CN104326666A - Raw material formula of aluminosilicate glass protective cover plate used for display device - Google Patents
Raw material formula of aluminosilicate glass protective cover plate used for display device Download PDFInfo
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- CN104326666A CN104326666A CN201310749568.9A CN201310749568A CN104326666A CN 104326666 A CN104326666 A CN 104326666A CN 201310749568 A CN201310749568 A CN 201310749568A CN 104326666 A CN104326666 A CN 104326666A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a raw material formula of an aluminosilicate glass protective cover plate used for a display device. A raw material formula comprises the following chemical components by mass: 55-65% of SiO2, 10-18% of Al2O3, 9-16% of Na, 2-10% of B2O3, 0.1-5% of CaO, 0.1-5% of MgO and 0.1-3% of ZrO2. By introducing 0.1-3% of ZrO2, strength and wear resistance of the glass are enhanced; by co-using Al2O3 and ZrO2, exchange velocity and depth of sodium and potassium ions are improved and a glass reinforcement effect is relatively good; and by introducing 2-10% of B2O3, a great amount of B exists in a glass structure in a trigonal form, brittleness of the glass is reduced, good channels are provided for subsequent reinforcement and the strength of the reinforcement glass is increased.
Description
Technical field
The invention belongs to field of glass production technology; relate to a kind of screen surface protection glass material showing product; as can be used for the protection of plasm TV, LCD TV, panel computer, notebook computer liquid-crystal display, touch-screen mobile phone etc.; specifically there is an outstanding mechanical property, the aluminosilicate system frit formula of good shock resistance and adhesion strength.
Background technology
Along with the development of technique of display, mobile telephone, PDA, digital camera etc. all can see touch screen.In use come in contact and rub, adding casual delineation, touch, consequent cut directly causes display screen surface coarse, and smooth finish declines, and affects result of use, more likely causes screen to break.
Glass is material indispensable in technique of display development always; the intensity of glass can be improved by the composition of chemical tempering change glass surface; make glass applications in the protection of display device, but in use, also can be subject to unavoidably impacting threat that is damaged and surface tear.
Product main flow is touched along with the development of touch panel technique, particularly Incell, OGS become, higher to the requirement of corresponding cover-plate glass, need glass lightening, there is higher intensity, wear resistance, shock resistance simultaneously.
Summary of the invention
The present invention is in order to comply with market the demand to cover sheet glass; provide a kind of composition of raw materials of display device alumina silicate glass cover sheet; this glass is more suitable for chemical intensification treatment; glass reinforced rear surface hardness is high; there is excellent anti-scratch performance and wear resisting property, the shock resistance of screen surface can be protected and scratch infringement.
The technical solution used in the present invention is: a kind of composition of raw materials of display device alumina silicate glass cover sheet, and key is: in described composition of raw materials, the mass percentage of each chemical composition is:
SiO
255~65%，
Al
2O
310~18%，
Na
2O 9~16%，
B
2O
32~10%，
CaO 0.1~5%，
MgO 0.1~5%，
ZrO
20.1~3%。
Preferably, described SiO
2content is 58-62%.
Preferably, described Al
2o
3content is 13-17%.
Preferably, described Na
2o content is 12-14%.
Preferably, described B
2o
3content is 4-7%.
Preferably, described CaO content is 1.5-3%.
Preferably, described content of MgO is 1.5-3%.
Preferably, described ZrO
2content is 0.5-2%.
Be more preferably, described ZrO
2content is 0.8-1.8%.
The invention has the beneficial effects as follows: (1) the present invention introduces ZrO between 0.1-3%
2, increase intensity and the wear resistance of glass, Al
2o
3, ZrO
2and use, improve sodium, potassium ion exchange velocity and the degree of depth, glass reinforced effectiveness comparison is good; (2) B between 2-10% is introduced
2o
3, a large amount of B exists in glass structure with the form of triangle body, reduces the fragility of glass, for subsequent reinforced provides good passage, increases the intensity of chilled glass; (3) glass utilizing the present invention to obtain is at the KNO of melting
3in (400 DEG C-450 DEG C) solution, the chemical enhanced time is 4-7 hour, and ion exchange depth is greater than 45 μm, and glass surface stress at least can reach 850MPa within a short period of time; Glass surface forms compressive stress layer, and compressive stress layer gives the higher intensity of glass, surface is scratch resistant scratch-resistant.
Embodiment
Be described the composition that can contain in glass formula of the present invention below, the containing ratio of each composition represents with weight percent.
Introducing maximum compositions in glass ingredient of the present invention is SiO
2, this composition is the composition forming glass skeleton, and the raising of content can contribute to glass lightweight, and chemical-resistant improves; SiO
2content is higher, can increase the high temperature viscosity of glass, is unfavorable for producing, therefore SiO
2content is chosen as 55-65%, more preferably 58-62%.
Al
2o
3introduce 10-18%, preferred Al
2o
3content is 13-17%.High-content Al
2o
3the improvement contributing to strain point, bending strength, to the strength of glass after chemical tempering, there is good promoter action.This is because glass of the present invention belongs to aluminosilicate system, the non-bridging oxygen that basic metal is introduced and Al
3+form aluminum-oxygen tetrahedron, this volume ratio silicon-oxy tetrahedron large, in glass structure, produce larger gap, be conducive to ion-exchange, finally make chemical tempering better effects if.But Al
2o
3too high levels, the easy crystallization of glass, is difficult to found.
B in the present invention
2o
3introduce 2-10%, preferred 4-7%, add B
2o
3glass viscosity can be reduced.Increase intensity and the light transmission rate of glass.B exists with the form of boron oxygen trihedron, reduce the fragility of glass, boron oxygen fundamental unit and siloxy our unit can be coupled to the combination complex anion group more more complicated than boron oxygen group, boron atom can exist with planar design, make short texture, non-bridging oxygen quantity increases, and is conducive to follow-up glass reinforced K, Na ion-exchange.
Na
2o belongs to network outer body, fluxing action, and glass melting temperature is reduced.Na
2o content, higher than 9%, can improve glass meltability.Na
2o can reduce glass viscosity, improves chemical durability of glass, Na
2o content selects 9-16%.Consider follow-up tempering, Na
2the preferred 12-14% of O content.
CaO belongs to alkaline earth metal oxide, can also improve the stability of glass while playing fluxing action.CaO content height can cause glass structure to loosen, and density declines.CaO can also reduce crystallization tendency, improves chemical stability and the physical strength of glass.The scope of CaO is 0.1-5%, and preferable range is 1.5-3%.MgO has reinforcing glass chemical stability, reduces the effect of devitrification of glass, but content increases and causes glass density and the coefficient of expansion to increase, and the scope of MgO is 0.1-5%, and preferable range is 1.5-3%.
ZrO
2the chemical stability of glass, hardness, wear resistance can be improved, the ZrO of too high levels
2serious crystallization trend can be caused, therefore ZrO
2scope be 0.1-3%, preferable range is 0.5-2%, and better preferred scope is 0.8-1.8%.
In the specific implementation, testing sample preparation steps is: weighing-mixing-melting-stirring-homogenizing-shaping-annealing-processing-performance test.
Concrete steps: weigh each component according to Example formulations each in table 1, table 2, table 3, fully mix, make it even, are poured into by compound in platinum-rhodium crucible, be incubated 8-10h under High Temperature Furnaces Heating Apparatus at 1550-1650 DEG C.In order to make glass ingredient even, helping to discharge bubble, stirring under using platinum rod high temperature.The glass metal melted is cooled to shaping required temperature range.
By the glass cutting after annealing, grind, be polished to thin slice needed for experiment, put into the melting KNO of 400-450 DEG C
3carry out chemical tempering process in solution, take out after tempering 4-7h and be cooled to room temperature, dry with washed with de-ionized water glass flake.
The test of embodiment Midst density adopts Archimedes method to measure, and unit is g/cm
3.
Expansion coefficient of glass thread, application dilatometric method, this method is placed on silica glass frame by sample, and utilize glass different from the thermal expansivity of silica glass, both mensuration is relative elongation in heat-processed.Characterize glass in the unit length of room temperature to 300 DEG C and the increment of unit length.
Strain point and annealing point, softening temperature all adopt fiber elongation method to measure, strain point, annealing point are with reference to ASTMC-338, the lower limit temperature that glass carries out anneal is strain point temperature, and the following inside glass stress relieved of strain point becomes very slow, can carry out fast cooling.Annealing is a kind of heat treatment process, can make the permissible value that the thermal stresses existed in glass is eliminated as far as possible or reduced.Softening temperature is that diameter heats according to 5 DEG C/min speed at the glass yarn of 0.65mm-0.1mm length at 230mm in process furnace, and temperature when elongation is 1mm/min is softening point temperature, and it characterizes the softening unique point of glass in deadweight state.
Adopt FSM-6000LE surface stress instrument test tempering glass surface stress and stressor layers thickness.Refer to each embodiment proportioning and performance test analysis in table 1, table 2, table 3.
Table 1
Table 2
Table 3
As can be seen from table 1, table 2, table 3, can be proved again by each embodiment: the glass substrate produced by means of glass ingredient principle provided by the invention can reach following technical indicator after testing: at the KNO of melting
3in (400 DEG C-450 DEG C) solution, the chemical enhanced time is 4-7 hour, and ion exchange depth is greater than 45 μm, and glass surface stress at least can reach 850MPa within a short period of time; Glass surface forms compressive stress layer, and compressive stress layer gives the higher intensity of glass, surface is scratch resistant scratch-resistant.
Claims (9)
1. a display device composition of raw materials for alumina silicate glass cover sheet, is characterized in that: in described composition of raw materials, the mass percentage of each chemical composition is:
SiO
255~65%，
Al
2O
310~18%，
Na
2O 9~16%，
B
2O
32~10%，
CaO 0.1~5%，
MgO 0.1~5%，
ZrO
20.1~3%。
2. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described SiO
2content is 58-62%.
3. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described Al
2o
3content is 13-17%.
4. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described Na
2o content is 12-14%.
5. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described B
2o
3content is 4-7%.
6. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described CaO content is 1.5-3%.
7. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described content of MgO is 1.5-3%.
8. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described ZrO
2content is 0.5-2%.
9. the composition of raw materials of a kind of display device alumina silicate glass cover sheet according to claim 1, is characterized in that: described ZrO
2content is 0.8-1.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749568.9A CN104326666A (en) | 2013-12-31 | 2013-12-31 | Raw material formula of aluminosilicate glass protective cover plate used for display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749568.9A CN104326666A (en) | 2013-12-31 | 2013-12-31 | Raw material formula of aluminosilicate glass protective cover plate used for display device |
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|---|---|
| CN104326666A true CN104326666A (en) | 2015-02-04 |
Family
ID=52401494
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774556A (en) * | 2015-04-15 | 2015-07-15 | 苏州创佳电子材料有限公司 | Anti-glare hardening coating for screen protective film and preparation method and application of coating |
| CN107721159A (en) * | 2017-09-30 | 2018-02-23 | 芜湖东旭光电装备技术有限公司 | Touch-screen containing zirconium is with cover-plate glass material, glass and preparation method and touch-screen cover plate |
| CN109020194A (en) * | 2018-08-27 | 2018-12-18 | 东旭集团有限公司 | A kind of glass and the preparation method and application thereof |
| 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 |
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|---|---|---|---|---|
| CN101508524A (en) * | 2009-03-31 | 2009-08-19 | 成都光明光电股份有限公司 | Glass suitable for chemically tempering and chemical tempered glass |
| CN101679105A (en) * | 2007-06-07 | 2010-03-24 | 日本电气硝子株式会社 | Hardened glass substrate, and method for production thereof |
| CN102701588A (en) * | 2012-06-12 | 2012-10-03 | 东旭集团有限公司 | Glass substrate for plasma display panel |
-
2013
- 2013-12-31 CN CN201310749568.9A patent/CN104326666A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101679105A (en) * | 2007-06-07 | 2010-03-24 | 日本电气硝子株式会社 | Hardened glass substrate, and method for production thereof |
| CN101508524A (en) * | 2009-03-31 | 2009-08-19 | 成都光明光电股份有限公司 | Glass suitable for chemically tempering and chemical tempered glass |
| CN102701588A (en) * | 2012-06-12 | 2012-10-03 | 东旭集团有限公司 | Glass substrate for plasma display panel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774556A (en) * | 2015-04-15 | 2015-07-15 | 苏州创佳电子材料有限公司 | Anti-glare hardening coating for screen protective film and preparation method and application of coating |
| CN107721159A (en) * | 2017-09-30 | 2018-02-23 | 芜湖东旭光电装备技术有限公司 | Touch-screen containing zirconium is with cover-plate glass material, glass and preparation method and touch-screen cover plate |
| CN107721159B (en) * | 2017-09-30 | 2020-10-13 | 芜湖东旭光电装备技术有限公司 | Cover plate glass material for zirconium-containing touch screen, glass, preparation method and cover plate for touch screen |
| CN109020194A (en) * | 2018-08-27 | 2018-12-18 | 东旭集团有限公司 | A kind of glass and the preparation method and application thereof |
| 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 |
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Application publication date: 20150204 |
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