CN106904830A - A kind of low iron, ultrawhite, glass of superelevation aluminium and its preparation method and application - Google Patents
A kind of low iron, ultrawhite, glass of superelevation aluminium and its preparation method and application Download PDFInfo
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- CN106904830A CN106904830A CN201710208341.1A CN201710208341A CN106904830A CN 106904830 A CN106904830 A CN 106904830A CN 201710208341 A CN201710208341 A CN 201710208341A CN 106904830 A CN106904830 A CN 106904830A
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- ultrawhite
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
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Abstract
The invention discloses a kind of low iron, ultrawhite, the glass of superelevation aluminium and its preparation method and application, the glass includes following component by weight：58 70 parts of SiO2, 15 23 parts of Al2O3, 10 14 parts of Na2O, 16 parts of K2O, 38 parts of MgO, 0.5 2 parts of ZrO, 0.006 0.015 parts of Fe2O3, and CeO2、Er2O3, each 0.0005 0.03 parts of CoO, Se.Glass iron-holder in the present invention is extremely low, transmitance is higher, tone is penetrating, the purpose for improving thermal coefficient of expansion is reached, avoid using the larger metal containing Ba, Sr of proportion to improve glass expansion coefficient simultaneously, and the characteristics of the low iron of tool, super aluminium, high transmittance；The chemical enhanced time is short, and intensity is high, improves chemical enhanced efficiency.The original sheet glass of 0.2 6mm is can be made into, the various flat panel display terminals such as panel computer, smart mobile phone, GPS are widely used in.
Description
Technical field
The invention belongs to float glass technical field, specially a kind of low iron, ultrawhite, the glass of superelevation aluminium and its system
Preparation Method and application.
Background technology
Cover plate is one layer of glass material that capacitive touch screen outermost layer shields, and is contacted with extraneous due to direct,
In addition to the parameter requests such as surface smoothness, thickness, the attribute such as high rigidity, resistance to compression, scratch resistance has further determined the height of cover plate quality.
And glass cover-plate relative to other materials cover plate such as common soda lime glass, middle low aluminum silicon silicate glass on these important parameters
It is with the obvious advantage, therefore, it is increasingly becoming the main flow protection scheme of each touch technology.In general, touch module is by cover plate, sensing
Device module, the part of liquid crystal panel three carry out laminating and form.Current capacitance touch screen solution is still multiple technologies and deposits, film
Share the meal touch-control market with glass Liang great camps, but no matter film scheme (GF, GF2 etc.) or glass (GG, OGS etc.) scheme,
Glass cover-plate is all important building block.The intensity of cover-plate glass, wear-resisting, scratch-resistant requirement are higher, should ensure cover plate
Ultra-thin degree is it is also contemplated that its intensity, this is a technical barrier for float technology.
The content of the invention
It is an object of the invention to provide a kind of low iron, ultrawhite, the glass of superelevation aluminium and its preparation method and application, glass tool
There is intensity and case hardness higher, wear-resisting scratch resistance energy is especially suitable for use as the cover-plate glass of touch-screen.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of low iron, ultrawhite, the glass of superelevation aluminium
Glass, including following component by weight：58-70 parts of SiO2, 15-23 parts of Al2O3, 10-14 parts of Na2O, 1-6 part of K2O, 3-8 part
MgO, 0.5-2 part of ZrO, 0.006-0.015 parts of Fe2O3, and CeO2、Er2O3, CoO, Se it is each 0.0005-0.03 parts.
In preferred scheme, the composition also includes 0.0005-0.03 parts of Nd2O3。
In preferred scheme, including following component by weight：60-70 parts of SiO2, 15-22 parts of Al2O3, 11-13 parts
Na2O, 4-6 part of K2O, 3-5 part of MgO, 0.5-2 parts of ZrO, 0.006-0.015 parts of Fe2O3, and CeO2、Er2O3, CoO, Se it is each
0.0005-0.03 parts.
Further, in described composition, comprising 60-65 parts of SiO2, 15-16 parts of Al2O3, 11-13 parts of Na2O, 3-5 part
K2O, 3-5 part of MgO.
In preferred scheme, Na is controlled2O and Al2O3Mol ratio be 0.9-1.
In preferred scheme, Na2O and K2The sum of O accounts for the ratio >=14wt% of total composition.
Method the invention further relates to prepare described glass, comprises the following steps：
1) composition is weighed by proportioning, is well mixed, 5-10h is incubated at 1580-1680 DEG C；Melted；
2) glass metal that will be melted is cooled to 1150-1350 DEG C, is molded, and is made annealing treatment after shaping, you can
Obtain low iron, ultrawhite, the glass of superelevation aluminium.
Further, in the preparation process of glass, equipment or instrument avoid using iron-containing product.
The invention further relates to application of the described glass in touch screen cover plate glass.
The invention further relates to application of the described glass in military project or glass used for vehicle.
If the iron content in glass is high, due to Fe2+And Fe3+Can selectively be absorbed in visible region and make glass
Glass is coloured, and can influence glass quality.The glass that the present invention is provided, due to controlling its iron content, prepares low iron float glass, has
There is high transmittance, the technique effect of ultrawhite can be reached, in addition, the reasonable coordination for passing through other components, it can be ensured that glass
Mechanical performance, chemical stability, surface tension and viscosity etc. meet the requirements.
But, after reducing the iron content in glass, the diathermancy of glass increases, and heat absorptivity weakens, the list of production
Potential energy consumption will increase, and glass metal convection current weakens, and can increase the difficulty of its clarification, therefore, the present invention is reducing the same of iron content
Thing also needs to solve the problem of clarification, by SiO2, Al2O3, Na2O, K2O, MgO, ZrO and CeO2、Er2O3, CoO, Se carry out
Proportioning, obtains technical scheme, obtains the effect of real low iron, ultrawhite and superelevation aluminium.
Beneficial effects of the present invention are as follows：
The glass prepared by the formula in the present invention, has reached the purpose for improving thermal coefficient of expansion, while avoiding
Glass expansion coefficient is improved using the larger metal containing Ba, Sr of proportion, and the characteristics of the low iron of tool, super aluminium, high transmittance；
MgO can improve the hardness of glass, reduce high temperature viscosity, and the stability of glass, drop can also be improved while playing fluxing action
The recrystallization temperature of low glass, MgO can also improve the elastic modelling quantity of glass, be the main source of alkaline-earth metal.It is of the invention to match somebody with somebody
K is also reduced in side+Ion concentration.After experimental test, intensity and chemical-resistance etc. are superior to simple glass, especially chemistry
Enhanced time is short, and intensity is high, improves chemical enhanced efficiency.The present invention is using potassium nitrate fused solution as chemically enhancing glass
Liquid, compressive stress layer is formed by way of ion exchange in glass surface, reaches the purpose of reinforcing, and the strength ratio of strengthened glass is strong
5-10 times is improved before changing.
The glass that the present invention is provided has the features such as iron-holder is extremely low, transmitance is higher, tone is penetrating, can be made into 0.2-
The original sheet glass of 6mm, is widely used in the various flat panel display terminals such as panel computer, smart mobile phone, GPS.
Specific embodiment
With reference to specific embodiment, the present invention is furture elucidated.
A kind of low iron, ultrawhite, the glass of superelevation aluminium, including following components by weight：58-70 parts of SiO2, 15-23
Part Al2O3, 10-14 parts of Na2O, 1-6 part of K2O, 3-8 part of MgO, 0.5-2 parts of ZrO, 0.006-0.011 parts of Fe2O3, and CeO2、
Er2O3, CoO, Se it is each 0.0005-0.03 parts.
Further, the composition also includes 0.0005-0.03 parts of Nd2O3。
It is SiO that most compositions are introduced in glass ingredient in the present invention2,SiO2It is the required composition for constituting glass skeleton,
Its content is higher, can more improve the chemical resistance and mechanical strength of glass, on the other hand, due to putting forward high-viscosity tendency,
So SiO2Content is too high, increases the high temperature viscosity of glass, makes glass be difficult to melt.The present invention is closed by adjusting its content
Suitable is melt into temperature and liquidus temperature, is adapted to glass shaping.
Al2O3It is the neccessary composition for improving chemical durability of glass, split-phase can be suppressed, improves chemical enhanced characteristic.This hair
The Al of bright introducing 15-23%2O3, it is unobvious less than this range effect, significantly raised higher than this scope liquidus temperature, it is unfavorable for
Shaping obtains being adapted to shaping viscosity, it is necessary to adjust suitable content.With Al2O3Content increase will further improve vitrifying
The value of compressive stress and ion exchange depth after reinforcing are learned, with anti-drop and adhesion strength higher, as aluminium content is improved
The viscosity of glass will increase, and the bubble and striped that fusing is produced will increase, and the difficult homogenizing of glass, bubble are difficult to exclude and absorb,
Required glass melting temperature is also higher, while the combination that will adjust other raw materials, by glass melting temperature reduction, viscosity reduction, is beneficial to
The exclusion of the homogenizing and bubble of glass, preferably 15-18%.
Na2O is glass network modifier oxides, and sodium ion is occupy in the hole of glass structure network.Na2O is provided with dissociating
Oxygen increases glass structure O/i ratios, generation scission of link, thus can reduce the viscosity of glass, glass is easy to melting, is glass
Good flux.The Na during chemical tempering2O mainly can be in surface layer of glass with ion exchange K+ ions put
Change, glass is reached the purpose of reinforcing.Work as Na2O and Al2O3Mol ratio close to 1 when, chemical enhanced efficiency highest, after reinforcing
Strength of glass also highest；It is unfavorable to chemical enhanced process when ratio is more than or less than 1.
Potassium oxide K2O, is network modifying oxide, its effect and Na in glass2O is similar.The radius ratio sodium of potassium ion
Ion it is big, the viscosity ratio soda-lime glass of potash glass is big, can reduce the tendency towards devitrification of glass, increases the transparency and gloss of glass,
Potassium oxide often introduces senior ware glass, in optical glass and electronic glass, to introduce and can effectively reduce glass after potassium oxide
Surface tension, setting rate is slower, and opereating specification is more long, and the drawing in being conducive to glass to be molded is thin and long-pending thick.Introduce potassium oxide
Primary raw material has potassium carbonate and potassium nitrate.K2O mainly plays fluxing action, and introduces Na simultaneously2O and K2O, by mixed alkali effect,
Help to reduce viscosity and improve the meltbility of glass, if introducing excessive K2O, can hinder ion-exchange speed, so this
The K of 1-6% is chosen in invention2O, more preferably 3-5%.Control Na2O and K2The gross mass percentage of O is not less than 14%, by alkali
Metal can also effectively adjust the thermal coefficient of expansion of glass.
MgO alkaline-earth metal be mainly improve glass high-temperature physical property, can effectively control glass metal setting rate and
Crystallization property, while improving the meltdown property of glass, plays fluxing action.Setting rate is controlled in moulding process, to adapt to height
Rapid-result type demand, i.e. viscosity increasing within a short period of time are hardened；Control crystallization property, reduces the recrystallization temperature of glass, prevents glass
Glass liquid become crystal in cooling procedure and it is opaque or annealing when burst.But if above certain content, may prevent
Basic ion and movement in ion exchange process.Currently preferred scope 3-8%, can suppress crystallization.
ZrO2Phase transformation can improve the effect of toughness of material, it is demonstrated experimentally that in MgO-Al2O3-SiO2Add in electronic glass
Plus the toughness of electronic glass improves a lot after partially stabilized superfine powder zirconium oxide, the breakage rate of substrate has larger reduction.
CeO2It is the oxidation by means of decolorising agent as the oxide that appraises at the current rate for chemical decolorization agent, makes glass organic
The yellow that thing stains is eliminated, and the low oxide for making colorability strong is changed into the weaker ferric oxide of colorability
(Fe2O3Colorability is lower than FeO 10 times), further to neutralize color using physical decolorization method, close to colourless, make glass
The light transmittance of glass increases.CeO2Also can be as high temperature fining agent, pyrolytic goes out oxygen, and temperature is higher, and the oxygen isolated is more, clear
Clear effect is bigger.And the solubility with temperature of oxygen is raised and reduced, the minute bubbles of glass are expanded, liquid level is escaped, so as to produce
Clarification row's bubble effect, carries out following chemical reaction in glass fusion process：2CeO3+O2—4CeO2；2CeO2—CeO3+(O)↑。
Nd2O3With Er2O3, be physical decolorization agent, it present in glass pink and reddish violet, be the complementary color of yellow green,
Therefore turn into good physical decolorization agent, its advantage is to improve the transmitance and refractive index of glass, make the limpid bright, ultrawhite of glass
It is super.Being used alone can also use with non-rare earth essence composition.
If using CeO2、Nd2O3、Er2O3, CoO, Se as decolorising agent and colouring agent, its content is respectively controlled in 0.0005-
0.03%, coordinate melting furnace temperature and atmosphere adjustment.Se makes glass into the light green color complementation in shallow rose and glass, its meeting
Influenceed by melting furnace temperature and furnace atmosphere.CoO makes glass production blue, and the light yellow neutralization with glass, the decolouring of CoO is compared
Stabilization；
The main preparation process of glass sample is：Weigh-mixing-melting-stirring clarification-homogenizing-shaping-annealing-processing-property
Can test.
The method for preparing described glass, it is characterised in that comprise the following steps：
1) composition is weighed by proportioning, is well mixed, 5-10h is incubated at 1580-1680 DEG C；Melted；
2) glass metal that will be melted is cooled to 1150-1350 DEG C, is molded, and is made annealing treatment after shaping, you can
Obtain low iron, ultrawhite, the glass of superelevation aluminium.
Further, in the preparation process of glass, equipment or instrument avoid using iron-containing product.
In addition, using platinum-rhodium crucible when compound is melted, stirred using platinum rod in fusion process, gas is discharged in help
Steep and make glass metal clarification homogenizing.Glass sample to obtaining is processed, grinds, polishing, finally to the basic of glass
Physics and chemistry is tested.Physicochemical property test includes density, thermal coefficient of expansion, liquidus temperature, chemical tempering, optical property
Deng.
In preparation process, total system should drop iron, keep away iron, except iron, the measure of anti-iron.All steel storehouses, electronic scale, mixing
Machine, elephant trunk, transhipment bucket, receiver bin, forklift etc. all install super high molecular weight PE plates, so that total iron content control is existed
0.0006-0.0015%.
Obtained glass can extensively using with touch screen cover plate glass.Such as it is used for panel computer, smart mobile phone, GPS
Various flat panel display terminals.Also can be in the application in military project or glass used for vehicle.Such as automobile, motor-car, aircraft, the window of steamer
Family, photo-thermal field etc..
Several groups of embodiments presented below, side of the invention is further explained by specific with when the performance test results
Case, is specifically shown in Table 1.
Table 1
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and the feature in embodiment in the case where not conflicting, can mutually be combined.Protection model of the invention
Enclose the equivalent side of technical characteristic in the technical scheme that should be recorded with claim, including the technical scheme of claim record
Case is protection domain.Equivalent i.e. within this range is improved, also within protection scope of the present invention.
Claims (10)
1. a kind of low iron, ultrawhite, the glass of superelevation aluminium, it is characterised in that including following component by weight：58-70 parts
SiO2, 15-23 parts of Al2O3, 10-14 parts of Na2O, 1-6 part of K2O, 3-8 part of MgO, 0.5-2 parts of ZrO, 0.006-0.015 parts of Fe2O3,
And CeO2、Er2O3, CoO, Se it is each 0.0005-0.03 parts.
2. glass according to claim 1, it is characterised in that：The composition also includes 0.0005-0.03 parts of Nd2O3。
3. glass according to claim 1, it is characterised in that：Including following component by weight：60-70 parts of SiO2,
15-22 parts of Al2O3, 11-13 parts of Na2O, 4-6 part of K2O, 3-5 part of MgO, 0.5-2 parts of ZrO, 0.006-0.015 parts of Fe2O3, and
CeO2、Er2O3, CoO, Se it is each 0.0005-0.03 parts.
4. glass according to claim 1, it is characterised in that：In described composition, comprising 60-65 parts of SiO2, 15-16 parts
Al2O3, 11-13 parts of Na2O, 3-5 part of K2O, 3-5 part of MgO.
5. glass according to claim 1, it is characterised in that：Control Na2O and Al2O3Mol ratio be 0.9-1.
6. glass according to claim 1, it is characterised in that：Na2O and K2The sum of O accounts for the ratio >=14wt% of total composition.
7. the method for preparing the glass described in claim 1-6 any one, it is characterised in that comprise the following steps：
1）Composition is weighed by proportioning, is well mixed, 5-10h is incubated at 1580-1680 DEG C；Melted；
2）The glass metal that will be melted is cooled to 1150-1350 DEG C, is molded, and is made annealing treatment after shaping, you can obtain
Low iron, ultrawhite, the glass of superelevation aluminium.
8. method according to claim 7, it is characterised in that：In the preparation process of glass, equipment or instrument are avoided
Use iron-containing product.
9. application of the glass described in claim 1-6 any one in touch screen cover plate glass.
10. application of the glass described in claim 1-6 any one in military project or glass used for vehicle.
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| CN201710208341.1A CN106904830B (en) | 2017-03-31 | 2017-03-31 | A kind of low iron, ultrawhite, the glass and its preparation method and application of superelevation aluminium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759632A (en) * | 2019-09-09 | 2020-02-07 | 山东信和光热有限公司 | High-borosilicate glass formula with high transparency |
| CN112592053A (en) * | 2020-12-28 | 2021-04-02 | 四川中科玻璃有限公司 | Novel environment-friendly glass suitable for glass bottle and can production and preparation process thereof |
| CN113461305A (en) * | 2021-07-29 | 2021-10-01 | 中建材（濮阳）光电材料有限公司 | Production and processing equipment and processing method for ultra-white photo-thermal glass |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948488A (en) * | 2016-05-03 | 2016-09-21 | 东旭科技集团有限公司 | Glass for chemical strengthening, chemically strengthened glass, production method of glass for chemical strengthening, production method of chemically strengthened glass, production lass for display devices, and display device |
-
2017
- 2017-03-31 CN CN201710208341.1A patent/CN106904830B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948488A (en) * | 2016-05-03 | 2016-09-21 | 东旭科技集团有限公司 | Glass for chemical strengthening, chemically strengthened glass, production method of glass for chemical strengthening, production method of chemically strengthened glass, production lass for display devices, and display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759632A (en) * | 2019-09-09 | 2020-02-07 | 山东信和光热有限公司 | High-borosilicate glass formula with high transparency |
| CN112592053A (en) * | 2020-12-28 | 2021-04-02 | 四川中科玻璃有限公司 | Novel environment-friendly glass suitable for glass bottle and can production and preparation process thereof |
| CN113461305A (en) * | 2021-07-29 | 2021-10-01 | 中建材（濮阳）光电材料有限公司 | Production and processing equipment and processing method for ultra-white photo-thermal glass |
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| CN106904830B (en) | 2018-02-23 |
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Address after: 437000 Xianning city of Hubei Province, Xian'an District hi tech Zone two cross road No. Applicant after: Xianning CSG photoelectric glass Co. Ltd. Address before: 437000 Xianning city of Hubei Province, Xian'an District hi tech Zone two cross road No. Applicant before: Xianning South photoelectric glass Co. Ltd. |
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