CN102351420B - High strength ultrathin float glass - Google Patents
High strength ultrathin float glass Download PDFInfo
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Abstract
The invention discloses a kind of high strength ultrathin float glass, comprising the following ingredients: 60-62 wt% of SiO2, 12-15 wt% of Al2O3, 0.4-1.1 wt% of CaO, 6.5-8 wt% of MgO, 11-13 wt% of Na2O, 3-5 wt% of K2O, 1-1.2 wt% of Li2O, 0.5-1 wt% of ZnO, 1-1.5 wt% of B2O3, wherein, the total amount of SiO2, B2O3 and Al2O3 accounts for 73-76.5 wt%, the total amount of SiO2 and Al2O3 accounts for 72-75 wt%, the total amount of MgO and CaO accounts for 7-9 wt%, the total amount of Li2O, Na2O and K2O accounts for 15-18 wt%, and the molar ratio of n(K2O) to n(Na2O) is 0.15-0.3. The high strength ultrathin float glass has the characteristics of high chemical stability, high hardness, and large intensity, and simultaneously satisfies the special molding demands for ultrathin float glass.
Description
Technical field
The present invention relates to a kind of float glass, especially a kind of high strength slim float glass.Even more particularly, the present invention relates to as the high speed vehicles such as automobile, steamer, railway locomotive and aircraft keep out the wind shatter proof glass and high-end residential shatter proof glass.
Technical background
Along with fast development of national economy, the flat glass industry of China has entered the quick expanding phase, and it is the first that glass output occupies the whole world for years, and floatation glass production line reaches more than 200, but most products all are common float glasses, and the high strength slim float glass also can't be produced.Cause common float glass production capacity seriously superfluous, and high-quality, special type, a large amount of dependence on import of high-strength glass, the out of control and unreasonable products structure of the production capacity of whole industry also makes enterprise's production and operation difficulty, and the business economic benefit obviously glides, and loss increases.From the future development of sheet glass industry, high-quality high strength slim float glass is the emphasis of industry future development, also is the industrial development direction of clearly stipulating in the national industry structural adjustment.
Along with the development of transportation, the human consumer is more and more higher in requirements attractive in appearance, comfortable and aspects such as environmental protection, safety to the vehicles especially automobile, bullet train.The vehicle glass in past is mainly born the basic function of keeping out wind and rain and the clear visual field being provided, and modern automobile-used windshield integrated a lot of specific functions, utilize high strength slim glass to make the problem that can solve glass rapid heat dissipation in winter behind the vehicle safety glass, have good insulation effect and prevent the effect of frosting.The high strength slim float glass can be widely used in windshield and the high-end residential shatter proof glass of the various vehicles, and especially the use at bullet train and aircraft has the advantage that other material hardly matches.The application of this type of high strength slim glass will improve security, comfortableness and the aesthetic feeling of the vehicles greatly, adapt to the trend of various used for vehicle glass thinningizations, can satisfy various vehicles configuration design requirements preferably.In addition; the high strength slim float glass also is widely used in plasma display, LCD TV, liquid-crystal display, Cash Machine protection screen, touch-screen, PDA, PSP, information inquiry machine, media advertisement player; can prevent from showing the impact of product screen surface effectively and scratch infringement, prolong the work-ing life of product.
Summary of the invention
The objective of the invention is in order to overcome the deficiency in the existing sodium calcium silicon thin float glass technology, a kind of high strength slim float glass is provided, its compare with common float glass have the chemical stability height, hardness height, characteristics that intensity is big, satisfy the special moulding demand of thin float glass simultaneously.
A kind of high strength slim float glass is characterized in that, is that basal component and the consumption of unit is as follows with the weight percent: SiO
2Consumption is: 60～62%, Al
2O
3Consumption is: 12～15%, CaO consumption is: 0.4～1.1%, MgO consumption is: 6.5～8%, Na
2The O consumption is: 11～13%, K
2The O consumption is: 3～5%, Li
2The O consumption is: 1 ~ 1.2%, ZnO consumption is: 0.5 ~ 1%, B
2O
3Consumption is: 1 ~ 1.5%; In the basic component, SiO
2+ B
2O
3+ Al
2O
3Resultant is 73 ~ 76.5%, SiO
2+ Al
2O
3Resultant is that 72 ~ 75%, MgO+CaO resultant is 7 ~ 9%, Li
2O+Na
2O+K
2The O resultant is 15 ~ 18%, and n (K
2O)/n(Na
2O) molar ratio is 0.15 ~ 0.3.
A kind of high strength slim float glass of the present invention is that preferred ingredient and the consumption of unit is as follows with the weight percent: SiO
2Consumption is: 60～61.5%, Al
2O
3Consumption is: 12 ~ 14%, CaO consumption is: 0.4～0.8%, MgO consumption is: 6.5～8%, Na
2The O consumption is: 11～12.5%, K
2The O consumption is: 3.0～4.5%, Li
2The O consumption is: 1 ~ 1.2%, ZnO consumption is: 0.5 ~ 1%; B
2O
3Consumption is: 1 ~ 1.2%.SiO in the component
2+ B
2O
3+ Al
2O
3Resultant is that 73 ~ 76%, MgO+CaO resultant is 7 ~ 8.5%, Li
2O+Na
2O+K
2The O resultant is 15 ~ 18%, and n (K
2O)/n(Na
2O) molar ratio is 0.15 ~ 0.3.
The preparation method of glass of the present invention is: will contain SiO
2, Al
2O
3, CaO, MgO, Na
2O, K
2O, Li
2O, ZnO, B
2O
3More than the quartz sand (SiO of each component
2〉=99%) aluminum oxide powder (Al,
2O
3〉=99.5%) Paris white (CaCO,
3〉=99%), magnesiumcarbonate powder (MgO 〉=44.5%), industrial soda ash (Na
2CO
3〉=98.5%) salt of wormwood (K,
2CO
3〉=99%) Quilonum Retard (Li,
2CO
3〉=97%), zinc oxide (ZnO 〉=99%), boric acid (H
3BO
3〉=99.5%) according to component given weighing accurate in scale and evenly mixing, is prepared into qualified admixtion.The finings add-on is: chemical pure cerium oxide (CeO
2〉=99.95%) account for 0.01 ~ 0.5% of admixtion total amount, chemical pure sodium-chlor (NaCl 〉=99.5%) accounts for 0.8 ~ 1.5% of admixtion total amount.This admixtion is founded in glass-melting furnace, in 1550 ℃ of insulations 2 hours, 800 ℃ ~ 1200 ℃ of ranges of working temperature.
The present invention only adopts chemical pure cerium oxide CeO
2With a small amount of chemical pure NaCL as finings, found with finings and do not melted or the influence of moulding atmosphere.CeO
2Add-on accounts for 0.01 ~ 0.5% of admixtion total amount, and the NaCl add-on accounts for 0.8 ~ 1.5% of admixtion total amount can obtain bubble-free glass, can not influence the work-ing life of high temperature service.
The present invention introduces composition SiO
2, Al
2O
3, CaO, MgO, Na
2O, K
2O, Li
2O, ZnO, B
2O
3In the raw materials such as quartz sand, aluminum oxide powder, Paris white, magnesiumcarbonate powder, soda ash, salt of wormwood, Quilonum Retard, zinc oxide, boric acid of each component when forming admixtion, should satisfy the certain particle requirement.The size-grade distribution span of control of quartz sand is at 75 μ m ~ 250 μ m, and wherein 125 μ m ~ 250 μ m are no less than 90%, granularity must not be arranged greater than the particle of 250 μ m.The raw material of introducing aluminum oxide adopts industrial oxidation aluminium powder, and granularity is controlled at 48 μ m ~ 80 μ m, granularity must not be arranged greater than the particle of 80 μ m.The size-grade distribution of Paris white and magnesiumcarbonate powder is at 75 μ m ~ 380 μ m, and wherein 125 μ m ~ 380 μ m are no less than 80%, granularity must not be arranged greater than the particle of 380 μ m.Soda ash, salt of wormwood, Quilonum Retard median size are controlled at 75 μ m; Zinc oxide median size 50 μ m; Boric acid size-grade distribution span of control must not have granularity greater than the particle of 250 μ m at 63 μ m ~ 250 μ m.
The glass sample that the present invention utilizes described a kind of high strength slim float glass component to found, the temperature of serial intrinsic viscosity point is respectively: 10
3The temperature of dPas viscosity is below 1350 ℃; 10
4The temperature of dPas viscosity is below 1160 ℃; 10
7.6The temperature of dPas viscosity is below 780 ℃ 10
14.5The temperature of dPas viscosity is below 515 ℃.
The present invention utilizes the surface tension of the glass sample that described a kind of high strength slim float glass component founds to test by drop-weight method, being 0.35N/M, 1300 ℃ at 1200 ℃ is 0.32N/M for 0.33N/M, 1400 ℃, surface tension with common float glass, 1200 ℃ to be 0.348N/M, 1300 ℃ be 0.32N/M for 0.327N/M, 1400 ℃, substantially suitable, advantage is that described a kind of high-strength thin float glass is particularly suitable for melting process and the moulding process of float glass.The surface tension of glass refers on glass and another the contacted phase interface, under constant temperature, constant volume, and the merit of doing when increasing a per surface.The float flat glass production principle is based on the effect of glass surface tension, and polishing time and the polishing effect of glass in molten tin bath mainly is to be determined by the surface tension of glass under mold temperature.The needs and the high speed drawing that are fit to float glass process moulding and self polishing according to capillary test shows glass ingredient of the present invention.
The invention has the beneficial effects as follows aluminium content up to 15% o'clock, by adjusting other component ratios, 1550 ℃ of glass melting temperature, 800 ~ 1200 ℃ of ranges of working temperature can satisfy the needs of float glass fusing and moulding fully.
Component of the present invention is compared as shown in table 1 with common thin float glass component
Table 1
| ? | SiO 2 | Al 2O 3 | Fe2O3 | CaO | MgO | Na 2O | K 2O | Li 2O | ZnO | B 2O 3 |
| Common | 71.5~72.3 | 1.3~1.5 | 0.04~0.07 | 7.1~8.2 | 4.3~4.7 | 12.5~13.4 | 0.7~1.0 | ? | ? | ? |
| The present invention | 60～62 | 12～15 | 0.01~0.03 | 0.4~1.1 | 6.5～8 | 11～13 | 3～5 | 1~1.2 | 0.5~1 | 1~1.5 |
As known from Table 1, glass ingredient of the present invention and common thin float glass component Comparatively speaking, high strength slim float glass component of the present invention belongs to the aluminosilicate system glass, common thin float glass component belongs to the sodium-calcium-silicate system glass.Al in the high strength slim float glass component of the present invention
2O
3Content is 12 ~ 15%, than Al in the common thin float glass component
2O
3Content has improved nearly 10 times, so high Al
2O
3Content has the effect that improves strain point of glass and Young's modulus, at Na
2O-RO-Al
2O
3-SiO
2In the glass system, Al
2O
3Content improves, and the hardness of glass, physical strength rise, and thermal expansivity descends, and is conducive to the raising of glass machinery performance.Al
3+At Na
2O-MgO-Al
2O
3-SiO
2Content and overall ratio in the glass system have determined Al
3+Network structure in glass, thus the mechanical property that it is special determined.
Glass ingredient of the present invention is compared SiO with common thin float glass component
2Low, the Al of content
2O
3The content height is equivalent to use Al in glass ingredient
2O
3Replace SiO
2, both guaranteed that the total body burden of network organizer is not less than 70%, can make glass properties reach service requirements again.Al
2O
3+ SiO
2Resultant is between 72 ~ 75%.
Glass ingredient CaO+MgO resultant 7 ~ 9% of the present invention, the raising MgO of appropriateness can reduce the high-temperature viscosity of glass, reduce tendency towards devitrification and the crystallization speed of glass, improve physical strength and chemical stability, the thermostability that improves glass also there is desirable influence, should the corresponding content that increases MgO when ultra-thin glass is produced.The viscosity of the glass of MgO has complicated effect, when temperature is higher than 1200 ℃, the viscosity of glass metal is reduced, and between 900～1200 ℃, the tendency of the viscosity increase that makes glass metal is arranged again.
ZnO is essential composition in the glass ingredient of the present invention, for improve glass at high temperature meltbility and contain 0.5 ~ 1%.When making by float glass process, can when the float glass process moulding, reduce and make glass formation defective above 1%.
The basic structure of glass is mainly by glass-former such as B
2O
3, SiO
2, Al
2O
3, P
2O
5Can form glass separately; Glass modifier such as Li
2O, Na
2O, K
2O, MgO, CaO etc. can not form glass but can change network structure changes glass properties; Glass intermediate such as ZnO, TiO
2, Al
2O
3Wait it between glass-former and glass modifier, form network or outside network, directly influence the main character of glass according to overall composition characteristics or participation.The Al of component of the present invention
2O
3With SiO
2Fellowship is formed glass network.
Glass ingredient of the present invention does not break away from basic glass ingredient, and this mainly is owing to determine the oxide compound of glassy product salient features, is generally 3 ~ 4 kinds, and total amount often accounts for about 90% of the total composition of glass; The thermodynamic condition, dynamic conditions, the crystal chemistry condition that are formed by glass are simultaneously determined.A kind of glass ingredient that has Practical significance, meets expection physical-chemical property and processing performance of design at present still needs by repeatedly practice and performance measurement composition repeatedly to be proofreaied and correct.Design new constituent simultaneously and do not abandon original parent glass, and in order to improve some character, only need composition is done local the adjustment.High strength slim float glass component of the present invention designs to aluminosilicate system and the transition of borosilicate system according to the float glass process shaping characteristic on common sodium calcium silicon float glass composition basis.
As everyone knows: the material external attribute is the reflection of internal structure. any physics and the physicochemical property of glass, all be decided by its chemical ingredients and internal structure state, glass ingredient directly has influence on the various performance index of glass, if will improve intensity and the hardness of existing thin float glass, have only by changing or adjust the component of existing thin float glass, just can make its performance index satisfy design requirement; And glass ingredient directly has influence on Vitrea high temperature viscosity, high temperature viscosity has influence on the diffusion of strain point of glass, processing temperature, reaction product and clarification subsequently, homogenizing and molding mode etc. again, so glass ingredient is related to the quality of the type of glass that will produce, glass properties, glass quality.
The character of glass determines that by glass structure glass ingredient has determined glass structure.Form the glass properties that reaches required for fixing glass, must consider the characteristics of floating process, therefore the variation range to several glass oxide compounds limits, and gets rid of some raw material, selects suitable finings and proper raw material component, raw material granularity, raw material consumption etc.Brief description is each constitutive property of the present invention once:
[SiO
2]
Si0
2Be the glass network former oxide compound, can improve physical strength, chemical stability, thermostability of glass etc., but it be the material than infusibilityization again.Work as Si0
2Content is lower than at 60% o'clock, and glass hard (HRC65 and physical strength are low excessively, the chemical stability variation.But work as Si0
2Content is higher than at 62% o'clock, thereby then high temperature viscosity will raise and reduce the glass melting performance.Therefore, Si0
2Content is not less than 60%, and is not higher than 62%.
[Al
2O
3]
Al
2O
3Be the active principle that improves the glass swelling softening temperature, simultaneously also and SiO
2Common formation glass body.Its existence makes glass have high chemical stability and excellent material mechanical property.This monoxide has increased anti-chemical capacity and the strain point temperature of glass.Add a spot of Al
2O
3Can improve glass increased devitrification resistance and water tolerance effectively.Al of the present invention
2O
3If content is lower than at 12% o'clock; hardness and the intensity of glass are too small; can not satisfy the demand of various vehicles windscreen shatter proof glasses and screen protection material; therefore be necessary more than 12% at least; when its consumption is higher than 15% when above, Vitrea viscosity is excessive, the glass melting temperature of the fusing of glass and clarification difficulty, glass batch is too high, glass defect increases.
[R
2O]（R=Li，Na，K）
R
2O is solubility promoter, has the effect that reduces melt temperature, because Na
2O and K
2The interaction of O and can improve the processability of glass effectively reduces tendency towards devitrification significantly.When its resultant less than 15, there is not effect, therefore preferably more than 15%, yet, even add slightly deformation point is reduced greatly, and the aggressiveness of refractory brick is increased, so its consumption Li
2O+K
2O+Na
2O should be below 18%.
Li
2O, K
2O, Na
2O is network modifying oxide, can make silicon-oxy tetrahedron [Si0 after the introducing
4] lax, the fracture of formed network, thereby solve Si0
2The problem of infusibilityization can be used as fusing assistant.Li
2O, K
2O, Na
2The introducing of O has reduced physical strength, chemical stability and the thermostability etc. of glass, but also is the root that causes weathering of glass.Therefore, Li
2O, K
2O, Na
2O is suitably low to be better.But work as Li
2O, K
2O and Na
2When the O total amount is too low, cause the glass melting difficulty; When total amount is too high, thermal expansivity will increase substantially, and strain point significantly reduces.
The present invention passes through Li
2O, Na
2O and K
2The O mixed alkali effect can easier realization improve the glass melting performance, improves the purpose of chemical stability.K in the component of the present invention
2O content mainly is to increase glass transparent degree and gloss than general ultra-thin glass composition height.The present invention recommends Li
2O, K
2O and Na
2O share.So K
2O content is designed to 3-5%, Na
2O content is designed to 11-13%, Li
2O content is designed to 1-1.2%.
[MgO]+?[CaO]
MgO and CaO are network modifying oxides, can significantly reduce the high temperature viscosity of glass, improve the low temperature viscosity of glass, make glass can be easy to fusion when high temperature, and this high speed pulling of producing for float glass process has been created good condition.Bivalent metal oxide is filled in the space of glass network after introducing, and stops diffusion and the migration of alkalimetal ion, the spread coefficient of alkalimetal ion is diminished, utilize this kind depressor effect and blocking effect, improve glass properties, improve the chemical stability of glass.Improving aspect the physical strength of glass, chemical stability and the thermostability again than K
2O, Na
2O is superior, and CaO content is 0.4～1.1%, MgO content design, 6.5 ~ 8%, MgO+CaO resultant 7 ~ 9%.
[B
2O
3]
B
2O
3And SiO
2The same, be that glass generates body.A spot of B
2O
3At high temperature play fluxing action, reduce glass viscosity, therefore can accelerate glass melting.B
2O
3Also can reduce the crystallization property of glass, improve thermostability and the chemical stability of glass.But the high B of temperature of fusion
2O
3More easy volatilization causes glass surface silicon content height, forms one deck skin (foam) and is difficult to fusing again, causes glass quality bad.Glass ingredient glass melting temperature of the present invention is no more than 1550 ℃, prevents the volatilization of boron preferably.B
2O
3Content is 1 ~ 1.5%.
[ZnO]
ZnO can improve melting effectively, improves thermostability and the chemical stability of glass, but its easy lost of life of volatilizing and can make smelting furnace, therefore should be below 1%.
SiO has been proposed in the composition of the present invention especially
2+ B
2O
3+ Al
2O
3Resultant is 73 ~ 76.5%, if resultant is lower than 73%, glassy product can not satisfy high-intensity service requirements; If resultant is higher than 76.5%, then liquidus temperature improves, and can aggravate the erosion of refractory materials.
Special n (the K that proposes in the component of the present invention
2O)/n(Na
2O) molar ratio 0.15 ~ 0.3, and mixed alkali effect can demonstrate fully, and alkalimetal ion is more firm with being connected of silica skeleton, and glass chemistry stability is increased, and physical strength increases.
For the glassy product that guarantees composition of the present invention has the stable of a good inner quality and glass metal stream, the total iron content of strict control glass, i.e. Fe in the raw material
2O
3Seem very important, Fe in the glass with the control and management to iron in the production
2O
3Content control is preferably 50 ~ 100ppm below 150ppm.
The test of each performance of glass is carried out in accordance with the following methods among the present invention:
The glass micro-vickers hardness adopts digital display microhardness instrument, utilizes the polarizing microscope of Lay thatch ORTHOPLAN to utilize the Vickers pressure head according to the polarizing microscope detailed rules for the implementation, and load is 100g, and the time of exerting pressure is 30 seconds.
Utilize MTS810 pottery experimental machine that Young's modulus is tested; Adopt the INSTRON-5566 universal testing machine, test with reference to the flexural strength of ASTMC109 and ultimate compression strength.
Utilize falling ball impact test machine, adopting the impact ball weight is 227g, carries out glass impact fracture energy test with reference to ASTMD256.
The glass visible light transmissivity adopts GB5433-85, tests through Cary500 type spectrophotometer.
Measuring method and instrument that the viscosity number that tested glass is different adopts are different.10
3DPas and 10
4The dPas viscosity measurement is adopted the rotation high temperature viscosimeter with reference to the ASTMC-965 standard; 10
7.6The dPas viscosity measurement is with reference to ASTMC-338, the special softening point apparatus in lining; 10
14.5The dPas viscosity measurement is used coefficient of expansion determinator with reference to ASTMC-228.Test result is as shown in table 2.
Table 2
Hardness is that the expression object is resisted the ability that other object is invaded, and microhardness value is more big, and its anti-scratch resistance ability is more strong.Material deforms under the effect of external force, and the character that can recover original form after external force is removed is called elasticity, the main thrum modulus of the elasticity of glass (being Young's modulus), and the glass that Young's modulus is high is even there is the external force effect also can resile rapidly.Glass is a kind of hard brittle material, index expressions such as its physical strength ultimate compression strength, folding strength, the damaged energy of shock resistance, physical strength height, long service life.
Vickers microhardness reached 650MPa, ultimate compression strength and reaches that 800 Mpa, folding strength reach 75 Mpa, the damaged energy of shock resistance is 3.0J when the present invention had guaranteed that by reasonable adjustment glass ingredient content high strength slim float glass thickness is 1.1mm, the physical strength of more common thin float glass increases by 10% ~ 50%, satisfy transmission of visible light 91% simultaneously, can satisfy the wear resisting property requirement of safety requirements and the electronics and IT products of various used for vehicle windshield glass products.
The present invention compared with prior art has following beneficial effect: the glass that component of the present invention is produced has better external force resistance impact property (Young's modulus height), scratch resistance performance (microhardness is big) and more high compressive strength and folding strength, longer work-ing life (the damaged energy height of shock resistance) than common thin float glass.The ultra-thin glass of component of the present invention is particularly useful for the vehicles such as automobile, steamer, railway locomotive and aircraft keep out the wind shatter proof glass and high-end residential shatter proof glass.
A kind of high-strength thin float glass of the present invention can be widely used in windshield and the high-end residential shatter proof glass of the various vehicles.The application of the high-strength thin float glass of this kind will improve security, comfortableness and the aesthetic feeling of the vehicles greatly, adapt to the trend of various vehicles glass thinningizations, can satisfy various vehicles configuration design requirements preferably.
A kind of high-strength thin float glass product thickness of the present invention is 0.55mm-2.0 mm.Product line thickness is: 1.8 mm, 1.5 mm, 1.3 mm, 1.1 mm, 1.0 mm, 0.85 mm, 0.7 mm, 0.55 mm.Online cut size: long 4000 mm of maximum plate, long 600 mm of minimum plate; Wide 3210 mm of maximum plate, wide 300 mm of minimum plate.Can satisfy the needs of different purposes and specification, can adopt floating process to carry out large-scale production.
A kind of high-strength thin float glass of the present invention adapts to market just the demand trend of various windshield glass of transportation facility attenuateizations is produced, when making automobile interlayer (or hollow) glass, the number of plies of former automobile laminated glass (or hollow) is tailed off, weight lightens, compliance with environmental protection requirements more.
Embodiment
Be described in further detail below in conjunction with the present invention of embodiment, given embodiment does not constitute any limitation of the invention:
A kind of high strength slim float glass of the present invention is that basal component and the consumption of unit is as follows with the weight percent: SiO
2Consumption is: 60～62%, Al
2O
3Consumption is: 12～15%, CaO consumption is: 0.4～1.1%, MgO consumption is: 6.5～8%, Na
2The O consumption is: 11～13%, K
2The O consumption is: 3～5%, Li
2The O consumption is: 1 ~ 1.2%, ZnO consumption is: 0.5 ~ 1%, B
2O
3Consumption is: 1 ~ 1.5%.In the basic component, SiO
2+ B
2O
3+ Al
2O
3Resultant is 73 ~ 76.5%, SiO
2+ Al
2O
3Resultant is that 72 ~ 75%, MgO+CaO resultant is 7 ~ 9%, Li
2O+Na
2O+K
2The O resultant is 15 ~ 18%, and n (K
2O)/n(Na
2O) molar ratio is 0.15 ~ 0.3.
To contain SiO
2, Al
2O
3, CaO, MgO, Na
2O, K
2O, Li
2O, ZnO, B
2O
3More than the quartz sand (SiO of each component
2〉=99%) aluminum oxide powder (Al,
2O
3〉=99.5%) Paris white (CaCO,
3〉=99%), magnesiumcarbonate powder (MgO 〉=44.5%), soda ash (Na
2CO
3〉=98.5%) salt of wormwood (K,
2CO
3〉=99%) Quilonum Retard (Li,
2CO
3〉=97%), zinc oxide (ZnO 〉=99%), boric acid (H
3BO
3〉=99.5%) according to component given weighing accurate in scale and evenly mixing, is prepared into qualified admixtion.The finings add-on is: chemical pure cerium oxide (CeO
2〉=99.95%) account for 0.01 ~ 0.5% of admixtion total amount, chemical pure NaCl(NaCl 〉=99.5%) account for 0.8 ~ 1.5% of admixtion total amount.This admixtion is founded in glass-melting furnace, in 1550 ℃ of insulations 2 hours, 800 ℃ ~ 1200 ℃ of ranges of working temperature.
As shown in table 3 is the embodiment component:
Table 3 embodiment component
Embodiment 1: according to 1 flint glass F component in the table, through the floating process moulding, can obtain the high strength glass of thickness 1.1mm, microhardness 640MPa, ultimate compression strength 807 Mpa, folding strength 76.5 Mpa, the damaged energy 2.98J of impact resistance high strength slim float glass.
Embodiment 2: according to 2 flint glass F components in the table, through the floating process moulding, can obtain the high strength glass of thickness 0.55m, microhardness 638MPa, ultimate compression strength 798Mpa, folding strength 70.5 Mpa, the damaged energy 2.87J of impact resistance high strength slim float glass.
Embodiment 3: according to 3 flint glass F components in the table, through the floating process moulding, can obtain the high strength glass of thickness 1.1mm, microhardness 641MPa, ultimate compression strength 810 Mpa, folding strength 73.5 Mpa, the damaged energy 3.0J of impact resistance high strength slim float glass.
Embodiment 4: according to 4 flint glass F components in the table, through the floating process moulding, can obtain the high strength glass of thickness 0.7mm, microhardness 639.8MPa, ultimate compression strength 789 Mpa, folding strength 71.8 Mpa, the damaged energy 2.90J of impact resistance high strength slim float glass.Embodiment 5: according to 5 flint glass F components in the table, through the floating process moulding, can obtain the high strength glass of thickness 1.1mm, microhardness 640.5MPa, ultimate compression strength 816 Mpa, folding strength 72.6Mpa, the damaged energy 3.18J of impact resistance high strength slim float glass.
Embodiment 6: according to 6 flint glass F components in the table, through the floating process moulding, can obtain the high strength glass of thickness 1.1mm, microhardness 635.6MPa, ultimate compression strength 828 Mpa, folding strength 74.8 Mpa, the damaged energy 3.09J of impact resistance high strength slim float glass.
Claims (4)
1. high strength slim float glass, it is characterized in that: the basal component and the consumption that with the weight percent are unit are as follows: SiO
2Consumption is: 60～62%, Al
2O
3Consumption is: 12～15%, CaO consumption is: 0.4～1.1%, MgO consumption is: 6.5～8%, Na
2The O consumption is: 11～13%, K
2The O consumption is: 3～5%, Li
2The O consumption is: 1 ~ 1.2%, ZnO consumption is: 0.5 ~ 1%, B
2O
3Consumption is: 1 ~ 1.5%; In the basic component, SiO
2+ B
2O
3+ Al
2O
3Resultant is 73 ~ 76.5%, SiO
2+ Al
2O
3Resultant is that 72 ~ 75%, MgO+CaO resultant is 7 ~ 9%, Li
2O+Na
2O+K
2The O resultant is 15 ~ 18%, and n (K
2O)/n(Na
2O) molar ratio is 0.15 ~ 0.3; Adopt CeO
2With NaCl as finings, found with finings and do not melted or the influence of moulding atmosphere; CeO
2Add-on accounts for 0.01 ~ 0.5% of admixtion total amount, and the NaCl add-on accounts for 0.8 ~ 1.5% of admixtion total amount can obtain bubble-free glass.
2. according to the described a kind of high strength slim float glass of claim 1, it is characterized in that: the preferred ingredient and the consumption that with the weight percent are unit are as follows: SiO
2Consumption is: 60～61.5%, Al
2O
3Consumption is: 12 ~ 14%, CaO consumption is: 0.4～0.8%, MgO consumption is: 6.5～8%, Na
2The O consumption is: 11～12.5%, K
2The O consumption is: 3.0～4.5%, Li
2The O consumption is: 1 ~ 1.2%, ZnO consumption is: 0.5 ~ 1%; B
2O
3Consumption is: 1 ~ 1.2%, and SiO in the component
2+ B
2O
3+ Al
2O
3Resultant is that 73 ~ 76%, MgO+CaO resultant is 7 ~ 8.5%, Li
2O+Na
2O+K
2The O resultant is 15 ~ 18%, and n (K
2O)/n(Na
2O) molar ratio is 0.15 ~ 0.3.
3. according to the described glass of claim 1, it is characterized in that: it is shaped to plate glass by float glass process.
4. according to the described glass of claim 1, it is characterized in that: the ultra-thin glass that can be drawn into 0.55mm ~ 2mm by the sheet glass of float glass process moulding.
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| CN102531397B (en) * | 2012-01-11 | 2014-12-17 | 温州市汇顺达工贸有限公司 | Milky white glass ceramic suitable for all electric melting and preparation process for milky white glass ceramic |
| KR102462318B1 (en) * | 2012-05-31 | 2022-11-03 | 코닝 인코포레이티드 | Zircon compatible, ion exchangeable glass with high damage resistance |
| CN103771708A (en) * | 2014-01-09 | 2014-05-07 | 秦皇岛星箭特种玻璃有限公司 | High-strength display screen glass |
| CN104860532B (en) * | 2015-05-11 | 2017-02-01 | 海南中航特玻科技有限公司 | Composition of high-aluminum glass suitable for electric boosting |
| CN105060703B (en) * | 2015-09-06 | 2017-10-31 | 四川旭虹光电科技有限公司 | Electronic display unit high intensity protective glass plate |
| CN105923995A (en) * | 2016-04-26 | 2016-09-07 | 东莞市银通玻璃有限公司 | Ultrathin toughened glass and preparation method thereof |
| CN105967515A (en) * | 2016-05-11 | 2016-09-28 | 周琦钧 | Ultrathin opaque glass and preparation method thereof |
| CN105837039B (en) * | 2016-05-19 | 2018-05-04 | 台玻安徽玻璃有限公司 | A kind of high intensity float glass production method |
| CN105819668A (en) * | 2016-05-19 | 2016-08-03 | 台玻安徽玻璃有限公司 | Impurity removing method for mirror-manufacturing-level float glass |
| CN109694198B (en) * | 2017-10-23 | 2022-04-05 | 山东光耀超薄玻璃有限公司 | Improved glass production process for glass slide and cover glass |
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Application publication date: 20120215 Assignee: CLFG Longhai Electronic Glass Co., Ltd. Assignor: Luoyang Float Process Glass Group. Co., Ltd. Contract record no.: 2015410000087 Denomination of invention: High strength ultrathin float glass Granted publication date: 20130918 License type: Exclusive License Record date: 20150812 |
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