CN105819684B - A kind of glass composition, aluminium borosilicate glass and its preparation method and application - Google Patents

A kind of glass composition, aluminium borosilicate glass and its preparation method and application Download PDF

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CN105819684B
CN105819684B CN201610202225.4A CN201610202225A CN105819684B CN 105819684 B CN105819684 B CN 105819684B CN 201610202225 A CN201610202225 A CN 201610202225A CN 105819684 B CN105819684 B CN 105819684B
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glass
composition
weight
basis
content
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CN105819684A (en
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张广涛
胡恒广
王丽红
闫冬成
李俊锋
安利营
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Dongxu Optoelectronic Technology Co Ltd
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Tunghsu Group Co Ltd
Tunghsu Technology Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/095Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C21/00Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention relates to glass arts, disclose a kind of glass composition, aluminium borosilicate glass and its preparation method and application.On the basis of the weight of the composition, in terms of oxide, the composition contains the SiO of 40 60wt%2, 10 40wt% B2O3, 3 17wt% Al2O3+Ga2O3, 11 18wt% Na2O, the K of 0 5wt%2O, the RE of the MgO of 0 8wt%, the CaO of 0.1 13wt%, the ZnO of 0 4wt% and 0.1 4wt%2O3.The glass that the present invention is prepared, chemical strengthening effect is good, has higher strain point, higher elasticity modulus, relatively low fusion temperature, and have both good impact strength and toughness simultaneously, is appropriate for large-scale industrial production.

Description

A kind of glass composition, aluminium borosilicate glass and its preparation method and application
Technical field
The present invention relates to glass arts, and in particular, to a kind of glass composition, aluminium borosilicate glass and its preparation Methods and applications.
Background technology
In plane display field, recent years, touch screen products market development was rapid, and current main product is condenser type Touch screen, critical piece are the glass substrates that surface shields.With the development of display technology and touch technology, market Requirement for glass substrate increasingly improves.Since touch-screen applications are more and more extensive, the equipment of big-and-middle small size nearly all has There is touch screen, so the main performance of touch screen is that have outstanding mechanical performance, anti-scratch and scratch resistance capability, and this property Can be reflected by the intensity of glass, so the intensity for improving glass itself is crucial.Strength of glass is in addition to by tempering shadow Except sound, the material side's composition of itself plays crucial decisive action.The cover sheet glass of mainstream uses common sodium calcium on the market Silicate systems or high-alkali high alumina silicate systems carry out chemical tempering and achieve the purpose that enhancing, and the cover-plate glass of newer type uses Colourless sapphire slices are as cover sheet.However there are larger defects for above-mentioned system.
After common soda lime glass carries out ion exchange, it is unable to reach enough stress layer depths and higher surface compression should Power, the ability (hardness) for resisting mechanically deform is weaker, and anti-scratch ability is poor;High-alkali high alumina silicate glass introduces high-content Al2O3The process and depth of ion exchange are accelerated later, and anti-scratch ability is improved, but Al2O3Substitute SiO2It drops later The low degree of opening of glass structure has rigid structure, can resist deformation, fracture toughness is caused to reduce, brittleness increases, mobile phone The broken screen event of hand-held displays is waited to happen occasionally.On the other hand, high-content Al2O3Introducing quickly increase the fusing of glass Difficulty, temperature when viscosity is 200 pool is often beyond 1550 DEG C or even 1600 DEG C or even 1650 DEG C and higher, industry manufacture Difficulty is larger;Sapphire is the substance that hardness is only second to diamond, Mohs' hardness 9, and anti-scratch ability is better than strengthened glass, but It is that brittleness is excessive, encounters impact and be easily broken, is only used at present on the small size devices such as camera head protecting glass surface, intelligence There are frangible risks on the large scales such as mobile phone screen protection surface, there is no popularization and application.
In field of flexible display, flexible display device is mainly by substrate, intermediate display medium, encapsulation up of three layers.Substrate Substrate material can be made by materials such as glass, organic polymer, metals, at present for respectively have quality, there is no and perfect solve intensity With toughness harmonized programme.With flexible material such as polymer compared with metal foil, thickness<The ultra-thin glass of 0.1mm is that one kind is matched The glass material of square height optimization, barrier steam and oxygen are had excellent performance, and have excellent endurance and mechanical performance, also With relatively low thermal expansion and higher thermal stability.Its maximum advantage is to be the maturity and compatibility of coating technique. Mainstream AMLCD, AMOLED makes TFT on the glass substrate at present, and the relevant technologies, equipment and industrial chain are highly developed, simultaneous Capacitive is ideal, will substantially reduce production cost, but as the ultra-thin glass of fragile material, reduce its brittleness, improves Shock resistance is one of the problem of material side's level needs to break through.In terms of flexible package cover plate materials, chemically tempering is low Brittleness ultrathin flexible cover-plate glass intensity, air-tightness etc. far victory polymer material, but equally exist glass material without The brittleness problems that method avoids, broken damage when falling, which still needs, to be avoided.Therefore toughness and shock resistance are improved in material side's level Intensity is still one of important topic.
Invention content
The purpose of the invention is to overcome drawbacks described above of the prior art, a kind of glass composition, aluminium boron are provided Silicate glass and its preparation method and application, the chemically reactive reinforcing of aluminium borosilicate glass of the invention, and with excellent resistance to Impact property.
To achieve these goals, in a first aspect, the present invention provides a kind of glass composition, with the weight of the composition On the basis of amount, in terms of oxide, the composition contains the SiO of 40-60wt%2, 10-40wt% B2O3, 3-17wt% Al2O3 +Ga2O3, 11-18wt% Na2O, the K of 0-5wt%2O, the ZnO of CaO, 0-4wt% of MgO, 0.1-13wt% of 0-8wt% With the RE of 0.1-4wt%2O3
Preferably, by weight percentage, 0<Ga2O3/(Al2O3+Ga2O3)<0.6。
Preferably, on the basis of the weight of the composition, in terms of oxide, Al2O3+Ga2O3Content be 3.5- 13wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, RE2O3Content for 0.3-3wt%, and RE2O3For rare earth oxide Y2O3、La2O3、Gd2O3、Ce2O3、Yb2O3And Lu2O3At least one of, and by weight percentage, Y2O3+La2O3>0wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, SiO2Content be 45-55wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, B2O3Content be 15-35wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, the content of MgO is 2-6wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, the content of CaO is 1-9wt%.
Preferably, on the basis of the weight of the composition, in terms of oxide, Na2The content of O is 12-16.5wt%.
Preferably, on the basis of the weight of the composition, K2The content of O is 1-4wt%.
Preferably, on the basis of the weight of the composition, the content of ZnO is 0.1-3wt%.
Preferably, the composition also contains fining agent, and the fining agent is more preferably sulfate, nitrate, oxygen Change at least one of tin and stannous oxide;On the basis of the weight of the composition, the content of fining agent is not more than 1wt%.
Second aspect, the present invention provides a kind of method for preparing aluminium borosilicate glass, this method includes will be of the invention The glass carries out melt process, forming processes, annealing and machining processes successively with composition, it is preferable that should Method is further included carries out chemical intensification treatment to the product that machining processes obtain.
Preferably, this method further includes:Before chemical intensification treatment, two are carried out to the product that machining processes obtain Thin processing is drawn in secondary melting.
Preferably, control the machining processes or second melting that the condition of thin processing is drawn to be less than to prepare thickness The glass of 0.1mm.
The third aspect, the present invention provides the aluminium borosilicate glass that the above method is prepared.
Preferably, the elasticity modulus of the aluminium borosilicate glass is higher than 80GPa, and density is less than 2.5g/cm3, 50-350 Coefficient of thermal expansion in the range of DEG C is less than 90 × 10-7/ DEG C, strain point temperature is higher than 550 DEG C, and annealing point is higher than 580 DEG C, and viscosity is Corresponding temperature is less than 1450 DEG C during 200 pool.
Preferably, the fracture toughness K of the glass obtained before the chemical intensification treatmentICMore than 0.9MPam1/2
Preferably, the fracture toughness K for the glass that the chemical intensification treatment obtainsICMore than 3.3MPam1/2, glass surface The compression stress of formation is in more than 800MPa, and compression stress layer depth is at 55 μm or more.
Fourth aspect, it is aobvious in preparation the present invention provides glass composition of the present invention or aluminium borosilicate glass Show the application in device and/or solar cell, preferably protect and use in the screen surface for preparing tablet or Flexible Displays product Glass material, the substrate glass substrate material of Flexible Displays product, plane and/or flexible solar battery substrate glass material Material, the cover-plate glass material of plane and/or flexible solar battery, safety glass, bulletproof glass, intelligent automobile glass, intelligence Application in traffic display screen, intelligent show window and smart card ticket.
The glass composition of the present invention for a kind of frit side for strengthening effect with good chemical, belongs to aluminium borosilicate Silicate glass system is used to produce thickness suitable for the various Conventional glassmaking methods such as float glass process, press over system, rolling process, glass tube down-drawing Degree>The plate glass or thickness of 0.1mm<(i.e. once moulding method obtains thickness to the flexible glass of 0.1mm<The flexible glass of 0.1mm Glass) or suitable for second melting thin method is drawn for producing thickness<The flexible glass of 0.1mm.What the present invention was prepared Glass, tempering effect is good, has higher strain point, higher elasticity modulus, relatively low fusion temperature, higher thermal expansion system Number, and good impact strength and toughness are had both simultaneously, it is appropriate for large-scale industrial production.
A preferred embodiment of the invention, the SiO containing certain content in glass composition2、B2O3、 Al2O3、Ga2O3、Na2O、K2O, MgO, CaO, ZnO and RE2O3, the glass that is prepared using this glass with composition, springform Amount is less than 2.5g/cm higher than 80GPa, density3, the coefficient of thermal expansion in the range of 50-350 DEG C is less than 90 × 10-7/ DEG C, strain point Temperature is higher than 550 DEG C, and annealing point is higher than 580 DEG C, corresponding temperature (T when viscosity is 200 pool2.3) less than 1450 DEG C;Wherein, exist (correspond to machining processes before chemical intensification treatment or second melting draws the thin glass for handling and obtaining), the fracture toughness of glass KICMore than 0.9MPam1/2;The fracture toughness K for the glass that chemical intensification treatment obtainsICMore than 3.3MPam1/2, glass surface For the compression stress of formation in more than 800MPa, compression stress layer depth can be effectively prevented display product glass at 55 μm or more The impact on surface and scuffing damage;Preferably, machining processes or second melting draw the thin thickness of glass for handling and obtaining Less than 0.1mm.
The glass composition or aluminium borosilicate glass of the present invention can be used for preparing display device and/or solar-electricity Pond, particularly for preparing the screen surface protection glass material of tablet or Flexible Displays product, the substrate of Flexible Displays product The substrate glass material of glass substrate material, plane and/or flexible solar battery, plane and/or flexible solar battery Cover-plate glass material, safety glass, bulletproof glass, intelligent automobile glass, intelligent transportation display screen, intelligent show window, smart card ticket And the field of high impact and toughness glass material is needed for other.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It is it should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In a first aspect, the present invention provides a kind of glass composition, on the basis of the weight of the composition, with oxide Meter, the composition contain the SiO of 40-60wt%2, 10-40wt% B2O3, 3-17wt% Al2O3+Ga2O3, 11-18wt% Na2O, the K of 0-5wt%2O, the ZnO and 0.1-4wt% of CaO, 0-4wt% of MgO, 0.1-13wt% of 0-8wt% RE2O3
In the glass composition of the present invention, SiO2As the matrix for forming borosilicate glass, addition can improve glass The thermal shock resistance and chemical durability of glass, and glass is made to be not easy devitrification, it is also helpful for During Vitrification in vitro.However excessive SiO2Can melting temperature be increased, reduce coefficient of thermal expansion, excessive demand is proposed to production technology.Therefore, consider, with On the basis of the weight of the composition, in terms of oxide, SiO2Content be 40-60wt%, preferably 45-55wt%.
In the glass composition of the present invention, B2O3As the matrix for forming borosilicate glass, glass can be individually created, It adds in the brittleness that can reduce glass, improves the fracture toughness of glass, while B2O3It is also good cosolvent, can be greatly reduced Glass melting temperature, it is also helpful for During Vitrification in vitro.There is [BO in glass4] tetrahedron and [BO3] two kinds of knots of triangle body Structure, B under the conditions of high temperature melting2O3It is difficult to form [BO4], high temperature viscosity can be reduced, depending on the quantity of free oxygen is preferential during low temperature Form tetrahedron or triangle body.In borosilicate glass, [BO4] tetrahedron can be with [SiO4] tetrahedroid is into unified company Continuous three-dimensional network, and [BO3] it is rotary boron ring connection between triangle body, sliding is generated after stress, causes plastic flow, With relatively low brittleness and higher fracture toughness;And borosilicate glass has relatively low fusion temperature, and viscosity is 200 pools When corresponding temperature (T2.3) less than 1450 DEG C and lower, while borosilicate glass has relative to high alumina silicate glass Relatively low high temperature surface tension, is more suitable for high-volume industrial production and manufacturing.However excessive B2O3Glass low-temperature viscosity can be caused to drop It is low, it is unfavorable for the adjustment of subsequent chemistry steel process.Therefore, consider, on the basis of the weight of the composition, with oxide Meter, B2O3Content be 10-40wt%, preferably 15-35wt%.
In the glass composition of the present invention, Al2O3Addition can accelerate the process and depth of ion exchange, but it is striven Take the very capable of free oxygen by force, largely introduce Al2O3The degree of opening of glass structure can be reduced, glass is made to tend to rigidity, increases glass The brittleness of glass, while the easy devitrification of glass, coefficient of thermal expansion can be caused to reduce and be difficult to match with periphery material, high temperature surface tension And high temperature viscosity is excessive, increases process of glass difficulty etc..Ga2O3With Al2O3Effect it is similar, chemistry can be greatly improved Strengthening process intermediate ion exchange rate, effectively can improve strain point of glass and fusion temperature be made to increase more slowly, while can have Effect improves glass impact strength and toughness.But due to radius ratio effect, excessive Ga2O3It can lead to it as Network former Ratio decline, as network outer body ratio rise, weaken above-mentioned advantage.Therefore Al2O3And Ga2O3Addition resultant and addition Ratio receives special restriction.Consider, on the basis of the weight of the composition, in terms of oxide, Al2O3+Ga2O3's Content is in the range of 3-17wt%, preferably 3.5-13wt%, it is further preferred that by weight percentage, 0<Ga2O3/ (Al2O3+Ga2O3)<0.6。
In the glass composition of the present invention, Na+With K+All it is the ingredient of ion exchange, suitable its content of increase can have Effect ground reduces the high temperature viscosity of glass, so as to improve meltbility and formability, and can improve devitrification.However, its too high levels meeting Increase the thermal expansion of glass and reduce the chemical durability of glass, and too high levels have the tendency that increased devitrification resistance deterioration instead, just change For learning tempering, the Na in glass+By the K in solution+Displacement, therefore Na in glass+Content, which suitably increases, can significantly improve tempering Effect.Therefore, consider, on the basis of the weight of the composition, in terms of oxide, Na2The content of O is 11-18wt%, excellent It is selected as 12-16.5wt%;K2The content of O is 0-5wt%, preferably 1-4wt%.
In the glass composition of the present invention, MgO, CaO belong to alkaline earth oxide, their addition can effectively drop The high temperature viscosity of low glass, so as to improve the meltbility of glass and formability, improve ion-exchange performance, and glass can be improved Strain point and Young's modulus.However its content excessively increases density, crackle, devitrification, split-phase incidence improve, can also lead Ion-exchange performance is caused to deteriorate instead.Therefore, consider, on the basis of the weight of the composition, in terms of oxide, MgO's Content is 0-8wt%, preferably 2-6wt%;The content of CaO is 0.1-13wt%, preferably 1-9wt%.
The present invention glass composition in, bivalent metal oxide according to it in the periodic table of elements status with to property Difference is influenced, two classes can be divided into:One kind is to be located at the alkaline earth oxide of main group, ion R2+With 8 exoelectron knots Structure;Second class is located at periodic table subgroup (such as ZnO, CdO), ion R2+With 18 outer electronic structures, in glass two The configuration state of person is from being different on glass property influence.Relative to alkaline-earth metal, there is the Zn of 18 electronics layer structures2+From Son is easier to be polarized, and glass viscosity (such as 1450 DEG C) can be reduced under high temperature, is conducive to eliminate bubble;When total alkali content and network When intermediate oxide molecular proportion is more than 1, after introducing glass as network outer body, Zn2+Tend to form tetrahedron with four-coordination [ZnO4] exist, compared with [ZnO6] glass structure is more loose, compared with being under the identical condition of high temperature with the glass without ZnO, contain The glass viscosity smaller of ZnO, atomic motion speed bigger, can not form nucleus, need further to reduce temperature, be just conducive to crystalline substance The formation of core thus, reduces the crystallization ceiling temperature of glass;Have below softening point and promote intensity, hardness, increase glass Chemical resistance reduces brittleness value, reduces the effect of thermal expansion coefficient of glass.ZnO content excessively can make the strain point of glass substantially Degree reduces.Therefore, consider, on the basis of the weight of the composition, in terms of oxide, the content of ZnO is 0-4wt%, excellent It is selected as 0.1-3wt%.
In the glass composition of the present invention, rare earth oxide RE2O3Often have in the certain aspect of performance for improving glass Unique ability, for example, the performances such as the bending strength of glass, elasticity modulus, strain point with the addition of rare earth oxide and substantially on It rises, promotes the reduction of glass brittleness, fracture toughness is significantly increased.After the network outer bodies such as alkaline-earth metal, ZnO introduce glass composition, mistake Surplus oxygen atom causes the bridge oxygen bond rupture in glass structure to generate non-bridging oxygen, and the presence of these non-bridging oxygens significantly reduces glass Bending strength.RE2O3Addition the internal structure of glass is promoted to change, the Si-O-RE chemical bonds generated will be in glass Isolated island network element reconnects, and improves the network structure of glass, so as to greatly improve the bending strength of glass, The performances such as elasticity modulus, strain point, when further increasing RE2O3When, due to the non-bridging oxygen quantity reduction for adjustment, glass The above-mentioned performance change of glass is little.Therefore, consider, on the basis of the weight of the composition, in terms of oxide, RE2O3Contain It measures as 0.1-4wt%, preferably 0.3-3wt%.Consider from other performance synthesis such as absorption spectrum, present invention introduces RE2O3For Rare earth oxide Y2O3、La2O3、Gd2O3、Ce2O3、Yb2O3And Lu2O3At least one of, and by weight percentage, Y2O3+ La2O3>0wt%.
In the glass composition of the present invention, according to the difference of glass preparation technique, composition can also contain as glass Fining agent when glass melts, the fining agent is preferably at least one of sulfate, nitrate, tin oxide and stannous oxide; On the basis of the weight of the composition, the content of fining agent is not more than 1wt%.It is not special for the specific choice of fining agent Limit, can be various selections commonly used in the art, such as sulfate can be sodium sulphate, nitrate can be sodium nitrate and/ Or potassium nitrate.
It will be understood by those skilled in the art that in the glass composition of the present invention, composition contains SiO2、B2O3、 Al2O3、Ga2O3、Na2O、K2O, MgO, CaO, ZnO and RE2O3Refer to that the composition contains compound containing Si, boride alloy, containing Al Compound, compound containing Ga, compound containing Na, compound containing K, compound containing Mg, compound containing Ca, compound containing Zn and containing RE Compound, such as the carbonate containing aforementioned each element, nitrate, sulfate, oxide, and the content of the aforementioned each component referred to In terms of the oxide of each element, the carbonate of specific each element, nitrate, sulfate, oxide selected as this field Known to technical staff, details are not described herein.
In the glass composition of the present invention, when preparing aluminium borosilicate glass using it, why glass is enabled to With excellent comprehensive performance, the especially mutual cooperation being mainly attributed in composition between each component, SiO2、B2O3、 Al2O3、Ga2O3、Na2O、K2O, MgO, CaO, ZnO and RE2O3Between mating reaction, each group of more particularly aforementioned certain content / mutual cooperation, particularly limit the Ga of content and ratio2O3Introducing, effectively improve chemical strengthening performance and Shock resistance.It is introduced separately into Al2O3It can accelerate the process and depth of ion exchange, but it fights for the very capable of free oxygen, It is a large amount of to introduce Al2O3The degree of opening of glass structure can be reduced, glass is made to tend to rigidity, increases the brittleness of glass.It can cause simultaneously The easy devitrification of glass, coefficient of thermal expansion reduce and are difficult to match with periphery material, high temperature surface tension and high temperature viscosity are excessive, increasing Process of glass difficulty etc..Ga2O3And Al2O3It is all third major element, ligancy is mainly four and six in glass, no Same ligancy has opposite impacts on glass structure and ion-exchanging efficiency.Work as Ga2O3When occurring with four-coordination, effect with Al2O3Very much like, due to gallium oxygen tetrahedron volume bigger, the ability for accelerating alkali metal ion activity is stronger, therefore it is in glass It can play the role of repairing Network Closing degree simultaneously in structure and accelerate ion exchange, can substantially add in chemical strengthening process The process of fast ion exchange, while the high temperature viscosity rate of climb is significantly less than Al2O3.But due to Ga3+With larger ion Radius and smaller electric field strength, with Ga2O3Content increases, and radius ratio effect makes Ga3+In tetrahedral stability substantially Decline, the Ga of height coordination2O3Network will be broken, reduce glass compactness extent, low temperature viscosity is caused to reduce, is unfavorable for bigger Dimensional stability in size glass substrates chemical strengthening process, it is intended to which there is warpage and the thermal contraction of bigger.Therefore Al2O3 And Ga2O3Addition resultant and ratio receive special restriction, on the basis of the weight of the composition, in terms of oxide, combination Object contains the Al of 3-17wt%2O3+Ga2O3, and 0<Ga2O3/(Al2O3+Ga2O3)<0.6。
Second aspect, the present invention provides a kind of aluminium borosilicate glass, on the basis of the weight of the glass, the glass Glass contains the SiO of 40-60wt%2, 10-40wt% B2O3, 3-17wt% Al2O3+Ga2O3, 11-18wt% Na2O、0- The K of 5wt%2O, the RE of the ZnO and 0.1-4wt% of CaO, 0-4wt% of MgO, 0.1-13wt% of 0-8wt%2O3
Preferably, in aluminium borosilicate glass, by weight percentage, 0<Ga2O3/(Al2O3+Ga2O3)<0.6, further Preferably, on the basis of the weight of glass, Al2O3+Ga2O3Content be 3.5-13wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, RE2O3Content for 0.3-3wt%, and RE2O3For rare earth oxide Y2O3、La2O3、Gd2O3、Ce2O3、Yb2O3And Lu2O3At least one of, and by weight percentage, Y2O3+La2O3>0wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, SiO2Content be 45-55wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, B2O3Content be 15-35wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, the content of MgO is 2-6wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, the content of CaO is 1-9wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, Na2The content of O is 12-16.5wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, K2The content of O is 1-4wt%.
Preferably, in aluminium borosilicate glass, on the basis of the weight of glass, the content of ZnO is 0.1-3wt%.
The third aspect, the present invention provides a kind of method for preparing aluminium borosilicate glass, this method includes will be of the invention The glass carries out melt process, forming processes, annealing and machining processes successively with composition.
In the method for the present invention, aforementioned corresponding contents description is referred to for specific limit of glass composition, herein It repeats no more.
In the case of process of the present invention it is preferred, the condition of melt process includes:Temperature is less than 1450 DEG C, and the time is big In 1h.Those skilled in the art can specific melting temperature and melting time determines according to actual conditions, this is this field skill Known to art personnel, details are not described herein.
In the case of process of the present invention it is preferred, the condition of annealing includes:Temperature is higher than 550 DEG C, further preferably Higher than 580 DEG C, the time is more than 0.1h.Those skilled in the art can specific annealing temperature and annealing determines according to actual conditions Time, this is well known to those skilled in the art, and details are not described herein.
In the method for the present invention, for machining processes, there is no particular limitation, can be common various in this field Mechanical processing mode, such as can be that the product that annealing obtains is cut, is ground, is polished.
In order to further improve the comprehensive performance of glass, under preferable case, this method, which further includes, obtains machining processes The product arrived carries out chemical intensification treatment.It is further preferred that the method for chemical intensification treatment includes:Machining processes are obtained To product be placed in 350-480 DEG C of melting KNO3Middle processing at least 0.1h.Those skilled in the art can be according to actual conditions Between determining the temperature of specific chemical intensification treatment and moving back, this is well known to those skilled in the art, and details are not described herein.
In the method for the present invention, it can be produced by the various Conventional glassmaking methods such as float glass process, press over system, glass tube down-drawing thick Plate glass or thickness of the degree more than 0.1mm<The flexible glass (corresponding to once moulding method) of 0.1mm, can also be by secondary The flexible glass that thin method production thickness is less than 0.1mm is drawn in melting.Therefore, if can obtain thickness by one-pass molding< During the flexible glass of 0.1mm, chemical intensification treatment can be directly carried out.If it is not less than by the thickness of glass that one-pass molding obtains 0.1mm, then this method can also be included in before chemical intensification treatment, the product obtained to machining processes carries out secondary molten Melt and draw thin processing, thickness of glass drawing is as thin as being less than 0.1mm, then carries out chemical intensification treatment.Under preferable case, described in control Machining processes or second melting draw the condition of thin processing to prepare the glass that thickness is less than 0.1mm, that is, at mechanical processing Reason or second melting draw the thin thickness of glass obtained (i.e. before chemical intensification treatment) that handles to be less than 0.1mm.For secondary molten Melt and draw the specific method of thin processing there is no particular limitation, can be various methods commonly used in the art, for example, second melting is drawn The condition of thin processing can include:It is flat less than 1mm that thickness is produced by glass-making processes such as float glass process, press over system, glass tube down-drawings Plate glass is transported to succeeding stretch molding machine inlet, with appropriate rate V by glass sheet0Mm/min is inwardly sent into drawing It stretches in forming furnace, control drawing and forming region viscosity is about 105.5-107With appropriate in the range of pool, by stretching-machine and roller Rate V1Mm/min carries out roll-to-roll winding, so as to obtain the ultrathin flexible glass board material that thickness is less than 0.1mm, the pull speed Rate V1More than V0
Fourth aspect, the present invention provides the aluminium borosilicate glass that the above method is prepared.
Under preferable case, aluminium borosilicate glass of the invention, elasticity modulus is higher than 80GPa, and density is less than 2.5g/cm3, Coefficient of thermal expansion in the range of 50-350 DEG C is less than 90 × 10-7/ DEG C, strain point temperature is higher than 550 DEG C, and annealing point is higher than 580 DEG C, Corresponding temperature is less than 1450 DEG C when viscosity is 200 pool.
Wherein, the glass that (i.e. machining processes or second melting draw thin processing) obtains before chemical intensification treatment breaks Split toughness KICMore than 0.9MPam1/2
Wherein, the fracture toughness K for the glass that chemical intensification treatment obtainsICMore than 3.3MPam1/2, what glass surface was formed Compression stress is in more than 800MPa, and compression stress layer depth is at 55 μm or more.
As previously mentioned, different technique can prepare the glass of different-thickness, it is each by float glass process, press over system, glass tube down-drawing etc. Kind Conventional glassmaking methods can produce plate glass or thickness that thickness is more than 0.1mm<The flexible glass of 0.1mm, passes through Second melting draws thin method that can also produce the flexible glass that thickness is less than 0.1mm.Preferably, machining processes or two Secondary melting draws the thin obtained thickness of glass that handles to be less than 0.1mm.
5th aspect, it is aobvious in preparation the present invention provides glass composition of the present invention or aluminium borosilicate glass Show device and/or solar cell and the application in the field that other need high strength glass material, be preferably used for making The screen surface of standby tablet or Flexible Displays product protection glass material, Flexible Displays product substrate glass substrate material, The substrate glass material of plane and/or flexible solar battery, plane and/or flexible solar battery cover-plate glass material, Safety glass, bulletproof glass, intelligent automobile glass, intelligent transportation display screen, intelligent show window, smart card ticket and other need height The application field of Strength-Glass material.
Embodiment
The present invention will be described in detail by way of examples below.It is unless otherwise instructed, used in following embodiment Each material can be commercially available, and unless otherwise instructed, method used is the conventional method of this field.
In following embodiment and comparative example, glass density, unit g/cm are measured with reference to ASTM C-6933
The thermal expansion coefficient of glass of 50-350 DEG C of horizontal expander instrument measure, unit 10 are used with reference to ASTM E-228-7/ ℃。
With reference to ASTM C-623 glass Young's modulus, unit GPa are measured using material mechanical test machine.
With reference to ASTM E-384 glass Vickers hardness, unit GPa are measured using Vickers.
With reference to ASTM E-1820 glass breakage toughness K is measured using universal testing machine and VickersIC, unit is MPa·m1/2
The annealing point and strain point of glass, unit are measured using 3 testers with reference to ASTM C-336 and ASTM C-338 For DEG C.
Glass high temperature viscosity-temperature curve is measured using rotation high-temperature viscosimeter with reference to ASTM C-965, wherein, during 200P viscosity Corresponding temperature T2.3, unit is DEG C;Corresponding temperature T during 30000p viscosity30000p, unit is DEG C.
Glass surface compression stress (unit MPa) and compression stress layer depth are measured using FSM-6000LE surface stress meters Degree (unit is μm).
The impact resistance of glass is measured using falling ball impact test machine with reference to GB15763.2-2005.Using a diameter of The smooth steel ball in 63.5mm (quality is about 1040g), surface is freely fallen from certain height, minimum height when test is broken Degree, unit mm.
Embodiment 1-8
Each component is weighed according to the glass composition shown in table 1, mixing pours into mixture in platinum crucible, Ran Hou It heats 4 hours in 1430 DEG C of resistance furnace, and is stirred using platinum stick to discharge bubble.The glass metal melted is poured into not It becomes rusty in steel cast iron grinding tool, is configured to defined both bulk glasses product, then by glassware in the lehr, anneal 2 hours, close Power supply furnace cooling is closed to 25 DEG C.Glassware is cut, ground, is polished, the glass of 80*80*1mm that polishing is obtained The surface of product is put into 440 DEG C of melting KNO after being cleaned up with deionized water3Middle processing 3h then takes out and is cooled to 25 DEG C, it is cleaned up and dried with deionized water, glass finished-product is made.The various performances of each glass finished-product are measured respectively, It the results are shown in Table 1.
Table 1
Embodiment 9-12, comparative example 1-3
According to the method for embodiment 1, the difference is that, mixture ingredient (corresponding glass composition) and the obtained performance of product Measurement result is shown in Table 2.
Table 2
The data of embodiment 9 and embodiment 12 in table 2 are compared it is found that by weight percentage, 0<Ga2O3/(Al2O3+ Ga2O3)<When 0.6, thermal stability, chemical strengthening characteristic, shock resistance and toughness of glass etc. can be further improved.
Data in table 1-2 are compared it is found that the method for the present invention utilizes the SiO containing certain content2、B2O3、Al2O3、 Na2O、K2O, MgO, CaO, ZnO and RE2O3The glass that is prepared with composition of glass, elasticity modulus is higher than 80GPa, density Less than 2.5g/cm3, the coefficient of thermal expansion in the range of 50-350 DEG C is less than 90 × 10-7/ DEG C, strain point temperature is higher than 550 DEG C, moves back Fire point is higher than 580 DEG C, corresponding temperature (T when viscosity is 200 pool2.3) less than 1450 DEG C;Wherein, before chemical intensification treatment, glass The fracture toughness K of glassICMore than 0.9MPam1/2;The fracture toughness K for the glass that chemical intensification treatment obtainsICMore than 3.3MPa m1/2, in more than 800MPa, compression stress layer depth can be effectively prevented the compression stress that glass surface is formed at 55 μm or more It shows the impact of product glass surface and scratches damage.The glass composition or aluminium borosilicate glass of the present invention can be used for making Standby display device and/or solar cell and other need the field of high strength glass material, particularly for preparing tablet or soft Property the screen surface protection glass material of display product, the substrate glass substrate material of Flexible Displays product, plane and/or soft Property the substrate glass material of solar cell, the cover-plate glass material of plane and/or flexible solar battery, safety glass, anti- Play glass, intelligent automobile glass, intelligent transportation display screen, intelligent show window and smart card ticket etc..
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above Detail, within the scope of the technical concept of the present invention, a variety of simple variants can be carried out to technical scheme of the present invention, this A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should also be regarded as the disclosure of the present invention.

Claims (22)

1. a kind of glass composition, which is characterized in that on the basis of the weight of the composition, in terms of oxide, the composition SiO containing 40-60wt%2, 10-40wt% B2O3, 3-17wt% Al2O3+Ga2O3, 11-18wt% Na2O, 0-5wt% K2O, the RE of the ZnO and 0.1-4wt% of CaO, 0-4wt% of MgO, 0.1-13wt% of 0-8wt%2O3, and RE2O3For rare earth oxide Y2O3、La2O3、Gd2O3、Ce2O3、Yb2O3And Lu2O3At least one of, and by weight percentage, Y2O3+La2O3>0wt%;
By weight percentage, 0<Ga2O3/(Al2O3+Ga2O3)<0.6。
2. composition according to claim 1, which is characterized in that on the basis of the weight of the composition, in terms of oxide, Al2O3+Ga2O3Content be 3.5-13wt%.
3. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, RE2O3Content be 0.3-3wt%.
4. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, SiO2Content be 45-55wt%.
5. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, B2O3Content be 15-35wt%.
6. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, the content of MgO is 2-6wt%.
7. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, the content of CaO is 1-9wt%.
8. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, with oxide Meter, Na2The content of O is 12-16.5wt%.
9. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, K2The content of O For 1-4wt%.
10. composition according to claim 1 or 2, which is characterized in that on the basis of the weight of the composition, ZnO's contains It measures as 0.1-3wt%.
11. composition according to claim 1, which is characterized in that the composition also contains fining agent;With the composition Weight on the basis of, the content of fining agent is not more than 1wt%.
12. composition according to claim 11, which is characterized in that the fining agent is sulfate, nitrate, tin oxide At least one of with stannous oxide.
A kind of 13. method for preparing aluminium borosilicate glass, which is characterized in that this method includes will be arbitrary in claim 1-12 Glass described in one carries out melt process, forming processes, annealing and machining processes successively with composition.
14. according to the method for claim 13, which is characterized in that this method further includes the production obtained to machining processes Object carries out chemical intensification treatment.
15. according to the method for claim 14, which is characterized in that this method further includes:It is right before chemical intensification treatment The product that machining processes obtain carries out second melting and draws thin processing.
16. according to the method for claim 15, which is characterized in that the machining processes or second melting is controlled to draw The condition of thin processing with prepare thickness be less than 0.1mm glass.
17. according to the method for claim 16, which is characterized in that the fracture of the glass obtained before the chemical intensification treatment Toughness KICMore than 0.9 MPam1/2
18. according to the method for claim 17, which is characterized in that the fracture for the glass that the chemical intensification treatment obtains is tough Property KICMore than 3.3 MPam1/2, the compression stress that glass surface is formed is in more than 800MPa, and compression stress layer depth is at 55 μm More than.
19. the aluminium borosilicate glass that the method in claim 13-18 described in any one is prepared.
20. aluminium borosilicate glass according to claim 19, which is characterized in that the elasticity of the aluminium borosilicate glass Modulus is higher than 80GPa, and density is less than 2.5g/cm3, the coefficient of thermal expansion in the range of 50-350 DEG C is less than 90 × 10-7/ DEG C, strain Point temperature is higher than 550 DEG C, and annealing point is higher than 580 DEG C, and corresponding temperature is less than 1450 DEG C when viscosity is 200 pool.
21. in the glass composition or claim 19-20 in claim 1-12 described in any one described in any one Application of the aluminium borosilicate glass in display device and/or solar cell is prepared.
22. aluminium borosilicate glass according to claim 21 answering in display device and/or solar cell is prepared With, which is characterized in that the application is in screen surface protection glass material, the flexibility for preparing tablet or Flexible Displays product Show the substrate glass substrate material of product, the substrate glass material of plane and/or flexible solar battery, plane and/or soft The cover-plate glass material of property solar cell, safety glass, bulletproof glass, intelligent automobile glass, intelligent transportation display screen, intelligence Application in show window and smart card ticket.
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