CN111499220A - Preparation method of antibacterial glass and antibacterial glass - Google Patents
Preparation method of antibacterial glass and antibacterial glass Download PDFInfo
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- CN111499220A CN111499220A CN202010334218.6A CN202010334218A CN111499220A CN 111499220 A CN111499220 A CN 111499220A CN 202010334218 A CN202010334218 A CN 202010334218A CN 111499220 A CN111499220 A CN 111499220A
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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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
- B32B17/1088—Making laminated safety glass or glazing; Apparatus therefor by superposing a plurality of layered products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
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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
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/25—Oxides by deposition from the liquid phase
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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
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
- C03C17/322—Polyurethanes or polyisocyanates
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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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/005—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to introduce in the glass such metals or metallic ions as Ag, Cu
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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
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention relates to the technical field of antibacterial glass, in particular to a preparation method of antibacterial glass and the antibacterial glass, which comprises the following steps: providing two pieces of glass to be processed, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass; providing tempering furnace water containing potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange sodium ions, and then taking out and cooling to obtain two pieces of tempered glass; providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and carrying out ultraviolet irradiation on one piece of toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass, so that the antibacterial glass is suitable for different use environments such as dry and wet environments, and the antibacterial time and effect of the antibacterial glass can be prolonged.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of antibacterial glass, in particular to a preparation method of antibacterial glass and the antibacterial glass.
[ background of the invention ]
With the development, handheld electronic devices such as mobile phones and the like have become indispensable electronic products in life, and people frequently touch the mobile phones every day and place the mobile phones everywhere in the using process, so that a lot of bacteria are left on the surfaces of the mobile phones, and a great amount of bacteria on the surfaces of the mobile phones can bring certain harm to human bodies. The glass is processed to have antibacterial property, so that the glass can inhibit the breeding of various harmful bacteria such as algae, microbe, mildew, fungi and the like. However, the antibacterial time and the antibacterial effect of the existing antibacterial glass are still not ideal, and further improvement is needed.
[ summary of the invention ]
The invention provides a preparation method of antibacterial glass and the antibacterial glass, aiming at overcoming the problem that the antibacterial effect of the existing antibacterial glass is not good.
In order to solve the technical problems, the invention provides a preparation method of antibacterial glass, which comprises the following steps: s1, providing two pieces of glass to be processed, wherein the glass to be processed comprises sodium ions, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass; s2, providing tempering furnace water containing potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange the sodium ions, and taking out and cooling to obtain two pieces of tempered glass; s3, providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing the two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the two pieces of toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and S4, carrying out ultraviolet irradiation on one piece of toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass.
Preferably, the antibacterial furnace water further comprises zinc acetate and urotropine, wherein the zinc acetate and the urotropine respectively account for the total weight of the antibacterial furnace water: 10-16% and 2-10%.
Preferably, the antibacterial furnace water further comprises a dispersant.
Preferably, the preparation process of the antibacterial furnace water is as follows: mixing zinc acetate and urotropine, adding the mixture into deionized water 40-80 times of the weight of the zinc acetate and the urotropine, uniformly stirring to obtain solution a, and then sequentially adding a dispersing agent and a silver ion solution into the solution a.
Preferably, the concentration of the silver ion solution in the antibacterial furnace water is 0.01-0.1mg/m L.
Preferably, in the step S5, the ultraviolet light is irradiated for 10-30 min.
Preferably, the power of the ultraviolet light is 300-.
Preferably, in the above step S3, the ultraviolet-resistant layer is formed by coating or spraying.
Preferably, the ultraviolet resistant layer comprises the following components in percentage by weight: high-molecular polyurethane resin: 40-70 parts of; nano zinc oxide slurry: 20-35; coating auxiliary agent: 1-4.
In order to solve the technical problem, the invention also provides antibacterial glass prepared by the method, which comprises a first glass layer, an ultraviolet-resistant layer and a second glass layer which are sequentially overlapped, wherein the first glass layer comprises nano silver, and the second glass layer comprises silver ions.
Compared with the prior art, the method comprises the steps of providing two pieces of glass to be processed, wherein the glass to be processed comprises sodium ions, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass; providing tempering furnace water, wherein the tempering furnace water contains potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange the sodium ions, and then taking out and cooling to obtain two pieces of tempered glass; providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing the two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the two pieces of toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and carrying out ultraviolet irradiation on one of the toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass, in the process of preparing the antibacterial glass, carrying out ultraviolet irradiation on one surface of the toughened glass to reduce the silver ions into the nano silver in a manner of laminating two pieces of glass to be processed in a hot pressing manner, and arranging an ultraviolet-resistant layer between the two pieces of glass to be processed, after the antibacterial furnace is soaked in water, wherein the silver ions are generally subjected to ultraviolet irradiation, and factors such as chemical substance interference can easily cause the silver ions to be oxidized and deteriorated, so that the antibacterial performance of the antibacterial glass can be directly influenced, and the silver ions are reduced into the nano silver by carrying out ultraviolet irradiation on one of the toughened glass, wherein the stability of the nano silver is higher than that of the silver ions. After the antibacterial glass is prepared, the surface irradiated by the ultraviolet light deviates from the electronic equipment, namely, is contacted with the hand of a user, and is in a humid environment when contacting water, mist and sweat, and the nano silver is dissociated into silver ions under the action of water vapor so as to exert the antibacterial performance of the antibacterial glass. And silver ions in a piece of tempered glass which is not irradiated by ultraviolet light are slowly released. Therefore, the antibacterial glass is suitable for different use environments such as dry and wet environments, and the antibacterial time and the antibacterial effect of the antibacterial glass can be prolonged.
The antibacterial furnace water also comprises zinc acetate and urotropine, wherein the zinc acetate and the urotropine respectively account for the total weight of the antibacterial furnace water: 10-16% and 2-10%. Urotropin has good inhibition effect on the breeding of gram-negative bacteria. Can well make up the defect of poor inhibition effect of silver ions on gram-negative bacteria.
The antibacterial furnace water also comprises a dispersing agent which can well disperse the silver nitrate in the antibacterial furnace water, so that the silver nitrate can be uniformly formed on the toughened glass.
[ description of the drawings ]
FIG. 1 is a process flow diagram of a method of making antimicrobial glass provided in a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a tempered glass provided in a first embodiment of the present invention;
FIG. 3 is a schematic view of a layer structure of an antibacterial glass provided in a second embodiment of the present invention;
fig. 4 is a graph showing the silver ion release profile of the antibacterial glass obtained in the second example of the present invention.
Description of reference numerals:
10. tempering the glass; 20. antibacterial glass; 201. a first glass layer; 202. a second glass layer; 203. an anti-ultraviolet layer.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a first embodiment of the present invention provides a method for preparing antibacterial glass, which includes the following steps:
s1, providing two pieces of glass to be processed, wherein the glass to be processed comprises sodium ions, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass;
s2, providing tempering furnace water containing potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange the sodium ions, and taking out and cooling to obtain two pieces of tempered glass;
s3, providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing the two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the two pieces of toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and
and S4, carrying out ultraviolet irradiation on one piece of toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass.
In the step S1, the glass to be processed is glass prepared by a conventional process, and has no antibacterial property. The main components of the composition comprise: silicates, oxides, quartz, etc. Wherein the silicate comprises sodium silicate Na2SiO3, calcium silicate CaSiO3 and the like. The oxides include calcium oxide CaO, silicon dioxide SiO2, sodium oxide Na2O, and the like. In general, materials such as sodium carbonate Na2CO3, potassium carbonate K2CO3 and the like are also included.
In step S1, the two sheets of glass to be processed are preheated to obtain two sheets of pretreated glass, the preheating temperature range being: 300 ℃ to 400 ℃. Optionally, the preheating temperature may also be: 310 ℃, 320 ℃, 330 ℃, 340 ℃, 360 ℃, 380 ℃ and 390 ℃. After the glass to be processed is preheated, the glass to be processed is in a softened state, and ions in substances contained in the glass to be processed are in a movable state.
In some embodiments, the preheating time is: 2-3 h. Optionally, the time may also be: 2.4h, 2.5h, 2.8h and 2.9 h.
In step S2, tempering furnace water containing potassium ions is provided, the two pieces of pre-treated glass are immersed in the tempering furnace water so that the potassium ions exchange the sodium ions, and then taken out to be cooled to obtain two pieces of tempered glass.
The tempering furnace water contains potassium ions, and the potassium ions are mainly provided by potassium salts. Such as potassium nitrate, potassium sulfate, etc. The tempering furnace water is generally obtained by heating a substance containing potassium ions to a molten state. The typical heating temperatures are: 350 ℃ and 400 ℃. The temperature can also be: 360 ℃, 370 ℃, 380 ℃ and 390 ℃.
The two pieces of pretreated glass obtained in step S1 were immersed in the tempering furnace water so that the potassium ions exchanged sodium ions in the pretreated glass. During the exchange process, it is the potassium ions that displace a portion of the sodium ions. Optionally, in this step, the two pieces of pretreated glass are immersed in the tempering furnace water for the following time: 2-3 h. Optionally, the time may also be: 2.2h, 2.4h, 2.6h and 2.8 h. When the potassium ions exchange sodium ions, and after the potassium ions are taken out and cooled, the radius of the potassium ions is larger than that of the sodium ions, so that the glass to be processed has a good toughening effect.
In the above step S3, antibacterial furnace water including silver ions is provided, the two pieces of tempered glass are immersed in the antibacterial furnace water so that the silver ions are exchanged with potassium ions, and then taken out and an ultraviolet-resistant layer is formed on the surface of one piece of tempered glass, and the other piece of tempered glass is hot-pressed on the ultraviolet-resistant layer.
In the step, the antibacterial furnace water comprises silver ions which are mainly provided by silver salts such as silver nitrate, silver sulfate and the like, wherein the solution concentration of the silver ions is 0.01-0.1mg/m L, optionally, the solution concentration can also be 0.02mg/m L, 0.04mg/m L, 0.06mg/m L and 0.08mg/m L.
In some other embodiments, the temperature of the antimicrobial furnace water is maintained at 350-. Optionally, the temperature may also be: 360 ℃, 370 ℃, 380 ℃ and 390 ℃. The time for immersing in the antibacterial furnace water is as follows: 2-3 h. Optionally, the time may also be: 2.2h, 2.4h, 2.6h and 2.8 h.
In some other embodiments, the antimicrobial furnace water further comprises zinc acetate and urotropin, wherein the urotropin is hexamethylenetetramine. The zinc acetate and the urotropine respectively account for the total weight of the antibacterial furnace water: 10-16% and 2-10%. Optionally, the weight of urotropine in the antibacterial furnace water can be 3%, 5%, 7%, 8% and 9%. A small amount of urotropin is added into the antibacterial furnace water, and the urotropin has a good inhibition effect on the breeding of gram-negative bacteria. Can well make up the defect of poor inhibition effect of silver ions on gram-negative bacteria.
Optionally, the antibacterial furnace water further comprises a dispersing agent, and the dispersing agent can well disperse silver nitrate in the antibacterial furnace water, so that the silver nitrate can be uniformly formed on the toughened glass. Alternatively, the dispersant includes triethanolamine, polyethylene glycol, polyvinylpyrrolidone, aniline, and sodium formaldehyde sulfonate.
Optionally, in some specific embodiments, the mass percentage of the dispersant in the antibacterial furnace water is: 1 to 3 percent. Optionally, the mass percentages may also be: 1.5 percent and 2.5 percent.
In some embodiments, the antibacterial furnace water is prepared as follows:
mixing zinc acetate and urotropine, adding the mixture into deionized water which is 40-80 times of the weight of the zinc acetate and the urotropine, uniformly stirring to obtain a solution a, then pouring a dispersing agent into the solution a, uniformly stirring, then pouring a silver ion solution, uniformly stirring, and simultaneously heating to 350-400 ℃ to obtain the antibacterial furnace water. Optionally, after the tempered glass is put into the antibacterial furnace water, the antibacterial furnace water is continuously heated to maintain the temperature range thereof. Optionally, in order to avoid the temperature from being too high in the heating process, a temperature detector is installed in the antibacterial furnace water, so that the problem that the quality of the prepared antibacterial glass is affected due to decomposition of silver nitrate caused by the too high temperature is avoided.
In step S3, after the toughened glass is put in the antibacterial furnace water so that the silver ions and the potassium ions are exchanged, the toughened glass soaked in the antibacterial furnace water is taken out and the ultraviolet-resistant layer is formed on the surface of one piece of toughened glass, and the other piece of toughened glass is hot-pressed on the ultraviolet-resistant layer.
Optionally, an ultraviolet-resistant layer is formed on the surface of the tempered glass while the tempered glass is hot, and the forming mode comprises coating or spraying. The thickness of the ultraviolet-resistant layer is as follows: 300-. Optionally, the thickness of the uv-resistant layer may also be: 320um, 340um, 360um, 380um, 400um, 420um, 440 um. The anti ultraviolet layer mainly can play the effect of short-lived anti ultraviolet can, therefore the anti ultraviolet layer need be as thin as possible the setting, avoid influencing two toughened glass's coincide effect.
Referring to fig. 2, the antimicrobial glass 10 includes two opposite main surfaces 101 and a side surface 102 connecting the two main surfaces 101. An ultraviolet resistant layer is formed on one of the major surfaces 101. Wherein the main surface 101 corresponds to a display screen of the electronic device.
In this step, after taking out two toughened glass from antibiotic stove aquatic, need accomplish the setting of anti ultraviolet layer within half a minute, the in-process of avoiding forming anti ultraviolet layer that like this can be fine, the toughened glass sclerosis can't carry out fine integration with two toughened glass.
Alternatively, in order to well avoid hardening of the tempered glass, the taken out tempered glass may be placed in a thermostatic chamber, in which a uv-resistant layer is formed. The two pieces of toughened glass are attached to the toughened glass still in a softened manner at the temperature of taking the toughened glass out of the antibacterial furnace water, so that the efficiency can be well improved, and the resources are saved.
Of course, in some other embodiments, if the tempered glass is taken out from the antibacterial furnace water and is cooled, the heating device may be used to further heat and soften the tempered glass and then the tempered glass and the antibacterial furnace water are hot-pressed and attached to each other, so that the two pieces of tempered glass are pressed together to form the antibacterial glass.
In the above step S4, one of the pieces of tempered glass is irradiated with ultraviolet light so that silver ions are reduced to nano silver to obtain the antibacterial glass.
When ultraviolet light irradiation is carried out, the ultraviolet light is over against the main surface 101 of one piece of toughened glass, so that reduction reaction of silver ions in the piece of toughened glass can be well ensured, and nano silver is generated. And the other piece of toughened glass is not irradiated by ultraviolet light under the blocking of the ultraviolet-resistant layer, and silver ions can not undergo a reduction reaction and still exist in the form of silver ions.
Alternatively, in some embodiments, the time of the ultraviolet light irradiation is 10 to 30 min. Optionally, the time may also be: 12min, 18min, 20min, 23min and 28 min.
The power of the ultraviolet light is 300-400W, and the wavelength is 350-450 nm. Optionally, the power may also be: 320W, 350W, 370W and 390W. The wavelength may also be: 370nm, 390nm and 420 nm.
Optionally, in some specific embodiments, the uv-resistant layer includes the following components and corresponding weight percentages:
high-molecular polyurethane resin: 40-70 parts of;
nano zinc oxide slurry: 20-35;
coating auxiliary agent: 1-4.
Generally, silver ions are easily oxidized and deteriorated when being subjected to ultraviolet irradiation, chemical interference and other factors. This directly affects the antibacterial properties of the antibacterial glass.
Through ultraviolet irradiation on one piece of toughened glass, the silver ions are reduced into nano silver, and the stability of the nano silver is higher than that of the silver ions. After the antibacterial glass is prepared, one side irradiated by ultraviolet light deviates from the electronic equipment, namely is in contact with the hand of a user, and when the side is in a humid environment when contacting water, mist and sweat, the nano silver is dissociated into silver ions under the action of water vapor. Thereby exerting its antibacterial property. And silver ions in a piece of tempered glass which is not irradiated by ultraviolet light are slowly released. Therefore, the antibacterial glass is suitable for different use environments such as dry and wet environments, and the antibacterial time and the antibacterial effect of the antibacterial glass can be prolonged.
Referring to fig. 3, a second embodiment of the present invention provides an antibacterial glass 20, and the antibacterial glass 20 is prepared by the preparation method provided in the first embodiment. The ultraviolet-resistant glass comprises a first glass layer 201, an ultraviolet-resistant layer 202 and a second glass layer 202 which are sequentially stacked, wherein the first glass layer 201 comprises nano silver, and the second glass layer 202 comprises silver ions. The first glass layer 201 and the second glass layer 202 are obtained by processing two pieces of glass to be processed by the preparation method of the antibacterial glass provided in the first embodiment and further processing the two pieces of glass by corresponding processing steps.
Referring to fig. 4, the prepared antibacterial glass 20 is tested for slow release of silver ions, and whether the released silver ions achieve the bactericidal effect without affecting the health of the human body is determined.
The specific operation is that the antibacterial glass 20 is placed in water, the antibacterial property of the antibacterial glass 20 is related to the release of Ag +, the minimum bactericidal concentration of the Ag + is 0.1ug/m L, and the toxic concentration to human cells is 1.6ug/m L, so the diluted released Ag + concentration is between 0.1ug/m L, which can play a role in sterilization and does not damage the cells.
As can be seen from FIG. 4, within 1.5h, Ag + is released rapidly, and is released slowly within 1.5-3h, and after 3h, the Ag + concentration is basically in a saturated state, the Ag + concentration detected in the experiment is between 0.1-1.6ug/m L, which proves that the released Ag + can play a role in sterilization and does not damage human health.
Compared with the prior art, the method comprises the steps of providing two pieces of glass to be processed, wherein the glass to be processed comprises sodium ions, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass; providing tempering furnace water, wherein the tempering furnace water contains potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange the sodium ions, and then taking out and cooling to obtain two pieces of tempered glass; providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing the two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the two pieces of toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and carrying out ultraviolet irradiation on one of the toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass, in the process of preparing the antibacterial glass, carrying out ultraviolet irradiation on one surface of the toughened glass to reduce the silver ions into the nano silver in a manner of laminating two pieces of glass to be processed in a hot pressing manner, and arranging an ultraviolet-resistant layer between the two pieces of glass to be processed, after the antibacterial furnace is soaked in water, wherein the silver ions are generally subjected to ultraviolet irradiation, and factors such as chemical substance interference can easily cause the silver ions to be oxidized and deteriorated, so that the antibacterial performance of the antibacterial glass can be directly influenced, and the silver ions are reduced into the nano silver by carrying out ultraviolet irradiation on one of the toughened glass, wherein the stability of the nano silver is higher than that of the silver ions. After the antibacterial glass is prepared, the surface irradiated by the ultraviolet light deviates from the electronic equipment, namely, is contacted with the hand of a user, and is in a humid environment when contacting water, mist and sweat, and the nano silver is dissociated into silver ions under the action of water vapor so as to exert the antibacterial performance of the antibacterial glass. And silver ions in a piece of tempered glass which is not irradiated by ultraviolet light are slowly released. Therefore, the antibacterial glass is suitable for different use environments such as dry and wet environments, and the antibacterial time and the antibacterial effect of the antibacterial glass can be prolonged.
The antibacterial furnace water also comprises zinc acetate and urotropine, wherein the zinc acetate and the urotropine respectively account for the total weight of the antibacterial furnace water: 10-16% and 2-10%. Urotropin has good inhibition effect on the breeding of gram-negative bacteria. Can well make up the defect of poor inhibition effect of silver ions on gram-negative bacteria.
The antibacterial furnace water also comprises a dispersing agent which can well disperse the silver nitrate in the antibacterial furnace water, so that the silver nitrate can be uniformly formed on the toughened glass.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The preparation method of the antibacterial glass is characterized by comprising the following steps: the method comprises the following steps:
s1, providing two pieces of glass to be processed, wherein the glass to be processed comprises sodium ions, and preheating the two pieces of glass to be processed to obtain two pieces of pretreated glass;
s2, providing tempering furnace water containing potassium ions, immersing the two pieces of pretreated glass into the tempering furnace water to enable the potassium ions to exchange the sodium ions, and taking out and cooling to obtain two pieces of tempered glass;
s3, providing antibacterial furnace water, wherein the antibacterial furnace water comprises silver ions, immersing the two pieces of toughened glass into the antibacterial furnace water to exchange the silver ions with potassium ions, taking out the two pieces of toughened glass and forming an anti-ultraviolet layer on the surface of one piece of toughened glass, and hot-pressing the other piece of toughened glass on the anti-ultraviolet layer; and
and S4, carrying out ultraviolet irradiation on one piece of toughened glass to reduce silver ions into nano silver so as to obtain the antibacterial glass.
2. The method for producing an antibacterial glass according to claim 1, characterized in that: the antibacterial furnace water also comprises zinc acetate and urotropine, wherein the zinc acetate and the urotropine respectively account for the total weight of the antibacterial furnace water: 10-16% and 2-10%.
3. The method for producing an antibacterial glass according to claim 2, characterized in that: the antibacterial furnace water also comprises a dispersant.
4. The method for producing an antibacterial glass according to claim 3, characterized in that: the preparation process of the antibacterial furnace water comprises the following steps: mixing zinc acetate and urotropine, adding the mixture into deionized water 40-80 times of the weight of the zinc acetate and the urotropine, uniformly stirring to obtain solution a, and then sequentially adding a dispersing agent and a silver ion solution into the solution a.
5. The method for preparing the antibacterial glass according to claim 3, wherein the concentration of the silver ion solution in the antibacterial furnace water is 0.01-0.1mg/m L.
6. The method for producing an antibacterial glass according to claim 1, characterized in that: in the step S5, the ultraviolet irradiation time is 10-30 min.
7. The method for producing an antibacterial glass according to claim 1, characterized in that: the power of the ultraviolet light is 300-400W, and the wavelength is 350-450 nm.
8. The method for producing an antibacterial glass according to claim 1, characterized in that: in the above step S3, the ultraviolet-resistant layer is formed by coating or spraying.
9. The method for producing an antibacterial glass according to claim 1, characterized in that: the ultraviolet-resistant layer comprises the following components in percentage by weight:
high-molecular polyurethane resin: 40-70 parts of;
nano zinc oxide slurry: 20-35;
coating auxiliary agent: 1-4.
10. An antibacterial glass characterized in that: the glass is prepared by the method of any one of claims 1-9 and comprises a first glass layer, an ultraviolet resistant layer and a second glass layer which are sequentially arranged in an overlapping mode, wherein the first glass layer comprises nano silver, and the second glass layer comprises silver ions.
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