An energy-saving and healthy glass and its preparation method

Abstract

This invention discloses an energy-saving and healthy glass, belonging to the field of glass product technology. The energy-saving and healthy glass comprises a functional layer formed by an inorganic functional oil-based coating and a glass substrate. The inorganic functional oil-based coating, by weight, comprises 8-30 parts modified SiO2, 2-10 parts LiNbO3, 2-8 parts Al2O3, 5-12 parts CaF2, 10-20 parts rare earth boride, 0.4-1 part dispersant, 0.2-0.5 parts defoamer, 0.2-1 part clarifying agent, 3-6 parts negative oxygen ion initiator, and 25-70 parts solvent. Simultaneously, this invention also provides a method for preparing the energy-saving and healthy glass, which is simple to operate and has low preparation cost. Without affecting the light transmittance of the glass, it ensures the energy-saving and healthy glass's effects of UV protection, infrared protection, antibacterial and bactericidal properties, and chemical corrosion resistance. The transmittance of ultraviolet and infrared rays is less than 5%, while the transmittance of visible light can reach over 70%.

Description

Technical Field

[0001] This invention relates to the field of glass product technology, specifically to an energy-saving and healthy glass and its preparation method. Background Technology

[0002] Glass is an amorphous inorganic non-metallic material, generally made from a variety of inorganic minerals and a small amount of auxiliary raw materials. It has the characteristics of being transparent, hard, high-density, thermally stable, and recyclable, and is widely used in construction, automobiles, decoration, medical, and household products.

[0003] Building energy consumption ranks first among my country's energy consumption categories. Glass energy consumption accounts for 50% of total building energy consumption, and the glass production process consumes a large amount of energy resources, making it a major source of carbon emissions. Due to accelerated industrialization and urbanization, urban infrared and ultraviolet radiation levels have increased, and prolonged exposure can damage the skin and eyes.

[0004] In recent years, the glass industry has developed energy-saving glass and Low-E radiation-shielding glass to address energy consumption and the hazards of ultraviolet radiation. Low-E glass is generally produced by creating functional film glass from a base glass sheet using high-temperature vapor deposition or magnetron sputtering, which consumes significant energy. Alternatively, a radiation-shielding coating can be applied to the glass to give it radiation-shielding properties; however, this coating is prone to peeling or blistering, affecting the radiation-shielding effect and lifespan, as well as impacting the glass's transparency to some extent. Furthermore, Low-E glass typically suffers from light pollution and poor aging resistance.

[0005] With societal development and increased environmental awareness, higher demands are being placed on green buildings and energy-efficient glass. Negative ions, also known as "vitamins" of the air, are negatively charged gaseous ions that offer numerous positive benefits to the human body. They possess functions such as antibacterial and bactericidal properties, dust and odor removal, enhanced immunity, improved metabolism, and neutralization of positive charges. They can also absorb smoke, dust, and impurities from the air, neutralize static electricity and electronic radiation, thus freshening the air and reducing radiation. Negative ions, or negative oxygen ions, provide a technological means to improve the health, ecology, and antibacterial properties of enclosed urban environments. However, negative ions, or negative oxygen ions, have high reactivity, making them somewhat unstable in glass manufacturing and prone to uneven distribution, which can easily affect the performance and quality of the glass. Therefore, the market urgently needs an energy-efficient and healthy glass to address these issues. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention designs an energy-saving and healthy glass with features such as protection against ultraviolet and infrared rays, and antibacterial and bacteriostatic properties. Furthermore, this invention provides a method for preparing the energy-saving and healthy glass, which is simple to operate and low in cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution to address the technical problem:

[0008] On one hand, the present invention designs an inorganic functional oil-based coating, which, by mass parts, comprises 8-30 parts modified SiO2, 2-10 parts LiNbO3, 2-8 parts Al2O3, 5-12 parts CaF2, 10-20 parts rare earth boride, 0.4-1 parts dispersant, 0.2-0.5 parts defoamer, 0.2-1 parts clarifying agent, 3-6 parts negative oxygen ion initiator, and 25-70 parts solvent.

[0009] Preferably, by weight, the energy-saving and healthy glass comprises 15 parts modified SiO2, 2 parts LiNbO3, 8 parts Al2O3, 8.6 parts CaF2, 20 parts rare earth boride, 0.4 parts clarifying agent, 4 parts negative oxygen ion initiator, and 42 parts solvent.

[0010] Preferably, the rare earth boride is LaB6.

[0011] Preferably, the clarifying agent is one or more of As2O3, KNO3, and NaNO3.

[0012] Preferably, the negative oxygen ion initiator comprises modified nano-TiO2, nano-negative oxygen ion powder, and solvent, wherein the ratio of modified nano-TiO2, nano-negative oxygen ion powder, and solvent is (0.5-1.5):(1-4):(2-7).

[0013] More preferably, the negative oxygen ion initiator comprises modified nano-TiO2, nano-negative oxygen ion powder, and a solvent ratio of 1:2:5.

[0014] Preferably, the solvent is one or more selected from ethanol, propylene glycol methyl ether acetate, ethyl acetate, dipropylene glycol dimethyl ether, butyl acetate, isoparaffin, diethylene glycol dibutyl ether, N-methylpyrrolidone, and 3-methoxy-3-methyl-butanol.

[0015] On the other hand, this aspect provides an energy-saving and healthy glass, the glass comprising a glass substrate and a functional layer sintered on the outer surface of the glass substrate, the material of the functional layer comprising an inorganic functional oil-based coating.

[0016] On the other hand, this aspect also provides a method for preparing the energy-saving and healthy glass, the method comprising:

[0017] S1. Modified SiO2, LiNbO3, Al2O3, CaF2, rare earth boride, dispersant, defoamer, clarifying agent, negative oxygen ion initiator, and solvent are stirred at 1000 r / min to 1400 r / min for 15 min to 30 min to prepare a functional oil-based coating.

[0018] S2. After cleaning the glass substrate, the functional oily coating prepared in step S1 is uniformly sprayed onto the surface of the glass substrate to form a film-forming liquid with a thickness of 0.3μm-5μm. After drying, the glass coated with inorganic functional oily coating is obtained.

[0019] S3. The coated glass dried in step S2 is subjected to calcination to remove carbon. After the calcination reaction is completed, it is annealed for 2-3 hours and the temperature is reduced to 45-55℃ to obtain energy-saving and healthy glass.

[0020] Preferably, in step S1, the negative oxygen ion initiator is prepared by mixing modified nano-TiO2, nano-negative oxygen ion powder, and solvent at 600 r / min to 900 r / min for 10 min to 20 min.

[0021] Preferably, in step S3, the melting temperature is 650℃~800℃ and the melting time is 100~500 s.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention provides an energy-saving and healthy glass, comprising modified SiO2, LiNbO3, Al2O3, CaF2, rare earth borides, dispersant, defoamer, clarifying agent, negative oxygen ion initiator, and solvent. The resulting energy-saving and healthy glass has a long service life, and while protecting against ultraviolet and infrared rays, it does not affect the transmittance of visible light. The transmittance of ultraviolet and infrared rays is less than 5%, while the transmittance of visible light can reach over 70%. Furthermore, the energy-saving and healthy glass can effectively inhibit bacteria and bacteria. When exposed to solar energy, the glass absorbs red ultraviolet energy, undergoes electron energy level transitions, and when the glass absorbs heat and becomes saturated, it undergoes reverse electron transitions, emitting light quanta and radiating far-infrared rays to both the inside and outside of the glass. At the same time, after the glass is heated, it drives the negative oxygen ion initiator to excite negative ions, promoting the ionization or electron migration of air and water vapor in the environment, releasing negative oxygen ions. This achieves the utilization of solar energy in the environment, the screening of the solar spectrum, and the release of negative oxygen ions in the air. The entire process does not use any additional energy supply devices, achieving self-environmental protection capabilities. Moreover, due to the long-term effectiveness of solar energy and the "film-free" nature of the molten glass, a long-term internal circulation mechanism is ensured, reducing the use of artificial lighting and air conditioning, thereby achieving the purpose of energy saving, antibacterial and bacteria-resistant properties.

[0024] The present invention also provides a method for preparing the energy-saving and healthy glass, which adopts high-temperature melting and carbonization to remove the film, improves optical performance, enhances the chemical corrosion resistance of the glass surface, enabling it to better resist the erosion of chemicals such as acids and alkalis, and increases the adhesion and friction of the glass surface, which is beneficial for subsequent processing and treatment. The method is simple to operate, low in cost, suitable for large-scale industrial production, and conducive to promoting the application of green buildings in urban construction.

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Unless otherwise specified, the experimental methods used in the following examples are conventional methods; the materials and reagents used are commercially available unless otherwise specified.

[0027] Example 1: An energy-saving and healthy glass

[0028] I. The energy-saving and healthy glass is made by forming a sintered layer on a glass substrate using an inorganic functional oil-based coating through a melting process. The inorganic functional oil-based coating includes modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride (powder), dispersant, defoamer, clarifying agent, negative ion initiator, and solvent. The rare earth boride is LaB6; the solvent is ethyl acetate; the dispersant is sodium dodecyl sulfate; the defoamer is methyl silicone oil; and the clarifying agent is As2O3.

[0029] The negative oxygen ion initiator is made from modified nano-TiO2, nano-negative oxygen ion powder, and acetone in a mass ratio of 1:2:5.

[0030] The specific formulation of the inorganic functional oil-based coating for the energy-saving and healthy glass is shown in Table 1 below:

[0031] Table 1. Formulation of Inorganic Functional Oil-Based Coatings for Energy-Saving and Healthy Glass

[0032]

[0033] II. This embodiment also provides a method for preparing the energy-saving and healthy glass, specifically including:

[0034] 1. Preparation of modified SiO2 and modified nano TiO2 (coupling agent modification method)

[0035] 50g of SiO2 powder was added to 150mL of anhydrous ethanol and stirred to disperse. Then, KH-570 (10% of the mass of SiO2) was added, the temperature was raised to 60℃ and the reaction was carried out for 6 hours. After the reaction was complete, the mixture was cooled, washed, and dried at 120℃ to obtain modified SiO2.

[0036] 38g of nano-TiO2 powder was added to 120mL of anhydrous ethanol and stirred to disperse. Then, KH-570 (KH-570 was used at 15% of the mass of nano-TiO2) was added, the temperature was raised to 75℃ and the reaction was carried out for 3h. After the reaction was complete, the mixture was cooled, washed, and dried at 120℃ to obtain modified nano-TiO2.

[0037] 2. Preparation of Inorganic Functional Oil-Based Coatings

[0038] (1) At room temperature, the modified nano TiO2, nano negative oxygen ion powder and ethyl acetate are mixed in a mass ratio of 1:2:5 and stirred at 800 r / min for 15 min to obtain the negative oxygen ion initiator.

[0039] (2) Modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride, dispersant, defoamer, clarifying agent, solvent, clarifying agent and negative oxygen ion initiator are put into a mixing tank according to the formula table and stirred at 1200 r / min for 20 min to obtain inorganic functional oil coating.

[0040] 3. Select a 5mm glass substrate and clean it with deionized water. Then, uniformly spray the inorganic functional oil-based coating prepared above onto the surface of the glass substrate. The thickness of the film-forming liquid is 3μm. Then, allow the glass substrate to dry naturally to form glass coated with inorganic functional oil-based coating.

[0041] 4. Establishment and optimization of high-temperature melting and annealing conditions

[0042] The coated glass dried in step 3 is then decarburized by melting at 700℃ for 300s. After decarburization, the glass is placed in an annealing chamber for 2 hours to remove surface stress, and the temperature is reduced to 50℃ to obtain energy-saving and healthy glass.

[0043] Example 2: An energy-saving and healthy glass

[0044] The energy-saving and healthy glass comprises modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride (powder), dispersant, defoamer, clarifying agent, negative oxygen ion initiator, and solvent. The rare earth boride is ScB5; the solvent is ethanol; the dispersant is polymethyl methacrylate; the defoamer is methyl silicone oil; and the clarifying agent is As2O3.

[0045] The negative oxygen ion initiator is made from modified nano TiO2, nano negative oxygen ion powder, and ethyl acetate in a mass ratio of 0.5:4:5.

[0046] The specific formulation of the inorganic functional oil-based coating for the energy-saving and healthy glass is shown in Table 2 below:

[0047] Table 2 Formulation of Inorganic Functional Oil-Based Coatings for Energy-Saving and Healthy Glass

[0048]

[0049] II. The preparation method of the energy-saving and healthy glass is the same as that in Example 1, except that steps 2 and 4 are different.

[0050] 2. Preparation of Inorganic Functional Oil-Based Coatings

[0051] (1) At room temperature, the modified nano TiO2, nano negative oxygen ion powder and ethyl acetate are mixed according to the mass ratio of Example 2 and stirred at 900 r / min for 20 min to obtain the negative oxygen ion initiator.

[0052] (2) Add modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride, dispersant, defoamer, clarifying agent, solvent, clarifying agent and negative oxygen ion initiator into a mixing tank according to the formula table, and stir at 1000 r / min for 30 min to obtain inorganic functional oil-based coating.

[0053] 4. Establishment and optimization of high-temperature melting and annealing conditions

[0054] The coated glass dried in step 3 is then decarburized by melting at 600℃ for 500s. After decarburization, the glass is placed in an annealing chamber for 3 hours to remove surface stress. The temperature is then reduced to 55℃ to obtain energy-saving and healthy glass.

[0055] Example 3: An energy-saving and healthy glass

[0056] The energy-saving and healthy glass components include modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride (powder), dispersant, defoamer, clarifying agent, negative oxygen ion initiator, and solvent. The rare earth boride is ScB5; the solvent is acetone; the dispersant is sodium dodecyl sulfate; the defoamer is polydimethylsiloxane; and the clarifying agent is As2O3.

[0057] The negative oxygen ion initiator is made from modified nano-TiO2, nano-negative oxygen ion powder, and acetone in a mass ratio of 1.5:1:5. The specific formula for the inorganic functional oil-based coating of the energy-saving and healthy glass is shown in Table 3 below.

[0058] Table 3. Formulation of Inorganic Functional Oil-Based Coatings for Energy-Saving and Healthy Glass

[0059]

[0060] II. The preparation method of the energy-saving and healthy glass is the same as that in Example 1, except that steps 2 and 4 are different.

[0061] 2. Preparation of Inorganic Functional Oil-Based Coatings

[0062] (1) At room temperature, the modified nano TiO2, nano negative oxygen ion powder and acetone are mixed according to the mass ratio of Example 3 and stirred at 600 r / min for 10 min to obtain the negative oxygen ion initiator.

[0063] (2) Add modified SiO2, lithium niobate (LiNbO3), Al2O3, CaF2, rare earth boride, dispersant, defoamer, clarifying agent, solvent, clarifying agent and negative oxygen ion initiator into a mixing tank according to the formula table, and stir at 1400 r / min for 15 min to obtain inorganic functional oil coating.

[0064] 4. Establishment and optimization of high-temperature melting and annealing conditions

[0065] The coated glass dried in step 3 is then melted to remove carbon at a temperature of 800℃ for 100 seconds. After decarburization, the glass is placed in an annealing chamber for 2 hours to remove surface stress, and the temperature is lowered to 45℃ to obtain energy-saving and healthy glass.

[0066] Comparative Example 1: An Energy-Saving and Healthy Glass

[0067] The difference between Comparative Example 1 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass uses unmodified SiO2, while everything else is the same.

[0068] Comparative Example 2: An Energy-Saving and Healthy Glass

[0069] The difference between Comparative Example 2 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass did not contain modified SiO2, but all other aspects were the same.

[0070] Comparative Example 3: An Energy-Saving and Healthy Glass

[0071] The difference between Comparative Example 3 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass did not contain LiNbO3, but all other aspects were the same.

[0072] Comparative Example 4: An Energy-Saving and Healthy Glass

[0073] The difference between Comparative Example 4 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass does not contain Al2O3 and CaF2, but all other aspects are the same.

[0074] Comparative Example 5: An Energy-Saving and Healthy Glass

[0075] The difference between Comparative Example 5 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass does not contain rare earth borides, but all other aspects are the same.

[0076] Comparative Example 6: An Energy-Saving and Healthy Glass

[0077] The difference between Comparative Example 6 and Example 1 is that the inorganic functional oil-based coating of the energy-saving and healthy glass does not contain a negative oxygen ion initiator, but all other aspects are the same.

[0078] Comparative Example 7: An Energy-Saving and Healthy Glass

[0079] The difference between Comparative Example 7 and Example 1 is that the inorganic functional oil-based coating formulation of the energy-saving and healthy glass is different, but everything else is the same.

[0080] The inorganic functional oil-based coating comprises, by weight, 7 parts modified SiO2, 12 parts LiNbO3, 9 parts Al2O3, 4 parts CaF2, 25 parts rare earth boride, 1.5 parts dispersant, 0.6 parts defoamer, 1.5 parts clarifying agent, 2 parts negative oxygen ion initiator, and 75 parts solvent.

[0081] The negative oxygen ion initiator is prepared by mixing modified nano-TiO2, nano-negative oxygen ion powder and solvent in a mass ratio of 0.4:5:8.

[0082] Comparative Example 8: An Energy-Saving and Healthy Glass

[0083] The difference between Comparative Example 8 and Example 1 is that the inorganic functional oil-based coating formulation of the energy-saving and healthy glass is different, but everything else is the same.

[0084] The inorganic functional oil-based coating comprises, by weight, 35 parts modified SiO2, 1 part LiNbO3, 1 part Al2O3, 13 parts CaF2, 9.5 parts rare earth boride, 0.3 parts dispersant, 0.1 parts defoamer, 0.1 parts clarifying agent, 7 parts negative oxygen ion initiator, and 34 parts solvent.

[0085] The negative oxygen ion initiator is prepared by mixing modified nano-TiO2, nano-negative oxygen ion powder and solvent in a mass ratio of 2:1:2.

[0086] Comparative Example 9: An Energy-Saving and Healthy Glass

[0087] The difference between Comparative Example 9 and Example 1 lies in the formulation of the inorganic functional oil-based coating and the glass preparation method; all other aspects are the same. The specific formulation of the inorganic functional oil-based coating for the energy-saving and healthy glass is shown in Table 4 below:

[0088] Table 4 Energy-saving and Healthy Glass Formulation Table

[0089]

[0090] The energy-saving and healthy glass is prepared using the float glass method, specifically including:

[0091] 1. Mix the raw material components in Table 4 evenly and disperse them by ultrasonic high speed for 1 hour; then put the glass into the furnace and heat it for 7 hours. When it reaches 1700℃, it becomes molten glass. Flow the molten glass into the tin bath and float on the molten tin metal. At this time, the temperature is 1000℃. Then a glass ribbon is formed. The glass and tin have different viscosity and will not mix.

[0092] 2. Glass cooling: At 600℃, the glass is removed from the tin bath and then placed in the annealing chamber for 2 hours to reduce the temperature of the glass to 50℃ to obtain annealed glass, thus producing energy-saving and healthy glass.

[0093] Experimental Example 1: Performance Testing of Energy-Saving and Healthy Glass

[0094] Optical transmittance, acid resistance, negative oxygen ion concentration, and weather aging resistance were tested on the energy-saving and healthy glass and ordinary glass (blank group) prepared in Examples 1-3 and Comparative Examples 1-7, respectively. Ordinary glass served as the blank control group.

[0095] 1. Optical transmittance test

[0096] According to GB / T 2680-2021 "Determination of Visible Light Transmittance, Direct Solar Transmittance, Total Solar Transmittance, Ultraviolet Transmittance and Related Window Glass Parameters of Architectural Glass", optical transmittance tests were conducted on energy-saving and healthy glass and ordinary glass. Visible light transmittance was measured in the wavelength range of 380–780 nm; ultraviolet transmittance was measured in the wavelength range of 300–380 nm; and total infrared transmittance was measured in the wavelength range of 780–2500 nm.

[0097] 2. Acid resistance test

[0098] The acid resistance test was conducted according to GB / T 15728-2021 "Glass resistance to boiling hydrochloric acid erosion test method and classification".

[0099] Results determination: ranging from low to high corrosivity, it is divided into four levels: H1, H2, H3, and H4.

[0100] 3. Negative oxygen ion test

[0101] According to JC / T 2110—2012 "Indoor Air Ion Concentration Test Method", the negative ion concentration in urban houses with energy-saving and healthy glass and urban houses with ordinary glass were tested respectively.

[0102] Weathering resistance test (UV aging resistance test)

[0103] The glass was placed in an ultraviolet irradiation chamber with an irradiance of 0.89 W (m²). 2 ( / nm), center wavelength 340nm, irradiated for 96 hours. After the test, observe and compare the color difference between the glass and the unirradiated glass.

[0104] Result determination: If the glass shows obvious yellowing or cracking, it fails; if the yellowing or cracking is not obvious, it passes.

[0105] In summary, the test results for optical transmittance, acid resistance, negative oxygen ion concentration, and weathering resistance are shown in Table 5.

[0106] Table 5: Performance Test Results

[0107]

[0108] As shown in Table 5, the optical transmittance, ultraviolet transmittance, and infrared transmittance of the glasses prepared in Examples 1-3 are generally superior to those in Comparative Examples 1-7. Specifically, the transmittance of visible light is greater than 70%, while the transmittance of ultraviolet light and infrared light is less than 5%, indicating that the glass prepared by this invention can effectively reduce ultraviolet and infrared transmittance, thereby achieving the purpose of radiation protection. In particular, the glass prepared in Example 1 has an acid resistance of H1, exhibits good chemical corrosion resistance and weather resistance, and releases a high concentration of negative oxygen ions, making it suitable for urban construction.

[0109] Comparing Comparative Examples 1 and 2 with Example 1, it can be seen that the glass prepared by Comparative Examples 1 and 2 using unmodified SiO2 or without the addition of modified SiO2 has poor acid resistance and also affects the release of negative oxygen ions. This is because the SiO2 in Comparative Example 1 is an inorganic substance and does not have the ability to generate negative ions. However, it can adsorb moisture and form silicic acid, which in turn affects the electrical conductivity and microstructure of the glass surface and affects the release of negative oxygen ions to a certain extent. In contrast, the modified SiO2 in Example 1 can generate negative oxygen ions by providing electrons or interacting with oxygen molecules to promote the process of losing electrons. It can also be better dispersed in the glass, improving the uniformity and chemical stability of the glass and enhancing its weather resistance.

[0110] Comparing Comparative Examples 3 and 4 with Example 1, it can be seen that the light transmittance and stability of the glass in Example 1 are higher than those of the comparative examples, and the ultraviolet and infrared transmittance of the glass in Example 1 are much lower than those of the comparative examples.

[0111] Comparing Comparative Examples 5 and 6 with Example 1, it is evident that Comparative Examples 5 and 6, lacking the addition of rare earth borides and negative oxygen ion initiators, resulted in lower concentrations of negative oxygen ions released from the resulting glass. This is because rare earth borides possess photocatalytic activity; when irradiated by light, they can excite electrons, generating electron-hole pairs and thus producing negative oxygen ions, thereby promoting the self-cleaning and antibacterial properties of the glass. Simultaneously, the rare earth borides, along with the negative oxygen ion powder and modified nano-TiO2, synergistically promote the release of negative oxygen ions and improve the transparency of the glass. The modified nano-TiO2 also facilitates the uniform distribution of rare earth borides and negative oxygen ions within the glass substrate. During high-temperature sintering, the rare earth borides and negative oxygen ion powder can fully contact and interact, enhancing the stability and activity of the negative oxygen ions and allowing them to better fulfill their functions.

[0112] Comparing Comparative Examples 7-9 with Example 1, it can be seen that only when the modified SiO2, LiNbO3, Al2O3, CaF2, rare earth borides, dispersants, defoamers, clarifying agents, negative oxygen ion initiators, solvents, and glass preparation conditions are within a suitable range and complement each other can high-performance energy-saving and healthy glass be obtained. The glass prepared by Comparative Example 8 using conventional glass preparation methods has poorer weather resistance than that of Example 1. This is because, during the sintering process, the present invention extends the service life of the glass by carbonizing the organic matter in the coating and forming a sintered layer of inorganic matter. Moreover, compared with conventional preparation methods, high-temperature sintering only requires 650℃ to 800℃, thus reducing costs.

[0113] In summary, the energy-saving and healthy glass prepared by this invention has excellent optical transmittance. Furthermore, it releases negative oxygen ions when irradiated with infrared light. These negative oxygen ions possess strong oxidizing properties and can react with organic matter, microorganisms, and heavy metals in the environment, thereby achieving antibacterial, deodorizing, and air-purifying effects. In addition, the energy-saving glass effectively blocks the transmission of infrared and ultraviolet light, with infrared and ultraviolet transmittance both below 5%, and visible light transmittance greater than 70%. This helps stabilize indoor temperature, reduces the use of air conditioning and artificial lighting, and thus saves energy consumption. Moreover, the glass is low-cost to manufacture, simple to operate, and suitable for large-scale industrial production.

[0114] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Energy saving healthy glass characterized in that, It includes a glass substrate and a functional layer sintered on the outer surface of the glass substrate, wherein the material of the functional layer includes an inorganic functional oil-based coating. The inorganic functional oil-based coating, by weight, comprises 8-30 parts modified SiO2, 2-10 parts LiNbO3, 2-8 parts Al2O3, 5-12 parts CaF2, 10-20 parts rare earth boride, 0.4-1 parts dispersant, 0.2-0.5 parts defoamer, 0.2-1 parts clarifying agent, 3-6 parts negative oxygen ion initiator, and 25-70 parts solvent; The method for preparing the energy-saving and healthy glass includes: S1. An inorganic functional oil-based coating is prepared by mixing modified SiO2, LiNbO3, Al2O3, CaF2, rare earth boride, dispersant, defoamer, clarifying agent, negative oxygen ion initiator, and solvent at 1000 r / min to 1400 r / min for 15 min to 30 min; the preparation method of the modified SiO2 includes: adding 50 g of SiO2 powder to 150 mL of anhydrous ethanol and stirring to disperse, then adding the modifier KH-570, heating to 60 °C and reacting for 6 h, cooling and washing after the reaction is complete, and drying at 120 °C to obtain the modified SiO2, wherein the amount of KH-570 is 10% of the mass of SiO2; the negative oxygen ion initiator is prepared by mixing modified nano TiO2, nano negative oxygen ion powder, and solvent at 600 r / min to 900 r / min for 10 min to 20 min. The modified nano-TiO2 was prepared by mixing min. The preparation method of the modified nano-TiO2 includes: adding 38g of nano-TiO2 powder to 120mL of anhydrous ethanol and stirring to disperse, then adding the modifier KH-570, heating to 75℃ and reacting for 3h, cooling and washing after the reaction is complete, and drying at 120℃ to obtain modified nano-TiO2. The amount of KH-570 used is 15% of the mass of nano-TiO2. S2. After cleaning the glass substrate, the inorganic functional oil-based coating prepared in step S1 is evenly sprayed onto the surface of the glass substrate. After drying, the glass coated with the inorganic functional oil-based coating is obtained. S3. The coated glass dried in step S2 is subjected to calcination to remove carbon. After the calcination reaction is completed, it is annealed for 2-3 hours and the temperature is reduced to 45-55℃ to obtain energy-saving and healthy glass. The calcination temperature is 650℃-800℃ and the calcination time is 100-500s.

2. The energy saving health glass according to claim 1, characterized in that, The inorganic functional oil-based coating comprises, by weight, 15 parts modified SiO2, 2 parts LiNbO3, 8 parts Al2O3, 8.6 parts CaF2, 20 parts rare earth boride, 0.4 parts clarifying agent, 4 parts negative oxygen ion initiator, and 42 parts solvent.

3. The energy-saving and healthy glass according to claim 1, characterized in that, The rare earth boride is LaB6.

4. The energy-saving and healthy glass according to claim 1, characterized in that, The clarifying agent is one or more of As2O3, KNO3, and NaNO3.

5. The energy-saving and healthy glass according to claim 1, characterized in that, The negative oxygen ion initiator includes modified nano-TiO2, nano-negative oxygen ion powder, and solvent, and the mass ratio of the modified nano-TiO2, nano-negative oxygen ion powder, and solvent is (0.5-1.5):(1-4):(2-7).

6. The energy-saving and healthy glass according to claim 5, characterized in that, The mass ratio of the modified nano-TiO2, nano-negative oxygen ion powder, and solvent is 1:2:

5.

7. The energy-saving and healthy glass according to claim 1 or 5, characterized in that, The solvent is one or more of ethanol, propylene glycol methyl ether acetate, ethyl acetate, dipropylene glycol dimethyl ether, butyl acetate, acetone, diethylene glycol dibutyl ether, N-methylpyrrolidone, and 3-methoxy-3-methyl-butanol.

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