Reinforced heat insulation glass and manufacturing method thereof

Abstract

The invention relates to reinforced heat insulation glass and a manufacturing method thereof, and the reinforced heat insulation glass comprises the following components in percentage by weight: 60.0 to 85.2 weight percent of SiO2, 6.14 to 12.0 weight percent of B2O3, 6.14 to 12.0 weight percent of Na2O, 0.1 to 3.0 weight percent of Al2O3, 0.1 to 2.25 weight percent of CaO2, 0.1 to 0.6 weight percent of Fe2O3, 0.1 to 1.0 weight percent of SnO2, 0.1 to 1.0 weight percent of Sb2O3, 0.1 to 1.0 weight percent of Pr2O3, and 0.1 to 1.0 weight percent of ZrO2. Therefore, the automobile safety glass can pass the standard specification of the automobile safety glass with the thickness of 3 mm.

Description

Technical Field

[0001] The present application relates to a heat-insulating glass, in particular to a colored strengthened heat-insulating glass for automobiles. Background Art

[0002] Conventional insulating glass can generally be divided into two categories: colorless insulating glass that does not require strengthening, and tinted insulating glass that requires strengthening. The former is primarily used in film production, movie projection, slide projection, color printing, and other applications. It requires both heat rejection from the light source to protect the film and color reproduction. The latter, which focuses on infrared absorption and is therefore tinted, is primarily used in building windows in hot climates, surgical shadowless lamps, and automobile windshields, requiring enhanced safety features. This case primarily addresses improvements to the latter type of insulating glass.

[0003] Regarding the aforementioned safety data on strengthened insulating glass, such as safety glazing materials for road vehicles, the current standard in Taiwan is 10985 (R2173), which stipulates multiple quality items from thickness to flexibility.

[0004] To achieve these quality standards, conventional techniques require chemical strengthening of the glass. Examples of these strengthening methods include those described in Chinese patents CN 109843823B, CN 106316155A, CN 108473369B, CN 103827053B, CN 103842309B, CN103097315B, and CN 104736495B, or in Taiwanese patents TWI 759603B and TWI 567041B. These methods involve immersing the glass in an ion bath for ion exchange. This allows sodium ions in the glass to exchange with potassium ions in the solution, releasing the less stable sodium ions from the glass and allowing the more stable potassium ions to enter the glass surface, thereby increasing its strength.

[0005] However, during the process of chemically strengthening glass, potassium ions will also exchange ions with the thermal insulation material, causing the proportion of the thermal insulation material to be different, resulting in a decrease or loss of thermal insulation function.

[0006] In view of this, the previous technology still needs to be improved. Summary of the Invention

[0007] To solve the above and other problems, the main purpose of this application is to provide a strengthened insulating glass and a manufacturing method thereof to improve the prior art.

[0008] The purpose of this application is to provide a tempered insulating glass and a method for manufacturing the same, which can pass the specifications for automotive safety glass, such as the current Taiwan Standard 10985 (R2173), with a thickness of only 3 mm.

[0009] Another object of the present application is to provide a tempered insulating glass and a method for manufacturing the same, wherein at a thickness of 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 2000 nm is less than 40%.

[0010] Another object of the present application is to provide a tempered insulating glass and a method for manufacturing the same, wherein at a thickness of 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 1400 nm is less than 20%.

[0011] Another object of the present application is to provide a strengthened insulating glass and a method for manufacturing the same, which can maintain the original thermal insulation performance while strengthening the properties.

[0012] To achieve the aforementioned and other application objectives, the embodiments of the present application provide a tempered insulating glass, which, expressed in weight percentage (wt%), comprises: 60.0-85.2 wt% SiO2, 6.14-12.0 wt% B2O3, 6.14-12.0 wt% Na2O, 0.1-3.0 wt% Al2O3, 0.1-2.25 wt% CaO2, 0.1-0.6 wt% Fe2O3, 0.1-1.0 wt% SnO2, 0.1-1.0 wt% Sb2O3, 0.1-1.0 wt% Pr2O3, and 0.1-1.0 wt% ZrO2.

[0013] Preferably, when the thickness is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 2000 nm is less than 40%.

[0014] Preferably, it is characterized in that it contains: 60.0~85.2wt% SiO2, 8±2.5wt% B2O3, 8±2.5wt% Na2O, 1.7±1wt% Al2O3, 1.2±0.5wt% CaO2, 0.35±0.15wt% Fe2O3, 0.35±0.15wt% SnO2, 0.35±0.15wt% Sb2O3, 0.35±0.15wt% Pr2O3, and 0.35±0.15wt% ZrO2.

[0015] Preferably, when the thickness is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 1400 nm is less than 20%.

[0016] Preferably, B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3 are nanoparticles, and their outer layers are coated with a nanometer inorganic layer to form microcapsule nanoparticles with a size of less than 600 nm.

[0017] Preferably, the nano-inorganic layer comprises a ZrO2 nano-inorganic layer.

[0018] Preferably, the glass layer is formed by stacking the microcapsule nanoparticles.

[0019] To achieve the aforementioned and other application purposes, an embodiment of the present application provides a method for manufacturing strengthened insulating glass, which is used to manufacture the aforementioned strengthened insulating glass. The manufacturing method includes: providing glass raw materials with the aforementioned component ratios; freeze-grinding the glass raw materials with ultra-white silica sand, boric acid, soda ash, aluminum oxide, and sodium chloride to obtain a freeze-ground glass raw material; microencapsulating the freeze-ground glass raw material with nano-inorganic oxides to obtain a microencapsulated glass raw material; placing the microencapsulated glass raw material in a quartz crucible and placing it in a high-temperature furnace, heating it to approximately 1650°C and then holding it for approximately 210 minutes to obtain a molten glass liquid; casting the molten glass liquid onto a preheated graphite plate and placing it in a holding furnace at approximately 650°C for annealing to obtain a rough glass; coarse-grinding and polishing the rough glass to obtain a colored flat glass with a thickness of approximately 3 mm; soaking the colored flat glass in potassium nitrate molten salt for approximately 4.5 hours; and cleaning the colored flat glass to obtain the colored strengthened insulating glass.

[0020] Preferably, the freeze grinding step comprises: pre-cooling the glass raw material to about -150-180 degrees Celsius using liquid nitrogen, and freeze grinding the glass raw material while keeping the temperature low until the particle size is about 0.4 μm±0.1 μm.

[0021] Preferably, the microencapsulation step includes: taking ZrO2 nano-inorganic oxide; mixing the nano-inorganic oxide with anhydrous ethanol, placing it on a heating plate and heating it to about 50-70°C and stirring for 1 hour; then adding B2O3, Na2O, Al2O3, CaO2, Fe2O3, and SnO2 oxides and shaking for 1 hour; placing it in an 80°C oven for drying, and then placing it in a calcining furnace and heating it at 600°C for 2 hours to obtain the colored microencapsulated glass raw material.

[0022] Preferably, the tempered insulating glass has a first surface and a second surface, and a glass layer is sandwiched between the first surface and the second surface, the glass layer comprises the aforementioned composition, wherein the glass layer comprises a nanoparticle core, the nanoparticle core comprises B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3, and the nanoparticle core is coated by a nano-inorganic shell, and the two together form a microcapsule nanoparticle with a size of less than 600 nm.

[0023] In addition, the directions or similar terms described herein, such as front, back, left, right, top, bottom, inside, outside, and side, are primarily with reference to the directions in the drawings and are only used to assist in explaining and understanding the various embodiments of this application and are not intended to limit this application. In addition, the articles "a" or "the" used in reference to components or members described herein are only for simplification of description and should be interpreted in this application as including one or at least one, and the singular concept also includes the plural, unless otherwise clearly indicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The embodiments of the present application will be described with the following brief description in conjunction with the drawings:

[0025] Figure 1A is a schematic cross-sectional view of the tempered insulating glass according to an embodiment of the present application;

[0026] Figure 1B Schematic diagram of microcapsule nanoparticles according to an embodiment of the present application;

[0027] Figure 1C yes Figure 1A A magnified schematic diagram of area A;

[0028] Figure 2 is a flow chart of a method for manufacturing tempered insulating glass according to an embodiment of the present application;

[0029] Figure 3 This is an experimental diagram of the absorption rate of an embodiment of the present application;

[0030] Figure 4 This is a coordinate diagram of the optical performance of Comparative Example 1 of the present application after spectrophotometry;

[0031] Figure 5 This is a coordinate diagram of the optical performance of Example 1 of the present application after being subjected to a spectrophotometer;

[0032] Figure 6 This is a coordinate diagram of the optical performance of Example 2 of the present application after spectrophotometry;

[0033] Figure 7 This is a coordinate diagram of the optical performance of Example 3 of the present application after spectrophotometry;

[0034] Figure 8 This is a coordinate diagram of the optical performance of Example 4 of the present application after being measured by a spectrometer.

[0035] Explanation of symbols:

[0036] First surface (11)

[0037] Second surface (12)

[0038] Glass layer (20)

[0039] Nanoparticle core (21)

[0040] Nano inorganic shell (22)

[0041] Microcapsule Nanoparticles (23)

[0042] Steps S10, S20, S21, S22, S30, S31, S32, S40, S50, S60, S70 DETAILED DESCRIPTION

[0043] In order to make the above and other purposes, features and advantages of this application more clearly understood, preferred embodiments are described below in detail with reference to the accompanying drawings. Items with the same reference numerals in different drawings may be considered the same and their descriptions may be omitted.

[0044] Generally speaking, tinted glass has varying visible light and infrared transmittances. In the architectural and automotive sectors, 5mm to 6mm thicknesses are commonly used due to structural strength requirements. However, thicker glass increases cost and weight, hindering production efficiency.

[0045] The key purpose of the following embodiments of this application is to achieve the strength of a general thickness of 5-6mm with a thickness of 3mm, and pass the visible light transmittance, breakage test and impact resistance test of the current Taiwan standard 10985 for automotive safety glass.

[0046] The present embodiment provides a strengthened insulating glass, which comprises, expressed in weight percentage (wt%): 60.0-85.2 wt% SiO2, 6.14-12.0 wt% B2O3, 6.14-12.0 wt% Na2O, 0.1-3.0 wt% Al2O3, 0.1-2.25 wt% CaO2, 0.1-0.6 wt% Fe2O3, 0.1-1.0 wt% SnO2, 0.1-1.0 wt% Sb2O3, 0.1-1.0 wt% Pr2O3, and 0.1-1.0 wt% ZrO2.

[0047] Preferably, expressed in weight percentage (wt%), it comprises: 60.0~85.2wt% SiO2, 8±2.5wt% B2O3, 8±2.5wt% Na2O, 1.7±1wt% Al2O3, 1.2±0.5wt% CaO2, 0.35±0.15wt% Fe2O3, 0.35±0.15wt% SnO2, 0.35±0.15wt% Sb2O3, 0.35±0.15wt% Pr2O3, and 0.35±0.15wt% ZrO2.

[0048] Figure 1A Schematic diagram of the cross section of the tempered insulating glass of the embodiment of the present application. Figure 1A As shown, the tempered insulating glass of this embodiment has a first surface (11) and a second surface (12), and a glass layer (20) is sandwiched between the first surface (11) and the second surface (12). Expressed in terms of weight percentage (wt%), the glass layer (20) contains a composition with the aforementioned proportions, namely, 60.0-85.2 wt% of SiO2, 6.14-12.0 wt% of B2O3, 6.14-12.0 wt% of Na2O, 0.1-3.0 wt% of Al2O3, 0.1-2.25 wt% of CaO2, 0.1-0.6 wt% of Fe2O3, 0.1-1.0 wt% of SnO2, 0.1-1.0 wt% of Sb2O3, 0.1-1.0 wt% of Pr2O3, and 0.1-1.0 wt% of ZrO2. The glass layer (20) contains a plurality of microcapsule nanoparticles (23), and the microcapsule nanoparticles (23) are formed from the composition.

[0049] Figure 1B Schematic diagram of microcapsule nanoparticles according to an embodiment of the present application. Preferably, each microcapsule nanoparticle (23) comprises a nanoparticle core (21), the outer layer of the nanoparticle core (21) being coated by a nano-inorganic shell (22), and the nanoparticle core (21) and the nano-inorganic shell (22) together form a microcapsule nanoparticle (23) with a size of less than 600 nm.

[0050] Preferably, the nanoparticle core (21) comprises B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3. Preferably, the nano-inorganic shell (22) comprises a ZrO2 nano-inorganic layer. Thus, the nano-inorganic shell (22) can physically protect the chemical properties of the nanoparticle core (21) therein through its inorganic layer, so that the ions therein will not undergo ion exchange during the strengthening process, resulting in a decrease or loss of thermal insulation function.

[0051] Figure 1Cyes Figure 1A Preferably, the glass layer (20) is formed by stacking the aforementioned microcapsule nanoparticles (23). When the size is less than 600 nm, each microcapsule nanoparticle (23) can provide intermolecular forces to each other, providing an additional strengthening effect, thereby enhancing the strength of the tempered insulating glass of the present application.

[0052] Figure 2 This is a flow chart of the manufacturing method of the tempered insulating glass of the embodiment of the present application, please refer to Figure 2 As shown, this embodiment further provides a method for manufacturing the aforementioned strengthened insulating glass, the method comprising: step S10, providing glass raw materials with the aforementioned composition ratio; step S20, freeze-grinding the glass raw materials with ultra-white silica sand, boric acid, soda ash, aluminum oxide, and sodium chloride to obtain a freeze-ground glass raw material; step S30, microencapsulating the freeze-ground glass raw material with zirconium oxide to obtain a microencapsulated glass raw material; step S40, placing the microencapsulated glass raw material in a quartz crucible. The glass is placed in a high-temperature furnace, heated to approximately 1650°C, and then held at this temperature for approximately 210 minutes to obtain a molten glass liquid. In step S50, the molten glass liquid is cast onto a preheated graphite plate, and then placed in a holding furnace at approximately 650°C for annealing to obtain a rough glass. The rough glass is then roughly ground and polished to obtain a colored flat glass having a thickness of approximately 3 mm. In step S60, the colored flat glass is immersed in molten potassium nitrate for approximately 4.5 hours. In step S70, the colored flat glass is cleaned to obtain the colored strengthened insulating glass.

[0053] For example, ultra-white silica sand, boric acid, soda ash, aluminum oxide, and sodium chloride can be placed in a quartz crucible, heated to approximately 1550°C in a high-temperature furnace, and held at this temperature for approximately 150 minutes to allow for a full reaction. Next, the molten glass is cast onto a preheated graphite plate and annealed in a holding furnace at approximately 650°C. After rough grinding and polishing, the sample is obtained.

[0054] Preferably, the freeze grinding step comprises: step S21, pre-cooling the glass raw material to about -150-180 degrees Celsius using liquid nitrogen, and step S22, keeping it cool and performing freeze grinding to a particle size of about 0.4 μm±0.1 μm.

[0055] Compared with the conventional technology that can only grind to about 1um, the present application adopts the freezing grinding method to obtain a smaller particle size of about 0.4um±0.1um.

[0056] For example, an FM1801 cryo-grinding machine uses an automated liquid nitrogen filling system. A pipeline connected to a liquid nitrogen tank allows liquid nitrogen to flow into the sample chamber. The glass material in the sample chamber is now in a low-temperature environment. The glass material is pre-cooled before subsequent grinding. Grinding is performed continuously at 60 Hz for one hour, followed by freezing for one hour. This cycle is repeated four times for a total of eight hours, until the powder is ground to an average particle size of 0.3 to 0.5 μm.

[0057] Preferably, the microencapsulation step includes: step S31, taking ZrO2 nano-inorganic oxide; (S32) mixing the nano-inorganic oxide with anhydrous ethanol, placing it on a heating plate and heating it to about 50-70°C and stirring for 1 hour; then adding B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3 oxides and shaking for 1 hour; placing it in an 80°C oven for drying, and then placing it in a calcining furnace and heating it at 600°C for 2 hours to obtain the colored microencapsulated glass raw material.

[0058] To facilitate those skilled in the art to understand the present application, several embodiments and their data are listed below, and comparative explanations are provided in tables.

[0059] Example 1 (ZrO2 accounts for 0.25% of the total proportion):

[0060] Zirconium tetrachloride (Zirconium tetrachloride) was used to fabricate core-shell microcapsules using the sol-gel method. The core is composed of B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3. The shell is ZrO2, formed by hydrolysis and condensation, accounting for 0.25% of the total. This core-shell structure was then placed in a quartz crucible, heated to 1650°C in a high-temperature furnace, and held at that temperature for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 3 mm thick was obtained. This colored flat glass was then immersed in molten potassium nitrate for 4.5 hours. The resulting tempered glass was then washed and tested according to Taiwan's current standard 10985 (R2173).

[0061] Example 2 (ZrO2 accounts for 0.5% of the total proportion):

[0062] Zirconium isopropoxide isopropanol complex was used to fabricate core-shell microcapsules using the sol-gel method. The core is composed of B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3. The shell is ZrO2, formed by hydrolysis and condensation, accounting for 0.25% of the total. This core-shell structure was then placed in a quartz crucible, heated to 1650°C in a high-temperature furnace, and kept warm for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 3 mm thick was obtained. This colored flat glass was immersed in potassium nitrate molten salt for 4.5 hours. After washing, the tempered glass was obtained and tested according to Taiwan's current standard 10985 (R2173).

[0063] Example 3 (ZrO2 accounts for 0.3% of the total proportion):

[0064] Zirconium isopropoxide and zirconium tetrachloride were mixed in a 1:1 ratio and fabricated using the sol-gel method to form core-shell microcapsules. The core consisted of B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3. The shell consisted of ZrO2, formed by hydrolysis and condensation, accounting for 0.3% of the total. This core-shell structure was then placed in a quartz crucible, heated to 1650°C in a high-temperature furnace, and held at that temperature for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 3 mm thick was obtained. This colored flat glass was then immersed in molten potassium nitrate for 4.5 hours. The resulting tempered glass was then washed and tested according to Taiwan's current standard 10985 (R2173).

[0065] Example 4 (ZrO2 accounts for 0.1% of the total proportion):

[0066] Zirconium dichloride oxide was used to produce core-shell microcapsules using the sol-gel method. The core consisted of B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3. The shell was ZrO2, formed by hydrolysis and condensation, accounting for 0.1% of the total. This core-shell structure was then placed in a quartz crucible, heated to 1650°C in a high-temperature furnace, and kept warm for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample with a thickness of approximately 3 mm was obtained. This colored flat glass was immersed in potassium nitrate molten salt for 4.5 hours. After washing, the tempered glass was obtained and tested according to Taiwan's current standard 10985 (R2173).

[0067] Table 1 is a table of the composition contents of each embodiment.

[0068]

[0069]

[0070] Table 1

[0071] In addition, to facilitate those with general knowledge in this field to more quickly grasp this embodiment, the chemical strengthening method for glass can be referred to, for example, patent CN108473369B, or the strengthening process of TW201512135A. Regarding cleaning, for example, industrial water, ion-exchanged water, etc. can be used to clean the glass. Among them, ion-exchanged water is preferred. The cleaning conditions vary depending on the cleaning solution used, but when using ion-exchanged water, cleaning at 0-100°C is preferred in order to completely remove the attached salts.

[0072] In addition, the step of mixing ZrO2 nano-inorganic oxide with anhydrous ethanol can also be performed using a zirconium precursor, including but not limited to zirconium tetrachloride, zirconium isopropoxide, zirconium oxychloride or their precursors.

[0073] Comparative Example 1 (conventional reinforcement 3mm):

[0074] A composition of B2O3, Na2O, Al2O3, CaO2, Fe2O3, and SnO2 was placed in a quartz crucible, heated in a high-temperature furnace to 1650°C, and held at that temperature for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 3mm thick was obtained. This colored flat glass was then immersed in molten potassium nitrate for 4.5 hours. The resulting tempered glass was then washed and tested according to Taiwan's current standard 10985 (R2173).

[0075] Comparative Example 2 (no reinforcement 3mm):

[0076] A composition of B2O3, Na2O, Al2O3, CaO2, Fe2O3, and SnO2 was placed in a quartz crucible, heated in a high-temperature furnace to 1650°C, and held at that temperature for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 3mm thick was obtained. No potassium nitrate immersion was performed. The tempered glass was washed and tested according to Taiwan's current standard 10985 (R2173).

[0077] Comparative Example 3 (no reinforcement 5mm):

[0078] A composition of B2O3, Na2O, Al2O3, CaO2, Fe2O3, and SnO2 was placed in a quartz crucible, heated in a high-temperature furnace to 1650°C, and held at that temperature for 3.5 hours. The molten glass was cast onto a preheated graphite plate and annealed in a 650°C holding furnace. After rough grinding and polishing, a sample approximately 5mm thick was obtained. Immersion in molten potassium nitrate was omitted. The tempered glass was washed and tested according to Taiwan's current standard 10985 (R2173).

[0079] The following data can be obtained by comprehensively comparing the numerical values ​​of the above embodiments and comparative examples.

[0080] Table 2 below is a table of the composition content (weight percentage, wt%) of the examples and comparative examples. Please refer to Comparative Examples 1, 2, and 3 first. Under the same composition and similar proportions, the thickness of Comparative Example 1 is 3mm after strengthening, the thickness of Comparative Example 2 is 3mm without strengthening, and the thickness of Comparative Example 3 is 5mm without strengthening. It can be seen that in the comparative examples of conventional technology, if the 3mm glass is not strengthened, it will not pass the shattering test and the impact resistance test. In order to pass the test, it must be strengthened or the thickness must be increased. Comparative Examples 2 and 3 are compared for the increase in thickness; Comparative Examples 1 and 2 are compared for whether the glass is strengthened or not.

[0081] Table 2 is a table of the composition contents (weight percentage, wt%) of the examples and comparative examples of the present application.

[0082]

[0083]

[0084] Table 2

[0085] A common way to reduce thickness while maintaining strength is to strengthen it, which can be divided into physical strengthening or chemical strengthening. Physical strengthening requires raising the temperature to 800 degrees and then rapidly cooling. Colored glass will usually become fogged or deteriorate to a non-original color due to compositional changes, so it is rarely used in conventional technology. Chemical strengthening usually uses chemical agents to use ion exchange to change the composition of the glass surface, allowing the glass to resist pressure. Although chemical strengthening is more commonly used than physical strengthening, its difficulty is that the effective ingredients Al, Ca, Fe, and Sn will also be ion-exchanged with Na in equal proportions, resulting in an imbalance in the ratio, which increases the mechanical tensile strength but loses the ability to block infrared rays.

[0086] To overcome the weaknesses of chemical strengthening, the present embodiment incorporates elements of physical strengthening into chemical strengthening methods. This embodiment utilizes a sol-gel method to coat the outer layer with a protective zirconium oxide layer. Therefore, during the chemical strengthening process, the ratio of active ingredients remains constant, achieving the desired effect of increasing strength while maintaining thermal insulation properties.

[0087] Specifically, this application achieves the same strength as typical 5-6mm thicknesses at a thickness of 3mm, and passes the visible light transmittance, breakage, and impact resistance tests specified in Taiwan's current standard 10985 for automotive safety glass. Furthermore, due to the high hardness, high refractive index, and transparent colorless properties of zirconium oxide, it maintains a visible light transmittance exceeding 73% at wavelengths of 380-780nm and an average near-infrared light transmittance of less than 30% at wavelengths of 780-2500nm.

[0088] In other words, when the thickness of the present invention is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 2000 nm is less than 40%. Preferably, when the thickness is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 1400 nm is less than 20%.

[0089] Table 3 shows the optical properties of various embodiments (Taiwan's current standard 12381 flat glass transmittance, reflectance and solar radiation heat gain test standard).

[0090] project Example 1 Example 2 Example 3 Example 4 Comparative Example 1 UV transmittance (%) 44.4 30.7 47.5 37.4 43.8 Visible light transmittance (%) 80.5 69.5 75.2 76.7 81.3 Infrared transmittance (%) 30.6 10.4 16.7 22.5 71.2 Total solar energy transmittance (%) 50.8 33.2 40.1 44.0 74.7

[0091] Table 3

[0092] Figure 3 This is an experimental diagram of the absorption rate of an embodiment of the present application; Figure 4 This is a coordinate diagram of the optical performance of Comparative Example 1 of the present application after spectrophotometry; Figure 5 This is a coordinate diagram of the optical performance of Example 1 of the present application after being subjected to a spectrophotometer; Figure 6 This is a coordinate diagram of the optical performance of Example 2 of the present application after spectrophotometry; Figure 7 This is a coordinate diagram of the optical performance of Example 3 of the present application after spectrophotometry; Figure 8 This is a coordinate diagram of the optical performance of Example 4 of this application after spectrophotometry. For the comparison and tables described in the embodiments of paragraphs 0026 to 0064, their visual presentation can be referred to Figures 3 to 8 .

[0093] In summary, the embodiments of the present application provide a tempered insulating glass, which has a transmittance of visible light with a wavelength of 380 to 780 nm greater than 71% and a transmittance of near-infrared light with a wavelength of 780 to 2000 nm less than 40% when the thickness is 3 mm; preferably, the transmittance of visible light with a wavelength of 380 to 780 nm greater than 71% and a transmittance of near-infrared light with a wavelength of 780 to 1400 nm less than 20% when the thickness is 3 mm.

[0094] At the same time, the heat-insulating component of the strengthened insulating glass of the embodiment of the present application is nanoparticles, and its outer layer is coated with a nano-inorganic layer to form microcapsule nanoparticles with a size of less than 600nm. While the properties are strengthened, the inorganic layer can prevent the nanoparticles from being ion-exchanged, thereby maintaining the original heat-insulating performance.

[0095] Although this application has been disclosed using the preferred embodiments described above, they are not intended to limit this application. Any changes and modifications made by anyone skilled in the art without departing from the spirit and scope of the present invention relative to the above embodiments are still within the scope of the technology protected by this application. Therefore, the scope of protection of this application shall include all changes within the meaning and equivalent scope of the appended claims. If the above embodiments can be combined, this application includes any combination of embodiments.

Claims

1. A tempered insulating glass, expressed in weight percentage (wt%), characterized in that: Contains: 60.0~85.2wt% SiO2, 6.14~12.0wt% B2O3, 6.14~12.0wt% Na2O, 0.1~3.0wt% Al2O3, 0.1~2.25wt% CaO2, 0.1~0.6wt% Fe2O3, 0.1~1.0wt% SnO2, 0.1~1.0wt% Sb2O3, 0.1~1.0wt% Pr2O3, and 0.1~1.0wt% ZrO2.

2. The tempered insulating glass according to claim 1, wherein: When the thickness is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 2000 nm is less than 40%.

3. The tempered insulating glass according to claim 1, wherein: Contains: 60.0~85.2wt% SiO2, 8±2.5wt% B2O3, 8±2.5wt% Na2O, 1.7±1wt% Al2O3, 1.2±0.5wt% CaO2, 0.35±0.15wt% Fe2O3, 0.35±0.15wt% SnO2, 0.35±0.15wt% Sb2O3, 0.35±0.15wt% Pr2O3, and 0.35±0.15wt% ZrO2.

4. The tempered insulating glass according to claim 3, wherein: When the thickness is 3 mm, the transmittance of visible light with a wavelength of 380 to 780 nm is greater than 71%, and the transmittance of near-infrared light with a wavelength of 780 to 1400 nm is less than 20%.

5. The tempered insulating glass as claimed in claim 1, wherein B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2 Sb2O3, and Pr2O3 form nanoparticles, and the outer layer of the nanoparticles is coated with a nano-inorganic layer to form microcapsule nanoparticles with a size of less than 600 nm.

6. The tempered insulating glass according to claim 5, wherein: The nano inorganic layer comprises a ZrO2 nano inorganic layer.

7. A method for manufacturing a tempered insulating glass, for manufacturing the tempered insulating glass as claimed in claim 1, the method comprising: Take glass raw materials with the composition ratio as claimed in claim 1; performing cryogenic grinding on the glass raw material to obtain a cryogenically ground glass raw material; Microencapsulating the frozen ground glass raw material with nano inorganic oxide to obtain a microencapsulated glass raw material; The microencapsulated glass raw material is placed in a quartz crucible and placed in a high-temperature furnace, heated to about 1650° C. and then kept warm for about 210 minutes to obtain a molten glass liquid; The molten glass liquid is cast onto a preheated graphite plate, and then placed in a heat preservation furnace at about 650° C. for annealing to obtain a rough glass; Roughly grinding and polishing the rough glass to obtain a colored flat glass with a thickness of about 3 mm; soaking the colored flat glass in potassium nitrate molten salt for about 4.5 hours; and After the colored flat glass is cleaned, the colored reinforced heat-insulating glass is obtained.

8. The method for manufacturing the tempered insulating glass according to claim 7, wherein: The cryogenic grinding step includes: precooling the glass raw material to about -150-180 degrees Celsius with liquid nitrogen, and performing cryogenic grinding while keeping the temperature low until the particle size is about 0.4um±0.1um.

9. The method for manufacturing the tempered insulating glass according to claim 8, wherein: The microencapsulation step comprises: Take ZrO2 nano inorganic oxide; Mix the nano inorganic oxide and anhydrous ethanol, place on a heating plate, heat to about 50-70° C., and stir for 1 hour; Then add B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, Pr2O3 oxides and shake for 1 hour; and After being placed in an oven at 80° C. for drying, the raw material was placed in a calcining furnace and heated at 600° C. for 2 hours to obtain the colored microencapsulated glass raw material.

10. A tempered insulating glass, comprising a first surface (11) and a second surface (12), and a glass layer (20) sandwiched between the first surface (11) and the second surface (12), wherein the glass layer (20) comprises the composition as claimed in claim 1 or 5, wherein the glass layer (20) comprises a plurality of microcapsule nanoparticles (23).

11. The tempered insulating glass according to claim 10, wherein: The microcapsule nanoparticle (23) comprises a nanoparticle core (21), wherein the nanoparticle core (21) comprises B2O3, Na2O, Al2O3, CaO2, Fe2O3, SnO2, Sb2O3, and Pr2O3, and the nanoparticle core (21) is coated by a nano inorganic shell (22), and the two shells together form the microcapsule nanoparticle (23) with a size of less than 600 nm.

12. The tempered insulating glass according to claim 11, wherein: The glass layer (20) is formed by stacking the microcapsule nanoparticles (23).

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