CN113045216A - Self-cleaning coated glass for curtain wall and preparation method thereof - Google Patents
Self-cleaning coated glass for curtain wall and preparation method thereof Download PDFInfo
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- CN113045216A CN113045216A CN202110230985.7A CN202110230985A CN113045216A CN 113045216 A CN113045216 A CN 113045216A CN 202110230985 A CN202110230985 A CN 202110230985A CN 113045216 A CN113045216 A CN 113045216A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3405—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of organic materials
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/111—Deposition methods from solutions or suspensions by dipping, immersion
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Abstract
The invention discloses self-cleaning coated glass for curtain walls and a preparation method thereof, wherein a glass substrate is sequentially provided with a transition layer and a self-cleaning layer from bottom to top; the transition layer is mainly prepared by reacting silver nitrate and tannic acid; the self-cleaning layer comprises the following raw materials: 6-8 parts of uvioresistant particles, 10-20 parts of copolymer, 10-15 parts of polyurethane acrylate, 20-30 parts of deionized water, 1-3 parts of adhesive, 0.5-1 part of defoaming agent and 1-2 parts of flatting agent by weight; the uvioresistant particles are mainly prepared by the reaction of zinc nitrate, zirconium oxychloride, hexadecyl trimethyl ammonium bromide, caffeic acid and tetrahydrofuran; the copolymer is mainly prepared by reacting pentafluorostyrene, methyl methacrylate and an initiator. The preparation method is reasonable in process design and simple to operate, and the prepared coated glass has excellent ultraviolet shielding performance, a super-hydrophobic interface is constructed on the surface of the coated glass, so that the coated glass has an excellent self-cleaning effect and higher practicability.
Description
Technical Field
The invention relates to the technical field of coated glass, in particular to self-cleaning coated glass for a curtain wall and a preparation method thereof.
Background
The curtain wall is an outer wall enclosure of a building, is a light wall with decorative effect commonly used in modern large and high-rise buildings, is an outer enclosure structure or a decorative structure of the building consisting of a panel and a supporting structure system, and the coated glass is just one of the main raw materials for curtain wall construction.
At present, self-cleaning glass used outdoors is generally coated glass coated with a super-hydrophobic coating, but in the prior art, the adhesion between the hydrophobic coating and the glass is poor, the service life is short, the processing technology is complex, and the actual requirements of people cannot be met.
Disclosure of Invention
The invention aims to provide self-cleaning coated glass for a curtain wall and a preparation method thereof, and aims to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a curtain is with automatically cleaning coated glass, coated glass includes the glass base member, the glass base member is equipped with transition layer, automatically cleaning layer from bottom to top in proper order.
According to an optimized scheme, the transition layer is mainly prepared by reacting silver nitrate and tannic acid.
In an optimized scheme, the self-cleaning layer comprises the following raw materials: 6-8 parts of uvioresistant particles, 10-20 parts of copolymer, 10-15 parts of polyurethane acrylate, 20-30 parts of deionized water, 1-3 parts of adhesive, 0.5-1 part of defoaming agent and 1-2 parts of flatting agent.
According to an optimized scheme, the anti-ultraviolet particles are mainly prepared by reacting zinc nitrate, zirconium oxychloride, cetyl trimethyl ammonium bromide, caffeic acid and tetrahydrofuran.
According to an optimized scheme, the copolymer is mainly prepared by reacting pentafluorostyrene, methyl methacrylate and an initiator.
According to an optimized scheme, the initiator is azobisisobutyronitrile, and the mass ratio of the pentafluorostyrene to the methyl methacrylate is 7: 3.
according to an optimized scheme, the preparation method of the self-cleaning coated glass for the curtain wall comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking, adding tannic acid, mixing and stirring, taking out, washing with deionized water, and drying in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 140 ℃ and 150 ℃, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 50-55 ℃, adding the composite particles, reacting at constant temperature, adding a sodium hydroxide solution after the reaction is finished, centrifugally separating, washing and drying to obtain anti-ultraviolet particles;
(4) placing uvioresistant particles in deionized water, performing ultrasonic dispersion, adding sodium hydroxide and propynylamine, continuously stirring, and stirring for reaction under the condition of oil bath at the temperature of 75-80 ℃ to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 70-75 ℃ for continuous reaction for 10-12h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing with methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion to obtain a solution B;
taking polyurethane acrylate and deionized water, performing ultrasonic dispersion at 60-70 ℃, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction, then placing the glass substrate in the solution A, continuously soaking, taking out the glass substrate, placing the glass substrate in the solution C, standing, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
The optimized scheme comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 2-3min, adding tannic acid, mixing and stirring for 5-10min, taking out, washing with deionized water, and drying in vacuum at 70-80 ℃ to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 10-20min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 140 ℃ and 150 ℃, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 50-55 ℃, adding the composite particles, reacting at constant temperature for 5-6h, adding sodium hydroxide solution after the reaction is finished, centrifuging, washing and drying to obtain anti-ultraviolet particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 5-10min, adding sodium hydroxide and propynylamine, continuing stirring for 20-30min, and stirring and reacting for 20-22h under the condition of oil bath at the temperature of 75-80 ℃ to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 70-75 ℃ for continuous reaction for 10-12h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing with methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion for 10-15min, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion for 5-10min to obtain a solution B;
taking urethane acrylate and deionized water, performing ultrasonic dispersion at 60-70 ℃ for 15-20min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 30-40min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction, then placing the glass substrate in the solution A, continuously soaking for 8-10h, taking out the glass substrate and placing the glass substrate in the solution C, standing for 20-24h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
According to a more optimized scheme, in the step (2), the hydrothermal reaction time is 25-35 min.
In an optimized scheme, in the step (5), the oscillation reaction time is 4-5 h.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses self-cleaning coated glass for curtain walls and a preparation method thereof, and the self-cleaning coated glass specifically comprises a glass substrate, wherein a transition layer and a self-cleaning layer are sequentially arranged on the surface of the glass substrate, in actual processing, the surface of the glass substrate is firstly cleaned to ensure the smooth proceeding of the subsequent coating process, then the transition layer is processed on the surface of the glass substrate, the transition layer mainly comprises silver nitrate and tannic acid, wherein the tannic acid has a plurality of ortho-position phenolic hydroxyl structures and can generate complex reaction with metal ions, the transition layer is formed on the surface of a glass substrate by compounding the tannic acid and the silver nitrate, and due to the existence of the tannic acid, the transition layer has excellent adhesion performance, can improve the adhesion of a subsequent coating, and simultaneously, unreacted phenolic hydroxyl in the tannic acid can be chemically combined and crosslinked with a subsequent copolymer so as to improve the adhesion of the whole film layer; due to the existence of silver ions, the transition layer also has certain antibacterial performance, so that the glass has the antibacterial and antibacterial effects on escherichia coli, staphylococcus aureus and the like.
In order to improve the uvioresistant performance of the coated glass, the uvioresistant particles are added, and are mainly prepared by the reaction of zinc nitrate and zirconium oxychloride, so that zirconium-doped composite particles are prepared, and the particles have excellent uvioresistant shielding effect; and then, performing surface modification on the composite particles through caffeic acid to enable the surfaces of the composite particles to carry carboxyl groups and carry negative charges in an alkaline environment so as to improve the dispersing performance of the ultraviolet-resistant particles.
In order to construct a self-cleaning surface, a self-cleaning layer which takes pentafluorostyrene and polyurethane acrylate as main materials is coated on the outermost layer of a glass substrate, but ultraviolet-resistant particles are generally added into the self-cleaning layer as a filler in a conventional processing method to ensure the ultraviolet shielding effect of the glass substrate, but the compatibility between the ultraviolet-resistant particles and the polyurethane acrylate and a copolymer is poor, so the ultraviolet-resistant particles are firstly dispersed in a general processing process, the process is very complicated, the dispersing effect of the dispersed ultraviolet-resistant particles in the self-cleaning layer is still unsatisfactory, aiming at the problem, a copolymer is designed in the application, the copolymer is mainly prepared by reacting pentafluorostyrene, methyl methacrylate and an initiator, due to the existence of the pentafluorostyrene, the copolymer has excellent super-hydrophobic property, when the glass substrate with a transition layer is placed in a copolymer solution, the copolymer film is formed on the surface of the glass substrate, then the glass substrate is placed in the ultraviolet-resistant particle solution, the propargylamine contains amino and can be combined with carboxyl on the surface of the ultraviolet-resistant particle to enable the propargylamine to have alkynyl, and the alkynyl can perform cycloaddition reaction with cyano in a copolymer.
Then, the glass matrix is placed in a solution C mixed with components such as polyurethane acrylate and an adhesive, and the copolymer and the components in the solution C can be mutually crosslinked, so that the compactness of the whole glass matrix is improved, and the self-cleaning effect of the glass matrix is further improved.
The application discloses self-cleaning coated glass for curtain walls and a preparation method thereof, the process design is reasonable, the operation is simple, the prepared coated glass has excellent ultraviolet shielding performance, a super-hydrophobic interface is constructed on the surface of the coated glass, the self-cleaning effect is excellent, and the practicability is high.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a preparation method of self-cleaning coated glass for curtain walls comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 2min, adding tannic acid, mixing and stirring for 5min, taking out, washing with deionized water, and drying at 70 ℃ in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 10min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 140 ℃ for 25min, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 50 ℃, adding the composite particles, reacting at constant temperature for 5h, adding a sodium hydroxide solution after the reaction is finished, performing centrifugal separation, washing and drying to obtain anti-ultraviolet particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 5min, adding sodium hydroxide and propynylamine, continuing stirring for 20min, and stirring and reacting for 20h under the condition of oil bath at the temperature of 75 ℃ to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 70 ℃ for continuous reaction for 10 hours, taking a reaction product, placing in a tetrahydrofuran solution, rinsing by using methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion for 10min, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion for 5min to obtain a solution B;
taking polyurethane acrylate and deionized water, performing ultrasonic dispersion at 60 ℃ for 15min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 30min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction for 4h, then placing the glass substrate in the solution A, continuously soaking for 8h, taking out the glass substrate and placing the glass substrate in the solution C, standing for 20h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
In this embodiment, the self-cleaning layer comprises the following raw materials: by weight, 6 parts of ultraviolet resistant particles, 10 parts of copolymer, 10 parts of urethane acrylate, 20 parts of deionized water, 1 part of adhesive, 0.5 part of defoaming agent and 1 part of flatting agent.
Example 2:
a preparation method of self-cleaning coated glass for curtain walls comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 3min, adding tannic acid, mixing and stirring for 8min, taking out, washing with deionized water, and drying at 75 ℃ in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 15min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 145 ℃ for 30min, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 53 ℃, adding the composite particles, reacting at constant temperature for 5.5h, adding a sodium hydroxide solution after the reaction is finished, performing centrifugal separation, washing and drying to obtain anti-ultraviolet particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 8min, adding sodium hydroxide and propynylamine, continuing stirring for 25min, and stirring and reacting for 21h under 78 ℃ oil bath to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 72 ℃ for continuous reaction for 11h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing by using methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, carrying out ultrasonic dispersion for 12min, adding trifluoromethanesulfonic acid, and continuing to carry out ultrasonic dispersion for 8min to obtain a solution B;
taking urethane acrylate and deionized water, performing ultrasonic dispersion at 65 ℃ for 18min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 35min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction for 4.5h, then placing the glass substrate in the solution A, continuously soaking for 9h, taking out the glass substrate, placing the glass substrate in the solution C, standing for 23h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
In this embodiment, the self-cleaning layer comprises the following raw materials: 7 parts of ultraviolet-resistant particles, 15 parts of copolymer, 13 parts of urethane acrylate, 25 parts of deionized water, 2 parts of adhesive, 0.8 part of defoaming agent and 1.5 parts of flatting agent.
Example 3:
a preparation method of self-cleaning coated glass for curtain walls comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 3min, adding tannic acid, mixing and stirring for 10min, taking out, washing with deionized water, and drying in vacuum at 80 ℃ to obtain the glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 20min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 150 ℃ for 35min, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in 55 deg.C water bath, adding composite particles, reacting at constant temperature for 6h, adding sodium hydroxide solution after reaction, centrifuging, washing, and drying to obtain uvioresistant particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 10min, adding sodium hydroxide and propynylamine, continuing stirring for 30min, and stirring and reacting for 22h under 80 ℃ oil bath to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 75 ℃ for continuous reaction for 12h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing by using methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion for 15min, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion for 10min to obtain a solution B;
taking urethane acrylate and deionized water, performing ultrasonic dispersion at 70 ℃ for 20min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 40min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction for 5h, then placing the glass substrate in the solution A, continuously soaking for 10h, taking out the glass substrate and placing the glass substrate in the solution C, standing for 24h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
In this embodiment, the self-cleaning layer comprises the following raw materials: 8 parts of ultraviolet-resistant particles, 20 parts of copolymer, 15 parts of urethane acrylate, 30 parts of deionized water, 3 parts of adhesive, 1 part of defoaming agent and 2 parts of flatting agent.
Comparative example 1:
a preparation method of self-cleaning coated glass for curtain walls comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 3min, adding tannic acid, mixing and stirring for 8min, taking out, washing with deionized water, and drying at 75 ℃ in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 15min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 145 ℃ for 30min, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 53 ℃, adding the composite particles, reacting at constant temperature for 5.5h, adding a sodium hydroxide solution after the reaction is finished, performing centrifugal separation, washing and drying to obtain anti-ultraviolet particles;
(4) taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 72 ℃ for continuous reaction for 11h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing by using methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, carrying out ultrasonic dispersion for 12min, adding trifluoromethanesulfonic acid, and continuing to carry out ultrasonic dispersion for 8min to obtain a solution B;
taking urethane acrylate, ultraviolet-resistant particles and deionized water, performing ultrasonic dispersion at 65 ℃ for 18min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 35min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction for 4.5h, taking out, placing in the solution C, standing for 23h, taking out, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
In this embodiment, the self-cleaning layer comprises the following raw materials: 7 parts of ultraviolet-resistant particles, 15 parts of copolymer, 13 parts of urethane acrylate, 25 parts of deionized water, 2 parts of adhesive, 0.8 part of defoaming agent and 1.5 parts of flatting agent.
The uvioresistant particles in the comparative example 1 are directly added into the main material, and the content of the rest components and the process parameters are consistent with those of the example 2.
Comparative example 2:
a preparation method of self-cleaning coated glass for curtain walls comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 3min, adding tannic acid, mixing and stirring for 8min, taking out, washing with deionized water, and drying at 75 ℃ in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 15min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 145 ℃ for 30min, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 53 ℃, adding the composite particles, reacting at constant temperature for 5.5h, adding a sodium hydroxide solution after the reaction is finished, performing centrifugal separation, washing and drying to obtain anti-ultraviolet particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 8min, adding sodium hydroxide and propynylamine, continuing stirring for 25min, and stirring and reacting for 21h under 78 ℃ oil bath to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 72 ℃ for continuous reaction for 11h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing by using methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, carrying out ultrasonic dispersion for 12min, adding trifluoromethanesulfonic acid, and continuing to carry out ultrasonic dispersion for 8min to obtain a solution B;
taking urethane acrylate and deionized water, performing ultrasonic dispersion at 65 ℃ for 18min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 35min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction for 4.5h, then placing the glass substrate in the solution A, continuously soaking for 9h, taking out the glass substrate, placing the glass substrate in the solution C, standing for 23h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
In this embodiment, the self-cleaning layer comprises the following raw materials: 7 parts of ultraviolet-resistant particles, 15 parts of copolymer, 13 parts of urethane acrylate, 25 parts of deionized water, 2 parts of adhesive, 0.8 part of defoaming agent and 1.5 parts of flatting agent.
Comparative example 2 no transition layer was made and the remaining process parameters and component levels were consistent with example 2.
And (3) detection test:
1. the coated glasses prepared in examples 1 to 3 and comparative examples 1 to 2 were measured for surface contact angles, respectively.
2. The coated glass prepared in examples 1-3 and comparative examples 1-2 was tested for UV screening according to GBT 2680-.
And (4) conclusion: the application discloses self-cleaning coated glass for curtain walls and a preparation method thereof, the process design is reasonable, the operation is simple, the prepared coated glass has excellent ultraviolet shielding performance, a super-hydrophobic interface is constructed on the surface of the coated glass, the self-cleaning effect is excellent, and the practicability is high.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a curtain is with automatically cleaning coated glass which characterized in that: the coated glass comprises a glass substrate, wherein the glass substrate is sequentially provided with a transition layer and a self-cleaning layer from bottom to top.
2. The self-cleaning coated glass for the curtain wall as claimed in claim 1, wherein: the transition layer is mainly prepared by reacting silver nitrate and tannic acid.
3. The self-cleaning coated glass for the curtain wall as claimed in claim 1, wherein: the self-cleaning layer comprises the following raw materials: 6-8 parts of uvioresistant particles, 10-20 parts of copolymer, 10-15 parts of polyurethane acrylate, 20-30 parts of deionized water, 1-3 parts of adhesive, 0.5-1 part of defoaming agent and 1-2 parts of flatting agent.
4. The self-cleaning coated glass for the curtain wall as claimed in claim 3, wherein: the uvioresistant particles are mainly prepared by the reaction of zinc nitrate, zirconium oxychloride, hexadecyl trimethyl ammonium bromide, caffeic acid and tetrahydrofuran.
5. The self-cleaning coated glass for the curtain wall as claimed in claim 3, wherein: the copolymer is mainly prepared by reacting pentafluorostyrene, methyl methacrylate and an initiator.
6. The self-cleaning coated glass for the curtain wall as claimed in claim 5, wherein: the initiator is azobisisobutyronitrile, and the mass ratio of the pentafluorostyrene to the methyl methacrylate is 7: 3.
7. a preparation method of self-cleaning coated glass for curtain walls is characterized by comprising the following steps: the method comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking, adding tannic acid, mixing and stirring, taking out, washing with deionized water, and drying in vacuum to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 140 ℃ and 150 ℃, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 50-55 ℃, adding the composite particles, reacting at constant temperature, adding a sodium hydroxide solution after the reaction is finished, centrifugally separating, washing and drying to obtain anti-ultraviolet particles;
(4) placing uvioresistant particles in deionized water, performing ultrasonic dispersion, adding sodium hydroxide and propynylamine, continuously stirring, and stirring for reaction under the condition of oil bath at the temperature of 75-80 ℃ to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 70-75 ℃ for continuous reaction for 10-12h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing with methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion to obtain a solution B;
taking polyurethane acrylate and deionized water, performing ultrasonic dispersion at 60-70 ℃, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction, then placing the glass substrate in the solution A, continuously soaking, taking out the glass substrate, placing the glass substrate in the solution C, standing, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
8. The preparation method of the self-cleaning coated glass for the curtain wall as claimed in claim 7, wherein the preparation method comprises the following steps: the method comprises the following steps:
(1) washing a glass substrate with deionized water, drying, placing the glass substrate in a silver nitrate solution, soaking for 2-3min, adding tannic acid, mixing and stirring for 5-10min, taking out, washing with deionized water, and drying in vacuum at 70-80 ℃ to obtain a glass substrate with a transition layer;
(2) mixing and stirring zinc nitrate, zirconium oxychloride and hexadecyl trimethyl ammonium bromide for 10-20min, adding a sodium hydroxide solution, transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction at the temperature of 140 ℃ and 150 ℃, collecting a product, washing the product by deionized water and absolute ethyl alcohol in sequence, and drying the product in vacuum to obtain composite particles;
uniformly mixing caffeic acid and tetrahydrofuran solution, placing in a water bath at 50-55 ℃, adding the composite particles, reacting at constant temperature for 5-6h, adding sodium hydroxide solution after the reaction is finished, centrifuging, washing and drying to obtain anti-ultraviolet particles;
(4) placing the uvioresistant particles in deionized water, performing ultrasonic dispersion for 5-10min, adding sodium hydroxide and propynylamine, continuing stirring for 20-30min, and stirring and reacting for 20-22h under the condition of oil bath at the temperature of 75-80 ℃ to obtain a solution A;
taking pentafluorostyrene, methyl methacrylate and an initiator, uniformly mixing, placing at 70-75 ℃ for continuous reaction for 10-12h, taking a reaction product, placing in a tetrahydrofuran solution, rinsing with methanol as a precipitator, and drying in vacuum to obtain a copolymer;
taking the copolymer, placing the copolymer in a dichloromethane solution, performing ultrasonic dispersion for 10-15min, adding trifluoromethanesulfonic acid, and continuing to perform ultrasonic dispersion for 5-10min to obtain a solution B;
taking urethane acrylate and deionized water, performing ultrasonic dispersion at 60-70 ℃ for 15-20min, adding an adhesive, a defoaming agent and a leveling agent, and continuing stirring for 30-40min to obtain a solution C;
(5) and (3) placing the glass substrate with the transition layer in the solution B, carrying out oscillation reaction, then placing the glass substrate in the solution A, continuously soaking for 8-10h, taking out the glass substrate and placing the glass substrate in the solution C, standing for 20-24h, taking out the glass substrate, washing with deionized water, and carrying out vacuum drying to obtain a finished product.
9. The preparation method of the self-cleaning coated glass for the curtain wall as claimed in claim 8, wherein the preparation method comprises the following steps: in the step (2), the hydrothermal reaction time is 25-35 min.
10. The preparation method of the self-cleaning coated glass for the curtain wall as claimed in claim 8, wherein the preparation method comprises the following steps: in the step (5), the oscillation reaction time is 4-5 h.
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