BIPV (building integrated photovoltaics) outer surface glass with antiskid effect

Abstract

The invention discloses BIPV (building integrated photovoltaics) outer surface glass with an anti-skid effect, which comprises a photovoltaic patterned glass base layer, and the smooth surface of the photovoltaic patterned glass base layer is treated by the following steps: plane texture acid-proof protection: adopting protective ink to print textures, and protecting a reserved texture area. According to the invention, a dual anti-skid structure is constructed through a synergistic process of acid liquor etching and frosting treatment, breakthrough improvement of the anti-skid performance is realized, and meanwhile, coordination and balance of skid resistance and light transmission are realized through a combined scheme of precise control of process parameters and AR anti-reflection treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass, in particular to a BIPV outer surface glass with anti-skid effect. BACKGROUND

[0002] In a photovoltaic BIPV system, roof photovoltaic cover glass is a key component. The existing roof photovoltaic cover glass usually adopts smooth flat glass or conventional photovoltaic textured glass. In the actual installation process, workers need to frequently step on the glass surface for component assembly and fixing operation. However, due to the influence of rain, dew and other factors, the roof environment is easily affected, and the glass surface is easily in a wet state. The smooth glass surface cannot provide enough friction, resulting in a high safety risk of workers slipping and falling from the roof.

[0003] To solve the above anti-skid problem, some users propose the demand for processing deeper textures on the glass surface. However, there is a lack of efficient and stable anti-skid treatment scheme for conventional photovoltaic glass in the prior art. If a physical polishing method is used to process the texture, it is easy to cause a large decrease in the light transmittance of the glass, affecting the power generation efficiency of the photovoltaic module. If a coating type anti-skid scheme is used, the coating is easy to fall off under long-term friction and outdoor environment, and cannot achieve long-lasting anti-skid effect. In addition, the coating material may conflict with the weather resistance and light transmittance requirements of the photovoltaic glass, further limiting its application. Therefore, there is an urgent need for a BIPV outer surface glass treatment technology that can ensure anti-skid performance while taking into account light transmittance and durability. SUMMARY

[0004] In view of the defects of the prior art, the purpose of the present application is to provide a BIPV outer surface glass with anti-skid effect to solve the problems raised in the background art.

[0005] The technical problem solved by the present application adopts the following technical scheme: The present application provides a BIPV outer surface glass with anti-skid effect, comprising a photovoltaic textured glass base layer. The smooth surface of the photovoltaic textured glass base layer is treated by the following steps: Step one, plane texture acid-proof protection: print texture with protective ink to protect the reserved texture area; Step two, back acid-proof protection: adhere an acid-resistant protective film with a viscosity of 150-350 g / cm2 to the back textured surface of the photovoltaic textured glass base layer; Step three, acid etching anti-skid texture: etch the smooth surface treated in step one with hydrofluoric acid with a concentration of 8-20% for 10-150 minutes to form an anti-skid texture with a depth of 10-130 μm; Step four, frosting treatment: the anti-slip textured surface formed in step three is treated with a frosting solution, the solution is uniformly sprayed on the glass surface and soaked for 5-20 minutes, so that the textured surface roughness reaches 0.8-3 μm; Step five, AR anti-reflection treatment: AR coating solution is prepared by sol-gel method, silica sol is prepared with tetraethyl orthosilicate as precursor and ammonia as catalyst, and then stabilizer, viscosity regulator and binder are added and diluted, and the AR coating solution is coated on the anti-slip textured surface by roller coating machine, and then dried and cured, and then treated in a toughening furnace.

[0006] Preferably, the protective ink is composed of 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive; Preferably, the protective ink is composed of 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive; Preferably, the protective ink is composed of 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive;

[0007] Preferably, the protective ink is composed of 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive;

[0008] Preferably, the frosting solution is composed of 20-25 parts of water, 15-20 parts of hydrofluoric acid, 12-15 parts of ammonium hydrogen fluoride, 1-2 parts of potassium fluoborate, 1-2 parts of potassium fluoride and 3-5 parts of modified barium sulfate agent.

[0009] Preferably, the modified barium sulfate agent is prepared by the following method: S11: Stir the silicon carbide in a sufficient amount of 10-15% by mass potassium permanganate solution, then wash with water, filter and dry, and then preheat the dried silicon carbide at 60-65°C for 1h to obtain preheated silicon carbide agent; S21: Mix 3-5 parts of nano-titanium dioxide, 4-6 parts of sodium lignosulfonate solution, 1-2 parts of silane coupling agent KH560 and 2-3 parts of nano-calcium carbonate to obtain a modified solution; S31: Preheat the barium sulfate at 55-65°C for 1h, and then stir the preheated barium sulfate in the modified solution which is 5-8 times the total amount of the preheated barium sulfate to obtain a modified barium sulfate solution; Ball mill the modified barium sulfate solution and the silicon carbide agent in a weight ratio of (7-11):5, filter and dry after ball milling to obtain a modified barium sulfate agent.

[0010] Preferably, the mass fraction of the sodium lignosulfonate solution is 7-10%.

[0011] Preferably, the stirring speed of the stirring modification treatment is 450-500 r / min, and the stirring time is 1 h; the ball milling speed of the ball milling treatment is 1050-1150 r / min, and the ball milling time is 2 h.

[0012] The nano-titanium dioxide has a high specific surface area and can be adsorbed on the surface of barium sulfate particles. The two ends of the silane coupling agent KH560 molecule are respectively reacted with the hydroxyl groups of the nano-titanium dioxide and the hydroxyl groups on the surface of the glass to form chemical covalent bonds. The sodium lignosulfonate optimizes the dispersibility and ensures uniform light transmission. The molecular chain of the sodium lignosulfonate solution as a dispersant can wrap the nano-titanium dioxide and nano-calcium carbonate particles, and the electrostatic repulsion prevents the particles from agglomerating. The nano-calcium carbonate adjusts the sanding rate and precisely controls the roughness. The nano-calcium carbonate can slowly react with hydrofluoric acid in the sanding solution to release fluorine ions at a more gentle rate than directly adding hydrofluoric acid, which improves the controllability of the sanding process. By controlling the addition amount of 2-3 parts, the surface roughness of the glass after sanding can be precisely controlled in the target range of 0.8-3 μm, which ensures the anti-skid effect and avoids excessive sanding that leads to a decrease in light transmittance. The potassium permanganate solution as a strong oxidizing agent can form active groups such as hydroxyl groups (-OH) and carboxyl groups (-COOH) on the surface of silicon carbide, breaking the original inert surface structure of silicon carbide. When combined with barium sulfate, it can form a "silicon carbide-barium sulfate interlocking structure, which can increase the hardness of the sanding layer to significantly enhance the wear resistance of the glass surface, avoid wear of the sanding layer caused by long-term trampling, and prolong the service life of the anti-skid effect.

[0013] Preferably, the specific process of the AR anti-reflection treatment is as follows: S101, preparation of silica sol: mixing tetraethyl orthosilicate, ammonia, deionized water, and ethanol at a molar ratio of 1: (0.4-0.6): (8-10): (10-12), stirring and reacting at 25-30℃ for 2-4 h, and then standing and aging for 25-28 h to obtain silica sol with a solid content of 5-8%; S102, preparation of AR coating solution; S103, coating treatment: using a roller coating machine to coat the AR coating solution on the anti-skid texture surface of step four, controlling the roller speed at 150-180 r / min and the coating pressure at 0.4-0.5 MPa to form a coating layer with a wet film thickness of 100-120 μm; S104, curing and tempering: first, the coated glass is air-dried at room temperature for 10-20 min, then heated and cured in an oven at 80-120℃ for 40-60 min, and finally sent to a tempering furnace, heated and kept at 680-700℃ for 20-30 min, and naturally cooled to room temperature to complete the AR anti-reflection treatment.

[0014] Preferably, the specific preparation method of the AR coating solution is as follows: A stabilizer, a viscosity regulator and a binder are added to the silica sol of S101, wherein the stabilizer is added in an amount of 5-8% of the mass of the sol, the viscosity regulator is added in an amount of 2-5% of the mass of the sol, and the binder is added in an amount of 1-3% of the mass of the sol, and stirring is performed at 25-35 DEG C for 30 min to obtain an AR coating solution with a viscosity of 25-30 mPa s.

[0015] Preferably, the stabilizer is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity regulator is propylene glycol.

[0016] The ethylene glycol monomethyl ether can effectively inhibit the agglomeration of sol particles, and the combination of propylene glycol can precisely control the viscosity of the coating solution to be 25-30 mPa s, which is fully suitable for the subsequent roller coating process, the binder KH-570 enhances the adhesion of the coating layer to the glass, the siloxane group in the KH-570 molecule can react with the hydroxyl group of the silica sol, and the double bond group can form a crosslinked structure during the curing process, so that the adhesion of the coating layer to the glass substrate is improved.

[0017] Compared with the prior art, the present application has the following beneficial effects: The present application realizes a breakthrough improvement in the anti-skid performance through the synergistic process of acid etching + frosting treatment, and realizes the coordinated balance between anti-skid and light transmission through the combined scheme of precise process parameter control + AR anti-reflection treatment. On the one hand, the acid etching depth is strictly controlled to be 10-130 μm to avoid excessive corrosion and damage to the light transmission structure of the glass; the frosting treatment uses a frosting solution with a specific ratio to form micro concave-convex structures on the textured surface, without affecting the overall light transmission path; on the other hand, the AR anti-reflection treatment prepares a silica coating layer by sol-gel method, and the refractive index (1.45-1.50) of the silica coating layer is gradient-matched with the glass substrate (1.52), so that the light reflection loss can be reduced; the anti-skid structure of the present application is formed by chemical etching of the glass itself, and belongs to a part of the glass body, rather than an additional attached layer, so that the durability is high. The modified barium sulfate agent is innovatively added to the frosting solution, and in the preparation process, the modified barium sulfate agent is activated by preheating of silicon carbide and cooperated with the modification of nano titanium dioxide and silane coupling agent KH560, so that more uniform and more wear-resistant crystalline particles of barium sulfate are formed on the glass surface, which not only strengthens the bonding force between the frosting layer and the glass body, but also further improves the surface friction coefficient. DETAILED DESCRIPTION

[0018] With reference to the specific embodiments below, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] The BIPV outer surface glass with anti-skid effect in the embodiment comprises a photovoltaic embossed glass base layer, and the smooth surface of the photovoltaic embossed glass base layer is processed by the following steps. Step one, plane texture acid-proof protection: texture protection ink is used to print texture to protect the reserved texture area; Step two, back acid-proof protection: acid-proof protective film with a viscosity of 150-350 g / cm2 is attached to the back embossed surface of the photovoltaic embossed glass base layer; Step three, acid etching anti-skid texture: hydrofluoric acid with a concentration of 8-20% is used to etch the smooth surface processed in step one for 10-150 minutes to form anti-skid texture with a depth of 10-130 μm; Step four, frosting treatment: frosting solution is used to treat the anti-skid texture surface formed in step three, the solution is uniformly sprayed on the glass surface and soaked for 5-20 minutes, so that the texture surface roughness reaches 0.8-3 μm; Step five, AR anti-reflection treatment: AR coating solution is prepared by sol-gel method, silica sol is prepared by taking tetraethyl orthosilicate as a precursor and ammonia as a catalyst, after adding stabilizer, viscosity adjuster and binder diluent, the AR coating solution is coated on the anti-skid texture surface by a roller coating machine, and after surface drying, heating and curing, it is treated in a toughening furnace.

[0020] The protective ink in the embodiment comprises 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive; The resin is phenolic resin, the pigment is carbon black, the solvent is dimethylbenzene, and the additive is plasticizer and adhesion promoter prepared according to a weight ratio of 1:1; The plasticizer is dibutyl phthalate, and the adhesion promoter is 1,2-bis(trimethoxysilyl)ethane.

[0021] The acid-proof protective film in the embodiment is made of polytetrafluoroethylene, and the polytetrafluoroethylene protective film can be used for a long time in the temperature range of-180-260℃.

[0022] The frosting solution in the embodiment comprises 20-25 parts of water, 15-20 parts of hydrofluoric acid, 12-15 parts of ammonium bifluoride, 1-2 parts of potassium fluoborate, 1-2 parts of potassium fluoride and 3-5 parts of modified barium sulfate agent.

[0023] The preparation method of the modified barium sulfate agent of the embodiment is as follows: S11: Stir the silicon carbide in a sufficient amount of a 10-15% mass fraction potassium permanganate solution, then wash with water, suction filter, and dry. Preheat the dried silicon carbide at 60-65℃ for 1h to obtain preheated silicon carbide agent; S21: Mix 3-5 parts of nano titanium dioxide, 4-6 parts of a sodium lignosulfonate solution, 1-2 parts of silane coupling agent KH560, and 2-3 parts of nano calcium carbonate to obtain a modified solution; S31: Preheat the barium sulfate at 55-65℃ for 1h. Stir the preheated barium sulfate in the modified solution at 5-8 times the total amount of the preheated barium sulfate to obtain a barium sulfate modified solution; Ball mill the barium sulfate modified solution and the silicon carbide agent according to a weight ratio of (7-11):5. After ball milling, suction filter and dry to obtain a modified barium sulfate agent.

[0024] The mass fraction of the sodium lignosulfonate solution of the embodiment is 7-10%.

[0025] The stirring speed of the stirring modification treatment is 450-500r / min, and the stirring time is 1h. The ball milling speed of the ball milling treatment is 1050-1150r / min, and the ball milling time is 2h.

[0026] The specific process of the AR anti-reflection treatment of the embodiment is as follows: S101, silica sol preparation: mix tetraethyl orthosilicate, ammonia, deionized water, and ethanol according to a molar ratio of 1:(0.4-0.6):(8-10):(10-12), and stir at 25-30℃ for 2-4h. Then, let stand for 25-28h to obtain silica sol with a solid content of 5-8%; S102, AR coating solution preparation; S103, coating treatment: use a roller coating machine to coat the AR coating solution on the anti-slip textured surface of step four, control the roller speed at 150-180r / min, and control the coating pressure at 0.4-0.5MPa to form a coating layer with a wet film thickness of 100-120μm; S104, curing and tempering: first, dry the coated glass at room temperature for 10-20min, then place it in an oven at 80-120℃ for 40-60min, and finally, send it to a tempering furnace, heat it at 680-700℃ for 20-30min, and naturally cool it to room temperature to complete the AR anti-reflection treatment.

[0027] The specific preparation method of the AR coating solution of the embodiment is as follows: The stabilizer, the viscosity regulator and the binder are added into the silica sol of S101, wherein the amount of the stabilizer is 5-8% of the mass of the sol, the amount of the viscosity regulator is 2-5% of the mass of the sol, and the amount of the binder is 1-3% of the mass of the sol; the mixture is stirred at 25-35°C for 30 min to obtain a sol with a viscosity of 25-30 mPa The AR coating solution of the present embodiment.

[0028] The stabilizer of the present embodiment is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity regulator is propylene glycol.

[0029] Embodiment 1. The BIPV outer surface glass with anti-skid effect of the present embodiment comprises a photovoltaic embossed glass base layer, and the smooth surface of the photovoltaic embossed glass base layer is treated by the following steps: Step one, plane texture acid-proof protection: the texture is printed with protective ink to protect the reserved texture area; Step two, back acid-proof protection: an acid-resistant protective film with a viscosity of 150 g / cm² is attached to the back embossed surface of the photovoltaic embossed glass base layer; Step three, acid etching anti-skid texture: the smooth surface treated in step one is etched with hydrofluoric acid with a concentration of 8% for 10 min to form an anti-skid texture with a depth of 10 μm; Step four, frosting treatment: the anti-skid texture surface formed in step three is treated with frosting solution, the solution is evenly sprayed on the glass surface and soaked for 5 min, so that the roughness of the texture surface reaches 0.8 μm; Step five, AR anti-reflection treatment: the AR coating solution is prepared by sol-gel method, the silica sol is prepared with tetraethyl orthosilicate as the precursor and ammonia as the catalyst, the stabilizer, the viscosity regulator and the binder are added for dilution, the AR coating solution is coated on the anti-skid texture surface by a roller coating machine, and then the surface is dried, heated and cured before entering the toughening furnace.

[0030] The protective ink of the present embodiment is composed of 20 parts by weight of resin, 3 parts of pigment, 10 parts of solvent and 3 parts of additive; The resin is phenolic resin, the pigment is carbon black, the solvent is xylene, and the additive is a plasticizer and an adhesion promoter prepared according to a weight ratio of 1:1; The plasticizer is dibutyl phthalate, and the adhesion promoter is 1,2-bis(trimethoxysilyl)ethane.

[0031] The acid-resistant protective film of the present embodiment is made of polytetrafluoroethylene, and the polytetrafluoroethylene protective film can be used for a long time at a temperature range of -180°C.

[0032] The fritted solution of the embodiment is composed of 20 parts of water, 15 parts of hydrofluoric acid, 12 parts of ammonium hydrogen fluoride, 1 part of potassium fluoborate, 1 part of potassium fluoride, and 3 parts of modified barium sulfate agent.

[0033] The preparation method of the modified barium sulfate agent of the embodiment is as follows: S11: Stir the silicon carbide in a sufficient amount of 10% mass fraction potassium permanganate solution, then wash with water, suction filter, and dry. The dried silicon carbide is preheated at 60℃ for 1h to obtain preheated silicon carbide agent; S21: Mix 3 parts of nano titanium dioxide, 4 parts of sodium lignosulfonate solution, 1 part of silane coupling agent KH560, and 2 parts of nano calcium carbonate to obtain a modified solution; S31: Preheat the barium sulfate at 55℃ for 1h. Stir the preheated barium sulfate in the modified solution which is 5 times the total amount of the preheated barium sulfate to obtain a modified barium sulfate solution; Ball mill the modified barium sulfate solution and the silicon carbide agent according to a weight ratio of 7:5. After ball milling, suction filter and dry to obtain the modified barium sulfate agent.

[0034] The mass fraction of the sodium lignosulfonate solution of the embodiment is 7%.

[0035] The stirring speed of the stirring modification treatment of the embodiment is 450r / min, and the stirring time is 1h. The ball milling speed of the ball milling treatment is 1050r / min, and the ball milling time is 2h.

[0036] The specific process of the AR anti-reflection treatment of the embodiment is as follows: S101, silica sol preparation: mix tetraethyl orthosilicate, ammonia, deionized water, and ethanol according to a molar ratio of 1:0.4:8:10, stir at 2℃ for 2h, and then stand for aging for 25h to obtain silica sol with a solid content of 5%; S102, AR coating solution preparation; S103, coating treatment: use a roller coating machine to coat the AR coating solution on the anti-slip textured surface of step four, control the roller speed at 150r / min, and the coating pressure at 0.4MPa to form a coating layer with a wet film thickness of 100μm; S104, curing and tempering: first dry the coated glass at room temperature for 10-20min, then heat it in an oven at 80℃ for 40min, and finally send it into a tempering furnace, heat it at 680℃ for 20min, and naturally cool it to room temperature to complete the AR anti-reflection treatment.

[0037] The specific preparation method of the AR coating solution of the embodiment is as follows: The stabilizer, viscosity modifier and binder are added into the silica sol of S101, wherein the amount of the stabilizer is 5% of the mass of the sol, the amount of the viscosity modifier is 2% of the mass of the sol, and the amount of the binder is 1% of the mass of the sol. The mixture is stirred at 25°C for 30 min to obtain a sol with a viscosity of 25 mPa·s. The AR coating solution of the present embodiment.

[0038] The stabilizer of the present embodiment is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity modifier is propylene glycol.

[0039] Embodiment 2. The BIPV outer surface glass with anti-skid effect of the present embodiment comprises a photovoltaic textured glass base layer, and the smooth surface of the photovoltaic textured glass base layer is treated by the following steps. Step one, plane texture acid-proof protection: the texture is printed by using protective ink to protect the reserved texture area; Step two, back acid-proof protection: an acid-resistant protective film with a viscosity of 350 g / cm2 is attached to the back textured surface of the photovoltaic textured glass base layer; Step three, acid etching anti-skid texture: the smooth surface treated in step one is etched by using 20% hydrofluoric acid for 150 min to form an anti-skid texture with a depth of 130 μm; Step four, frosting treatment: the anti-skid texture surface formed in step three is treated by using frosting solution, the solution is uniformly sprayed on the glass surface and soaked for 20 min, so that the roughness of the texture surface reaches 3 μm; Step five, AR anti-reflection treatment: the AR coating solution is prepared by using sol-gel method, the silica sol is prepared by using tetraethyl orthosilicate as precursor and ammonia as catalyst, the stabilizer, viscosity modifier and binder are added for dilution, the AR coating solution is coated on the anti-skid texture surface by using a roller coating machine, and the coated glass is dried, heated and cured, and then treated in a tempering furnace.

[0040] The protective ink of the present embodiment is composed of 25 parts by weight of resin, 5 parts of pigment, 15 parts of solvent and 5 parts of additive; The resin is phenolic resin, the pigment is carbon black, the solvent is dimethylbenzene, and the additive is prepared by mixing plasticizer and adhesion promoter at a weight ratio of 1:1; The plasticizer is dibutyl phthalate, and the adhesion promoter is 1,2-bis(trimethoxysilyl)ethane.

[0041] The acid-resistant protective film of the present embodiment is made of polytetrafluoroethylene, and the polytetrafluoroethylene protective film can be used for a long time at a temperature range of 260°C.

[0042] The fritted solution of the embodiment is composed of 25 parts of water, 20 parts of hydrofluoric acid, 15 parts of ammonium hydrogen fluoride, 2 parts of potassium fluoborate, 2 parts of potassium fluoride, and 5 parts of modified barium sulfate agent.

[0043] The preparation method of the modified barium sulfate agent of the embodiment is as follows: S11: Stir the silicon carbide in a sufficient amount of 15% mass fraction potassium permanganate solution, then wash with water, suction filter, and dry. The dried silicon carbide is preheated at 65℃ for 1h to obtain preheated silicon carbide agent; S21: Mix 5 parts of nano titanium dioxide, 6 parts of sodium lignosulfonate solution, 2 parts of silane coupling agent KH560, and 3 parts of nano calcium carbonate to obtain a modified solution; S31: Preheat the barium sulfate at 65℃ for 1h. Stir the preheated barium sulfate in the modified solution which is 8 times the total amount of the preheated barium sulfate to obtain a barium sulfate modified solution; Ball mill the barium sulfate modified solution and the silicon carbide agent according to a weight ratio of 11:5. After ball milling, suction filter and dry to obtain the modified barium sulfate agent.

[0044] The mass fraction of the sodium lignosulfonate solution of the embodiment is 10%.

[0045] The stirring speed of the stirring modification treatment of the embodiment is 500r / min, and the stirring time is 1h. The ball milling speed of the ball milling treatment is 1150r / min, and the ball milling time is 2h.

[0046] The specific process of the AR anti-reflection treatment of the embodiment is as follows: S101, silica sol preparation: mix tetraethyl orthosilicate, ammonia, deionized water, and ethanol according to a molar ratio of 1:0.6:10:12, stir and react at 30℃ for 4h, and then stand for aging for 28h to obtain silica sol with a solid content of 8%; S102, AR coating solution preparation; S103, coating treatment: use a roller coating machine to coat the AR coating solution on the anti-slip texture surface of step four, control the roller speed at 180r / min and the coating pressure at 0.5MPa to form a coating layer with a wet film thickness of 120μm; S104, curing and tempering: first dry the coated glass at room temperature for 20min, then heat it in an oven at 120℃ for 60min, and finally send it to a tempering furnace, heat it at 700℃ for 30min, and naturally cool it to room temperature to complete the AR anti-reflection treatment.

[0047] The specific preparation method of the AR coating solution of the embodiment is as follows: The stabilizer, viscosity modifier and binder are added to the silica sol of S101, wherein the stabilizer is added in an amount of 8% of the mass of the sol, the viscosity modifier is added in an amount of 5% of the mass of the sol, and the binder is added in an amount of 3% of the mass of the sol, and the mixture is stirred at 35°C for 30 min to obtain a sol with a viscosity of 25-30 mPa The AR coating solution of the present embodiment.

[0048] The stabilizer of the present embodiment is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity modifier is propylene glycol.

[0049] Embodiment 3. The BIPV outer surface glass with anti-skid effect of the present embodiment comprises a photovoltaic embossed glass base layer, and the smooth surface of the photovoltaic embossed glass base layer is treated by the following steps. Step one, plane texture acid-proof protection: protective ink is used to print texture to protect the reserved texture area; Step two, back acid-proof protection: an acid-resistant protective film with a viscosity of 200 g / cm² is attached to the back embossed surface of the photovoltaic embossed glass base layer; Step three, acid etching anti-skid texture: hydrofluoric acid with a concentration of 15% is used to etch the smooth surface treated in step one for 50 min to form an anti-skid texture with a depth of 55 μm; Step four, frosting treatment: frosting solution is used to treat the anti-skid texture surface formed in step three, the solution is uniformly sprayed on the glass surface and soaked for 15 min, so that the roughness of the texture surface reaches 1 μm; Step five, AR anti-reflection treatment: AR coating solution is prepared by sol-gel method, silica sol is prepared by using tetraethyl orthosilicate as precursor and ammonia as catalyst, and then the stabilizer, viscosity modifier and binder are added for dilution, the AR coating solution is coated on the anti-skid texture surface by roller coating machine, and then the surface is dried, heated and cured, and finally treated in a toughening furnace.

[0050] The protective ink of the present embodiment is composed of 22.5 parts by weight of resin, 4 parts of pigment, 12.5 parts of solvent and 4 parts of additive; The resin is phenolic resin, the pigment is carbon black, the solvent is dimethylbenzene, and the additive is prepared by mixing plasticizer and adhesion promoter in a weight ratio of 1:1; The plasticizer is dibutyl phthalate, and the adhesion promoter is 1,2-bis(trimethoxysilyl)ethane.

[0051] The acid-resistant protective film of the present embodiment is made of polytetrafluoroethylene, and the polytetrafluoroethylene protective film can be used for a long time in the temperature range of -180-260°C.

[0052] The fritted solution of the embodiment is composed of 22.5 parts of water, 17.5 parts of hydrofluoric acid, 13.5 parts of ammonium hydrogen fluoride, 1.5 parts of potassium fluoborate, 1.5 parts of potassium fluoride, and 4 parts of modified barium sulfate agent.

[0053] The preparation method of the modified barium sulfate agent of the embodiment is as follows: S11: Stir the silicon carbide in a sufficient amount of 12.5% mass fraction potassium permanganate solution, then wash with water, filter and dry, and preheat the dried silicon carbide at 62.5℃ for 1h to obtain preheated silicon carbide agent; S21: Mix 4 parts of nano titanium dioxide, 5 parts of sodium lignosulfonate solution, 1.5 parts of silane coupling agent KH560, and 2.5 parts of nano calcium carbonate to obtain a modified solution; S31: Preheat the barium sulfate at 60℃ for 1h, and then stir the preheated barium sulfate in the modified solution at 5-8 times the total amount of the preheated barium sulfate to obtain a modified barium sulfate solution; Ball mill the modified barium sulfate solution and the silicon carbide agent according to a weight ratio of 9:5, filter and dry after ball milling to obtain a modified barium sulfate agent.

[0054] The mass fraction of the sodium lignosulfonate solution of the embodiment is 8%.

[0055] The stirring speed of the stirring modification treatment of the embodiment is 475r / min, and the stirring time is 1h; the ball milling speed of the ball milling treatment is 1100r / min, and the ball milling time is 2h.

[0056] The specific process of the AR anti-reflection treatment of the embodiment is as follows: S101, silica sol preparation: mix tetraethyl orthosilicate, ammonia, deionized water and ethanol at a molar ratio of 1:0.5:9:11 with tetraethyl orthosilicate as precursor and ammonia as catalyst, stir and react at 280℃ for 3h, and then stand for aging for 26.5h to obtain silica sol with a solid content of 6.5%; S102, AR coating solution preparation; S103, coating treatment: use a roller coating machine to coat the AR coating solution on the anti-slip textured surface of step four, control the roller speed at 16r / min and the coating pressure at 0.45MPa to form a coating layer with a wet film thickness of 110μm; S104, curing and tempering: first dry the coated glass at room temperature for 15min, then heat it in a 100℃ oven for 50min, and finally send it into a tempering furnace, heat it at 690℃ for 25min, and naturally cool it to room temperature to complete the AR anti-reflection treatment.

[0057] The specific preparation method of the AR coating solution of the embodiment is as follows: The stabilizer, the viscosity modifier and the binder are added into the silica sol of S101, wherein the amount of the stabilizer is 6.5% of the mass of the sol, the amount of the viscosity modifier is 3.5% of the mass of the sol, and the amount of the binder is 2% of the mass of the sol, and the mixture is stirred at 30℃ for 30 min, to obtain a sol with a viscosity of 27.5 mPa AR coating solution.

[0058] The stabilizer of the embodiment is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity modifier is propylene glycol.

[0059] Comparative Example 1. Different from Example 3 is that no modified barium sulfate agent is added.

[0060] Comparative Example 2. Different from Example 3 is that no silicon carbide agent is added in the preparation of the modified barium sulfate agent.

[0061] Comparative Example 3. Different from Example 3 is that no modified liquid treatment is used in the preparation of the modified barium sulfate agent.

[0062] Comparative Example 4. Different from Example 3 is that no nano titanium dioxide and silane coupling agent KH560 are added in the modified liquid.

[0063] Comparative Example 5. Different from Example 3 is that no AR anti-reflection treatment is used.

[0064] The performance of the products of Examples 1-3 and Comparative Examples 1-5 is tested as follows: As can be seen from Examples 1-3 and Comparative Examples 1-5, the light transmittance, slip resistance and wear resistance of the product of Example 3 can be improved in coordination, and the light transmittance, slip resistance and durability of the product are significantly improved. The performance of the product changes greatly when no modified barium sulfate agent is added and no AR anti-reflection treatment is used. Only when no silicon carbide agent is added in the preparation of the modified barium sulfate agent, no modified liquid treatment is used in the preparation of the modified barium sulfate agent, and no nano titanium dioxide and silane coupling agent KH560 are added in the modified liquid, the performance of the product has a deteriorating trend. Only the technical solution of the present application has the most significant effect.

[0065] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other embodiments without departing from the scope of the application. The embodiments are therefore to be seen as exemplary and in no way restrictive, the scope of the application being defined by the claims below rather than by the above description, and all variations falling within the meaning and range of equivalency of the essential characteristics of the claims are therefore intended to be embraced therein.

[0066] Furthermore, it should be understood that although the description is made according to embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and a person skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A BIPV outer surface glass having an anti-slip effect, comprising a photovoltaic textured glass base layer, characterized in that, The smooth surface of the photovoltaic embossed glass base is processed by the following steps: Step 1, plane texture acid-proof protection: the reserved texture area is protected by printing texture with protective ink; Step 2, back acid-proof protection: an acid-resistant protective film with a viscosity of 150-350 g / cm2 is attached to the back embossed surface of the photovoltaic embossed glass base; Step 3, acid etching anti-skid texture: the smooth surface after Step 1 is etched with hydrofluoric acid with a concentration of 8-20% for 10-150 minutes to form an anti-skid texture with a depth of 10-130 μm; Step 4, frosting treatment: the anti-skid texture surface formed in Step 3 is treated with a frosting solution, the solution is uniformly sprayed on the glass surface and soaked for 5-20 minutes, so that the texture surface roughness reaches 0.8-3 μm; Step 5, AR anti-reflection treatment: the AR coating solution is prepared by sol-gel method, the silicon dioxide sol is prepared with tetraethyl orthosilicate as precursor and ammonia as catalyst, the stabilizer, viscosity modifier and binder are added and diluted, then the AR coating solution is coated on the anti-skid texture surface by roller coating machine, and after surface drying and heat curing, it is treated in the toughening furnace.

2. The BIPV outer surface glass with anti-skid effect according to claim 1, characterized in that, The protective ink is composed of 20-25 parts by weight of resin, 3-5 parts of pigment, 10-15 parts of solvent and 3-5 parts of additive; The resin is phenolic resin, the pigment is carbon black, the solvent is xylene, and the additive is plasticizer and adhesion promoter prepared according to a weight ratio of 1:1; The plasticizer is dibutyl phthalate, and the adhesion promoter is 1,2-bis(trimethoxysilyl)ethane. 3.The BIPV outer surface glass with anti-skid effect according to claim 1, characterized in that, The acid-resistant protective film is made of polytetrafluoroethylene, and the polytetrafluoroethylene protective film can be used for a long time at a temperature range of-180-260℃. 4.The BIPV outer surface glass with an anti-skid effect according to claim 1, wherein, The frosting solution is composed of 20-25 parts of water, 15-20 parts of hydrofluoric acid, 12-15 parts of ammonium hydrogen fluoride, 1-2 parts of potassium fluoroborate, 1-2 parts of potassium fluoride and 3-5 parts of modified barium sulfate agent. 5.The BIPV outer surface glass with anti-skid effect according to claim 1, wherein, The preparation method of the modified barium sulfate agent is as follows: S11: The silicon carbide is stirred in a sufficient amount of 10-15% potassium permanganate solution, then washed with water, filtered and dried, and the dried silicon carbide is preheated at 60-65℃ for 1h to obtain preheated silicon carbide agent; S21: 3-5 parts of nano titanium dioxide, 4-6 parts of sodium lignosulfonate solution and 1-2 parts of silane coupling agent KH560 and 2-3 parts of nano calcium carbonate are fully blended to obtain a modified solution; S31: The barium sulfate is preheated at 55-65℃ for 1h, and then stirred in the modified solution which is 5-8 times the amount of the preheated barium sulfate to modify the barium sulfate, and the modified barium sulfate solution is obtained after modification; The barium sulfate modified solution and the silicon carbide agent are ball milled according to a weight ratio of (7-11):5, and then filtered and dried to obtain the modified barium sulfate agent.

6. The BIPV outer surface glass with an anti-skid effect according to claim 5, characterized in that, The mass fraction of the sodium lignosulfonate solution is 7-10%. 7.The BIPV outer surface glass with anti-skid effect according to claim 5, wherein, The stirring speed of the stirring modification treatment is 450-500 r / min, and the stirring time is 1h; the ball milling speed of the ball milling treatment is 1050-1150 r / min, and the ball milling time is 2h. 8.The BIPV outer surface glass with anti-skid effect according to claim 1, wherein, The specific process of the AR anti-reflection treatment is as follows: S101, silica sol preparation: using tetraethyl orthosilicate as precursor, ammonia as catalyst, mixing according to the molar ratio of tetraethyl orthosilicate, ammonia, deionized water and ethanol 1:(0.4-0.6):(8-10):(10-12), stirring at 25-30℃ for 2-4h, then standing for 25-28h, obtaining silica sol with solid content of 5-8%; S102, AR coating solution preparation; S103, coating treatment: using roller coating machine to coat AR coating solution on the anti-slip texture surface of step four, controlling the roller speed of 150-180r / min, coating pressure of 0.4-0.5MPa, forming a coating layer with wet film thickness of 100-120μm; S104, curing and tempering: first, the coated glass is dried at room temperature for 10-20min, then placed in an oven at 80-120℃ for heating and curing for 40-60min, finally sent to the tempering furnace, heated at 680-700℃ for 20-30min, and naturally cooled to room temperature, completing the AR anti-reflection treatment. 9.The BIPV outer surface glass with the anti-skid effect according to claim 8, characterized in that, The specific preparation method of the AR coating solution is: The stabilizer, viscosity modifier and binder are added into the silica sol of S101, wherein the amount of the stabilizer is 5-8% of the mass of the sol, the amount of the viscosity modifier is 2-5% of the mass of the sol, and the amount of the binder is 1-3% of the mass of the sol. The mixture is stirred at 25-35°C for 30 min to obtain an AR coating solution with a viscosity of 25-30 mPa·s. s. 10.The BIPV outer surface glass with an anti-skid effect according to claim 9, wherein, The stabilizer is ethylene glycol monomethyl ether, the binder is silane coupling agent KH-570, and the viscosity regulator is propylene glycol.

Images