Glass material, chemically strengthened glass and method of manufacturing and use thereof

Abstract

The application provides a glass material with high Young's modulus, a chemically strengthened glass, and a manufacturing method and application thereof. The glass material contains, in terms of percentage by weight, SiO2: 30-50%; Al2O3: 13-27%; ZrO2: 1-12%; Y2O3: 15-32%; and Li2O: 1-10%. Through reasonable component design, the glass material obtained by the application has high Young's modulus, and the glass material is suitable for chemical strengthening.

Description

Technical Field

[0001] This invention relates to a glass material, and more particularly to a glass material with a high Young's modulus, as well as chemically strengthened glass made therefrom and its applications. Background Technology

[0002] In recent years, portable electronic devices such as smartphones and tablet PCs, as well as display devices such as touch panels and LCD TVs, have largely adopted protective glass to enhance the protection and aesthetics of their displays and protect internal electronic components. Portable electronic devices, in particular, are increasingly designed to be lightweight and thin to reduce the differentiation caused by their slim design and the burden of movement, requiring thinner protective glass for the displays. Simultaneously, the increasing size of electronic devices necessitates a corresponding increase in the size of the protective glass. The thinner and larger the glass, the lower its resistance to deformation, making it more prone to warping and breakage during manufacturing and use under stress. With technological advancements, higher requirements have been placed on the strength (e.g., four-point bending strength, compressive strength) and deformation resistance of protective glass used in these applications. A higher Young's modulus in glass makes it less prone to deformation during application. Current technology typically involves chemically strengthening lithium-containing glass to obtain chemically strengthened glass with high surface strength. However, this type of lithium-containing glass has a low Young's modulus; although its strength can be improved through chemical strengthening, it cannot meet the requirements for deformation resistance. Therefore, developing glass materials with high Young's modulus and suitable for chemical strengthening is of great significance to the development of electronic devices and display devices. Summary of the Invention

[0003] Based on the above reasons, the technical problem to be solved by the present invention is to provide a glass material with a high Young's modulus that is suitable for chemical strengthening.

[0004] (1) Glass material, the composition of which is expressed as a percentage by weight, contains: SiO2: 30% to 50%; Al2O3: 13% to 27%; ZrO2: 1% to 12%; Y2O3: 15% to 32%; Li2O: 1% to 10%.

[0005] (2) The glass material according to (1) further comprises, by weight percentage: La2O3: 0-8%; and / or Gd2O3: 0-5%; and / or Na2O: 0-3%; and / or K2O: 0-2%; and / or RO: 0-5%; and / or B2O3: 0-4%; and / or TiO2: 0-4%; and / or clarifying agent: 0-2%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

[0006] (3) Glass material, the composition of which is expressed as a weight percentage, is composed of SiO2: 30% to 50%; Al2O3: 13% to 27%; ZrO2: 1% to 12%; Y2O3: 15% to 32%; Li2O: 1% to 10%; La2O3: 0% to 8%; Gd2O3: 0% to 5%; Na2O: 0% to 3%; K2O: 0% to 2%; RO: 0% to 5%; B2O3: 0% to 4%; TiO2: 0% to 4%; and clarifying agent: 0% to 2%. The RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

[0007] (4) The glass material according to any one of (1) to (3) has components expressed as weight percentages that satisfy one or more of the following six conditions:

[0008] 1) The ZrO2 / Y2O3 ratio is 0.06 to 0.60, and can be selected as 0.10 to 0.58, more preferably 0.13 to 0.48, and even more preferably 0.15 to 0.38;

[0009] 2) The Li2O / ZrO2 ratio is 0.20 to 3.00, and can be 0.40 to 2.50. More preferably, it can be 0.45 to 2.00, and even more preferably, it can be 0.50 to 1.80.

[0010] 3) The ratio of (Li2O+Y2O3+Al2O3) / SiO2 is 0.80~2.10, and can be selected as 1.00~2.00, or even more preferably 1.20~1.70;

[0011] 4) The ratio of (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.35~1.00, and optionally (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.40~0.90, and even more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.50~0.80;

[0012] 5) The Y2O3 / Al2O3 ratio is 0.70 to 2.00, and can be 0.80 to 1.80, or even 0.90 to 1.50.

[0013] 6) The SiO2 / (Y2O3+La2O3) ratio is 0.80 to 2.80, and can be 1.00 to 2.20, or even 1.20 to 1.90.

[0014] (5) The glass material according to any one of (1) to (3), wherein the composition is expressed as a weight percentage, wherein: SiO2: 32% to 47%, optionally SiO2: 36% to 44%; and / or Al2O3: 16% to 25%, optionally Al2O3: 18% to 24%; and / or ZrO2: 2% to 10%, optionally ZrO2: 3% to 8%; and / or Y2O3: 18% to 30%, optionally Y2O3: 20% to 27%; and / or Li2O: 1.5% to 9%, optionally Li2O: 2% to 8%; and / or La2O3: 0% to 6%, optionally La2O3: 0% to 5%; and / or Gd2O3: 0% to 3%, optionally Gd2O3 : 0-1%, optionally without Gd2O3; and / or Na2O: 0-2%, optionally Na2O: 0-1%; and / or K2O: 0-1%, optionally K2O: 0-0.5%; and / or RO: 0-3%, optionally RO: 0-2%; and / or B2O3: 0-2%, optionally B2O3: 0-1%, optionally without B2O3; and / or TiO2: 0-2%, optionally TiO2: 0-1%; and / or clarifying agent: 0-1%, optionally clarifying agent: 0-0.5%, wherein the RO is one or more of MgO, CaO, SrO, BaO, ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, CeO2.

[0015] (6) The glass material according to any one of (1) to (3), wherein the refractive index of the glass material is 1.56 to 1.65, optionally 1.57 to 1.63, more preferably 1.58 to 1.61; and / or the drop ball test height is 1400 mm or more, optionally 1500 mm or more, more preferably 1600 mm or more; and / or the Vickers hardness is 690 kgf / mm. 2 The above can be selected as 700 kgf / mm 2 The above can also be selected as 710kgf / mm 2 The above; and / or a Young's modulus of 95 GPa or higher, optionally 98 Ga or higher, and even more preferably 100 GPa or higher; and / or a coefficient of thermal expansion of 45 × 10⁻⁶. -7 / K~70×10 -7 / K, optional 50×10 -7 / K~65×10 -7 / K, or 53×10 -7 / K~63×10 -7 / K; and / or a density of 3.60 g / cm³ 3 The following can be selected as 3.50g / cm 3 The following is an alternative option: 3.40 g / cm³ 3 The following can be further selected as 2.80~3.30g / cm³. 3 .

[0016] (7) According to any one of (1) to (3), the glass material with a thickness of less than 1 mm has an average light transmittance of 88% or more at a wavelength of 400 to 800 nm, which can be selected as 89% or more, and more preferably 90% or more; and / or the glass material with a thickness of less than 1 mm has a light transmittance of 89% or more at a wavelength of 550 nm, which can be selected as 90% or more, and more preferably 91% or more.

[0017] (8) According to the glass material described in (7), the thickness of the glass material is 0.2 to 1 mm, optionally 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm.

[0018] (9) Glass preforms, made of any of the glass materials described in (1) to (8).

[0019] (10) Chemically strengthened glass, made of any of the glass materials described in (1) to (8), or made of the glass preform described in (9).

[0020] (11) The chemically strengthened glass according to (10), wherein the surface stress of the chemically strengthened glass is 400 MPa or more, optionally 450 MPa or more, more preferably 480 MPa or more, and further preferably 500 MPa or more; and / or the ion exchange layer depth is 80 μm or more, optionally 90 μm or more, more preferably 95 μm or more, and further preferably 100 μm or more; and / or the drop ball test height is 1500 mm or more, optionally 1600 mm or more, and further preferably 1700 mm or more; and / or the fracture toughness is 0.7 MPa·m. 1 / 2 The above can be selected as 0.8 MPa·m 1 / 2 The above can also be selected as 0.9 MPa·m 1 / 2 The above; and / or a four-point bending strength of 750 MPa or higher, optionally 780 MPa or higher, and even more preferably 820 MPa or higher; and / or a Vickers hardness of 720 kgf / mm². 2 The above can be selected as 730 kgf / mm 2 The above can also be selected as 740kgf / mm 2The above; and / or drop resistance of 700mm or more, with 800mm or more optional, and 900mm or more optional; and / or compressive strength of 1200N or more, with 1300N or more optional, and 1400N or more optional.

[0021] (12) According to (10), the chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88% or more at a wavelength of 400 to 800 nm, which can be selected as 89% or more, and more preferably 90% or more; and / or the chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89% or more at a wavelength of 550 nm, which can be selected as 90% or more, and more preferably 91% or more.

[0022] (13) The chemically strengthened glass according to (12) has a thickness of 0.2 to 1 mm, which can be selected as 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm.

[0023] (14) Chemically strengthened glass, the composition of which is expressed as a percentage by weight, contains: SiO2: 30% to 50%; Al2O3: 13% to 27%; ZrO2: 1% to 12%; Y2O3: 15% to 32%; Li2O: 1% to 10%.

[0024] (15) The chemically strengthened glass according to (14) further comprises, by weight percentage: La2O3: 0-8%; and / or Gd2O3: 0-5%; and / or Na2O: 0-3%; and / or K2O: 0-2%; and / or RO: 0-5%; and / or B2O3: 0-4%; and / or TiO2: 0-4%; and / or clarifying agent: 0-2%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

[0025] (16) Chemically strengthened glass, the composition of which is expressed as a weight percentage as follows: SiO2: 30%–50%; Al2O3: 13%–27%; ZrO2: 1%–12%; Y2O3: 15%–32%; Li2O: 1%–10%; La2O3: 0–8%; Gd2O3: 0–5%; Na2O: 0–3%; K2O: 0–2%; RO: 0–5%; B2O3: 0–4%; TiO2: 0–4%; clarifier: 0–2%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifier is one or more of Sb2O3, SnO2, and CeO2.

[0026] (17) The chemically strengthened glass according to any one of (14) to (16) has a composition expressed as a weight percentage that satisfies one or more of the following six conditions:

[0027] 1) The ZrO2 / Y2O3 ratio is 0.06 to 0.60, and can be selected as 0.10 to 0.58, more preferably 0.13 to 0.48, and even more preferably 0.15 to 0.38;

[0028] 2) The Li2O / ZrO2 ratio is 0.20 to 3.00, and can be 0.40 to 2.50. More preferably, it can be 0.45 to 2.00, and even more preferably, it can be 0.50 to 1.80.

[0029] 3) The ratio of (Li2O+Y2O3+Al2O3) / SiO2 is 0.80~2.10, and can be selected as 1.00~2.00, or even more preferably 1.20~1.70;

[0030] 4) The ratio of (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.35~1.00, and optionally (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.40~0.90, and even more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.50~0.80;

[0031] 5) The Y2O3 / Al2O3 ratio is 0.70 to 2.00, and can be 0.80 to 1.80, or even 0.90 to 1.50.

[0032] 6) The SiO2 / (Y2O3+La2O3) ratio is 0.80 to 2.80, and can be 1.00 to 2.20, or even 1.20 to 1.90.

[0033] (18) The chemically strengthened glass according to any one of (14) to (16), wherein the composition is expressed as a weight percentage, wherein: SiO2: 32% to 47%, optionally SiO2: 36% to 44%; and / or Al2O3: 16% to 25%, optionally Al2O3: 18% to 24%; and / or ZrO2: 2% to 10%, optionally ZrO2: 3% to 8%; and / or Y2O3: 18% to 30%, optionally Y2O3: 20% to 27%; and / or Li2O: 1.5% to 9%, optionally Li2O: 2% to 8%; and / or La2O3: 0% to 6%, optionally La2O3: 0% to 5%; and / or Gd2O3: 0% to 3%, optionally Gd2O3: 0% to 1%, more preferably... The container is free of Gd2O3; and / or Na2O: greater than 0 but less than or equal to 2%, optionally Na2O: greater than 0 but less than or equal to 1%; and / or K2O: greater than 0 but less than or equal to 1%, optionally K2O: greater than 0 but less than or equal to 0.5%; and / or RO: 0 to 3%, optionally RO: 0 to 2%; and / or B2O3: 0 to 2%, optionally B2O3: 0 to 1%, more preferably free of B2O3; and / or TiO2: 0 to 2%, optionally TiO2: 0 to 1%; and / or clarifying agent: 0 to 1%, optionally clarifying agent: 0 to 0.5%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

[0034] (19) The chemically strengthened glass according to any one of (14) to (16), wherein the surface stress of the chemically strengthened glass is 400 MPa or more, optionally 450 MPa or more, more preferably 480 MPa or more, and further preferably 500 MPa or more; and / or the ion exchange layer depth is 80 μm or more, optionally 90 μm or more, more preferably 95 μm or more, and further preferably 100 μm or more; and / or the drop ball test height is 1500 mm or more, optionally 1600 mm or more, and more preferably 1700 mm or more; and / or the fracture toughness is 0.7 MPa·m. 1 / 2 The above can be selected as 0.8 MPa·m 1 / 2 The above can also be selected as 0.9 MPa·m 1 / 2 The above; and / or a four-point bending strength of 750 MPa or higher, optionally 780 MPa or higher, and even more preferably 820 MPa or higher; and / or a Vickers hardness of 720 kgf / mm². 2 The above can be selected as 730 kgf / mm 2 The above can also be selected as 740kgf / mm 2The above; and / or drop resistance of 700mm or more, with 800mm or more optional, and 900mm or more optional; and / or compressive strength of 1200N or more, with 1300N or more optional, and 1400N or more optional.

[0035] (20) The chemically strengthened glass according to any one of (14) to (16), wherein the chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88% or more at a wavelength of 400 to 800 nm, optionally 89% or more, and more preferably 90% or more; and / or the chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89% or more at a wavelength of 550 nm, optionally 90% or more, and more preferably 91% or more.

[0036] (21) The chemically strengthened glass according to (20) has a thickness of 0.2 to 1 mm, optionally 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm.

[0037] (22) A glass element made of any of the glass materials described in (1) to (8), or a glass preform described in (9), or a chemically strengthened glass described in (10) to (21).

[0038] (23) A glass cover, made of any of the glass materials described in (1) to (8), or made of any of the chemically strengthened glass described in (10) to (21).

[0039] (24) An apparatus comprising any of the glass materials described in (1) to (8), or comprising any of the chemically strengthened glass described in (10) to (21), or comprising the glass element described in (22), or comprising the glass cover plate described in (23).

[0040] (25) A method for manufacturing chemically strengthened glass, the method comprising the following steps: 1) forming a glass material; 2) chemically strengthening the glass material, or chemically strengthening the glass material after processing it into a glass preform, wherein the chemical strengthening treatment comprises immersing the glass material or the glass preform in molten sodium salt and / or potassium salt.

[0041] (26) According to the manufacturing method of chemically strengthened glass described in (25), the chemical strengthening treatment includes a one-step chemical strengthening method or a multi-step chemical strengthening method. Optionally, the chemical strengthening treatment is a multi-step chemical strengthening method, and more preferably, the chemical strengthening treatment is a two-step chemical strengthening method. In the two-step chemical strengthening method, the first step of chemical strengthening is to immerse the glass material or glass preform in a molten salt containing sodium salt. The temperature of the first step of chemical strengthening is 400-550°C, optionally 420-520°C, and more preferably 430-500°C. The time of the first step of chemical strengthening is 1-11 hours, optionally 1-9 hours, and more preferably 1-7 hours. The second step of chemical strengthening is to immerse the glass material or glass preform after the first step of chemical strengthening in a molten salt containing potassium salt. The temperature of the second step of chemical strengthening is 420-520°C, optionally 430-500°C, and more preferably 440-490°C. The time of the second step of chemical strengthening is 10 minutes to 2.5 hours, optionally 20 minutes to 2 hours.

[0042] The beneficial effects of this invention are: through reasonable component design, the glass material obtained by this invention has a high Young's modulus, and the glass material of this invention is suitable for chemical strengthening. The chemically strengthened glass of this invention has high strength and other properties, meeting the application requirements of high-performance electronic and display devices. Detailed Implementation

[0043] The embodiments of the present invention will now be described in detail. However, the present invention is not limited to the embodiments described below, and appropriate modifications can be made to implement it within the scope of the purpose of the present invention. Furthermore, while there are appropriate omissions in the repeated descriptions, this does not limit the spirit of the invention. In this specification, glass before chemical strengthening is referred to as glass material or glass or pre-strengthened glass, and glass material or glass preform after chemical strengthening is referred to as chemically strengthened glass or post-strengthened glass.

[0044] [Glass Materials and Chemically Strengthened Glass]

[0045] The component ranges of the glass material and chemically strengthened glass of the present invention are described below. In the present invention, unless otherwise specified, the content, total content, and total amount of each component are expressed as weight percentages (wt%), that is, the weight percentage of the content, total content, and total amount of each component relative to the total amount of glass or chemically strengthened glass material converted into oxide composition. Here, "converted into oxide composition" means that when oxides, composite salts, hydroxides, etc., used as raw materials for the glass material or chemically strengthened glass of the present invention decompose and transform into oxides upon melting, the total amount of such oxides is taken as 100%.

[0046] Unless otherwise specified in the specific context, the numerical ranges listed in this invention include upper and lower limits, and "above" and "below" include endpoint values ​​and all integers and fractions included in the range, but are not limited to the specific values ​​listed when the range is defined. The term "and / or" as used herein is inclusive; for example, "A and / or B" means only A, or only B, or both A and B.

[0047] <Essential and Optional Components>

[0048] SiO2 is the framework of glass materials and chemically strengthened glass. As a glass network generator, it plays a role in maintaining the chemical stability of glass and improving its devitrification resistance and formability. In this invention, the above effects are achieved by containing more than 30% SiO2, optionally more than 32%, and more preferably more than 36%. If the SiO2 content is too high, the Young's modulus of the glass material and chemically strengthened glass decreases. Therefore, the SiO2 content is 50% or less, optionally less than 47%, and more preferably less than 44%. In some embodiments, the SiO2 content can be 30%, 30.5%, 31%, 31.5%, 32%, 32.5%, 33%, 33.5%, 34%, 34.5%, 35%, 35.5%, 36%, 36.5%, 37%, 37.5%, 38%, 38.5%, 39%, 39.5%, 40%, 40.5%, 41%, 41.5%, 42%, 42.5%, 43%, 43.5%, 44%, 44.5%, 45%, 45.5%, 46%, 46.5%, 47%, 47.5%, 48%, 48.5%, 49%, 49.5%, 50%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0049] Al2O3 is an essential component of the glass materials and chemically strengthened glass of this invention. It can improve the chemical strengthening properties of the glass materials, and increase the Young's modulus and drop ball test height of the glass materials and chemically strengthened glass. In this invention, the above effects are achieved by containing more than 13% Al2O3. Optionally, the Al2O3 content is 16% or more, and more preferably 18% or more. If the Al2O3 content is too high, the meltability of the glass decreases, and the melting difficulty increases. Therefore, the Al2O3 content is 27% or less, optionally 25% or less, and more preferably 24% or less. In some embodiments, the Al2O3 content can be 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, 25%, 25.5%, 26%, 26.5%, 27%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0050] ZrO2 is an essential component of the glass materials and chemically strengthened glass of this invention. It can improve the chemical strengthening properties of the glass materials, and enhance their impact resistance, fracture toughness, and hardness. In this invention, the above effects are achieved by containing more than 1% ZrO2, optionally more than 2%, and more preferably more than 3%. If the ZrO2 content is too high, it can easily lead to phase separation and devitrification during glass forming. Therefore, the ZrO2 content is 12% or less, optionally less than 10%, and more preferably less than 8%. In some embodiments, the ZrO2 content can be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0051] Y₂O₃ is an essential component of the glass material and chemically strengthened glass of this invention. It can increase the Young's modulus of the glass material and chemically strengthened glass and reduce the melting temperature of the glass. In this invention, the above-mentioned effects are achieved by containing more than 15% Y₂O₃, optionally more than 18%, and more preferably more than 20%. On the other hand, Y₂O₃ is a component with a high electric field strength. Excessive content can hinder ion exchange during the chemical strengthening process of the glass material, leading to a decrease in the chemical strengthening performance of the glass material and hindering the improvement of the drop ball test height of the glass material and chemically strengthened glass. Therefore, the Y₂O₃ content is 32% or less, optionally less than 30%, and more preferably less than 27%. In some embodiments, the Y₂O₃ content can be 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, 25%, 25.5%, 26%, 26.5%, 27%, 27.5%, 28%, 28.5%, 29%, 29.5%, 30%, 30.5%, 31%, 31.5%, 32%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0052] In some embodiments, by controlling the ratio of Y₂O₃ to Al₂O₃ (Y₂O₃ / Al₂O₃) within the range of 0.70 to 2.00, the hardness of the glass material and the chemically strengthened glass can be improved while simultaneously exhibiting high fracture toughness. Therefore, a Y₂O₃ / Al₂O₃ ratio of 0.70 to 2.00 is preferable, more preferably 0.80 to 1.80, and even more preferably 0.90 to 1.50. In some implementations, the Y₂O₃ / Al₂O₃ ratio can be 0.70, 0.73, 0.75, 0.77, 0.80, 0.83, 0.85, 0.87, 0.90, 0.93, 0.95, 0.97, 1.00, 1.03, 1.05, 1.07, 1.10, 1.13, 1.15, 1.17, 1.20, 1.23, 1.25, 1.27, 1.30, 1.33, 1 0.35, 1.37, 1.40, 1.43, 1.45, 1.47, 1.50, 1.53, 1.55, 1.57, 1.60, 1.63, 1.65, 1.67, 1.70, 1.73, 1.75, 1.77, 1.80, 1.83, 1.85, 1.87, 1.90, 1.93, 1.95, 1.97, 2.00, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0053] In some embodiments, controlling the ratio of ZrO2 to Y2O3 (ZrO2 / Y2O3) within the range of 0.06 to 0.60 is beneficial for improving the chemical strengthening properties of the glass material, increasing the depth of the ion exchange layer in the chemically strengthened glass, and giving the chemically strengthened glass higher fracture toughness and impact resistance. Therefore, a ZrO2 / Y2O3 ratio of 0.06 to 0.60 is preferable, more preferably 0.10 to 0.58, further preferably 0.13 to 0.48, and even more preferably 0.15 to 0.38. In some implementations, the ZrO2 / Y2O3 ratio can be 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0... 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.60, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0054] Li₂O is the main component used for ion exchange in the chemical strengthening of glass materials. An appropriate amount of Li₂O can provide sufficient compressive stress for chemically strengthened glass, resulting in higher flexural strength and fracture toughness. However, excessive Li₂O content reduces the Young's modulus of both the glass material and the chemically strengthened glass. Therefore, the Li₂O content is 1%–10%, optionally 1.5%–9%, ​​and more preferably 2%–8%. In some embodiments, the Li₂O content can be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, etc., as well as all ranges and sub-ranges between these values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0055] In some embodiments, by controlling the ratio of Li2O to ZrO2 (Li2O / ZrO2) within the range of 0.20 to 3.00, the bulk drop ball height of the glass material can be increased, thereby improving the surface stress, drop ball height, and flexural strength of the chemically strengthened glass. Therefore, a Li2O / ZrO2 ratio of 0.20 to 3.00 is preferred, more preferably 0.40 to 2.50, further preferably 0.45 to 2.00, and even more preferably 0.50 to 1.80. In some implementations, the Li₂O / ZrO₂ content can be 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1 The ranges are 0.60, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 1.95, 2.00, 2.05, 2.10, 2.15, 2.20, 2.25, 2.30, 2.35, 2.40, 2.45, 2.50, 2.55, 2.60, 2.65, 2.70, 2.75, 2.80, 2.85, 2.90, 2.95, 3.00, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0056] In some embodiments, by controlling the ratio of the total content of Li2O, Y2O3, and Al2O3 (Li2O+Y2O3+Al2O3) to the content of SiO2 (Li2O+Y2O3+Al2O3) / SiO2 within the range of 0.80 to 2.10, the Young's modulus of the glass material and the chemically strengthened glass can be increased while simultaneously improving their hardness. Therefore, a ratio of (Li2O+Y2O3+Al2O3) / SiO2 of 0.80 to 2.10 is optional, more preferably (Li2O+Y2O3+Al2O3) / SiO2 of 1.00 to 2.00 is preferred, and even more preferably (Li2O+Y2O3+Al2O3) / SiO2 of 1.20 to 1.70 is optional. In some implementations, the ratio of (Li₂O+Y₂O₃+Al₂O₃) / SiO₂ can be 0.80, 0.83, 0.85, 0.87, 0.90, 0.93, 0.95, 0.97, 1.00, 1.03, 1.05, 1.07, 1.10, 1.13, 1.15, 1.17, 1.20, 1.23, 1.25, 1.27, 1.30, 1.33, 1.35, 1.37, 1.40, 1.43, 1.45, 1.47, 1.50, 1.53, 1.55, 1.57, 1.60, 1.63, 1.65, 1.67, 1.70, 1.73, 1.75, 1.77, 1.80, 1.83, 1.85, 1.87, 1.90, 1.93, 1.95, 1.97, 2.00, 2.03, 2.05, 2.07, 2.10, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0057] In some embodiments, controlling the ratio (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) between the total content of Li2O, ZrO2, and Y2O3 (Li2O+ZrO2+Y2O3) and the total content of SiO2 and Al2O3 (SiO2+Al2O3) (Li2O+ZrO2+Y2O3) in the range of 0.35 to 1.00 is beneficial for glass materials and chemically strengthened glasses to obtain excellent compressive strength. Therefore, it is preferable that (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.35 to 1.00, more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.40 to 0.90, and even more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.50 to 0.80. In some implementations, (Li₂O + ZrO₂ + Y₂O₃) / (SiO₂ + Al₂O₃) can be 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.60, 0.61, 0.62, 0.63, 0.64, or 0.65. The values ​​are 0.66, 0.67, 0.68, 0.69, 0.70, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1.00, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0058] La2O3 can increase the refractive index of glass, improve its devitrification resistance and structural compactness. However, if the La2O3 content is too high, it will hinder ion exchange in the glass material during the chemical strengthening process, leading to a decrease in the chemical strengthening performance of the glass material and an increase in its density. Therefore, the La2O3 content is 0-8%, optionally 0-6%, and more preferably 0-5%. In some embodiments, the La2O3 content can be 0%, greater than 0%, 0.01%, 0.05%, 0.1%, 0.3%, 0.5%, 0.7%, 1%, 1.3%, 1.5%, 1.7%, 2%, 2.3%, 2.5%, 2.7%, 3%, 3.3%, 3.5%, 3.7%, 4%, 4.3%, 4.5%, 4.7%, 5%, 5.3%, 5.5%, 5.7%, 6%, 6.3%, 6.5%, 6.7%, 7%, 7.3%, 7.5%, 7.7%, 8%, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation plan, any of the above scopes can be combined with any other scopes.

[0059] In some embodiments, the ratio of SiO2 content to the total content of Y2O3 and La2O3 (Y2O3+La2O3), SiO2 / (Y2O3+La2O3), is controlled within the range of 0.80 to 2.80. This can improve the light transmittance of the glass material and the chemically strengthened glass while also giving them a higher Young's modulus. Therefore, SiO2 / (Y2O3+La2O3) can be selected as 0.80 to 2.80, more preferably 1.00 to 2.20, and even more preferably 1.20 to 1.90. In some embodiments, the SiO2 / (Y2O3+La2O3) ratio is 0.80, 0.83, 0.85, 0.87, 0.90, 0.93, 0.95, 0.97, 1.00, 1.03, 1.05, 1.07, 1.10, 1.13, 1.15, 1.17, 1.20, 1.23, 1.25, 1.27, 1.30, 1.33, 1.35, 1.37, 1.40, 1.43, 1.45, 1.47, 1.50, 1.53, 1.55, 1.57, 1.60, 1.63, 1.65, 1.67, 1.70, 1.73, 1.75, 1.7 7, 1.80, 1.83, 1.85, 1.87, 1.90, 1.93, 1.95, 1.97, 2.00, 2.03, 2.05, 2.07, 2.10, 2.13, 2.15, 2.17, 2.20, 2.23, 2.25, 2.27, 2.30, 2.33, 2.35, 2.37, 2.40, 2.43, 2.45, 2.47, 2.50, 2.53, 2.55, 2.57, 2.60, 2.63, 2.65, 2.67, 2.70, 2.73, 2.75, 2.77, 2.80, etc., as well as all ranges and subranges between the above values. It should be understood that, in the implementation scheme, any of the above ranges can be combined with any other range.

[0060] Gd₂O₃ can improve the refractive index and chemical stability of glass, but if its content exceeds 5%, the glass's resistance to devitrification and chemical strengthening properties deteriorate. Therefore, the content of Gd₂O₃ is 0–5%, optionally 0–3%, and more preferably 0–1%. In some embodiments, it is further optional that Gd₂O₃ is not present. In some embodiments, the content of Gd₂O₃ can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.3%, 3.5%, 3.7%, 4%, 4.3%, 4.5%, 4.7%, 5%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0061] Na₂O can improve the meltability of glass, but if the Na₂O content is too high, the chemical strengthening performance of the glass material will decrease, and it is prone to causing phase separation and devitrification during glass forming. Therefore, the Na₂O content in the glass material is 0-3%, preferably 0-2%, and more preferably 0-1%. In some embodiments, when sodium salts are used to chemically strengthen the glass material, a small amount of Na₂O will exist on the surface of the chemically strengthened glass. Therefore, the Na₂O content in the chemically strengthened glass is 0-3%, preferably greater than 0 but less than or equal to 2%, and more preferably greater than 0 but less than or equal to 1%. In some embodiments, the Na₂O content can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0062] K₂O improves the thermal stability and melting properties of glass, but if its content is too high, the chemical strengthening properties of the glass material deteriorate, as do its resistance to devitrification and chemical stability. Therefore, the K₂O content in the glass material of this invention is 0-2%, optionally 0-1%, and more preferably 0-0.5%. In some embodiments, when potassium salts are used to chemically strengthen the glass material, a small amount of K₂O will exist on the surface of the chemically strengthened glass. Therefore, the K₂O content in the chemically strengthened glass is 0-2%, optionally greater than 0 but less than or equal to 1%, and more preferably greater than 0 but less than or equal to 0.5%. In some embodiments, the K2O content can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0063] RO (RO can be one or more of MgO, CaO, SrO, BaO, and ZnO) can improve the meltability of glass, but excessive RO content will hinder ion exchange in the glass material during the chemical strengthening process, leading to a decrease in the chemical strengthening performance of the glass material and reducing the flexural strength and drop ball test height of chemically strengthened glass. Therefore, the RO content is 0-5%, preferably 0-3%, and even more preferably 0-2%. In some embodiments, the RO content can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.3%, 3.5%, 3.7%, 4%, 4.3%, 4.5%, 4.7%, 5%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0064] B2O3 can improve the melt flow properties and devitrification resistance of glass, but if its content is too high, it will reduce the chemical stability and hardness of the glass, and also be detrimental to the chemical strengthening properties of the glass material. Therefore, the content of B2O3 in this invention is 0-4%, optionally 0-2%, and more preferably 0-1%. In some embodiments, the content of B2O3 can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.3%, 3.5%, 3.7%, 4%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0065] TiO2 can improve the refractive index and glass-forming properties of glass, but excessive TiO2 content can lead to a decrease in the light transmittance of glass materials and chemically strengthened glass. Therefore, the TiO2 content in this invention is 0-4%, optionally 0-2%, and more preferably 0-1%. In some embodiments, the TiO2 content can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.3%, 3.5%, 3.7%, 4%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0066] In this invention, by using one or more components selected from Sb₂O₃, SnO₂, and CeO₂ as a clarifying agent containing 0-2%, the clarification effect of the glass can be improved, which is beneficial for removing bubbles from the glass. The content of the clarifying agent can optionally be 0-1%, and more preferably 0-0.5%. In some embodiments, the content of the clarifying agent can be 0%, greater than 0%, 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, etc., as well as all ranges and sub-ranges between the above values. It should be understood that, in embodiments, any of the above ranges can be combined with any other range.

[0067] The terms "not containing", "0", and "0%" used herein refer to the fact that the compound, molecule, or element was not intentionally added as a raw material to the glass material and chemically strengthened glass of this invention. However, as raw materials and / or equipment used in the production of glass material and chemically strengthened glass, there may be certain impurities or components that are not intentionally added, which may be present in small or trace amounts in the final glass material or chemically strengthened glass. Such cases are also within the scope of protection of this patent.

[0068] The properties of the glass material and chemically strengthened glass of the present invention will be described below.

[0069] <Refractive index>

[0070] Refractive index (n) of glass materials / chemically strengthened glass d Test according to the method specified in the national standard GB / T 7962.1-2010.

[0071] <Density>

[0072] The density (ρ) of glass materials / chemically strengthened glass is tested according to the method specified in the national standard GB / T7962.20-2010.

[0073] <Coefficient of thermal expansion>

[0074] The coefficient of thermal expansion (α) of glass materials / chemically strengthened glass 20 / 300℃ Data were tested at 20–300°C according to the method specified in the national standard GB / T7962.16-2010.

[0075] Young's Modulus

[0076] The Young's modulus (E) of the glass material / chemically strengthened glass was obtained by ultrasonic testing of its longitudinal wave velocity and transverse wave velocity, and then calculated according to the following formula. The test sample size was 120mm×24mm×6mm.

[0077]

[0078] G=V S 2 ρ

[0079] In the formula: E is Young's modulus, Pa;

[0080] G is the shear modulus, Pa;

[0081] V T The transverse wave velocity is in m / s;

[0082] V S The longitudinal wave velocity is given in m / s.

[0083] ρ is the density of glass, in g / cm³ 3 .

[0084] Vickers Hardness

[0085] The Vickers hardness test method for glass materials / chemically strengthened glass is as follows: The test sample is 10mm×10mm×10mm in size. After chamfering, grinding, and polishing, the sample is prepared by pressing a diamond pyramid indenter with a 136° angle between the opposing faces into a pyramid-shaped indentation on the test surface. The load (N) is divided by the surface area (mm) calculated by the length of the indentation. 2 The value is represented by ). The test load is 100 (N) and the holding time is 15 (seconds). In this invention, Vickers hardness can be simply referred to as hardness.

[0086] <Drop height test>

[0087] A chemically strengthened glass sample measuring 149mm × 73mm × 0.6mm was placed on a glass bearing fixture, and a 132g steel ball was dropped from a specified height. The maximum drop ball test height from which the sample could withstand the impact without breaking was determined. Specifically, the test was conducted starting from a drop ball test height of 800mm, and then progressively increasing the height to 800mm, 900mm, 1000mm, and above without breakage. For the embodiment with a "drop ball test height," chemically strengthened glass was used as the test object. In this embodiment, test data recorded at 1000mm indicates that the chemically strengthened glass withstood the impact without breaking even when a steel ball was dropped from a height of 1000mm. In this invention, the drop ball test height can be simply referred to as the drop ball height.

[0088] <Body Drop Test Height>

[0089] A glass sample measuring 149mm × 73mm × 0.6mm is placed on a glass bearing fixture, and a 32g steel ball is dropped from a specified height. The maximum drop height from which the sample can withstand the impact without breaking is defined as the body drop ball test height. Specifically, the test begins at a drop ball test height of 500mm, and the height is increased sequentially to 500mm, 600mm, 700mm, and above without breakage. The body drop ball test height can be simply referred to as the body drop ball height. In embodiments with a "body drop ball height," the glass material is used as the test object, and this is the glass material drop ball test height. In this embodiment, the test data recorded as 1000mm indicates that the glass material withstood the impact without breaking even when a steel ball is dropped from a height of 1000mm.

[0090] <Light transmittance>

[0091] The light transmittance mentioned in this article refers to external transmittance, or simply transmittance.

[0092] The sample was processed to a size of less than 1 mm and its opposite surfaces were polished in parallel. The average light transmittance of 400–800 nm was measured using a Hitachi U-41000 spectrophotometer.

[0093] The sample was processed to a size of less than 1 mm and its surfaces were polished in parallel. The light transmittance at 550 nm was measured using a Hitachi U-41000 spectrophotometer.

[0094] <Ion exchange layer depth>

[0095] The depth of the ion exchange layer in chemically strengthened glass was measured using a SLP-2000 glass surface stress meter.

[0096] The measurement conditions were calculated with the sample's refractive index at 1.53 and its optical elastic constant at 25 [(nm / cm ) / MPa].

[0097] Surface stress

[0098] The surface stress of chemically strengthened glass was measured using a SLP-2000 glass surface stress meter.

[0099] The measurement conditions were calculated with the sample's refractive index at 1.53 and its optical elastic constant at 25 [(nm / cm ) / MPa].

[0100] <Fracture toughness>

[0101] The method of directly measuring the indentation-propagated crack size was used. The sample size was 10mm×10mm×10mm. After chamfering, grinding and polishing, the sample was prepared. A force of 49N was applied to the sample with a Vickers hardness indenter and maintained for 30s to make an indentation. The fracture toughness was determined by the three-point bending method.

[0102] Four-point bending strength

[0103] A CMT6502 microcomputer-controlled electronic universal testing machine was used. The test sample dimensions were 149mm × 73mm × 0.6mm, and the test was conducted according to ASTM C 158-2002 standard. In this invention, the four-point bending strength can be simply referred to as bending strength.

[0104] <Drop resistance>

[0105] Drop resistance testing was conducted using a WH-2101 drop tester. A 220g load was applied to chemically strengthened glass (2D structure), with 80-grit sandpaper laid on the base. The sample was dropped freely from a specified height, directly impacting the sandpaper. The drop resistance was measured from the height from which the sample could withstand the impact without breaking. Specifically, the test started at a height of 300mm, and then increased to 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, and above without breakage. For the embodiment demonstrating "drop resistance," chemically strengthened glass was used as the test object. The test data recorded at 800mm in this embodiment indicates that the chemically strengthened glass withstood the impact without breaking even when loaded from a height of 800mm. The maximum test height for the WH-2101 drop tester was 2000mm.

[0106] <Compressive strength>

[0107] A CMT6502 microcomputer-controlled electronic universal testing machine was used. A test sample with dimensions of φ30mm × 1mm was placed on a glass bearing fixture. The compression rod had a mushroom-head design with a diameter of 10mm, and the compression speed was 5mm / min until the sample broke. Calibration with a fixture was required before testing, and the test point was located at the center. The test button was pressed until the sample broke under pressure, and the pressure (N) at break was recorded. For the embodiment with "compressive strength," chemically strengthened glass was used as the test object. The test data recorded as 500N in this embodiment indicates that the chemically strengthened glass could withstand a maximum compressive force of 500N before breaking.

[0108] The glass material of this invention has the following properties:

[0109] 1) In some embodiments, the refractive index (n) of the glass material of the present invention is... dThe lower limit of the refractive index (n) is 1.56, optionally 1.57, and more preferably 1.58. In some embodiments, the refractive index (n) of the glass material of the present invention is... d The upper limit for (n) is 1.65, with an optional upper limit of 1.63, and a more optional upper limit of 1.61. In some embodiments, the refractive index (n) of the glass material is... d The values ​​can be 1.56, 1.561, 1.563, 1.565, 1.567, 1.569, 1.57, 1.571, 1.573, 1.575, 1.577, 1.579, 1.58, 1.581, 1.583, 1.585, 1.587, 1.589, 1.59, 1.591, 1.593, 1.595, 1.597, 1.599, 1.60, 1.601, 1.603, 1.605, 1 .607, 1.609, 1.61, 1.611, 1.613, 1.615, 1.617, 1.619, 1.62, 1.621, 1.623, 1.625, 1.627, 1.629, 1.63, 1.631, 1.633, 1.635, 1.637, 1.639, 1.64, 1.641, 1.643, 1.645, 1.647, 1.65, etc., as well as all ranges and subranges between the above values.

[0110] 2) In some embodiments, the drop ball test height of the glass material of the present invention is 1400 mm or more, optionally 1500 mm or more, and more preferably 1600 mm or more. In some embodiments, the drop ball test height of the glass material can be 1400 mm, 1500 mm, 1600 mm, 1700 mm, 1800 mm, etc., as well as all ranges and sub-ranges between the above values.

[0111] 3) In some embodiments, the Vickers hardness of the glass material of the present invention is 690 kgf / mm². 2 The above can be selected as 700 kgf / mm 2 The above can also be selected as 710kgf / mm 2 That's all. In some embodiments, the Vickers hardness of the glass material can be 690 kgf / mm. 2 693 kgf / mm 2 695kgf / mm 2 697kgf / mm 2 700kgf / mm 2 703 kgf / mm 2 705kgf / mm 2 707 kgf / mm 2 710kgf / mm 2713 kgf / mm 2 715kgf / mm 2 717kgf / mm 2 720kgf / mm 2 723 kgf / mm 2 725kgf / mm 2 727kgf / mm 2 730kgf / mm 2 733kgf / mm 2 735kgf / mm 2 737kgf / mm 2 740kgf / mm 2 743 kgf / mm 2 745kgf / mm 2 747kgf / mm 2 750kgf / mm 2 753 kgf / mm 2 755kgf / mm 2 757kgf / mm 2 760kgf / mm 2 And so on, as well as all ranges and subranges between the above values.

[0112] 4) In some embodiments, the glass material with a thickness of less than 1 mm has an average light transmittance of 88% or more at a wavelength of 400-800 nm, optionally 89% or more, and more preferably 90% or more. The thickness of the glass material can be 0.2-1 mm, more preferably 0.3-0.9 mm, further preferably 0.5-0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm. In some embodiments, the average light transmittance of glass materials with a thickness of less than 1 mm at wavelengths of 400–800 nm is 88%, 88.1%, 88.2%, 88.3%, 88.4%, 88.5%, 88.6%, 88.7%, 88.8%, 88.9%, 89%, 89.1%, 89.2%, 89.3%, 89.4%, 89.5%, 89.6%, 89.7%, 89.8%, 89.9%, 90%, 90.1%, 90.2%, 90.3%, 90.4%, 90.5%, 90.6%, 90.7%, 90.8%, 90.9%, 91%, etc., as well as all ranges and subranges between the above values.

[0113] 5) In some embodiments, the glass material with a thickness of less than 1 mm has a light transmittance of 89% or more at a wavelength of 550 nm, optionally 90% or more, and more preferably 91% or more. The thickness of the glass material can be 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, further preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm. In some embodiments, the transmittance of glass materials with a thickness of less than 1 mm at a wavelength of 500 nm is 89%, 89.1%, 89.2%, 89.3%, 89.4%, 89.5%, 89.6%, 89.7%, 89.8%, 89.9%, 90%, 90.1%, 90.2%, 90.3%, 90.4%, 90.5%, 90.6%, 90.7%, 90.8%, 90.9%, 91%, 91.1%, 91.2%, 91.3%, 91.4%, 91.5%, 91.6%, 91.7%, 91.8%, 91.9%, 92%, etc., as well as all ranges and subranges between the above values.

[0114] 6) In some embodiments, the Young's modulus (E) of the glass material of the present invention is 95 GPa or above, optionally 98 Ga or above, and more preferably 100 GPa or above. In some embodiments, the Young's modulus (E) of the glass material can be 95 GPa, 95.3 GPa, 95.5 GPa, 95.7 GPa, 96 GPa, 96.3 GPa, 96.5 GPa, 96.7 GPa, 97 GPa, 97.3 GPa, 97.5 GPa, 97.7 GPa, 98 GPa, 98.3 GPa, 98.5 GPa, 98.7 GPa, 99 GPa, 99.3 GPa, 99.5 GPa, 99.7 GPa, 100 GPa, 100.3 GPa, 100.5 GPa, 100.7 GPa, 101 GPa, 101.3 GPa, 101.5 GPa, 101.7 GPa, 102 GPa, 102.3 GPa, 102.5 GPa, 102.7 GPa, 103 GPa, or 103. 5GPa, 104GPa, 104.5GPa, 105GPa, 105.5GPa, 106GPa, 106.5GPa, 107GPa, 107.5GPa, 10 8GPa, 108.5GPa, 109GPa, 109.5GPa, 110GPa, 110.5GPa, 111GPa, 111.5GPa, 112GPa, 112 0.5GPa, 113GPa, 113.5GPa, 114GPa, 114.5GPa, 115GPa, 115.5GPa, 116GPa, 116.5GPa, 117GPa, 117.5GPa, 118GPa, 118.5GPa, 119GPa, 119.5GPa, 120GPa, etc., as well as all ranges and subranges between the above values.

[0115] 7) In some embodiments, the coefficient of thermal expansion (α) of the glass material of the present invention is... 20 / 300℃ ) is 45×10 -7 / K~70×10 -7 / K, optional 50×10 -7 / K~65×10 -7 / K, or 53×10 -7 / K~63×10 -7 / K. In some embodiments, the coefficient of thermal expansion of the glass material (α) 20 / 300℃ ) can be 45×10 -7 / K、46×10 -7 / K、47×10 -7 / K、48×10 -7 / K、49×10 -7 / K、50×10 -7 / K、51×10-7 / K、52×10 -7 / K、53×10 -7 / K、54×10 -7 / K、55×10 -7 / K、56×10 -7 / K、57×10 -7 / K、58×10 -7 / K、59×10 -7 / K、60×10 -7 / K、61×10 -7 / K、62×10 -7 / K、63×10 -7 / K、64×10 -7 / K、65×10 -7 / K、66×10 -7 / K、67×10 -7 / K、68×10 -7 / K、69×10 -7 / K、70×10 -7 / K, etc., and all ranges and subranges between the above values.

[0116] 8) In some embodiments, the density (ρ) of the glass material of the present invention is 3.60 g / cm³. 3 The following can be selected as 3.50g / cm 3 The following is an alternative option: 3.40 g / cm³ 3 The following can be further selected as 2.80~3.30g / cm³. 3 In some embodiments, the density (ρ) of the glass material can be 3.60 g / cm³. 3 3.59g / cm 3 3.58g / cm 3 3.57g / cm 3 3.56g / cm 3 3.55g / cm 3 3.54g / cm 3 3.53g / cm 3 3.52g / cm 3 3.51g / cm 3 3.50g / cm 3 3.49 g / cm 3 3.48 g / cm 3 3.47 g / cm 3 3.46 g / cm 3 3.45g / cm 3 3.44 g / cm 3 3.43 g / cm3 3.42 g / cm 3 3.41 g / cm 3 3.40 g / cm 3 3.39 g / cm 3 3.38g / cm 3 3.37 g / cm 3 3.36 g / cm 3 3.35g / cm 3 3.34 g / cm 3 3.33 g / cm 3 3.32g / cm 3 3.31 g / cm 3 3.30g / cm 3 3.29 g / cm 3 3.28g / cm 3 3.27 g / cm 3 3.26 g / cm 3 3.25g / cm 3 3.23 g / cm 3 3.20g / cm 3 3.17g / cm 3 3.15g / cm 3 3.13 g / cm 3 3.10 g / cm 3 3.07 g / cm 3 3.05g / cm 3 3.03 g / cm 3 3.00g / cm 3 2.97g / cm 3 2.95g / cm 3 2.93g / cm 3 2.90g / cm 3 2.87 g / cm 3 2.85g / cm 3 2.83 g / cm 3 2.80g / cm 3 And so on, as well as all ranges and subranges between the above values.

[0117] The chemically strengthened glass of this invention has the following properties:

[0118] 1) In some embodiments, the surface stress of the chemically strengthened glass of the present invention is 400 MPa or more, optionally 450 MPa or more, more preferably 480 MPa or more, and even more preferably 500 MPa or more. In some embodiments, the surface stress of the chemically strengthened glass is 400 MPa, 405 MPa, 410 MPa, 415 MPa, 420 MPa, 425 MPa, 430 MPa, 435 MPa, 440 MPa, 445 MPa, 450 MPa, 455 MPa, 460 MPa, 465 MPa, 470 MPa, 475 MPa, 480 MPa, 485 MPa, 490 MPa, 495 MPa, 500 MPa, 505 MPa, 510 MPa, 515 MPa, 520 MPa, 525 MPa, 530 MPa, etc., as well as all ranges and subranges between the above values.

[0119] 2) In some embodiments, the ion exchange layer depth of the chemically strengthened glass of the present invention is 80 μm or more, optionally 90 μm or more, more preferably 95 μm or more, and even more preferably 100 μm or more. In some embodiments, the ion exchange layer depth of the chemically strengthened glass is 80 μm, 81 μm, 82 μm, 83 μm, 84 μm, 85 μm, 86 μm, 87 μm, 88 μm, 89 μm, 90 μm, 91 μm, 92 μm, 93 μm, 94 μm, 95 μm, 96 μm, 97 μm, 98 μm, 99 μm, 100 μm, or 101 μm. μm, 102μm, 103μm, 104μm, 105μm, 106μm, 107μm, 108μm, 109μm, 110μm, 111μm, 112μm, 113μm, 114μm, 115μm, 116μm, 117μm, 118μm, 119μm, 120μm, etc., as well as all ranges and subranges between the above values.

[0120] 3) In some embodiments, the drop ball test height of the chemically strengthened glass of the present invention is 1500 mm or more, optionally 1600 mm or more, and more preferably 1700 mm or more. In some embodiments, the drop ball test height of the chemically strengthened glass can be 1500 mm, 1600 mm, 1700 mm, 1800 mm, etc., as well as all ranges and sub-ranges between the above values.

[0121] 4) In some embodiments, the fracture toughness of the chemically strengthened glass of the present invention is 0.7 MPa·m. 1 / 2 The above can be selected as 0.8 MPa·m 1 / 2 The above can also be selected as 0.9 MPa·m 1 / 2 That's all. In some embodiments, the fracture toughness of the chemically strengthened glass is 0.7 MPa·m. 1 / 20.71 MPa·m 1 / 2 0.72 MPa·m 1 / 2 0.73 MPa·m 1 / 2 0.74 MPa·m 1 / 2 0.75 MPa·m 1 / 2 0.76 MPa·m 1 / 2 0.77 MPa·m 1 / 2 0.78 MPa·m 1 / 2 0.79 MPa·m 1 / 2 0.8MPa·m 1 / 2 0.81 MPa·m 1 / 2 0.82MPa·m 1 / 2 0.83 MPa·m 1 / 2 0.84 MPa·m 1 / 2 0.85MPa·m 1 / 2 0.86 MPa·m 1 / 2 0.87 MPa·m 1 / 2 0.88 MPa·m 1 / 2 0.89 MPa·m 1 / 2 0.9 MPa·m 1 / 2 0.91 MPa·m 1 / 2 0.92MPa·m 1 / 2 0.93 MPa·m 1 / 2 0.94 MPa·m 1 / 2 0.95MPa·m 1 / 2 0.96 MPa·m 1 / 2 0.97 MPa·m 1 / 2 0.98 MPa·m 1 / 2 0.99MPa·m 1 / 2 1.0 MPa·m 1 / 2 1.01 MPa·m 1 / 2 1.02 MPa·m 1 / 2 1.03 MPa·m 1 / 2 1.04 MPa·m 1 / 2 1.05 MPa·m 1 / 2 1.06 MPa·m 1 / 2 1.07 MPa·m 1 / 2 1.08 MPa·m 1 / 2 1.09 MPa·m 1 / 2 1.1 MPa·m 1 / 2 And so on, as well as all ranges and subranges between the above values.

[0122] 5) In some embodiments, the four-point flexural strength of the chemically strengthened glass of the present invention is 750 MPa or higher, optionally 780 MPa or higher, and more preferably 820 MPa or higher. In some embodiments, the four-point flexural strength of the chemically strengthened glass is 750 MPa, 755 MPa, 760 MPa, 765 MPa, 770 MPa, 775 MPa, 780 MPa, 785 MPa, 790 MPa, 795 MPa, 800 MPa, 805 MPa, 810 MPa, 815 MPa, 820 MPa, 825 MPa, 830 MPa, 835 MPa, 840 MPa, 845 MPa, 850 MPa, 855 MPa, 860 MPa, 865 MPa, 870 MPa, 875 MPa, 880 MPa, etc., as well as all ranges and subranges between the above values.

[0123] 6) In some embodiments, the Vickers hardness of the chemically strengthened glass of the present invention is 720 kgf / mm. 2 The above can be selected as 730 kgf / mm 2 The above can also be selected as 740kgf / mm 2 That's all. In some embodiments, the Vickers hardness of chemically strengthened glass can be 720 kgf / mm. 2 723 kgf / mm 2 725kgf / mm 2 727kgf / mm 2 730kgf / mm 2 733kgf / mm 2 735kgf / mm 2 737kgf / mm 2 740kgf / mm 2 743 kgf / mm 2 745kgf / mm 2 747kgf / mm 2 750kgf / mm 2 753 kgf / mm 2 755kgf / mm 2 757kgf / mm 2 760kgf / mm 2 763 kgf / mm 2 765kgf / mm 2 767kgf / mm 2 770kgf / mm 2 773 kgf / mm 2 775kgf / mm 2 777kgf / mm 2780kgf / mm 2 783 kgf / mm 2 785kgf / mm 2 787kgf / mm 2 790kgf / mm 2 793 kgf / mm 2 795kgf / mm 2 797kgf / mm 2 800kgf / mm 2 And so on, as well as all ranges and subranges between the above values.

[0124] 7) In some embodiments, the chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88% or more at a wavelength of 400-800 nm, optionally 89% or more, and more preferably 90% or more. The thickness of the chemically strengthened glass can be 0.2-1 mm, more preferably 0.3-0.9 mm, further preferably 0.5-0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm. In some embodiments, chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88%, 88.1%, 88.2%, 88.3%, 88.4%, 88.5%, 88.6%, 88.7%, 88.8%, 88.9%, 89%, 89.1%, 89.2%, 89.3%, 89.4%, 89.5%, 89.6%, 89.7%, 89.8%, 89.9%, 90%, 90.1%, 90.2%, 90.3%, 90.4%, 90.5%, 90.6%, 90.7%, 90.8%, 90.9%, 91%, etc., as well as all ranges and subranges between the above values.

[0125] 8) In some embodiments, the chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89% or more at a wavelength of 550 nm, optionally 90% or more, and even more preferably 91% or more. The thickness of the chemically strengthened glass can be 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, further preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm. In some embodiments, chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89%, 89.1%, 89.2%, 89.3%, 89.4%, 89.5%, 89.6%, 89.7%, 89.8%, 89.9%, 90%, 90.1%, 90.2%, 90.3%, 90.4%, 90.5%, 90.6%, 90.7%, 90.8%, 90.9%, 91%, 91.1%, 91.2%, 91.3%, 91.4%, 91.5%, 91.6%, 91.7%, 91.8%, 91.9%, 92%, etc., as well as all ranges and subranges between the above values.

[0126] 9) In some embodiments, the impact resistance of the chemically strengthened glass of the present invention is 700 mm or more, optionally 800 mm or more, and more preferably 900 mm or more. In some embodiments, the impact resistance of the chemically strengthened glass is 700 mm, 800 mm, 900 mm, 1000 mm, 1100 mm, etc., as well as all ranges and sub-ranges between the above values.

[0127] 10) In some embodiments, the compressive strength of the chemically strengthened glass of the present invention is 1200N or more, optionally 1300N or more, and more preferably 1400N or more. In some embodiments, the compressive strength of the chemically strengthened glass is 1200N, 1210N, 1220N, 1230N, 1240N, 1250N, 1260N, 1270N, 1280N, 1290N, 1300N, 1310N, 1320N, 1330N, 1340N, 1350N, 1360N, 1370N, 1380N, 1390N, 1400N, 1410N, 1420N, 1430N, 1440N, 1450N, 1460N, 1470N, 1480N, 1490N, 1500N, 1510N, 1520N, 1530N, 1540N, 1550N, etc., as well as all ranges and subranges between the above values.

[0128] [Manufacturing methods for glass materials and chemically strengthened glass]

[0129] The manufacturing method of the glass material of this invention is as follows: The glass of this invention is produced using conventional raw materials and processes, including but not limited to using oxides, hydroxides, complex salts (such as carbonates, nitrates, sulfates, etc.), boric acid, etc. as raw materials. After the raw materials are prepared according to conventional methods, the prepared furnace charge is put into a melting furnace (such as a platinum or platinum alloy crucible) at 1300-1600℃ for melting. After clarification and homogenization, a homogeneous molten glass without bubbles and undissolved substances is obtained. This molten glass is then cast in a mold and annealed. Those skilled in the art can appropriately select raw materials, process methods, and process parameters according to actual needs.

[0130] The glass material of the present invention can also be formed by well-known methods. In some embodiments, the glass material described herein can be manufactured into glass preforms by various processes, including but not limited to sheets, lenses, prisms, etc. These processes include, but are not limited to, slot drawing, float glass, roll forming, and other processes known in the art for forming sheets, lenses, and prisms. Alternatively, the glass material can be formed by float glass or roll forming methods known in the art. The glass material and glass preforms of the present invention can have any reasonably useful thickness, shape, or structure, such as 2D, 2.5D, or 3D.

[0131] The glass material of the present invention can be used to manufacture sheet glass preforms by methods such as grinding or polishing, but the method of manufacturing glass preforms is not limited to these methods.

[0132] Glass preforms can be manufactured from the produced glass material using methods such as grinding, hot pressing, or precision stamping. Specifically, glass preforms can be manufactured by machining the glass material, such as grinding and polishing; or by making a preform from the glass material for molding, then hot pressing and grinding the preform; or by precision stamping a preform made through grinding. It should be noted that the methods for preparing glass preforms are not limited to the methods described above.

[0133] Manufacturing methods for chemically strengthened glass:

[0134] The chemically strengthened glass of this invention is obtained by chemically strengthening the glass material or glass preform of this invention. The manufacturing method of the chemically strengthened glass of this invention includes the following steps: 1) forming a glass material; 2) chemically strengthening the glass material, or processing the glass material into a glass preform and then chemically strengthening it. The chemical strengthening process of this invention includes immersing the glass material or glass preform in molten sodium and / or potassium salts at a certain temperature (i.e., the chemical strengthening temperature) for a certain period of time. The sodium salt can be NaNO3, Na2SO4, NaCl, Na2CO3, etc., and the potassium salt can be KNO3, K2SO4, KCl, K2CO3, etc.

[0135] The present invention relates to a method for manufacturing chemically strengthened glass from glass materials or glass preforms, which can employ either a one-step chemical strengthening method (i.e., a one-step chemical strengthening treatment) or a multi-step chemical strengthening method (i.e., a multi-step chemical strengthening treatment). The one-step chemical strengthening method refers to immersing the glass material or glass preform in molten sodium and / or potassium salts once; the multi-step chemical strengthening method refers to immersing the glass material or glass preform in molten sodium and / or potassium salts two or more times, specifically, it can involve two-step, three-step, four-step, five-step chemical strengthening treatments, etc.

[0136] The chemical strengthening treatment of the glass material or glass preform of the present invention can be carried out using a multi-step chemical strengthening method, more preferably a two-step chemical strengthening method, and further preferably by immersing the glass material or glass preform in molten salt containing sodium salt and / or potassium salt for a two-step chemical strengthening treatment. The sodium salt can be selected as NaNO3, and the potassium salt can be selected as KNO3.

[0137] The first step of chemical strengthening involves Li-Na exchange, in which the glass material or preform is immersed in a molten salt containing sodium salt. This molten salt can be pure NaNO3 molten salt or a mixed molten salt composed of NaNO3 and KNO3, or other known common salt bath components and salt bath additives. This first step of chemical strengthening allows for high-stress-depth ion exchange in the glass material, increasing its resistance to fracture, puncture, and crack propagation. For chemical strengthening, higher temperatures result in faster ion diffusion and a deeper stress layer. However, excessively high temperatures can lead to stress relaxation and surface damage from salt bath corrosion, affecting subsequent application performance. Conversely, low temperatures result in slow ion diffusion, a shallow stress layer, and insignificant strengthening effects. Therefore, the first step of chemical strengthening in this invention can be selected at 400–550°C, more preferably 420–520°C, and even more preferably 430–500°C. In some embodiments, the first-step chemical strengthening temperature can be 400℃, 405℃, 410℃, 415℃, 420℃, 425℃, 430℃, 435℃, 440℃, 445℃, 450℃, 455℃, 460℃, 465℃, 470℃, 475℃, 480℃, 485℃, 490℃, 495℃, 500℃, 505℃, 510℃, 515℃, 520℃, 525℃, 530℃, 535℃, 540℃, 545℃, 550℃, etc., as well as all ranges and sub-ranges between these values. Appropriately increasing the chemical strengthening time can increase the stress layer depth and improve the strengthening effect; however, excessively long chemical strengthening times can easily lead to the volatilization and decomposition of the salt bath, causing impurities to adhere to the glass material surface, and significantly reducing the salt bath life. Therefore, the first step of chemical strengthening time in this invention can be selected as 1 to 11 hours, more preferably 1 to 9 hours, and even more preferably 1 to 7 hours. In some embodiments, the first step of chemical strengthening time can be 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 4.5 hours, 5 hours, 5.5 hours, 6 hours, 6.5 hours, 7 hours, 7.5 hours, 8 hours, 8.5 hours, 9 hours, 9.5 hours, 10 hours, 10.5 hours, 11 hours, etc., as well as all ranges and sub-ranges between the above values.

[0138] The second step of chemical strengthening involves Na-K exchange. The glass material or preform, after the first step of chemical strengthening, is immersed in a molten salt containing potassium salts. This molten salt can be pure KNO3 molten salt or a mixed molten salt composed of KNO3 and NaNO3, or other known common salt bath components and salt bath additives. Between the first and second steps of chemical strengthening, the glass material or preform can be cleaned and annealed. This second step of chemical strengthening allows for ion exchange with high surface stress in the glass material, increasing the drop resistance and impact resistance of the chemically strengthened glass. For Na-K chemical strengthening, lower temperatures result in slower ion diffusion in the glass, a lower stress layer, higher surface ion concentration, and easier achievement of high surface compressive stress. However, excessively low strengthening temperatures reduce the ion exchange coefficient of the glass, making it impossible to achieve a usable chemically strengthened stress layer. Excessively high strengthening temperatures lead to stress relaxation, reduced surface compressive stress, and easy volatilization and decomposition of the salt bath, causing impurities to adhere to the glass surface and significantly reducing the salt bath life. Therefore, the second-step chemical strengthening temperature in this invention can be selected as 420–520°C, more preferably 430–500°C, and even more preferably 440–490°C. In some embodiments, the second-step chemical strengthening temperature can be 420°C, 425°C, 430°C, 435°C, 440°C, 445°C, 450°C, 455°C, 460°C, 465°C, 470°C, 475°C, 480°C, 485°C, 490°C, 495°C, 500°C, 505°C, 510°C, 515°C, 520°C, etc., as well as all ranges and sub-ranges between the above values. The shorter the chemical strengthening time, the shallower the stress layer depth and the greater the surface compressive stress. However, if the chemical strengthening time is too short, the strengthening effect will be insignificant, and an effective stress layer will not be obtained. If the chemical strengthening time is too long, it is easy to cause stress relaxation, as well as surface damage and surface deposits due to severe salt bath volatilization and decomposition. Therefore, the glass described in this invention is expected to have a lower strengthening time to obtain a larger surface compressive stress and prevent salt bath deterioration. The second chemical strengthening time of this invention can be selected from 10 minutes to 2.5 hours, more preferably from 20 minutes to 2 hours. In some embodiments, the second chemical strengthening time can be 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes, 1 hour, 1 hour 10 minutes, 1 hour 20 minutes, 1.5 hours, 1 hour 40 minutes, 1 hour 50 minutes, 2 hours, 2 hours 10 minutes, 2 hours 20 minutes, 2.5 hours, etc., as well as all ranges and subranges between the above values.

[0139] [Glass prefabrication and glass components]

[0140] Glass preforms can be manufactured from the produced glass material using methods such as direct drip forming, grinding, or hot pressing. Specifically, glass preforms can be manufactured by directly and precisely dripping molten glass material, by machining such as grinding and polishing, or by hot pressing a preform made from the glass material for compression molding, followed by grinding. It should be noted that the methods for preparing glass preforms are not limited to the methods described above.

[0141] As described above, the glass material and chemically strengthened glass of the present invention are useful for various glass components and optical designs. In particular, the glass material of the present invention can be used to form a preform, which can be used for hot pressing, precision stamping, etc., to manufacture glass components such as lenses and prisms, or the chemically strengthened glass of the present invention can be used to manufacture glass components.

[0142] Both the glass preform and the glass element of the present invention are formed from the glass material or chemically strengthened glass described above. The glass preform of the present invention possesses the excellent properties of the glass material; the glass element of the present invention possesses the excellent properties of the glass material or chemical strengthening properties, and can provide various lenses, prisms, diffraction gratings and other glass elements with high optical value.

[0143] Examples of lenses include concave meniscus lenses, convex meniscus lenses, biconvex lenses, biconcave lenses, plano-convex lenses, plano-concave lenses, and so on, where the lens surface is spherical or aspherical.

[0144] [Glass cover]

[0145] The glass material and chemically strengthened glass of the present invention, due to their superior properties, can be used to make glass covers for use in electronic devices or display devices to protect electronic components in the electronic devices or display devices.

[0146] [equipment]

[0147] The glass materials, chemically strengthened glass, glass covers, glass preforms, and glass elements of this invention, due to their superior properties, can be used to manufacture various types of equipment, such as electronic devices and display devices. These devices include portable electronic devices (such as mobile phones, watches, tablet PCs, translators, etc.), computers, televisions, MTA machines, industrial displays, photographic equipment, video recording equipment, projection equipment, monitoring equipment, and vehicle-mounted equipment, etc., containing the glass materials of this invention and / or chemically strengthened glass and / or glass covers and / or glass preforms and / or glass elements. Furthermore, the devices described in this invention also include touchscreens, protective windows, car windows, train windows, aircraft mechanical windows, solar cells, home appliances, kitchenware, semiconductor wafers, etc., containing the glass materials of this invention and / or chemically strengthened glass and / or glass covers and / or glass preforms and / or glass elements.

[0148] [Example]

[0149] <Examples of Glass Materials>

[0150] To further illustrate and explain the technical solution of the present invention, the following non-limiting embodiments are provided.

[0151] In this embodiment, glass materials with the compositions shown in Tables 1 to 4 were obtained using the glass material manufacturing method described above. Furthermore, the properties of each glass were measured using the testing method described in this invention, and the measurement results are shown in Tables 1 to 4. In this embodiment, the average light transmittance at wavelengths of 400–800 nm and the light transmittance at a wavelength of 550 nm are based on test results of a 0.6 mm thick glass material.

[0152] Table 1.

[0153]

[0154] Table 2.

[0155]

[0156] Table 3.

[0157]

[0158] Table 4.

[0159]

[0160] <Examples of Chemically Strengthened Glass>

[0161] In this embodiment, the glass materials shown in Tables 1 to 4 are processed into chemically strengthened glass using the aforementioned method for manufacturing chemically strengthened glass, resulting in chemically strengthened glass with the properties shown in Tables 5 to 8. The characteristics of each chemically strengthened glass are measured using the testing method described in this invention, and the measurement results are presented in Tables 5 to 8. In this embodiment, the average light transmittance at wavelengths of 400–800 nm and the light transmittance at wavelength of 550 nm are based on the test results of chemically strengthened glass with a thickness of 0.6 mm.

[0162] Table 5.

[0163]

[0164] Table 6.

[0165]

[0166] Table 7.

[0167]

[0168] Table 8.

[0169]

Claims

1. A glass material, characterized in that, Its composition, expressed as a weight percentage, contains: SiO2: 30%–50%; Al2O3: 13%–27%; ZrO2: 1%–12%; Y2O3: 15%–32%; Li2O: 1%–10%.

2. The glass material according to claim 1, characterized in that, Its components, expressed as a weight percentage, also contain: La2O3: 0–8%; and / or Gd2O3: 0–5%; and / or Na2O: 0–3%; and / or K2O: 0–2%; and / or RO: 0–5%; and / or B2O3: 0–4%; and / or TiO2: 0–4%; and / or clarifying agent: 0–2%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

3. A glass material, characterized in that, Its composition, expressed as a weight percentage, is as follows: SiO2: 30%–50%; Al2O3: 13%–27%; ZrO2: 1%–12%; Y2O3: 15%–32%; Li2O: 1%–10%; La2O3: 0–8%; Gd2O3: 0–5%; Na2O: 0–3%; K2O: 0–2%. RO: 0~5%; B2O3: 0~4%; TiO2: 0-4%; Clarifying agent: 0-2% composition, wherein RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

4. The glass material according to any one of claims 1 to 3, characterized in that, Its components are expressed as a weight percentage and meet one or more of the following six conditions: 1) The ZrO2 / Y2O3 ratio is 0.06 to 0.60, and can be selected as 0.10 to 0.58, more preferably 0.13 to 0.48, and even more preferably 0.15 to 0.38; 2) The Li2O / ZrO2 ratio is 0.20 to 3.00, and can be 0.40 to 2.

50. More preferably, it can be 0.45 to 2.00, and even more preferably, it can be 0.50 to 1.

80. 3) The ratio of (Li2O+Y2O3+Al2O3) / SiO2 is 0.80~2.10, and can be selected as 1.00~2.00, or even more preferably 1.20~1.70; 4) The ratio of (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.35~1.00, and optionally (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.40~0.90, and even more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.50~0.80; 5) The Y2O3 / Al2O3 ratio is 0.70 to 2.00, and can be 0.80 to 1.80, or even 0.90 to 1.

50. 6) The SiO2 / (Y2O3+La2O3) ratio is 0.80 to 2.80, and can be 1.00 to 2.20, or even 1.20 to 1.

90.

5. The glass material according to any one of claims 1 to 3, characterized in that, Its components are expressed as weight percentages, including: SiO2: 32%–47%, optionally SiO2: 36%–44%; and / or Al2O3: 16%–25%, optionally Al2O3: 18%–24%; and / or ZrO2: 2%–10%, optionally ZrO2: 3%–8%; and / or Y2O3: 18%–30%, optionally Y2O3: 20%–27%; and / or Li2O: 1.5%–9%, ​​optionally Li2O: 2%–8%; and / or La2O3: 0%–6%, optionally La2O3: 0%–5%; and / or Gd2O3: 0%–3%, optionally Gd2O3: 0%–1%, and optionally none. The formula contains Gd₂O₃; and / or Na₂O: 0–2%, optionally Na₂O: 0–1%; and / or K₂O: 0–1%, optionally K₂O: 0–0.5%; and / or RO: 0–3%, optionally RO: 0–2%; and / or B₂O₃: 0–2%, optionally B₂O₃: 0–1%, or more preferably without B₂O₃; and / or TiO₂: 0–2%, optionally TiO₂: 0–1%; and / or clarifying agent: 0–1%, optionally clarifying agent: 0–0.5%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb₂O₃, SnO₂, and CeO₂.

6. The glass material according to any one of claims 1 to 3, characterized in that, The refractive index of the glass material is 1.56–1.65, optionally 1.57–1.63, and more preferably 1.58–1.61; and / or the drop ball test height is 1400 mm or more, optionally 1500 mm or more, and more preferably 1600 mm or more; and / or the Vickers hardness is 690 kgf / mm. 2 The above can be selected as 700 kgf / mm 2 The above can also be selected as 710kgf / mm 2 The above; and / or a Young's modulus of 95 GPa or higher, optionally 98 Ga or higher, and even more preferably 100 GPa or higher; and / or a coefficient of thermal expansion of 45 × 10⁻⁶. -7 / K~70×10 -7 / K, optional 50×10 -7 / K~65×10 -7 / K, or 53×10 -7 / K~63×10 -7 / K; and / or a density of 3.60 g / cm³ 3 The following can be selected as 3.50g / cm 3 The following is an alternative option: 3.40 g / cm³ 3 The following can be further selected as 2.80~3.30g / cm³. 3 .

7. The glass material according to any one of claims 1 to 3, characterized in that, For glass materials with a thickness of less than 1 mm, the average light transmittance at wavelengths of 400–800 nm is 88% or higher, with an option of 89% or higher, and even more specifically, 90% or higher; and / or for glass materials with a thickness of less than 1 mm, the light transmittance at wavelengths of 550 nm is 89% or higher, with an option of 90% or higher, and even more specifically, 91% or higher.

8. The glass material according to claim 7, characterized in that, The thickness of the glass material is 0.2-1mm, optionally 0.3-0.9mm, more preferably 0.5-0.8mm, and even more preferably 0.55mm, 0.6mm, 0.68mm, 0.7mm, or 0.75mm.

9. A glass precast component, characterized in that, It is made of the glass material described in any one of claims 1 to 8.

10. Chemically strengthened glass, characterized in that, It is made of the glass material described in any one of claims 1 to 8, or of the glass preform described in claim 9.

11. The chemically strengthened glass according to claim 10, characterized in that, The surface stress of the chemically strengthened glass is 400 MPa or higher, optionally 450 MPa or higher, more preferably 480 MPa or higher, and even more preferably 500 MPa or higher; and / or the ion exchange layer depth is 80 μm or higher, optionally 90 μm or higher, more preferably 95 μm or higher, and even more preferably 100 μm or higher; and / or the drop ball test height is 1500 mm or higher, optionally 1600 mm or higher, and even more preferably 1700 mm or higher; and / or the fracture toughness is 0.7 MPa·m. 1 / 2 The above can be selected as 0.8 MPa·m 1 / 2 The above can also be selected as 0.9 MPa·m 1 / 2 The above; and / or a four-point bending strength of 750 MPa or higher, optionally 780 MPa or higher, and even more preferably 820 MPa or higher; and / or a Vickers hardness of 720 kgf / mm². 2 The above can be selected as 730 kgf / mm 2 The above can also be selected as 740kgf / mm 2 The above; and / or drop resistance of 700mm or more, with 800mm or more optional, and 900mm or more optional; and / or compressive strength of 1200N or more, with 1300N or more optional, and 1400N or more optional.

12. The chemically strengthened glass according to claim 10 or 11, characterized in that, Chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88% or more at wavelengths of 400–800 nm, with an optional transmittance of 89% or more, and an optional transmittance of 90% or more; and / or chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89% or more at wavelengths of 550 nm, with an optional transmittance of 90% or more, and an optional transmittance of 91% or more.

13. The chemically strengthened glass according to claim 12, characterized in that, The thickness of the chemically strengthened glass is 0.2-1 mm, optionally 0.3-0.9 mm, more preferably 0.5-0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm.

14. Chemically strengthened glass, characterized in that, Its composition, expressed as a weight percentage, contains: SiO2: 30%–50%; Al2O3: 13%–27%; ZrO2: 1%–12%; Y2O3: 15%–32%; Li2O: 1%–10%.

15. The chemically strengthened glass according to claim 14, characterized in that, Its components, expressed as a weight percentage, also contain: La2O3: 0–8%; and / or Gd2O3: 0–5%; and / or Na2O: 0–3%; and / or K2O: 0–2%; and / or RO: 0–5%; and / or B2O3: 0–4%; and / or TiO2: 0–4%; and / or clarifying agent: 0–2%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

16. Chemically strengthened glass, characterized in that, Its composition, expressed as a weight percentage, is as follows: SiO2: 30%–50%; Al2O3: 13%–27%; ZrO2: 1%–12%; Y2O3: 15%–32%; Li2O: 1%–10%; La2O3: 0–8%; Gd2O3: 0–5%; Na2O: 0–3%; K2O: 0–2%. RO: 0~5%; B2O3: 0~4%; TiO2: 0-4%; Clarifying agent: 0-2% composition, wherein RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

17. The chemically strengthened glass according to any one of claims 14 to 16, characterized in that, Its components are expressed as a weight percentage and meet one or more of the following six conditions: 1) The ZrO2 / Y2O3 ratio is 0.06 to 0.60, and can be selected as 0.10 to 0.58, more preferably 0.13 to 0.48, and even more preferably 0.15 to 0.38; 2) The Li2O / ZrO2 ratio is 0.20 to 3.00, and can be 0.40 to 2.

50. More preferably, it can be 0.45 to 2.00, and even more preferably, it can be 0.50 to 1.

80. 3) The ratio of (Li2O+Y2O3+Al2O3) / SiO2 is 0.80~2.10, and can be selected as 1.00~2.00, or even more preferably 1.20~1.70; 4) The ratio of (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.35~1.00, and optionally (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.40~0.90, and even more preferably (Li2O+ZrO2+Y2O3) / (SiO2+Al2O3) is 0.50~0.80; 5) The Y2O3 / Al2O3 ratio is 0.70 to 2.00, and can be 0.80 to 1.80, or even 0.90 to 1.

50. 6) The SiO2 / (Y2O3+La2O3) ratio is 0.80 to 2.80, and can be 1.00 to 2.20, or even 1.20 to 1.

90.

18. The chemically strengthened glass according to any one of claims 14 to 16, characterized in that, Its components are expressed as weight percentages, including: SiO2: 32%–47%, optionally SiO2: 36%–44%; and / or Al2O3: 16%–25%, optionally Al2O3: 18%–24%; and / or ZrO2: 2%–10%, optionally ZrO2: 3%–8%; and / or Y2O3: 18%–30%, optionally Y2O3: 20%–27%; and / or Li2O: 1.5%–9%, ​​optionally Li2O: 2%–8%; and / or La2O3: 0%–6%, optionally La2O3: 0%–5%; and / or Gd2O3: 0%–3%, optionally Gd2O3: 0%–1%, or preferably without Gd2O3; and / or Na. 2O: greater than 0 but less than or equal to 2%, optional Na2O: greater than 0 but less than or equal to 1%; and / or K2O: greater than 0 but less than or equal to 1%, optional K2O: greater than 0 but less than or equal to 0.5%; and / or RO: 0 to 3%, optional RO: 0 to 2%; and / or B2O3: 0 to 2%, optional B2O3: 0 to 1%, more preferably without B2O3; and / or TiO2: 0 to 2%, optional TiO2: 0 to 1%; and / or clarifying agent: 0 to 1%, optional clarifying agent: 0 to 0.5%, wherein the RO is one or more of MgO, CaO, SrO, BaO, and ZnO, and the clarifying agent is one or more of Sb2O3, SnO2, and CeO2.

19. The chemically strengthened glass according to any one of claims 14 to 16, characterized in that, The surface stress of the chemically strengthened glass is 400 MPa or higher, optionally 450 MPa or higher, more preferably 480 MPa or higher, and even more preferably 500 MPa or higher; and / or the ion exchange layer depth is 80 μm or higher, optionally 90 μm or higher, more preferably 95 μm or higher, and even more preferably 100 μm or higher; and / or the drop ball test height is 1500 mm or higher, optionally 1600 mm or higher, and even more preferably 1700 mm or higher; and / or the fracture toughness is 0.7 MPa·m. 1 / 2 The above can be selected as 0.8 MPa·m 1 / 2 The above can also be selected as 0.9 MPa·m 1 / 2 The above; and / or a four-point bending strength of 750 MPa or higher, optionally 780 MPa or higher, and even more preferably 820 MPa or higher; and / or a Vickers hardness of 720 kgf / mm². 2 The above can be selected as 730 kgf / mm 2 The above can also be selected as 740kgf / mm 2 The above; and / or drop resistance of 700mm or more, with 800mm or more optional, and 900mm or more optional; and / or compressive strength of 1200N or more, with 1300N or more optional, and 1400N or more optional.

20. The chemically strengthened glass according to any one of claims 14 to 16, characterized in that, Chemically strengthened glass with a thickness of less than 1 mm has an average light transmittance of 88% or more at wavelengths of 400–800 nm, with an optional transmittance of 89% or more, and an optional transmittance of 90% or more; and / or chemically strengthened glass with a thickness of less than 1 mm has a light transmittance of 89% or more at wavelengths of 550 nm, with an optional transmittance of 90% or more, and an optional transmittance of 91% or more.

21. The chemically strengthened glass according to claim 20, characterized in that, The thickness of the chemically strengthened glass is 0.2-1 mm, optionally 0.3-0.9 mm, more preferably 0.5-0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.7 mm, or 0.75 mm.

22. A glass element, characterized in that, It is made of the glass material described in any one of claims 1 to 8, or of the glass preform described in claim 9, or of the chemically strengthened glass described in any one of claims 10 to 21.

23. A glass cover plate, characterized in that, It is made of the glass material described in any one of claims 1 to 8, or of the chemically strengthened glass described in any one of claims 10 to 21.

24. A device, characterized in that, It contains the glass material according to any one of claims 1 to 8, or the chemically strengthened glass according to any one of claims 10 to 21, or the glass element according to claim 22, or the glass cover according to claim 23.

25. A method for manufacturing chemically strengthened glass, characterized in that, The method includes the following steps: 1) forming a glass material; 2) chemically strengthening the glass material, or chemically strengthening the glass material after processing it into a glass preform, wherein the chemical strengthening treatment includes immersing the glass material or glass preform in molten sodium salt and / or potassium salt.

26. The method for manufacturing chemically strengthened glass according to claim 25, characterized in that, The chemical strengthening treatment includes a one-step chemical strengthening method or a multi-step chemical strengthening method. Optionally, the chemical strengthening treatment is a multi-step chemical strengthening method, and more preferably, it is a two-step chemical strengthening method. In the two-step chemical strengthening method, the first step involves immersing the glass material or glass preform in a molten salt containing sodium salt. The first step chemical strengthening temperature is 400–550°C, optionally 420–520°C, and more preferably 430–500°C. The first step chemical strengthening time is 1–11 hours, optionally 1–9 hours, and more preferably 1–7 hours. The second step chemical strengthening involves immersing the glass material or glass preform after the first step chemical strengthening in a molten salt containing potassium salt. The second step chemical strengthening temperature is 420–520°C, optionally 430–500°C, and more preferably 440–490°C. The second step chemical strengthening time is 10 minutes to 2.5 hours, optionally 20 minutes to 2 hours.

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