethyl methacrylate phosphate PM- 2.

Example 2-1:

The adhesion promoter is phosphate acrylate, specifically 9106 monofunctional phosphate acrylate from Guangzhou Runao Chemical Co., Ltd., which can achieve the same effect as Example 2.

Example 2-2:

The adhesion promoter is phosphate acrylate, specifically 9107 difunctional phosphate acrylate from Guangzhou Runao Chemical Company, which can achieve the same effect as Example 2.

Example 2-3:

The adhesion promoter is a methacryloyl silane coupling agent, specifically, a silane coupling agent 6040 from Dow Corning, which can achieve the same effect as in Example 2.

Example 2-4:

The adhesion promoter is an aminosilane coupling agent, specifically a domestic aminosilane coupling agent r-aminopropylmethyldiethoxysilane KH902, which can achieve the same effect as in Example 2.

Examples 2-5:

The adhesion promoter is an epoxy silane coupling agent, specifically an epoxy silane coupling agent r-glycidyl ether oxypropyltrimethylsilane KH-560, which can achieve the same effect as Example 2.

Examples 2-6:

The adhesion promoter is a methacryloyl silane coupling agent, specifically an acryloyl silane coupling agent KH-570r-methacryloyloxypropyltrimethoxysilane, which can achieve the same effect as in Example 2.

Example 3:

The color-changing ink also includes 2% by weight of an ultraviolet light absorbing agent, and the ultraviolet light absorbing agent is any commercially available product, such as Tinuvin 400, an ultraviolet light absorbing agent from BASF.

Example 4:

The color-changing ink also includes 0.5% by weight of a defoaming agent, and the defoaming agent is any commercially available product, such as 201 methyl silicone oil.

Example 5:

Urethane acrylate EB4680 7 servings Isobornyl Acrylate (IBOA) 8 servings 1-Hydroxycyclohexylbenzophenone (184) 1 serving Fluorocarbon resin copolymer ZHM-70 30 servings Blocked isocyanate curing agent JX-628 30 servings German Merck Iriodin 7205 Interference Gold Pearlescent Pigment 1 serving r-Glycidyl ether oxypropyltrimethylsilane KH-560 1 serving UV Absorber 1130 1 serving 201 methyl silicone oil defoamer 0.5 servings

Interfering with polyurethane acrylate EB4680, isobornyl acrylate (IBOA), 1-hydroxycyclohexyl benzophenone (184), fluorocarbon resin copolymer ZHM-70, blocked isocyanate curing agent JX-628, German Merck Iriodin 7205 Gold pearlescent pigment, UV absorber 1130, 201 methyl silicone oil defoamer and r-glycidyl ether oxypropyl trimethyl silane KH-560 are mixed and stirred at high speed to obtain a color-changing ink.

A 1% neutral surfactant aqueous solution was sprayed on the glass panel, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 90°C. A 200-mesh screen plate was used to print the color-changing ink on the solar glass panel with a coating thickness of 15 μm. The solar panel with the color-changing ink was heated by IR infrared rays at a heating temperature of 50 °C and a heating time of 20 min. Then, photocuring is performed by using ultraviolet light with a wavelength of 300-420 nm and an irradiation energy of 150-600 mJ/square centimeter. Finally, the solar glass panel cured by UV light is heated by IR infrared rays, the heating temperature is 80° C., and the heating time is 20 minutes, so as to obtain the solar glass panel that changes with the scene.

Example 6:

Polybutadiene dimethacrylate such as CN301, 1,6-hexanediol diacrylate (HDDA), 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), fluorocarbon Resin copolymer ZHM-70, blocked isocyanate curing agent JX-628, German Merck Iriodin 7225 interference blue pearlescent pigment, UV absorber 1130 and 201 methyl silicone oil defoamer, monofunctional phosphate acrylate (9106) Mix and stir evenly at high speed to obtain color-changing ink.

A 2% neutral surfactant aqueous solution was sprayed on the glass panel, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 100°C. The color-changing ink was applied to the solar glass panel by spraying, and the thickness of the coating was 20 μm. The solar panel sprayed with the color-changing ink was heated by water vapor at a heating temperature of 90 °C and a heating time of 10 minutes. Then, photocuring is performed by using ultraviolet light with a wavelength of 300-420 nm and an irradiation energy of 150-600 mJ/square centimeter. Finally, water vapor heats the UV-cured solar glass panel at a heating temperature of 120° C. and a heating time of 12 minutes to obtain a scene-changing solar glass panel.

Example 7:

Hydrophobic polyurethane acrylate BR-643 30 servings 1,6-Hexanediol diacrylate (HDDA) 20 servings photosensitizer TPO 5 servings Tetrafluororesin HLR-2H 55 servings Blocked isocyanate curing agent JX-628 10 servings Hebei Beike New Material Co., Ltd. orange red pearl powder 2216 15 servings r-Glycidyl ether oxypropyltrimethylsilane KH-560 3 copies

The hydrophobic polyurethane acrylate BR-643, 1,6-hexanediol diacrylate (HDDA), photosensitizer TPO, tetrafluororesin HLR-2H, blocked isocyanate curing agent JX-628, Hebei Beike New Material Co., Ltd. orange red Pearlescent powder 2216, UV absorber 1130, 201 methyl silicone oil defoamer and r-glycidyl ether oxypropyl trimethyl silane KH-560 are mixed and stirred at high speed to obtain a color-changing ink.

A 3% neutral surfactant aqueous solution was sprayed on the glass panel, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 130°C. The color-changing ink was applied to the solar glass panel by roller coating, and the thickness of the coating was 15 μm. The solar panel coated with the color-changing ink was heated by electromagnetic induction at a heating temperature of 120 °C and a heating time of 1 min. Then, photocuring is performed by using ultraviolet light with a wavelength of 300-420 nm and an irradiation energy of 150-600 mJ/square centimeter. Finally, the solar glass panel cured by UV light is heated by electromagnetic induction at a heating temperature of 200° C. and a heating time of 3 minutes to obtain a solar glass panel with a color change with the scene.

Example 8:

The polyurethane acrylate RUA-064S-8, TPGDA, 1-hydroxycyclohexyl benzophenone (184), fluorocarbon resin copolymer ZHM-2, isocyanate curing agent JX-519, Guangzhou Weinuo Pearlescent Pigment Company pearl powder (Chameleon ) VR7503, UV absorber 1130, 201 methyl silicone oil defoamer and accelerator KH-570 are mixed and stirred at high speed to obtain a color-changing ink.

A 2% neutral surfactant aqueous solution was sprayed on the glass panel, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 110°C. The color-changing ink is applied to the solar glass panel by means of curtain coating, and the coating thickness is 20 μm. The solar panel coated with the color-changing ink is heated by IR infrared rays at a heating temperature of 90 °C and a heating time of 10 minutes. Then, photocuring is performed by using ultraviolet light with a wavelength of 300-420 nm and an irradiation energy of 150-600 mJ/square centimeter. Finally, the solar glass panel cured by UV light is heated by IR infrared rays, the heating temperature is 160° C., and the heating time is 10 minutes, so as to obtain a solar glass panel that changes with the scene.

Example 9:

Urethane acrylate FAO7468 15 servings Propoxylated Neopentyl Glycol Diacrylate (NPG2PODA) 10 servings 1-Hydroxycyclohexylbenzophenone (184) 4 parts Fluorocarbon resin copolymer ZHM-2 55 servings Isocyanate curing agent JX-519 7 servings I Germany Merck riodin pearlescent interference green pearlescent pigment 6 servings r-Aminopropylmethyldiethoxysilane KH-902 2 servings UV absorber Tinuvin400 0.5 servings 201 methyl silicone oil defoamer 0.5 servings

Polyurethane acrylate FAO7468, TPGDA, propoxylated neopentyl glycol diacrylate (NPG2PODA), 1-hydroxycyclohexyl benzophenone (184), fluorocarbon resin copolymer ZHM-2, isocyanate curing agent JX-519 , I Germany Merck riodin pearl light interference green pearl pigment, UV absorber Tinuvin 400, 201 methyl silicone oil defoamer and r-aminopropyl methyl diethoxy silane KH-902 are mixed and stirred at high speed evenly, before use Add and mix evenly to obtain a color-changing ink with the scene.

A 2% neutral surfactant aqueous solution was sprayed on the glass panel, then mechanically brushed, rinsed with tap water, washed with deionized water, and finally dried with hot air at 110°C. A 200-mesh screen plate was used to print the color-changing ink on the solar glass panel with a coating thickness of 20 μm. The solar panel with the color-changing ink was heated by IR infrared rays at a heating temperature of 90 °C and a heating time of 10 minutes. Then, photocuring is performed by using ultraviolet light with a wavelength of 300-420 nm and an irradiation energy of 150-600 mJ/square centimeter. Finally, the solar glass panel cured by UV light is heated by IR infrared rays, the heating temperature is 180° C., and the heating time is 5 minutes, so as to obtain the solar glass panel that changes with the scene.

Comparative Example 1: The low-temperature preheating step in Example 5 was removed, and the remaining steps remained unchanged.

Comparative Example 2: The UV light curing step in Example 6 was removed, and the remaining steps remained unchanged.

Comparative Example 3: The post-heating curing step in Example 7 was removed, and the remaining steps remained unchanged.

The adhesion was measured by the paint film adhesion test method (GB 1720-1979).

Moisture and heat resistance was determined by the method for the determination of paint film damp heat resistance (GB/T1740-89).

The salt spray resistance was measured by the salt spray resistance test method of paint film (GB/T 1771-1979).

Weather resistance was measured by the paint film weather resistance test method (GBT 1767-1979).

The light transmittance of the color-changing ink was measured by GBT 2410-2008 Determination method of light transmittance and haze of transparent plastics.

The visual effect of the dark background is judged by the naked eye according to the shape and outline clarity of the presented pattern and the vividness of the color, and the judgment conclusion of good and bad is given.

The test results are as follows:

It can be seen from the above table that in Comparative Example 1, no low-temperature preheating step was performed, and UV light curing and post-heating curing were directly performed. The adhesion was only 70%, and the resistance to humidity and heat, salt spray and weather resistance were all unqualified, indicating the low-temperature preheating step. It has a great influence on the adhesion between the coating and the solar glass panel, the humidity and heat resistance, salt spray resistance and weather resistance of the coating; in Comparative Example 2, no UV light curing was performed, and only the low temperature preheating step and heating were performed. post curing. Due to the absence of ultraviolet light irradiation, the photopolymer, photoactive monomer and photosensitizer in the ink will not undergo photocuring reaction, so the ink layer will not be fully cured. The adhesion between the coating and the solar glass panel is 90%, and the weather resistance is qualified, but the humidity and heat resistance and salt spray resistance are not qualified, indicating that UV light curing has a certain effect on the adhesion, but has almost no effect on the weather resistance. The coating's resistance to heat and humidity and salt spray have a great impact; in Comparative Example 3, no post-heating curing was performed, only a low-temperature preheating step and UV light curing were performed, and the adhesion between the coating and the solar glass panel was 95 %, the weather resistance is qualified, but the humidity and heat resistance and salt spray resistance are unqualified, indicating that the curing after heating has a certain influence on the adhesion, has almost no effect on the weather resistance, and has a great effect on the humidity and heat resistance and salt spray resistance of the coating. Impact. In Examples 5, 6, and 7, the low-temperature preheating step, UV light curing, and post-heating curing were performed in sequence. The humidity and heat resistance, salt spray resistance and weather resistance are all qualified, indicating that the method of the present invention can be widely used in the field of preparing the surface decoration of solar panels.

An embodiment of the present invention has been described in detail above, but the content is only a preferred embodiment of the present invention, and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still belong to the scope of the patent of the present invention.

Claims (7)

1. a kind of production method of dual-curing type discoloration solar glass panel, it is characterized in that comprising the following steps: Coat the color-changing ink on the solar glass panel; Low temperature preheating, heating the solar glass panel coated with the color changing ink; UV light curing, UV light irradiates the solar glass panel that has been preheated at low temperature for light curing; Curing after heating, heating the solar glass panel after UV light curing, and post-curing to obtain a solar glass panel that changes with the scene; The composition and weight portion of the color-changing ink include: 7-30 parts of photopolymer, 8-20 parts of photoactive monomer, 1 to 5 parts of photosensitizer, 30 to 55 parts of weather-resistant resin, 1 to 10 parts of curing agent, 1 to 15 parts of pearlescent pigments, 0 to 3 parts of adhesion promoter, 0 to 3 parts of UV absorber, 0 to 1 part of defoamer; The temperature for curing after heating is 80-200° C., and the heating time is 3-20 min. The temperature of the low-temperature preheating is 60-110° C., and the heating time is 3-8 minutes. 2 . The method for producing a dual-curing type color-changing solar glass panel according to claim 1 , wherein the ultraviolet light wavelength of the UV light curing is 300 to 420 nm, and the energy of the ultraviolet light is 150 to 420 nm. 3 . 600 mJ/cm². 3 . The method for producing a dual-curing photochromic solar glass panel according to claim 1 , wherein the curing temperature after heating is 120-180° C., and the heating time is 7-15 min. 4 . 4 . The method for producing a dual-curing photochromic solar glass panel according to claim 1 , wherein the production method for the dual-curing photochromic solar glass panel further comprises a glass panel. 5 . In the cleaning step, before applying the color-changing ink on the solar glass panel, spray 1-3% neutral surfactant aqueous solution on the glass panel, then mechanically brush, rinse with tap water, and clean with deionized water. ~130℃ hot air drying. 5 . The method for producing a dual-curing photochromic solar glass panel according to claim 1 , wherein the coating thickness of the photochromic ink is 15-30 μm. 6 . 6 . The method for producing a dual-curing photochromic solar glass panel according to claim 1 , wherein the coating method comprises screen printing, spray coating, roller coating, and shower coating. 7 . 7 . The method for producing a dual-curing photochromic solar glass panel according to claim 6 , wherein the screen printing adopts a polyester screen of 100-350 meshes and a wire diameter of 25-50 microns. 8 . .