CN115818956A - High-alumina-silica glass and preparation method and application thereof - Google Patents
High-alumina-silica glass and preparation method and application thereof Download PDFInfo
- Publication number
- CN115818956A CN115818956A CN202211328524.4A CN202211328524A CN115818956A CN 115818956 A CN115818956 A CN 115818956A CN 202211328524 A CN202211328524 A CN 202211328524A CN 115818956 A CN115818956 A CN 115818956A
- Authority
- CN
- China
- Prior art keywords
- glass
- strengthening
- alumina
- aluminosilicate glass
- silica glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 104
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 229910018068 Li 2 O Inorganic materials 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000005728 strengthening Methods 0.000 claims description 36
- 150000003839 salts Chemical class 0.000 claims description 26
- 239000011734 sodium Substances 0.000 claims description 25
- 238000003426 chemical strengthening reaction Methods 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 229910052708 sodium Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000005354 aluminosilicate glass Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000013001 point bending Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- 235000010344 sodium nitrate Nutrition 0.000 claims description 4
- 239000004317 sodium nitrate Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000006059 cover glass Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 24
- 238000005342 ion exchange Methods 0.000 abstract description 11
- 239000005345 chemically strengthened glass Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- 239000006018 Li-aluminosilicate Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910006655 Li—K Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006025 fining agent Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006058 strengthened glass Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Glass Compositions (AREA)
Abstract
The invention discloses high-alumina-silica glass and a preparation method and application thereof, belonging to the technical field of glass, wherein the glass comprises the following raw materials in percentage by mole of oxides: siO 2 2 ，58～70％；Al 2 O 3 ，8～18％；Li 2 O，5～11％；Na 2 O，5～14％；K 2 O，0～2.5％；ZnO，0～2.5％；P 2 O 5 0.5 to 7 percent; 0 to 0.2 percent of SnO. The high-alumina-silica glass is prepared by designing and adjusting chemical composition and adding P into a formula 2 O 5 The ion exchange is more efficient, and the chemically strengthened glass has higher mechanical strength and better shock resistance, and is suitable for various protective glass for display.
Description
Technical Field
The invention belongs to the technical field of glass, and particularly relates to high-alumina-silica glass and a preparation method and application thereof.
Background
With the rapid development of the electronic display industry, the application fields of electronic glass and intelligent glass such as electronic display substrates, cover plates, light guide plates and the like are increasingly wide, and the requirements of users on the performance of products are also increasingly high. Chemical strengthening is one of the important ways to improve the glass properties, and can improve the mechanical strength, wear resistance, thermal stability and chemical stability of the glass and reduce the brittleness of the glass surface. The cover plate glass is an important component of the display panel of the electronic product, and plays a role in supporting and protecting the display panel.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide high-alumina-silica glass and a preparation method and application thereof, wherein the high-alumina-silica glass has high mechanical strength, high impact resistance, high wear resistance, high thermal stability, high chemical stability and high damage resistance.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the invention provides high alumina-silica glass, which comprises the following raw materials in percentage by mole: siO 2 2 ，58～70％；Al 2 O 3 ，8～18％；Li 2 O，5～11％；Na 2 O，5～14％；K 2 O，0～2.5％；ZnO，0～2.5％；P 2 O 5 ，0.5～7％；SnO，0～0.2％。
Further in the present invention, the Li 2 O，Na 2 O and K 2 Sum of mole percent of O and Al 2 O 3 The mole percentage ratio of (1) to (2) is 1.
Further in the present invention, the Li 2 O，Na 2 O and K 2 The sum of the mole percentages of O is more than or equal to Al 2 O 3 And P 2 O 5 Sum of mole percent (c)。
Further, in the present invention, the Al 2 O 3 And P 2 O 5 The sum of the mole percentages of the components is 8 to 23 percent.
Further, the thickness of the high alumina-silica glass is 0.4-2 mm.
Furthermore, the compressive stress CS generated on the surface of the high-alumina-silica glass is more than 800MPa, the compressive stress layer DOL is more than 100 μm, the four-point bending strength is more than 700MPa, and the impact strength is more than 0.25J.
The preparation method of any one of the high alumina silica glass comprises the following steps:
s1: mixing the raw materials to obtain a mixture, and then heating and melting, clarifying, homogenizing, molding and annealing the mixture to obtain a glass sample block;
s2: and the high-alumina-silica glass is obtained by performing linear cutting, CNC, grinding, polishing and chemical strengthening on the glass sample block.
Further, in the step S2, the chemical strengthening includes a first strengthening and a second strengthening; the first-time strengthened mixed molten salt consists of 30-100 wt% of sodium nitrate and 0-70 wt% of potassium nitrate; the mixed molten salt for the second strengthening consists of 0 to 20 weight percent of sodium nitrate and 80 to 100 weight percent of potassium nitrate.
Further, the temperature of the first strengthening is 380-470 ℃, and the time of the first strengthening is 1.5-6 h; the temperature of the second strengthening is 370-460 ℃, and the time of the second strengthening is 0.5-3 h.
The invention further discloses an application of the high-alumina-silica glass, and the Gao Lvgui glass is used as protective cover plate glass of an electronic display panel.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses high-alumina-silica glass, which comprises SiO 2 、Al 2 O 3 、Li 2 O、Na 2 O、K 2 O、ZnO、P 2 O 5 SnO by adjusting the content of each component and chemical fining agentsThe dosage of the high-alumina-silica glass ensures that the high-alumina-silica glass has higher mechanical strength, better impact resistance, good wear resistance, thermal stability and chemical stability. Wherein, P 2 O 5 Belonging to the group of glass network formers oxides, with [ PO ] 4 ]The tetrahedrons are connected to form a network, and belong to a layered structure, so that the ion exchange in chemical strengthening is facilitated, and the damage resistance is realized. But a higher content of P 2 O 5 Is not favorable for the chemical stability of the glass surface and increases the tendency of glass to devitrify. Taken together, the invention P 2 O 5 The content range is controlled to be 0.5-7 mol%. Adding Li into high-alumina-silica glass 2 O、Na 2 O and K 2 O, in order to be chemically strengthened to obtain better mechanical strength and impact resistance. When alkali metals are added to the glass, the connection between silicon-oxygen tetrahedrons is promoted to break, non-bridging oxygen appears, and the network structure of the glass becomes loose, so that a series of properties are deteriorated. But Al is added to the glass 2 O 3 Then, al 3+ Non-bridging oxygen can be captured to form alundum tetrahedron to enter a network structure, and broken nets are connected again, so that the glass structure tends to be compact, and a series of properties of the glass are improved. According to the invention, through the specific combination of the components, the high-alumina-silica glass with excellent comprehensive performance is obtained, and the glass is better used as a glass cover plate to protect an intelligent terminal product while the chemical strengthening of the glass is improved.
The invention provides a preparation method of high-alumina-silica glass, which comprises two steps of chemical strengthening, wherein small ions in the glass and large ions in a salt bath are subjected to ion exchange to generate Compressive Stress (CS) and a compressive stress layer (DOL) on the surface of the glass, so that the mechanical strength and the impact resistance of the glass are further improved.
The Gao Lvgui glass has large surface compressive stress and large thickness of a compressive stress layer after secondary strengthening, has higher four-point bending strength and better impact strength, can reduce damage and avoid the conditions of display panel damage and surface scratch when used as the protective cover plate glass of the electronic display panel, and has good application prospect.
Detailed Description
To make the features and effects of the present invention comprehensible to those skilled in the art, general description and definitions are made below with reference to terms and expressions mentioned in the specification and claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The theory or mechanism described and disclosed herein, whether correct or incorrect, should not limit the scope of the present invention in any way, i.e., the present disclosure may be practiced without limitation to any particular theory or mechanism.
All features defined herein as numerical ranges or percentage ranges, such as values, amounts, levels and concentrations, are provided for brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to cover and specifically disclose all possible subranges and individual numerical values (including integers and fractions) within the range.
In this document, unless otherwise specified, "comprising," including, "" containing, "" having, "or the like, means" consisting of … … "and" consisting essentially of … …, "e.g.," a comprises a "means" a comprises a and the other "and" a comprises a only.
In the present context, for the sake of brevity, all possible combinations of various features in various embodiments or examples are not described. Therefore, the respective features in the respective embodiments or examples may be arbitrarily combined as long as there is no contradiction between the combinations of the features, and all the possible combinations should be considered as the scope of the present specification.
The invention provides high alumina-silica glass and a preparation method and application thereof.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The following examples use instrumentation conventional in the art. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out under conventional conditions or conditions recommended by the manufacturers. The various starting materials used in the examples which follow, unless otherwise indicated, are conventional commercial products having specifications which are conventional in the art.
To facilitate a better understanding of the chemical composition of the various oxides of the lithium aluminosilicate glass formulations of the present invention, the chemical composition of the various oxides in the examples is further illustrated below:
SiO 2 belongs to a glass network former, [ SiO ] 4 ]Tetrahedra are the basic framework that constitutes the network framework of glass. SiO 2 2 Can improve the mechanical strength, chemical stability, thermal stability and the like of the glass. If SiO 2 The content is less than 58mol%, the glass is not easy to form, the thermal expansion coefficient is increased, the strain point is reduced, and the chemical stability of the glass is poor. If SiO 2 The content is more than 70%, the high-temperature viscosity of the glass is increased, the melting temperature is overhigh, meanwhile, the proportion of the silica skeleton structure is higher, the network gap is smaller, the ion exchange in the chemical strengthening process is not facilitated, and the chemical strengthening efficiency is influenced. Thus, the SiO of the invention 2 The content range is controlled to be 58-70 mol%.
Al 2 O 3 Belongs to a glass network intermediate, and Al is contained when the content of alkali metal in the glass is more 3+ Tends to be vitreotetrahedral AlO 4 ]Which is greater than silicon oxygen tetrahedron [ SiO ] 4 ]The network is much larger, and the larger network gap is beneficial to ion exchange in the chemical strengthening process. Further, al 2 O 3 But also can reduce the crystallization tendency of the glass and improve the thermal stability, chemical stability, mechanical strength and hardness of the glass. But Al 2 O 3 Too high a content also increases the high temperature viscosity of the glass significantly, making the glass difficult to melt. Therefore, thisInventive Al 2 O 3 The content range is controlled to be 8-18 mol%.
Li 2 O is used as a fluxing agent, can obviously reduce the high-temperature viscosity at high temperature, and improves the meltability and the formability of the glass. Meanwhile, the glass is one of important compositions and ion exchange components of high-alumina-silica-glass. Li 2 When the content of O is high, not only the cost for manufacturing the glass is increased and the thermal expansion coefficient of the glass is obviously increased, but also Li + The devitrification tendency of the glass is increased by the accumulation of (a) so that the glass is susceptible to devitrification. Thus, li according to the invention 2 The content of O is controlled within the range of 5 to 11mol%.
Na 2 O belongs to the oxide of the outer body of the glass network and can provide free oxygen to destroy the network structure of the glass, thereby reducing the viscosity and the melting temperature of the aluminosilicate glass. Further, na 2 O is an important element for ion exchange in chemical strengthening. When Na is present 2 Too high content of O increases thermal expansion coefficient and decreases chemical stability, and Na 2 The volatility of O results in non-uniform glass composition. When Na is present 2 The content of O is too low to facilitate the melting and forming of the glass and Na + And K + So that the purpose of enhancing the mechanical strength of the glass cannot be achieved. Taken together, the invention Na 2 The content of O is controlled within the range of 5 to 14mol%.
K 2 O and Na 2 O is an alkali metal oxide and acts similarly in the glass structure. In addition, with Na 2 The 'mixed alkali effect' exists between the O and has a certain effect on improving a series of performances of the glass. In the invention K 2 The content of O is 0-2.5 mol%.
ZnO belongs to the glass network intermediate, and when the 'free oxygen' in the glass is enough, [ ZnO ] can be formed 4 ]So that the structure of the glass tends to be more stable. Proper amount of ZnO can reduce the thermal expansion coefficient of the glass and improve the chemical stability, the thermal stability and the like of the glass. However, there is also a significant hindrance to the ion exchange during the chemical strengthening process. Therefore, the content of ZnO in the present invention is controlled to be 0 to 2.5mol%.
P 2 O 5 Belonging to the glass network former oxide group [ PO ] 4 ]The tetrahedrons are connected to form a network, and belong to a layered structure, so that the ion exchange in chemical strengthening is facilitated, and the damage resistance is realized. But a higher content of P 2 O 5 Is not good for the chemical stability of the glass surface and increases the tendency of the glass to devitrify. Taken together, the invention P 2 O 5 The content range is controlled to be 0.5-7 mol%.
In addition to the oxides described above, the glasses of the present invention contain chemical fining agents, wherein the SnO content is controlled to be between about 0 and 0.2mol%.
The high-alumina-silica glass also comprises lithium which is a component element and an ion exchange component of the dual-strength glass; the glass contains at least two alkali metal oxides, R 2 O is Li in glass composition 2 O，Na 2 O and K 2 Sum of mole percent of O, and R 2 O/Al 2 O 3 Is 1: (1-2); al (Al) 2 O 3 And P 2 O 5 The mole percentage of Al in between 2 O 3 +P 2 O 5 8 to 23mol%, and Al 2 O 3 +P 2 O 5 ≤R 2 O。
Adding Li into high-alumina-silica glass 2 O、Na 2 O and K 2 O, in order to be chemically strengthened to obtain better mechanical strength and impact resistance. When alkali metal is added into glass, the connection between silicon-oxygen tetrahedrons is promoted to break, non-bridge oxygen is generated, so that the network structure of the glass becomes loose, and a series of properties are deteriorated. But Al is added to the glass 2 O 3 Then, al 3+ Non-bridging oxygen can be captured to form alundum tetrahedron to enter a network structure, and broken nets are connected again, so that the glass structure tends to be compact, and a series of properties of the glass are improved.
In addition, the present invention employs NaNO 3 And KNO 3 The mixed molten salt carries out two-step chemical strengthening on the high-alumina-silicon glass, and small ions in the glass and large ions in the salt bath are used for carrying out ion exchange so as to generate Compressive Stress (CS) and compressive stress on the surface of the glassForce layer (DOL). I.e. Li in glass + And Na + With Na in the salt bath + And K + Li-Na, na-K and a small amount of Li-K exchange are carried out to form a compressive stress layer on the surface of the glass, thereby increasing the mechanical strength and the impact resistance of the glass.
According to the invention, through the specific combination of the components, the high-alumina-silica glass with excellent comprehensive performance is obtained, and the glass is better used as a glass cover plate to protect an intelligent terminal product while the chemical strengthening of the glass is improved.
In order to achieve the purpose, the invention provides high-alumina-silica glass which comprises the following components in percentage by mole of oxides:
SiO 2 ，58～70％、Al 2 O 3 ，8～18％、Li 2 O，5～11％、Na 2 O，5～14％、K 2 O，0～2.5％、ZnO，0～2.5％、P 2 O 5 0.5 to 7 percent of SnO,0 to 0.2 percent of R 2 O is Li in glass composition 2 O，Na 2 O and K 2 Sum of mole percent of O, and R 2 O/Al 2 O 3 Is 1 (1-2);
Al 2 O 3 and P 2 O 5 The mole percentage of Al in between 2 O 3 +P 2 O 5 8 to 23mol%, and Al 2 O 3 +P 2 O 5 ≤R 2 O。
The invention provides a preparation method of high-alumina-silica glass, which comprises the following steps:
(1) The high-alumina-silica glass comprises the following chemical compositions in percentage by mole of oxides:
SiO 2 ，58～70％、Al 2 O 3 ，8～18％、Li 2 O，5～11％、Na 2 O，5～14％、K 2 O，0～2.5％、ZnO，0～2.5％、P 2 O 5 ，0.5～7％、SnO，0～0.2％；
(2) Uniformly mixing the glass components in the step (1), and then carrying out high-temperature melting, clarification, homogenization, molding and annealing to obtain a glass sample block;
(3) Performing linear cutting, CNC (computer numerical control), grinding and polishing on the glass sample block in the step (2) to obtain the size of a required glass sample, wherein the thickness of the glass sample is 0.4-2 mm optionally;
(4) Performing primary chemical strengthening and secondary chemical strengthening on the glass sample in the step (3), wherein the primary strengthening is performed in mixed molten salt at the temperature of 380-470 ℃ and the strengthening time is 1.5-6 h; the secondary strengthening is carried out in mixed molten salt at 370-460 ℃, and the strengthening time is 0.5-3 h.
Wherein NaNO is first strengthened 3 The salt concentration is 30-100 wt%, and the rest is KNO 3 Salt; secondary strengthening KNO 3 The salt concentration is 80-100 wt%, and the rest is NaNO 3 And (3) salt.
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Example 1
The high-alumina-silica glass is prepared according to the following steps:
(1) The high-alumina-silica glass comprises the following chemical compositions in percentage by mole of oxides:
SiO 2 ，62.10％、Al 2 O 3 ，15.51％、Li 2 O，7.80％、Na 2 O，10.90％、K 2 O，0％、ZnO，1.05％、P 2 O 5 ，2.55％、SnO，0.09％；
(2) Uniformly mixing the glass components in the step (1), and then carrying out high-temperature melting, clarification, homogenization, molding and annealing to obtain a glass sample block;
(3) Performing linear cutting, CNC (computer numerical control), grinding and polishing on the glass sample block in the step (2) to obtain the size of a required glass sample, wherein optionally the thickness of the glass sample is 0.7mm;
(4) Performing primary chemical strengthening and secondary chemical strengthening on the glass sample in the step (3), wherein the primary strengthening is performed in mixed molten salt at 390 ℃, and the strengthening time is 2.5h; the secondary strengthening is carried out in mixed molten salt at 380 ℃, and the strengthening time is 0.75h.
Wherein NaNO is first strengthened 3 The salt concentration was 36wt%, the remainder was KNO 3 The salt concentration was 64wt%; secondary strengthening KNO 3 The salt concentration was 97wt%, the remainder was NaNO 3 The salt concentration was 3wt%.
Example 2
The high-alumina-silica glass is prepared according to the following steps:
(1) The high-alumina-silica glass comprises the following chemical compositions in percentage by mole of oxides:
SiO 2 ，62.10％、Al 2 O 3 ，15.51％、Li 2 O，7.80％、Na 2 O，10.90％、K 2 O，0％、ZnO，1.05％、P 2 O 5 ，2.55％、SnO，0.09％；
(2) Uniformly mixing the glass components in the step (1), and then carrying out high-temperature melting, clarification, homogenization, molding and annealing to obtain a glass sample block;
(3) Performing linear cutting, CNC (computer numerical control), grinding and polishing on the glass sample block in the step (2) to obtain the size of a required glass sample, wherein optionally the thickness of the glass sample is 0.8mm;
(4) Performing primary chemical strengthening and secondary chemical strengthening on the glass sample in the step (3), wherein the primary strengthening is performed in mixed molten salt at 390 ℃ and the strengthening time is 2.5h; the secondary strengthening is carried out in mixed molten salt at 380 ℃, and the strengthening time is 0.75h.
Wherein NaNO is first strengthened 3 The salt concentration is 36wt%, and the remainder is KNO 3 The salt concentration was 64wt%; secondary strengthening KNO 3 The salt concentration was 97wt%, the remainder was NaNO 3 And (3) salt.
The four-point bending strength of the glass is tested by a strengthened glass sample through a WBE-9000C bending strength testing machine, the falling ball bearing height of the glass is tested by a WH-2104-A full-automatic falling ball impact testing machine, 64g of steel ball is adopted, five points are carried out once, if the sample is not broken, the height is increased by 100mm each time, and limit test is carried out. The test results are shown in the following table.
The remaining examples are the same as the procedure of example 1, with the parameters used being referred to the data in the tables, as shown in tables 1 to 6.
TABLE 1 chemical composition, strengthening Process and Properties of the high-Al silicate glasses of the examples
TABLE 2 chemical composition, strengthening Process and Properties of the high AlSi glasses of the examples
TABLE 3 chemical composition, strengthening Process and Properties of the high AlSi glasses of the examples
TABLE 4 chemical composition, strengthening Process and Properties of the high-Al silicate glasses of the examples
TABLE 5 chemical composition, strengthening Process and Properties of the high alumina silica glass of each example
TABLE 6 chemical composition, strengthening Process and Properties of the high alumina silica glass of each example
From the above examples, it can be seen that the high-alumina-silica glass according to the present invention, after being secondarily strengthened, has a compressive stress CS of not less than 800MPa, a compressive stress layer DOL of not less than 100 μm, a high four-point bending strength of not less than 700MPa, and a good impact strength of not less than 0.25J, and is preferably suitable for various protective glasses for display.
The above examples are merely alternative embodiments of the present invention, which have been described in detail without limiting the invention to the described embodiments, and it is apparent that many modifications and variations are possible in light of the teaching of this specification. Therefore, the technical solution of the present invention and the concept thereof should be equally replaced or changed to cover the protection scope of the present invention.
Claims (10)
1. The high-alumina-silica glass is characterized in that the raw materials comprise the following components in percentage by mol: siO 2 2 ，58～70％；Al 2 O 3 ，8～18％；Li 2 O，5～11％；Na 2 O，5～14％；K 2 O，0～2.5％；ZnO，0～2.5％；P 2 O 5 ，0.5～7％；SnO，0～0.2％。
2. The high aluminosilicate glass according to claim 1, wherein the Li is Li 2 O，Na 2 O and K 2 Sum of mole percent of O and Al 2 O 3 The ratio of the mole percent of (A) to (B) is 1 (1-2).
3. The high aluminosilicate glass according to claim 1, wherein the Li is Li 2 O，Na 2 O and K 2 The sum of the mole percentages of O is more than or equal to Al 2 O 3 And P 2 O 5 Sum of mole percent (c).
4. The high alumina silica glass according to claim 1, wherein the Al is 2 O 3 And P 2 O 5 The sum of the mole percentages of the components is 8 to 23 percent.
5. The high aluminosilicate glass according to claim 1, wherein the high aluminosilicate glass has a thickness of 0.4 to 2mm.
6. The high aluminosilicate glass according to claim 1, wherein a compressive stress CS generated on the surface of the high aluminosilicate glass is greater than 800MPa, a compressive stress layer DOL is greater than 100 μm, a four-point bending strength is greater than 700MPa, and an impact strength is greater than 0.25J.
7. The method for producing a high aluminosilicate glass according to any one of claims 1 to 6, comprising the steps of:
s1: mixing the raw materials to obtain a mixture, and then heating, melting, clarifying, homogenizing, forming and annealing the mixture to obtain a glass sample block;
s2: and the high-alumina-silica glass is obtained by performing linear cutting, CNC, grinding, polishing and chemical strengthening on the glass sample block.
8. The method according to claim 7, wherein in S2, the chemical strengthening includes a first strengthening and a second strengthening; the first-time strengthened mixed molten salt consists of 30-100 wt% of sodium nitrate and 0-70 wt% of potassium nitrate; the mixed molten salt for the second strengthening consists of 0 to 20 weight percent of sodium nitrate and 80 to 100 weight percent of potassium nitrate.
9. The preparation method according to claim 8, wherein the temperature of the first strengthening is 380-470 ℃, and the time of the first strengthening is 1.5-6 h; the temperature of the second strengthening is 370-460 ℃, and the time of the second strengthening is 0.5-3 h.
10. Use of a high aluminosilicate glass according to any one of claims 1 to 6, wherein the Gao Lvgui glass is used as a protective cover glass for an electronic display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211328524.4A CN115818956A (en) | 2022-10-26 | 2022-10-26 | High-alumina-silica glass and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211328524.4A CN115818956A (en) | 2022-10-26 | 2022-10-26 | High-alumina-silica glass and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115818956A true CN115818956A (en) | 2023-03-21 |
Family
ID=85525652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211328524.4A Pending CN115818956A (en) | 2022-10-26 | 2022-10-26 | High-alumina-silica glass and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115818956A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591538A (en) * | 2014-12-23 | 2015-05-06 | 中国南玻集团股份有限公司 | Aluminosilicate glass, aluminosilicate glass reinforcing method and reinforced aluminosilicate glass |
| CN104803601A (en) * | 2015-04-08 | 2015-07-29 | 四川旭虹光电科技有限公司 | High aluminum strengthened cover glass composition and manufacturing technology thereof |
| CN108585480A (en) * | 2018-07-10 | 2018-09-28 | 科立视材料科技有限公司 | A kind of two step method chemical strengthening alkali aluminum silicate glass composition and preparation method thereof |
| CN110028240A (en) * | 2019-04-16 | 2019-07-19 | 醴陵旗滨电子玻璃有限公司 | A kind of alumina silicate glass and preparation method thereof |
| CN110436788A (en) * | 2019-08-21 | 2019-11-12 | 成都光明光电股份有限公司 | Devitrified glass, crystallized glass article and its manufacturing method |
| CN110615610A (en) * | 2019-10-10 | 2019-12-27 | 清远南玻节能新材料有限公司 | Lithium-zirconium aluminosilicate glass, tempered glass, preparation methods of lithium-zirconium aluminosilicate glass and tempered glass, and display device |
| CN111825345A (en) * | 2020-07-02 | 2020-10-27 | 清远南玻节能新材料有限公司 | Chemical strengthening method of glass, strengthened glass, application and display device |
| CN111995243A (en) * | 2020-09-04 | 2020-11-27 | 彩虹集团（邵阳）特种玻璃有限公司 | High-strength and low-brittleness aluminosilicate glass and strengthening method and application thereof |
| CN112010552A (en) * | 2020-09-04 | 2020-12-01 | 彩虹集团（邵阳）特种玻璃有限公司 | Aluminosilicate glass and strengthening method thereof |
-
2022
- 2022-10-26 CN CN202211328524.4A patent/CN115818956A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591538A (en) * | 2014-12-23 | 2015-05-06 | 中国南玻集团股份有限公司 | Aluminosilicate glass, aluminosilicate glass reinforcing method and reinforced aluminosilicate glass |
| CN104803601A (en) * | 2015-04-08 | 2015-07-29 | 四川旭虹光电科技有限公司 | High aluminum strengthened cover glass composition and manufacturing technology thereof |
| CN108585480A (en) * | 2018-07-10 | 2018-09-28 | 科立视材料科技有限公司 | A kind of two step method chemical strengthening alkali aluminum silicate glass composition and preparation method thereof |
| CN110028240A (en) * | 2019-04-16 | 2019-07-19 | 醴陵旗滨电子玻璃有限公司 | A kind of alumina silicate glass and preparation method thereof |
| CN110436788A (en) * | 2019-08-21 | 2019-11-12 | 成都光明光电股份有限公司 | Devitrified glass, crystallized glass article and its manufacturing method |
| CN110615610A (en) * | 2019-10-10 | 2019-12-27 | 清远南玻节能新材料有限公司 | Lithium-zirconium aluminosilicate glass, tempered glass, preparation methods of lithium-zirconium aluminosilicate glass and tempered glass, and display device |
| CN111825345A (en) * | 2020-07-02 | 2020-10-27 | 清远南玻节能新材料有限公司 | Chemical strengthening method of glass, strengthened glass, application and display device |
| CN111995243A (en) * | 2020-09-04 | 2020-11-27 | 彩虹集团（邵阳）特种玻璃有限公司 | High-strength and low-brittleness aluminosilicate glass and strengthening method and application thereof |
| CN112010552A (en) * | 2020-09-04 | 2020-12-01 | 彩虹集团（邵阳）特种玻璃有限公司 | Aluminosilicate glass and strengthening method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022048377A1 (en) | Aluminosilicate glass having high strength and low brittleness, strengthening method therefor, and application thereof | |
| JP5444846B2 (en) | Glass plate for display device | |
| EP4043413A1 (en) | Lithium-zirconium-based aluminosilicate glass, reinforced glass, preparation method therefor and display device | |
| KR20190022707A (en) | Chemically temperable glass plate | |
| KR20160138015A (en) | Chemically temperable glass sheet | |
| KR20170139005A (en) | Chemically temperable glass plate | |
| EP1893540B1 (en) | High strain-point glass composition for substrate | |
| JPWO2009028570A1 (en) | Glass plate, method for producing the same, and method for producing TFT panel | |
| JP7466729B2 (en) | Electronic grade glass fiber composition, glass fiber and electronic grade glass fiber fabric | |
| US8324124B2 (en) | Glass substrate and its production process | |
| CN102617034B (en) | Formula and application of photovoltaic glass | |
| CN111646693B (en) | Low-dielectric-constant and low-loss lithium-aluminum silicate glass, and preparation method and application thereof | |
| JPWO2009060871A1 (en) | Glass plate for substrate | |
| CN110028240B (en) | Aluminosilicate glass and preparation method thereof | |
| JP2013119517A (en) | Phosphate optical glass | |
| CN109320069A (en) | High lead glass and preparation method thereof, intelligent terminal, display and solar battery | |
| CN101863617B (en) | Optical glass and optical element | |
| CN104326664B (en) | A kind of alumina silicate glass containing germanium oxide and gallium oxide | |
| CN113683303B (en) | Alkali aluminosilicate glass and application thereof | |
| CN104003615A (en) | Environmentally friendly optical glass, glass preform, optical element and optical instrument | |
| CN112919802B (en) | High-strength flexible radiation-resistant glass and preparation method thereof | |
| CN111018346A (en) | Low-viscosity high-alumina glass and preparation method and application thereof | |
| CN109020196A (en) | A kind of chemically reinforced glass being easy to ion exchange | |
| WO2014115789A1 (en) | Glass material for chemical strengthening, chemically strengthened glass and cover glass | |
| JP4410354B2 (en) | Li-absorbing glass for chemical strengthening, and method for producing chemically strengthened glass using Li-absorbing glass for chemical strengthening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |