CN107162408A - A kind of thin electronic glass of ultrawhite and its production method - Google Patents
A kind of thin electronic glass of ultrawhite and its production method Download PDFInfo
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- CN107162408A CN107162408A CN201710452386.3A CN201710452386A CN107162408A CN 107162408 A CN107162408 A CN 107162408A CN 201710452386 A CN201710452386 A CN 201710452386A CN 107162408 A CN107162408 A CN 107162408A
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- glass
- weight
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- ultrawhite
- thin electronic
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Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
Abstract
The invention discloses a kind of thin electronic glass of ultrawhite and its production method, it is made up of float glass technology, thickness is 1.5~3.2mm, it is seen that light transmission rate is 91.3~91.8%, bubble density is 0.1~0.32/m2, its raw material is made up of basic components, fining agent and decolorising agent；Basic components are made up of following component：SiO271.0~72.0 parts by weight, Na2O+K2The parts by weight of O 12~15, the parts by weight of CaO 8.5~10.5, the parts by weight of MgO 1.5~3, Al2O30.2~0.8 parts by weight and Fe2O30.01~0.015 parts by weight；Fining agent is CeO2And KNO3, KNO3Addition be Na2O+K211~15%, CeO of O total amounts2Addition based on component, KNO3With the 0.32~0.45% of decolorising agent gross weight；Decolorising agent is Co2O3, its addition is 0.000005~0.00004 parts by weight.The present invention controls the clarifying process of the thin electronic glass of ultrawhite by being combined with fining agent, viscosity of glass metal and melting process atmosphere three, and the bubble for reducing the thin electronic glass of ultrawhite is produced.
Description
Technical field
Field of glass production technology of the present invention, and in particular to a kind of thin electronic glass of ultrawhite and its production method.
Background technology
The development of electronics technology drives the demand increase of ultra-thin glass, drives the research of glass producer ultra-thin under high profit
The production technology of glass.In the prior art, can be used for producing ultra-thin glass has three kinds of methods, is respectively：Overflow down draw
Method；Float glass process and narrow slit glass tube down-drawing.Due to the huge market demand, external glass production giant is possible to be produced in enormous quantities
Float glass process ultra-thin glass production technology rest in hand, carry out technology blockage, implementation only sell product technology not for sale.China surpasses now
It is all to use import that thin glass is most of, causes product price high, while being difficult to break through the production technology to thin float glass.
The thin glass of ultrawhite is applied to well some sci-tech products, electronic product, high-grade car glass, the sun because of its light transmittance
The industries such as energy battery, precise electronic (duplicator, scanner).
Production ultrawhite thin glass in addition to capturing float technology problem, also when needing to research and produce ultra-clear glasses compared with common glass
Glass hardly possible clarification, because ultra-clear glasses are restricted containing ferrous components in itself, then has influence on the clarification of ultra-clear glasses, or even trigger glass
The reboiling phenomenon of glass liquid.Glass metal reboiling can then cause occur more bubbles in glass product, and below 3mm ultra-thin glass
Require more strict for bubble, so being attained a yet higher goal to the requirement of its glass metal clarification technique.As CN102219376A is disclosed
A kind of solar energy ultra-white ultra-thin glass preparation method and its product, it uses the calendering technology life different from float glass technology
Produce below 3.2mm product.CN103253849B disclose Ultrathin ultra clear float solar battery glass production process and its
Product, does not disclose the defecation method of its specific glass metal.CN102617018A discloses the manufacture method of float flat glass,
Only it is to disclose the control to ultra-thin glass flatness.
The content of the invention
It is an object of the invention to provide a kind of thin electronic glass of ultrawhite.
Another object of the present invention is to provide the production method of the thin electronic glass of above-mentioned ultrawhite.
Technical scheme is as follows：
A kind of thin electronic glass of ultrawhite, is made up of float glass technology, and thickness is 1.5~3.2mm, it is seen that light is saturating
It is 91.3~91.8% to cross rate, and bubble density is 0.1~0.32/m2, its raw material is by basic components, fining agent and decolorising agent group
Into；Basic components are made up of following component：SiO271.0~72.0 parts by weight, Na2O+K2The parts by weight of O 12~15, CaO 8.5
~10.5 parts by weight, the parts by weight of MgO 1.5~3, Al2O30.2~0.8 parts by weight and Fe2O30.01~0.015 parts by weight；It is clear
Clear agent is CeO2And KNO3, KNO3Addition be Na2O+K211~15%, CeO of O total amounts2Addition based on component,
KNO3With the 0.32~0.45% of decolorising agent gross weight；Decolorising agent is Co2O3, its addition is 0.000005~0.00004 weight
Part.
In a preferred embodiment of the invention, the total amount of the MgO and CaO are 9~13 parts by weight.
In a preferred embodiment of the invention, the Na2O、K2O and KNO3Total amount be 14.5~16 parts by weight.
A kind of production method of the thin electronic glass of above-mentioned ultrawhite, comprises the following steps：
(1) each raw material is weighed by weight, and each raw material is together then put into float glass smelting kiln fusing and clarified, and is controlled
The clarification viscosity and clarification atmosphere of glass metal processed, are made clear glass liquid so that the clear glass liquid enters the shellfish of molten tin bath 0 to 1 shellfish
1075~1078 DEG C of temperature, viscosity is 102~103Pa·S；
(2) it is molded in the clear glass liquid feeding molten tin bath obtained by step (1), the clear glass liquid is adopted when entering tin groove forming
It is 910~980 DEG C with high-temperature water bag, the shellfish of molten tin bath 2 to 6 shellfish electric heating controls adjustment forming temperature, while using 7 pairs of edge machines,
From first pair of edge machine to last to drawing side, outside point is produced by the speed difference and positive-angle of each pair edge machine
Power, speed difference is controlled in 15~50m/h, and linear velocity is incremental, the thin electronic glass of ultrawhite of thickness needed for being finally made；
In a preferred embodiment of the invention, the control of the clarification atmosphere in the melting furnaces in the step (1) is such as
Under：Moved towards according to float glass smelting kiln, be weak oxide atmosphere, waste gas O before focus2Flame control is at content 1~2%, focus
Weak reducing atmosphere, waste gas CO contents are 0.1~2%, to foot couple port are weak oxide atmosphere, waste gas O after focus2Content 1
~2%.
In a preferred embodiment of the invention, the glass metal liquid in the float glass smelting kiln in the step (1)
The height in face is not more than 0.8m.
1. in a preferred embodiment of the invention, during clarification in the step (1), card neck water bag is placed in glass
At the 1/2~1/3 of liquid, there is reboiling phenomenon to avoid glass metal sub-cooled.
Beneficial effects of the present invention：
1st, the present invention is thin by being combined control ultrawhite with fining agent, viscosity of glass metal and melting process atmosphere three
The clarifying process of electronic glass, the bubble for reducing the thin electronic glass of ultrawhite is produced.
2nd, the present invention passes through the control climates of melting furnaces, it is to avoid the coloured ion in glass batch carries out secondary to glass
Color then produce it is variegated, by being combined control with decolorising agent in batch so that glass turn into light transmittance be more than 91% ultrawhite
Glass product.
3rd, the thin electronic glass of ultrawhite of the invention reduces the viscous of glass metal when glass metal is clarified using the CaO of certain content
Degree, abundant fining glass liquid；Can be by increasing the viscosity of glass metal during shaping.
4th, the present invention is by increasing Na2O and K2O content and the content of reduction aluminum oxide reduce the viscosity of glass metal, favorably
In the abundant clarification of glass metal.
5th, influence of the present invention by the component of the thin electronic glass of ultrawhite to viscosity of glass metal, the thin electronics of designed ultrawhite
Glass ingredient causes glass metal viscosity effect with optimal balance when clarification is with shaping.
6th, production method of the invention uses suitable glass metal liquid level design to accelerate microbubble in glass metal
Clarification.
7th, production method of the invention is under the conditions of the temperature and viscosity of glass metal of the shellfish of molten tin bath 0 to 1 shellfish, can allow glass metal
More quickly shakeout under gravity traction, while increasing the percent ripple generation that its thinning effect reduces glass plate.
Embodiment
Technical scheme is further detailed and described below by way of embodiment.
Embodiment 1
The thin electronic glass of ultrawhite that nominal thickness is 1.5mm is produced, according to the production work of the described thin electronic glass of ultrawhite
Skill is implemented as follows.
The raw material of the thin electronic glass of ultrawhite is by the thin electronic glass basic components of ultrawhite, clarifier component and decolorising agent component
Composition.Wherein basic components such as table 1 below：
Table 1 (parts by weight)
| SiO2 | Na2O+K2O | KNO3 | CaO | MgO | Al2O3 | Fe2O3 | Co2O3 |
| 72 | 14 | 1.554 | 10.5 | 1.5 | 0.444995 | 0.001 | 0.000005 |
In above-mentioned raw materials, MgO is with CaO overall controls in 12 parts by weight；Na2O+K2O+KNO3Overall control is in 15.554 weights
Measure part.KNO3As fining agent, the deal used is Na2O+K2The 11.1% of O total weight parts.Match somebody with somebody according to the glass of said components
Close material quality 0.32% adds CeO2, with KNO3Put into melting furnaces control clarification viscosity together with glass batch as fining agent
With clarification atmosphere, it is ensured that the abundant clarification of glass metal.
Carry out drawing thin shaping to obtain the thin electricity of ultrawhite by fusing clarification control in the thin electronic glass component feeding melting furnaces of ultrawhite
Sub- glass.Batch enters melting furnaces, is by the control climate of melting furnaces：Moved towards according to float glass smelting kiln, be weak oxide before focus
Atmosphere, waste gas O2Flame control is weak reducing atmosphere at content 1%, focus, and waste gas CO contents are 0.1%, to end after focus
It is weak oxide atmosphere, waste gas O to port2Content 1%.
When producing super-thin electronic glass, by glass metal liquid surface height controlling in 0.8m or lower；When glass metal is clarified
Card neck water bag is placed at the 1/2 of glass metal, it is to avoid glass metal sub-cooled and there is reboiling phenomenon.
The glass metal that the thin electronic glass component of ultrawhite is obtained after clarification enter the shellfish of molten tin bath 0 to 1 shellfish temperature 1075~
1078 DEG C, its viscosity is 102~103Pa·S。
Glass metal enter tin groove forming when use high-temperature water bag, the shellfish of molten tin bath 2 to 6 shellfish electric heating controls adjustment forming temperature for
910~980 DEG C, while using 7 pairs of edge machines, from first pair of edge machine to last to drawing side, by each pair edge machine
Speed difference and positive-angle produce outside component, speed difference control 50m/h, linear velocity is incremental.
Obtaining the thin electronic glass 1 of ultrawhite that nominal thickness is 1.5mm by above-mentioned steps has optics as shown in table 4 below
Feature.
Embodiment 2
The thin electronic glass of ultrawhite that nominal thickness is 2.8mm is produced, according to the production work of the described thin electronic glass of ultrawhite
Skill is implemented as follows.
The raw material of the thin electronic glass of ultrawhite is by the thin electronic glass basic components of ultrawhite, clarifier component and decolorising agent component
Composition.Wherein basic components such as table 2 below：
Table 2 (parts by weight)
| SiO2 | Na2O+K2O | KNO3 | CaO | MgO | Al2O3 | Fe2O3 | Co2O3 |
| 72 | 14 | 1.96 | 8.5 | 3 | 0.538496 | 0.0015 | 0.000004 |
In above-mentioned raw materials, MgO is with CaO overall controls in 11.5 parts by weight；Na2O+K2O+KNO3Overall control is in 15.96 weights
Measure part.KNO3As fining agent, the deal used is Na2O+K2The 14% of O total weight parts.According to the glass batch of said components
Expect that the 0.4% of quality adds CeO2, with KNO3Put into together with glass batch as fining agent melting furnaces control clarification viscosity with it is clear
Clear atmosphere, it is ensured that the abundant clarification of glass metal.
Carry out drawing thin shaping to obtain the thin electricity of ultrawhite by fusing clarification control in the thin electronic glass component feeding melting furnaces of ultrawhite
Sub- glass.Batch enters melting furnaces, is by the control climate of melting furnaces：Moved towards according to float glass smelting kiln, be weak oxide before focus
Atmosphere, waste gas O2Flame control is weak reducing atmosphere at content 1.3%, focus, and waste gas CO contents are 1%, to end after focus
It is weak oxide atmosphere, waste gas O to port2Content 1.5%.
When producing super-thin electronic glass, by glass metal liquid surface height controlling in 0.8m or lower；When glass metal is clarified
Card neck water bag is placed at the 1/3 of glass metal, it is to avoid glass metal sub-cooled and there is reboiling phenomenon.
The glass metal that the thin electronic glass component of ultrawhite is obtained after clarification enter the shellfish of molten tin bath 0 to 1 shellfish temperature 1075~
1078 DEG C, its viscosity is 102~103Pa·S。
Glass metal enter tin groove forming when use high-temperature water bag, the shellfish of molten tin bath 2 to 6 shellfish electric heating controls adjustment forming temperature for
910~980 DEG C, while using 7 pairs of edge machines, from first pair of edge machine to last to drawing side, by each pair edge machine
Speed difference and positive-angle produce outside component, speed difference control 25m/h, linear velocity is incremental.
Obtaining the thin electronic glass 5 of ultrawhite that nominal thickness is 2.8mm by above-mentioned steps has optics as shown in table 4 below
Feature.
Embodiment 3
The thin electronic glass of ultrawhite that nominal thickness is 3.2mm is produced, according to the production work of the described thin electronic glass of ultrawhite
Skill is implemented as follows.
The raw material of the thin electronic glass of ultrawhite is by the thin electronic glass basic components of ultrawhite, clarifier component and decolorising agent component
Composition.Wherein basic components such as table 3 below：
Table 3 (parts by weight)
| SiO2 | Na2O+K2O | KNO3 | CaO | MgO | Al2O3 | Fe2O3 | Co2O3 |
| 71.5 | 13 | 1.95 | 10 | 3 | 0.548495 | 0.0015 | 0.000005 |
In above-mentioned raw materials, MgO is with CaO overall controls in 13 parts by weight；Na2O+K2O+KNO3Overall control is in 14.95 weight
Part.KNO3As fining agent, the deal used is Na2O+K2The 15% of O total weight parts.According to the glass batch of said components
The 0.45% of quality adds CeO2, with KNO3Put into together with glass batch as fining agent melting furnaces control clarification viscosity with it is clear
Clear atmosphere, it is ensured that the abundant clarification of glass metal.
Carry out drawing thin shaping to obtain the thin electricity of ultrawhite by fusing clarification control in the thin electronic glass component feeding melting furnaces of ultrawhite
Sub- glass.Batch enters melting furnaces, is by the control climate of melting furnaces：Moved towards according to float glass smelting kiln, be weak oxide before focus
Atmosphere, waste gas O2Flame control is weak reducing atmosphere at content 2%, focus, and waste gas CO contents are 2%, to foot couple after focus
Port is weak oxide atmosphere, waste gas O2Content 2%.
When producing super-thin electronic glass, by glass metal liquid surface height controlling in 0.8m or lower；When glass metal is clarified
Card neck water bag is placed at the 1/3 of glass metal, it is to avoid glass metal sub-cooled and there is reboiling phenomenon.
The glass metal that the thin electronic glass component of ultrawhite is obtained after clarification enter the shellfish of molten tin bath 0 to 1 shellfish temperature 1075~
1078 DEG C, its viscosity is 102~103Pa·S。
Glass metal enter tin groove forming when use high-temperature water bag, the shellfish of molten tin bath 2 to 6 shellfish electric heating controls adjustment forming temperature for
910~980 DEG C, while using 7 pairs of edge machines, from first pair of edge machine to last to drawing side, by each pair edge machine
Speed difference and positive-angle produce outside component, speed difference control 15m/h, linear velocity is incremental.
Obtaining the thin electronic glass 8 of ultrawhite that nominal thickness is 3.2mm by above-mentioned steps has optics as shown in table 4 below
Feature.
The Product checking data of the super-thin electronic glass of the present invention of table 4
In table 4, the thin electronic glass 1,5 and 8 of ultrawhite is product made from embodiment 1,2 and 3 respectively, other thin electricity of ultrawhite
Sub- glass is to carry out reasonable data Adjustment Tests according to the inventive method in the present invention to obtain, and from the data of table 4, is passed through
The production method of the present invention can obtain the thin electronic glass of qualified ultrawhite, and different batches glass product have it is metastable
Thickness difference and to piece gap detection parameter.
The foregoing is only a preferred embodiment of the present invention, therefore can not limit the scope that the present invention is implemented according to this, i.e.,
The equivalent changes and modifications made according to the scope of the claims of the present invention and description, all should still belong in the range of the present invention covers.
Claims (7)
1. a kind of thin electronic glass of ultrawhite, it is characterised in that：Be made up of float glass technology, thickness be 1.5~
3.2mm, it is seen that light transmission rate is 91.3~91.8%, bubble density is 0.1~0.32/m2, its raw material is by basic components, clear
Clear agent and decolorising agent composition；Basic components are made up of following component：SiO271.0~72.0 parts by weight, Na2O+K2O 12~15
Parts by weight, the parts by weight of CaO 8.5~10.5, the parts by weight of MgO 1.5~3, Al2O30.2~0.8 parts by weight and Fe2O30.01~
0.015 parts by weight；Fining agent is CeO2And KNO3, KNO3Addition be Na2O+K211~15%, CeO of O total amounts2Addition
Component, KNO based on amount3With the 0.32~0.45% of decolorising agent gross weight；Decolorising agent is Co2O3, its addition is 0.000005
~0.00004 parts by weight.
2. a kind of thin electronic glass of ultrawhite as claimed in claim 1, it is characterised in that：The total amount of the MgO and CaO be 9~
13 parts by weight.
3. a kind of thin electronic glass of ultrawhite as claimed in claim 1, it is characterised in that：The Na2O、K2O and KNO3Total amount
For 14.5~16 parts by weight.
4. a kind of production method of the thin electronic glass of ultrawhite in claims 1 to 3 described in any claim, its feature exists
In：Comprise the following steps：
(1) each raw material is weighed by weight, and each raw material is together then put into float glass smelting kiln fusing and clarified, and controls glass
The clarification viscosity and clarification atmosphere of glass liquid, are made clear glass liquid so that the clear glass liquid enters the shellfish of molten tin bath 0 to the temperature of 1 shellfish
1075~1078 DEG C of degree, viscosity is 102~103Pa·S；
(2) it is molded in the clear glass liquid feeding molten tin bath obtained by step (1), the clear glass liquid uses height when entering tin groove forming
Warm water bag, the shellfish of molten tin bath 2 to 6 shellfish electric heating controls adjustment forming temperature are 910~980 DEG C, while using 7 pairs of edge machines, from the
A pair of edge machines are to last between drawing side, outside component, speed are produced by the speed difference and positive-angle of each pair edge machine
Difference control is in 15~50m/h, and linear velocity is incremental, the thin electronic glass of ultrawhite of thickness needed for being finally made.
5. production method as claimed in claim 4, it is characterised in that：The clarification atmosphere in melting furnaces in the step (1)
Control is as follows：Moved towards according to float glass smelting kiln, be weak oxide atmosphere, waste gas O before focus2Flame at content 1~2%, focus
Control as weak reducing atmosphere, it after 0.1~2%, focus to foot couple port is weak oxide atmosphere, waste gas O that waste gas CO contents, which are,2
Content 1~2%.
6. production method as claimed in claim 4, it is characterised in that：The glass in float glass smelting kiln in the step (1)
The height of glass liquid liquid level is not more than 0.8m.
7. production method as claimed in claim 4, it is characterised in that：During clarification in the step (1), card neck water bag is placed in
At the 1/2~1/3 of glass metal, there is reboiling phenomenon to avoid glass metal sub-cooled.
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| CN111333317A (en) * | 2020-03-06 | 2020-06-26 | 安徽科技学院 | High-potassium ultra-white glass and preparation method thereof |
| CN113461326A (en) * | 2021-07-27 | 2021-10-01 | 漳州旗滨光伏新能源科技有限公司 | High-light-transmittance solar float glass and preparation method thereof |
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