CN104150765A - High-silicon high-aluminum cover plate glass for touch screen - Google Patents
High-silicon high-aluminum cover plate glass for touch screen Download PDFInfo
- Publication number
- CN104150765A CN104150765A CN201310377895.6A CN201310377895A CN104150765A CN 104150765 A CN104150765 A CN 104150765A CN 201310377895 A CN201310377895 A CN 201310377895A CN 104150765 A CN104150765 A CN 104150765A
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- China
- Prior art keywords
- glass
- plate glass
- touch
- screen cover
- silicon
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Abstract
The invention relates to high-silicon high-aluminum cover plate glass for a touch screen. The high silicon and high aluminum cover plate glass is characterized by being prepared from the following components in percentage by weight: 67-75% of SiO2, 14-20% of Al2O3, 0-2% of B2O3, 5-15% of Na2O, 2-8% of K2O, 0-5% of MgO, 0-5% of CaO, 0-1% of SrO, 0-1% of ZnO and 0.1-1% of SnO. A cover plate glass product for the touch screen melted by a formula provided by the invention is suitable for chemical tempering and has a good tempering effect, and great surface stress and appropriate depth of a stress layer can be obtained. The glass has great Young modulus so as to obtain ideal breaking tenacity, thereby benefiting reduction of the brittleness of the glass and improvement of the shock resistance of the glass.
Description
Technical field
The present invention relates to a kind of high silicon, high alumina touch-screen cover-plate glass, belong to the screen surface protection glass material that shows product, this glass material belongs to aluminosilicate system, has outstanding mechanical property, good shock resistance and adhesion strength.Can be used for the protection of plasm TV, LCD TV, panel computer, notebook computer liquid-crystal display, touch-screen mobile phone etc., can well protect and show product screen, the work-ing life and the result of use that extend demonstration product.
Background technology
Along with comprising appearance and the update of capacitance touch screen mobile phone, panel computer, digital camera, all kinds of inquiry terminal, ATM, planter, giant-screen touch type electronic blank etc., the rate of permeation of touch controllable function in consumption electronic product improves constantly, and this has greatly promoted the market requirement of touch-screen top layer cover-plate glass.
According to consumer demand, touch-screen cover-plate glass is just gradually towards the future development of high-quality more.Its high-quality is mainly reflected in that surface stress is large, the stressor layers degree of depth is applicable, heat-resisting, heat shock resistance, have low shock-resistant, the frivolous applicable aspect such as in large size of good tenacity, fragility.At present, reducing fragility, the progress of improving touch-screen cover-plate glass shock-resistance aspect is still barely satisfactory, does not have breakthrough, and the damage of touch-screen cover-plate glass is also many to be caused by impact resistance deficiency.
Summary of the invention
The present invention is directed to the deficiency of above-mentioned touch-screen cover-plate glass, a kind of high silicon, high alumina touch-screen cover-plate glass are provided, have and be intended in material side, the relative content of silicon, aluminium be heightened, and to the adjustment of being correlated with of other component, through repeatedly verifying, adjusting, finally obtain this enhancement type touch-screen cover-plate glass.
The present invention is that the technical scheme that realizes goal of the invention employing is, a kind of high silicon, high alumina touch-screen cover-plate glass, and key is: described glass ingredient by mole% meter is:
SiO
2: 67-75 %，
Al
2O
3: 14-20 % ，
B
2O
3: 0-5 %，
Na
2O: 5-15 %，
K
2O: 2-8 %，
MgO: 0-5 %，
CaO: 0-5 %，
SrO: 0-1 %，
ZnO： 0-1 %，
SnO: 0.1-1 %。
Utilize the touch-screen cover-plate glass product that material side of the present invention founds out be suitable for carrying out chemical tempering and there is good tempering effect, can obtain larger surface stress and the comparatively applicable stressor layers degree of depth.And glass has larger Young's modulus, thereby obtain comparatively ideal fracture toughness property, this,, to reducing glass fragility, improves glass shock-resistance and does a great deal of good.Due to its material side's feature, this touch-screen cover-plate glass is difficult for devitrification occurring and being easy to vitrifying, is applicable to explained hereafter requirement, has heat-resisting and thermal shock resistance preferably.And the finings part in this material side, what adopt is that oxidation clarification, sulphur clarification clarify with halogen the compound clarifier mode combining, coordinate three's clarification advantage, reach continuous clarification object, seed concentration is down to compared with low degree, the bubble that glass melt internal contamination thing forms is known as " seed ", and has avoided the use of As, Sb etc., environmental protection.In basic metal, avoid the use of Li element, reduced production cost; In alkaline-earth metal, having avoided the use of Ba element, is to consider to reduce costs and consider that Ba is considered to objectionable impurities.This material side is suitable for industrial production, has higher economic worth.
Embodiment
A kind of high silicon, high alumina touch-screen cover-plate glass, described glass ingredient by mole% meter is:
SiO
2: 67-75 %，
Al
2O
3: 14-20 % ，
B
2O
3: 0-5 %，
Na
2O: 5-15 %，
K
2O: 2-8 %，
MgO: 0-5 %，
CaO: 0-5 %，
SrO: 0-1 %，
ZnO： 0-1 %，
SnO: 0.1-1 %。
Described SiO
2preferable range be: 67-70%.As the matrix that forms silicate glass, SiO
2add resistance to sudden heating and the chemical durability that can improve glass, and make glass be difficult for devitrification, also helpful for During Vitrification in vitro.But too much SiO
2can make melt temperature raise, reduce thermal expansivity, production technique is proposed to excessive demand.
Described Al
2o
3preferable range be: 15-17%.Al
2o
3add higher thermotolerance and higher ion-exchange capacity can be provided, can effectively improve Young's modulus and then reduce the fragility of touch-screen cover-plate glass, and play aborning fluxing action.But A1
20
3content when too much, can cause the easy devitrification of glass, thermal expansivity to reduce and be difficult to mate with periphery material, high temperature viscosity is excessive, strengthens process of glass difficulty etc.
Described B
2o
3preferable range be: 0.5-1.5%.B
2o
3add liquidus temperature, high temperature viscosity and the density that can effectively reduce glass, especially can make glass softening, play in process of production good fluxing action, and can improve the toughness of glassy product, improve physical strength.But, too much B
2o
3can reduce the strain point of glass, and easily cause producing stress mitigation in ion exchange process, be unfavorable for obtaining good stress under compression.
Described Na
2the preferable range of O is: 7-12%; Described K
2the preferable range of O is: 2-5%; And 12 %≤(Na
2o+K
2o)≤21 %, 0.8≤Al
2o
3/ (Na
2o+K
2o)≤1.5.K
+with Na
+be all the composition of ion-exchange, improve meltbility and plasticity thereby its content of appropriate increase can reduce the high temperature viscosity of glass effectively, and can improve devitrification.But its too high levels can increase the thermal expansion of glass and reduce the chemical durability of glass, and too high levels has the tendency of increased devitrification resistance deterioration on the contrary.
The preferable range of described MgO is: 2-4%; The preferable range of described CaO is: 0.3-4%; The preferable range of described SrO is: 0.3-0.8%; And 5 %≤MgO+CaO+SrO≤10 %, 0.25≤(MgO+CaO+SrO)/(Na
2o+K
2o)≤0.5.Thereby the high temperature viscosity that can effectively reduce the adding of above alkaline earth metal oxide glass improves the meltbility of glass and plasticity, raising ion-exchange performance, and can improve strain point and the Young's modulus of glass.But its content too much makes density increase, the incidence of crackle, devitrification, phase-splitting all improves, and also can cause ion-exchange performance to worsen on the contrary.
The preferable range of described ZnO is: 0.3-0.8%.ZnO can make the high temperature viscosity of glass reduce, be again the composition that Young's modulus is improved.Also there is in addition the effect that improves ion-exchange performance.But if the content of ZnO is too much, thermal expansivity increases, the easy devitrification of glass, phase-splitting, cracking frequency also can raise.
The preferable range of described SnO is: 0.3-0.8%.Introducing SnO, is mainly to utilize its oxidation clarification.In this material side, finings adopts compound clarifier.This compound clarifier has fully utilized the advantage of oxide compound clarification, vitriol clarification and halogen clarification, gives full play to three's synergistic effect and Overlay.Wherein halogen is introduced with chloride form.
Utilize the touch-screen cover-plate glass product that material side of the present invention founds out be suitable for carrying out chemical tempering and there is good tempering effect, can obtain larger surface stress and the comparatively applicable stressor layers degree of depth.And glass has larger Young's modulus, thereby obtain comparatively ideal fracture toughness property, this,, to reducing glass fragility, improves glass shock-resistance and does a great deal of good.Due to its material side's feature, this touch-screen cover-plate glass is difficult for devitrification occurring and being easy to vitrifying, is applicable to explained hereafter requirement, has heat-resisting and thermal shock resistance preferably.And the finings part in this material side, employing be that oxidation clarification, sulphur clarification clarify with halogen the compound clarifier mode combining, coordination three's clarification advantage, reach continuous clarification object, seed concentration is down to compared with low degree, and has avoided the use of As, Sb etc., environmental protection.In basic metal, avoid the use of Li element, reduced production cost; In alkaline-earth metal, having avoided the use of Ba element, is to consider to reduce costs and consider that Ba is considered to objectionable impurities.This material side is suitable for industrial production, has higher economic worth.
For the reinforced effects of checking material side of the present invention, now found out glass sample, and it is carried out to tempering processing, detect correlated performance, the embodiment referring in table 1, table 2 and table 3:
Table 1:
Table 2:
Table 3:
In above performance perameter, proportion refer to the density of glass, for adapting to the lightening development trend in cover-plate glass market, cover-plate glass proportion is the smaller the better within the specific limits, and the specific gravity of glass that the material side providing according to this patent obtains is relatively little, meets lightening requirement.The coefficient of expansion is the physical quantity that characterizes object hot expansion property, and when characterizing object and being heated, its length, area, volume increase the physical quantity of degree.Thermal expansivity is too small or excessively be all difficult to obtain and the mating of periphery material, and is unfavorable for technological forming.The glass swelling coefficient that the material side providing according to this patent obtains is moderate, is suitable for industrial production.Annealing point refers to that glass viscosity is 10
12corresponding temperature when Pa s, for the related glass system of this patent, within the scope of 550 ~ 700 DEG C, annealing point is the bigger the better, and founds the glass annealing point obtaining suitable according to the disclosed material side of this patent, has reached more satisfactory level.Strain point refers to that glass viscosity is 10
13.5corresponding temperature when Pa s, for the related glass system of this patent, is the bigger the better 500 ~ 650 DEG C of scope planted agent heights, founds the strain point of glass obtaining suitable according to the disclosed material side of this patent, has reached more satisfactory level.Softening temperature refers to that glass viscosity is 10
6.5~ 10
7corresponding temperature when Pa s, for the related glass system of this patent, within the scope of 750 ~ 950 DEG C, softening temperature is the bigger the better, and founds the glass softening point obtaining suitable according to the disclosed material side of this patent, has reached more satisfactory level.Material is in the recoverable deformation stage, its stress and strain relation in direct ratio (meeting Hook's law), and its scale-up factor is called Young's modulus, and Young's modulus refers to Young's modulus longitudinally.The size of Young's modulus has indicated the rigidity of material, and Young's modulus is larger, is more not easy to occur deformation.Within the specific limits, the Young's modulus that improves glass can obtain comparatively ideal fracture toughness property, and this,, to reducing glass fragility, improves glass shock-resistance and do a great deal of good, and can say that Young's modulus is the bigger the better within the specific limits.Can obtain cover-plate glass one of the feature of this patent just with larger Young's modulus.After chemical tempering, stress refer to the glass surface stress by forming after ion-exchange.The chemical tempering degree of depth refers to the ion-exchange degree of depth.Within the specific limits, the two coordinates restriction mutually, and wherein a certain parameter is unsuitable excessive or too small.After the tempering of the glass that this patent provides, stress and the stress degree of depth are comparatively suitable, and the cover-plate glass that is suitable as electronic product uses.Poisson's ratio is the ratio of material transvrsal strain and longitudinal strain, is also Poisson ratio, and it is the elastic constant of reflection material transverse deformation, unsuitable excessive or too small.The glass Poisson's ratio that this patent provides is suitable, and the cover-plate glass that is suitable as electronic product uses.
Claims (15)
1. high silicon, a high alumina touch-screen cover-plate glass, is characterized in that: described glass ingredient by mole% meter is:
SiO
2: 67-75 %，
Al
2O
3: 14-20 % ，
B
2O
3: 0-5 %，
Na
2O: 5-15 %，
K
2O: 2-8 %，
MgO: 0-5 %，
CaO: 0-5 %，
SrO: 0-1 %，
ZnO： 0-1 %，
SnO: 0.1-1 %。
2. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: described SiO
2scope be: 67-70%.
3. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: described Al
2o
3scope be: 15-17%.
4. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: described B
2o
3scope be: 0.5-1.5%.
5. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: described Na
2the scope of O is: 7-12%.
6. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: described K
2the scope of O is: 2-5%.
7. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: the scope of described MgO is: 2-4%.
8. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: the scope of described CaO is: 0.3-4%.
9. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: the scope of described SrO is: 0.3-0.8%.
10. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: the scope of described ZnO is: 0.3-0.8%.
11. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: the scope of described SnO is: 0.3-0.8%.
12. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: 12 %≤(Na
2o+K
2o)≤21 %.
13. according to the high silicon of the one described in claim 5, high alumina touch-screen cover-plate glass, it is characterized in that: 0.8≤Al
2o
3/ (Na
2o+K
2o)≤1.5.
14. according to the high silicon of the one described in claim 1, high alumina touch-screen cover-plate glass, it is characterized in that: 5 %≤MgO+CaO+SrO≤10 %.
The high silicon of 15. one according to claim 14, high alumina touch-screen cover-plate glass, is characterized in that: 0.25≤(MgO+CaO+SrO)/(Na
2o+K
2o)≤0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377895.6A CN104150765A (en) | 2013-08-27 | 2013-08-27 | High-silicon high-aluminum cover plate glass for touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377895.6A CN104150765A (en) | 2013-08-27 | 2013-08-27 | High-silicon high-aluminum cover plate glass for touch screen |
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|---|---|
| CN104150765A true CN104150765A (en) | 2014-11-19 |
Family
ID=51876432
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| CN201310377895.6A Pending CN104150765A (en) | 2013-08-27 | 2013-08-27 | High-silicon high-aluminum cover plate glass for touch screen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915890A (en) * | 2017-12-21 | 2018-04-17 | 安徽省凯丽方化工有限公司 | A kind of high-strength armoured-glass sticking film for mobile phone |
| CN108046595A (en) * | 2017-12-21 | 2018-05-18 | 安徽安远塑胶股份有限公司 | A kind of handset touch panel tempered glass pad pasting |
| CN108129023A (en) * | 2017-12-21 | 2018-06-08 | 安徽安远塑胶股份有限公司 | A kind of mobile phone tempered glass pad pasting |
| CN108129763A (en) * | 2017-12-21 | 2018-06-08 | 定远县保尔工贸有限公司 | A kind of scratch resistant tempered glass sticking film for mobile phone |
| CN109650718A (en) * | 2018-12-28 | 2019-04-19 | 醴陵旗滨电子玻璃有限公司 | Float glass and its preparation method and application |
| CN110228946A (en) * | 2019-07-22 | 2019-09-13 | 成都光明光电股份有限公司 | Optical glass |
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| CN102762508A (en) * | 2009-08-21 | 2012-10-31 | 康宁股份有限公司 | Crack and scratch resistant glass and enclosures made therefrom |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915890A (en) * | 2017-12-21 | 2018-04-17 | 安徽省凯丽方化工有限公司 | A kind of high-strength armoured-glass sticking film for mobile phone |
| CN108046595A (en) * | 2017-12-21 | 2018-05-18 | 安徽安远塑胶股份有限公司 | A kind of handset touch panel tempered glass pad pasting |
| CN108129023A (en) * | 2017-12-21 | 2018-06-08 | 安徽安远塑胶股份有限公司 | A kind of mobile phone tempered glass pad pasting |
| CN108129763A (en) * | 2017-12-21 | 2018-06-08 | 定远县保尔工贸有限公司 | A kind of scratch resistant tempered glass sticking film for mobile phone |
| CN109650718A (en) * | 2018-12-28 | 2019-04-19 | 醴陵旗滨电子玻璃有限公司 | Float glass and its preparation method and application |
| CN109650718B (en) * | 2018-12-28 | 2021-07-13 | 醴陵旗滨电子玻璃有限公司 | Float glass and preparation method and application thereof |
| CN110228946A (en) * | 2019-07-22 | 2019-09-13 | 成都光明光电股份有限公司 | Optical glass |
| CN110228946B (en) * | 2019-07-22 | 2022-01-25 | 成都光明光电股份有限公司 | Optical glass |
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Application publication date: 20141119 |