CN107162408B - 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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- CN107162408B CN107162408B CN201710452386.3A CN201710452386A CN107162408B CN 107162408 B CN107162408 B CN 107162408B CN 201710452386 A CN201710452386 A CN 201710452386A CN 107162408 B CN107162408 B CN 107162408B
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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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- 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
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Abstract
The invention discloses a kind of thin electronic glass of ultrawhite and its production methods, are made up of float glass technolog, with a thickness of 1.5~3.2mm, it is seen that light transmission rate is 91.3~91.8%, and bubble density is 0.1~0.32/m2, raw material is made of basic components, clarifying agent and decolorising agent；Basic components are grouped as by following group: SiO271.0~72.0 parts by weight, Na2O+K212~15 parts by weight of O, 8.5~10.5 parts by weight of CaO, 1.5~3 parts by weight of MgO, Al2O30.2~0.8 parts by weight and Fe2O30.01~0.015 parts by weight；Clarifying agent is CeO2And KNO3, KNO3Additional amount be Na2O+K211~15%, CeO of O total amount2Additional amount be basic component, KNO3With the 0.32~0.45% of decolorising agent total weight；Decolorising agent is Co2O3, additional amount is 0.000005~0.00004 parts by weight.The present invention controls the clarifying process of the thin electronic glass of ultrawhite by combining with clarifying agent, viscosity of glass metal and melting process atmosphere three, and the bubble for reducing the thin electronic glass of ultrawhite generates.
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 technique
The development of electronics technology drives the demand of ultra-thin glass to increase, and drives the research of glass producer ultra-thin under high profit
The production technology of glass.In the prior art, can be used to produce ultra-thin glass there are three types of method, be 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 will produce in enormous quantities
Float glass process ultra-thin glass production technology grasp in the hand, carry out technology blockage, implementation only sell product technology not for sale.China surpasses now
Most of thin glass is all it is high to lead to product price, while being difficult to break through the production technology to thin float glass using import.
Ultrawhite thin glass 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).
Ultrawhite thin glass is produced other than capturing float technology problem, compared with common glass when also needing to research and produce ultra-clear glasses
The clarification of glass difficulty then influences the clarification of ultra-clear glasses, or even cause glass since ultra-clear glasses itself are restricted containing ferrous components
The reboiling phenomenon of glass liquid.Glass metal reboiling can then make occur more bubbles in glass product, and 3mm ultra-thin glass below
It is more stringent for bubble requirement, so requiring to attain a yet higher goal to its glass metal clarification technique.As CN102219376A is disclosed
A kind of solar energy ultra-white ultra-thin glass preparation method and its product, use the calendering technology different from float glass technology raw
Produce 3.2mm product below.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 manufacturing method of float flat glass,
It is only the control disclosed to ultra-thin glass flatness.
Summary of the invention
The purpose of the present invention is to provide a kind of thin electronic glasses of ultrawhite.
Another object of the present invention is to provide the production methods 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, with a thickness of 1.5~3.2mm, it is seen that light is saturating of float glass technolog
Crossing rate is 91.3~91.8%, and bubble density is 0.1~0.32/m2, raw material is by basic components, clarifying agent and decolorising agent group
At；Basic components are grouped as by following group: SiO271.0~72.0 parts by weight, Na2O+K212~15 parts by weight of O, CaO 8.5
~10.5 parts by weight, 1.5~3 parts by weight of MgO, Al2O30.2~0.8 parts by weight and Fe2O30.01~0.015 parts by weight；It is clear
Clear agent is CeO2And KNO3, KNO3Additional amount be Na2O+K211~15%, CeO of O total amount2Additional amount be basic component,
KNO3With the 0.32~0.45% of decolorising agent total weight；Decolorising agent is Co2O3, additional amount is 0.000005~0.00004 weight
Part.
In a preferred embodiment of the invention, the total amount of the MgO and CaO is 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, includes the following steps:
(1) each raw material is weighed by weight, each raw material is then put into float glass smelting kiln fusing and clarification together, and control
The clarification viscosity and clarification atmosphere of glass metal processed, are made transparent glass liquid, so that the transparent glass liquid enters 0 shellfish of molten tin bath to 1 shellfish
1075~1078 DEG C of temperature, viscosity 102~103Pa·S；
(2) the resulting transparent glass liquid of step (1), which is sent into molten tin bath, forms, which adopts when entering tin groove forming
It is 910~980 DEG C, while is used 7 pairs of edge machines with high-temperature water packet, 2 shellfish of molten tin bath to 6 shellfish electric heating controls adjustment forming temperature,
It is drawn between side from first pair of edge machine is a pair of to the end, outside point is generated by the speed difference and positive-angle of each pair of edge machine
Power, speed difference control are incremented by 15~50m/h, linear velocity, and the thin electronic glass of ultrawhite of required thickness is 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: it is moved towards according to float glass smelting kiln, is weak oxide atmosphere, exhaust gas O before hot spot2Content 1~2%, at hot spot flame control be
Weak reducing atmosphere, exhaust gas CO content are 0.1~2%, to foot couple port are weak oxide atmosphere, exhaust gas O after hot spot2Content 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. card neck water packet is placed in glass in a preferred embodiment of the invention, when clarification in the step (1)
At the 1/2~1/3 of liquid, there is reboiling phenomenon to avoid glass metal sub-cooled.
Beneficial effects of the present invention:
1, the present invention is thin by combining control ultrawhite with clarifying 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 generate.
2, the present invention avoids the coloured ion in glass batch secondary to glass progress by the control climate of melting furnaces
Color then generate it is variegated, by conjunction with decolorising agent in batch control so that glass become light transmittance be greater than 91% ultrawhite
Glass product.
3, 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；The viscosity of increase glass metal can be passed through when molding.
4, the present invention is by increasing Na2O and K2The content of O and the content for reducing aluminium oxide reduce the viscosity of glass metal, favorably
In the abundant clarification of glass metal.
5, 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 makes glass metal viscosity effect with optimal balance when clarification is with forming.
6, production method of the invention uses suitable glass metal liquid level design to accelerate microbubble in glass metal
Clarification.
7, production method of the invention is under the conditions of the temperature and viscosity of glass metal of 0 shellfish of molten tin bath to 1 shellfish, can allow glass metal
It is more quickly shakeout under gravity traction, while increasing the percent ripple generation that its thinning effect reduces glass plate.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment.
Embodiment 1
The thin electronic glass of ultrawhite that nominal thickness is 1.5mm is produced, according to the production work of the 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 the following table 1:
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 and CaO overall control are in 12 parts by weight；Na2O+K2O+KNO3Overall control is in 15.554 weights
Measure part.KNO3As clarifying agent, the deal used is Na2O+K2The 11.1% of O total weight parts.Match according to the glass of said components
CeO is added in close material quality 0.32%2, with KNO3Put into melting furnaces control clarification viscosity together with glass batch as clarifying agent
With clarification atmosphere, guarantee the abundant clarification of glass metal.
The thin electronic glass group of ultrawhite, which is distributed into melting furnaces, by fusing clarification control to be carried out that thin molding is drawn to obtain the thin electricity of ultrawhite
Sub- glass.Batch enters melting furnaces, by the control climate of melting furnaces are as follows: moves towards according to float glass smelting kiln, is weak oxide before hot spot
Atmosphere, exhaust gas O2Content 1%, flame control is weak reducing atmosphere at hot spot, and exhaust gas CO content is 0.1%, to end after hot spot
It is weak oxide atmosphere, exhaust 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 packet is placed at the 1/2 of glass metal, avoids glass metal sub-cooled and reboiling phenomenon occurs.
The thin electronic glass component of ultrawhite obtained glass metal after clarification enter 0 shellfish of molten tin bath to 1 shellfish temperature 1075~
1078 DEG C, viscosity 102~103Pa·S。
Glass metal used when entering tin groove forming high-temperature water packet, 2 shellfish of molten tin bath to 6 shellfish electric heating controls adjust forming temperature for
910~980 DEG C, while 7 pairs of edge machines are used, it is drawn between side from first pair of edge machine is a pair of to the end, by each pair of edge machine
Speed difference and positive-angle generate outside component, speed difference controls 50m/h, and linear velocity is incremented by.
Obtaining the thin electronic glass 1 of ultrawhite that nominal thickness is 1.5mm through the above 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 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 the following table 2:
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 and CaO overall control are in 11.5 parts by weight；Na2O+K2O+KNO3Overall control is in 15.96 weights
Measure part.KNO3As clarifying 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 is added CeO2, with KNO3Put into together as clarifying agent with glass batch melting furnaces control clarification viscosity with it is clear
Clean air atmosphere guarantees the abundant clarification of glass metal.
The thin electronic glass group of ultrawhite, which is distributed into melting furnaces, by fusing clarification control to be carried out that thin molding is drawn to obtain the thin electricity of ultrawhite
Sub- glass.Batch enters melting furnaces, by the control climate of melting furnaces are as follows: moves towards according to float glass smelting kiln, is weak oxide before hot spot
Atmosphere, exhaust gas O2Content 1.3%, flame control is weak reducing atmosphere at hot spot, and exhaust gas CO content is 1%, to end after hot spot
It is weak oxide atmosphere, exhaust 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 packet is placed at the 1/3 of glass metal, avoids glass metal sub-cooled and reboiling phenomenon occurs.
The thin electronic glass component of ultrawhite obtained glass metal after clarification enter 0 shellfish of molten tin bath to 1 shellfish temperature 1075~
1078 DEG C, viscosity 102~103Pa·S。
Glass metal used when entering tin groove forming high-temperature water packet, 2 shellfish of molten tin bath to 6 shellfish electric heating controls adjust forming temperature for
910~980 DEG C, while 7 pairs of edge machines are used, it is drawn between side from first pair of edge machine is a pair of to the end, by each pair of edge machine
Speed difference and positive-angle generate outside component, speed difference controls 25m/h, and linear velocity is incremented by.
Obtaining the thin electronic glass 5 of ultrawhite that nominal thickness is 2.8mm through the above 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 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 the following table 3:
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 and CaO overall control are in 13 parts by weight；Na2O+K2O+KNO3Overall control is in 14.95 weight
Part.KNO3As clarifying agent, the deal used is Na2O+K2The 15% of O total weight parts.According to the glass batch of said components
CeO is added in the 0.45% of quality2, with KNO3Put into together as clarifying agent with glass batch melting furnaces control clarification viscosity with it is clear
Clean air atmosphere guarantees the abundant clarification of glass metal.
The thin electronic glass group of ultrawhite, which is distributed into melting furnaces, by fusing clarification control to be carried out that thin molding is drawn to obtain the thin electricity of ultrawhite
Sub- glass.Batch enters melting furnaces, by the control climate of melting furnaces are as follows: moves towards according to float glass smelting kiln, is weak oxide before hot spot
Atmosphere, exhaust gas O2Content 2%, flame control is weak reducing atmosphere at hot spot, and exhaust gas CO content is 2%, to foot couple after hot spot
Port is weak oxide atmosphere, exhaust 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 packet is placed at the 1/3 of glass metal, avoids glass metal sub-cooled and reboiling phenomenon occurs.
The thin electronic glass component of ultrawhite obtained glass metal after clarification enter 0 shellfish of molten tin bath to 1 shellfish temperature 1075~
1078 DEG C, viscosity 102~103Pa·S。
Glass metal used when entering tin groove forming high-temperature water packet, 2 shellfish of molten tin bath to 6 shellfish electric heating controls adjust forming temperature for
910~980 DEG C, while 7 pairs of edge machines are used, it is drawn between side from first pair of edge machine is a pair of to the end, by each pair of edge machine
Speed difference and positive-angle generate outside component, speed difference controls 15m/h, and linear velocity is incremented by.
Obtaining the thin electronic glass 8 of ultrawhite that nominal thickness is 3.2mm through the above steps has optics as shown in table 4 below
Feature.
The product testing 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, by the data of table 4 it is found that passing through
The qualified thin electronic glass of ultrawhite can be obtained in production method of the invention, and the glass product of different batches is with metastable
Thickness difference and to piece gap detection parameters.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (6)
1. a kind of thin electronic glass of ultrawhite, it is characterised in that: it is made up of float glass technolog, with a thickness of 1.5 ~ 3.2mm,
Visible light transmittance is 91.3 ~ 91.8%, and bubble density is 0.1 ~ 0.32/m2, raw material is by basic components, clarifying agent and takes off
Toner composition；Basic components are grouped as by following group: SiO2 71.0 ~ 72.0 parts by weight, Na2O+K212 ~ 15 parts by weight of O,
8.5 ~ 10.5 parts by weight of CaO, 1.5 ~ 3 parts by weight of MgO, Al2O3 0.2 ~ 0.8 parts by weight and Fe2O3 0.01 ~ 0.015 weight
Measure part；Clarifying agent is CeO2And KNO3, KNO3Additional amount be Na2O+K211 ~ 15%, CeO of O total amount2Additional amount based on group
Divide, KNO3With the 0.32 ~ 0.45% of decolorising agent total weight；Decolorising agent is Co2O3, additional amount is 0.000005 ~ 0.00004 weight
Part；
In above-mentioned float glass technolog, transparent glass liquid enters 0 shellfish of molten tin bath to 1075 ~ 1078 DEG C of temperature of 1 shellfish, and viscosity is
102~103The control of PaS, the clarification atmosphere in melting furnaces are as follows: moving towards according to float glass smelting kiln, be weak oxide gas before hot spot
Atmosphere, exhaust gas O2Content 1 ~ 2%, flame control is weak reducing atmosphere at hot spot, and exhaust gas CO content is 0.1 ~ 2%, to end after hot spot
It is weak oxide atmosphere, exhaust gas O to port2Content 1 ~ 2%.
2. a kind of thin electronic glass of ultrawhite as described in claim 1, it is characterised in that: the total amount of the MgO and CaO is 11.5
~ 13 parts by weight.
3. a kind of thin electronic glass of ultrawhite as described in claim 1, it is characterised in that: the Na2O、K2O and KNO3Total amount
For 14.5 ~ 16 parts by weight.
4. the production method of the thin electronic glass of ultrawhite described in any claim, feature exist in a kind of claims 1 to 3
In: include the following steps:
(1) each raw material is weighed by weight, each raw material is then put into float glass smelting kiln fusing and clarification together, and control glass
The clarification viscosity and clarification atmosphere of glass liquid, are made transparent glass liquid, so that the transparent glass liquid enters the temperature of 0 shellfish of molten tin bath to 1 shellfish
1075 ~ 1078 DEG C of degree, viscosity 102~103Pa·S；
(2) the resulting transparent glass liquid of step (1), which is sent into molten tin bath, forms, using height when which enters tin groove forming
Warm water packet, 2 shellfish of molten tin bath to 6 shellfish electric heating controls adjustment forming temperature are 910 ~ 980 DEG C, while using 7 pairs of edge machines, from first
It is a pair of to the end to edge machine to draw between side, outside component, speed difference are generated by the speed difference and positive-angle of each pair of edge machine
Control is incremented by 15 ~ 50m/h, linear velocity, and the thin electronic glass of ultrawhite of required thickness is finally made.
5. 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.
6. production method as claimed in claim 4, it is characterised in that: when clarification in the step (1), card neck water packet 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 |
| CN113461326B (en) * | 2021-07-27 | 2022-05-10 | 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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Effective date of registration: 20210526 Address after: 363000 Embankment Road of Kangmei Town, Dongshan County, Zhangzhou City, Fujian Province Patentee after: Zhangzhou Qibin photovoltaic New Energy Technology Co.,Ltd. Address before: 363000 Embankment Road of Kangmei Town, Dongshan County, Zhangzhou City, Fujian Province Patentee before: ZHANGZHOU KIBING GLASS Co.,Ltd. Patentee before: ZHUZHOU LILING KIBING GLASS Co.,Ltd. Patentee before: CHANGXING KIBING GLASS Co.,Ltd. |