CN107445471A - A kind of float process leaded light glass sheet compound clarifier - Google Patents
A kind of float process leaded light glass sheet compound clarifier Download PDFInfo
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- CN107445471A CN107445471A CN201710669049.XA CN201710669049A CN107445471A CN 107445471 A CN107445471 A CN 107445471A CN 201710669049 A CN201710669049 A CN 201710669049A CN 107445471 A CN107445471 A CN 107445471A
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- glass sheet
- leaded light
- compound clarifier
- glass
- float
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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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/004—Refining agents
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention belongs to float glass manufacturing technology field, and in particular to a kind of float process leaded light glass sheet compound clarifier.A kind of float process leaded light glass sheet proposed compound clarifier is used for floating process and produces guide-lighting glass sheet；The amount that compound clarifier is added in per 100g leaded light glass sheets is 2.5 6g；The raw material of the compound clarifier forms and percentage by weight is：Diluent 45 80%, sulfate 0.4 1%, nitrate 21 47%, cerium oxide 1 3%.Provided by the present invention is a kind of compound clarifier, there is preferably clarification decolorizing effect than single fining agent, float glass technology can be preferably used for and with this technique productions leaded light glass sheet, solve the problems, such as that bubble is difficult to eliminate in float process light guide plate glass process.
Description
Technical field
The invention belongs to float glass manufacturing technology field, and in particular to a kind of float process leaded light glass sheet is with compound clear
Clear agent.
Background technology
Guide-lighting glass sheet is a kind of revolutionary optical material, can not only be applied to field of television, is also had an opportunity wide
It is general to be applied to other aspects;Guide-lighting glass sheet requirement possesses the performances such as high light transmission rate, high index of refraction, high-fire resistance, simultaneously
Ask and possess preferable mechanical performance, this just proposes tightened up requirement to glass quality.
It is general to reach glass metal using the method for adding glass fining agent in glass production in order to reach above-mentioned requirements
To the effect of clarification；Glass fining agent is auxiliary material important in glass production, situation of the most fining agent in high temperature
It is lower itself to vaporize or decompose to give off gas, the partial pressure in glass metal is more than the gas point in poised state in minute bubbles
Pressure, so that the balance between kiln gas, glass metal and minute bubbles three is broken so that minute bubbles become air and run so as to be arranged
Go out glass metal, reach the effect of clarification.
Conventional float glass uses sulphur carbon fining agent more, i.e., adds carbon dust to clarify glass metal with saltcake, usual saltcake
Dosage is 1% or so of batch.SO is produced after saltcake pyrolytic2, SO2Into in glass metal, in 1200 DEG C of high temperature above SO2
Released as bubble, play a part of clarification, but the SO remained2Solubility in glass metal is very low, it is more difficult to is inhaled by glass metal
Receive, SO is generated when the oxygen reaction with periphery3, SO3Solubility is larger in glass metal is easily absorbed by glass.And SO3In glass
The iron content of solubility and glass in liquid has correlation, can be reduced with the reduction of iron content.For guide-lighting glass sheet
Speech, because its iron-holder is very low, about 60ppm, according to traditional sulphur carbon fining agent, it is necessary to the usage amount of saltcake is reduced, it is otherwise residual
The SO stayed in glass metal3It can not be fully absorbed by glass metal, be unfavorable for the clarification of glass metal on the contrary.But when saltcake dosage is very low
When, fluxing effect cannot be played to glass metal, the addition of carbon dust can also bring big influence to the iron-holder in glass;Cause
This sulphur carbon fining agent and non-optimal selection for the guide-lighting glass sheet of micro- iron content.
In the production of glass, when using sodium pyroantimonate as fining agent, sodium pyroantimonate decomposes to give off oxygen in high temperature,
Enter in the bubble in glass metal, reduce the partial pressure in bubble, be allowed to continue to absorb gas, volume increase and from glass metal
Middle exclusion, clarifying effect are preferable；But some is understood when using sodium pyroantimonate as fining agent in the form of the oxide of antimony
Remain in vitreum, the protective gas N of reproducibility can be passed through in molten tin bath in the production process of float glass2+H2, with Jiao
When sodium antimonate passes through molten tin bath as the glass metal of fining agent, in the reducing atmosphere of molten tin bath, the oxide of antimony can be reduced into
For the antimony that dissociates, separated out in glass pane surface, have a strong impact on glass quality；Therefore the fining agent is not suitable for floating process.
The content of the invention
In order to solve the above technical problems, the purpose of the present invention is to propose to a kind of float process leaded light glass sheet composite clarification
Agent.
The present invention adopts the following technical scheme that to complete above-mentioned purpose：
A kind of float process leaded light glass sheet compound clarifier, the compound clarifier are used for floating process production light guide plate glass
Glass；The amount that compound clarifier is added in per 100g leaded light glass sheets is 2.5-6g；The compound clarifier raw material composition and
Percentage by weight is：Diluent 45-80%, sulfate 0.4-1%, nitrate 21-47%, cerium oxide 1-3%.
The raw material of the compound clarifier forms and percentage by weight is：Diluent 48-65%, sulfate 0.7-1%, nitric acid
Salt 35-45%, cerium oxide 1.5-2.5%.
The raw material of the compound clarifier forms and percentage by weight is：Diluent 49.7%, sulfate 1%, nitrate
47%, cerium oxide 2.3%.
The sulfate is sodium sulphate or barium sulfate.
The nitrate is sodium nitrate or barium nitrate.
The diluent is silica or aluminium hydroxide, and described silica, aluminium hydroxide are to found guide-lighting glass sheet
Major ingredient used.
A kind of float process leaded light glass sheet compound clarifier proposed by the present invention, using above-mentioned technical proposal, has
Following beneficial effect：
In the component of compound clarifier of the present invention, cerium oxide is that one kind is appraised at the current rate oxide, decomposes discharge oxygen at high temperature,
Promoting the bubble parameters in glass metal, rise, excluded from glass metal, simultaneous oxidation cerium can also reduce the viscosity of glass metal,
Improve the Clarification Performance of glass metal；But the particular/special requirement because of guide-lighting glass sheet to transmitance, and cerium oxide has suction to ultraviolet
Receive, so in the component of compound clarifier, the addition of cerium oxide needs strict control；
Sulfate also belongs to high temperature fining agent, decomposes to give off sulfur trioxide, sulfur dioxide and oxygen under the high temperature conditions, these
Gas enters in melten glass liquid, is advantageous to growing up and dissolving for bubble, so as to play clarification；
Nitrate is not in itself fining agent, plays a part of promoting clarification in clarifying process;Simultaneously nitrate belong to oxidant,
Decolorising agent and fluxing agent, nitrate often with sulfate etc. is shared reaches clarifying effect；
In summary, the present invention has preferably clarification decolorizing effect than single fining agent, solves float process light guide plate glass
The problem of bubble is difficult to eliminate during glass;And compound clarifier of the present invention is avoided and is harmful into using arsenic, antimony etc.
Point, it is a kind of environmentally friendly fining agent, this fining agent has preferably clarification decolorizing effect, Ke Yigeng than single fining agent
The good floating process that is used for produces guide-lighting glass sheet, and solve that bubble in float process light guide plate glass process is difficult to eliminate asks
Topic, effectively eliminate the bubble in glass metal.
Embodiment
The present invention is illustrated in conjunction with specific embodiments：
The compound clarifier of the present invention is applied to floating process and produces guide-lighting glass sheet, is made from the following raw materials in parts by weight：Hydrogen
Alumina powder 45-80%, sodium sulphate or barium sulfate 0.4-1%, sodium nitrate or barium nitrate 21-47%, cerium oxide 1-3%；For leaded light
Because viscosity is higher in melting process, clarifying temp preferentially should be existed glass sheet more than 1500 DEG C from decomposition temperature
More than 1500 DEG C of sulfate, while the element being not present can not be brought in guide-lighting glass sheet into, therefore prioritizing selection barium sulfate；It is right
In nitrate, the decomposition temperature of barium nitrate is higher than sodium nitrate, and clarifying effect is also superior to sodium nitrate, therefore preferred barium nitrate；
Ratio very little of the fining agent in glass batch, it is desirable to accurate weighing.In order to improve weighing precision, compound clarifier choosing
It is pre-mixed by the use of the one of which major ingredient of light guide plate glass batch as diluent；In the embodiment, preferentially from hydrogen-oxygen
Change aluminium as diluent.In using the present invention when meeting fining agent, it is necessary to deduct what is introduced by fining agent from batch
Alumina content.
Compound clarifier in the present invention can compare favourably under same melting conditions with the clarifying effect of sodium pyroantimonate.Experiment
Method is：The composition of lightguide plate fixing glass batch major ingredient, the compound clarifier of different proportion is prepared according to table 1, empirically
Amount in example is added in batch, is founded after well mixed in silica crucible, sample is examined under intense light source after annealing
Survey number of bubbles in glass.Glass melting temperature is:1350 DEG C charging, be incubated 30min, after be warming up to 1560 DEG C be incubated 3 hours, take out
Silica crucible, by glass metal cast molding, after be put into annealing furnace and annealed.
Table 1：The formula of compound clarifier is as shown in the table：
Table 2:The clarification experiments of sodium pyroantimonate
The clarifying effect of different formulations compound clarifier
Table 3：It is formulated 1 experimental example
Table 4：It is formulated 2 experimental examples
Table 5：It is formulated 3 experimental examples
Table 6：It is formulated 4 experimental examples
The compound clarifier of the present invention has preferable clarifying effect it can be seen from the experimental result of embodiment, can be effective
Eliminate the bubble in glass metal.The advantages of compound clarifier provided by the invention, is, antimony is free of in fining agent, can be applicable
Guide-lighting glass sheet is generated with floating process, but clarifying effect can compare favourably with sodium pyroantimonate.
Claims (6)
- A kind of 1. float process leaded light glass sheet compound clarifier, it is characterised in that：The compound clarifier is used for float glass process work Skill produces guide-lighting glass sheet；The amount that compound clarifier is added in per 100g leaded light glass sheets is 2.5-6g；The composite clarification The raw material of agent forms and percentage by weight is：Diluent 45-80%, sulfate 0.4-1%, nitrate 21-47%, cerium oxide 1-3%.
- A kind of 2. float process leaded light glass sheet compound clarifier as claimed in claim 1, it is characterised in that：It is described compound The raw material of fining agent forms and percentage by weight is：Diluent 48-65%, sulfate 0.7-1%, nitrate 35-45%, cerium oxide 1.5-2.5%。
- A kind of 3. float process leaded light glass sheet compound clarifier as claimed in claim 1, it is characterised in that：It is described compound The raw material of fining agent forms and percentage by weight is：Diluent 49.7%, sulfate 1%, nitrate 47%, cerium oxide 2.3%.
- A kind of 4. float process leaded light glass sheet compound clarifier as claimed in claim 1, it is characterised in that：The sulfuric acid Salt is sodium sulphate or barium sulfate.
- A kind of 5. float process leaded light glass sheet compound clarifier as claimed in claim 1, it is characterised in that：The nitric acid Salt is sodium nitrate or barium nitrate.
- A kind of 6. float process leaded light glass sheet compound clarifier as claimed in claim 1, it is characterised in that：The dilution Agent is silica or aluminium hydroxide, and described silica, aluminium hydroxide are to found the major ingredient used in guide-lighting glass sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669049.XA CN107445471B (en) | 2017-08-08 | 2017-08-08 | Composite clarifying agent for producing light guide plate glass by float process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669049.XA CN107445471B (en) | 2017-08-08 | 2017-08-08 | Composite clarifying agent for producing light guide plate glass by float process |
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| CN107445471A true CN107445471A (en) | 2017-12-08 |
| CN107445471B CN107445471B (en) | 2020-07-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851216A (en) * | 2019-01-24 | 2019-06-07 | 中国洛阳浮法玻璃集团有限责任公司 | One kind being used for float process ultra-clear glasses compound clarifier |
| CN112374752A (en) * | 2020-11-19 | 2021-02-19 | 安徽华光光电材料科技集团有限公司蚌埠光电玻璃分公司 | High-transmittance high-strength high-strain-point glass |
| CN112624604A (en) * | 2020-12-31 | 2021-04-09 | 山东省药用玻璃股份有限公司 | Novel composite clarifying agent |
| CN115159839A (en) * | 2022-06-30 | 2022-10-11 | 海南海控特玻科技有限公司 | Method for improving melting clarification quality of neutral medicinal glass |
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| JPH01278424A (en) * | 1988-05-02 | 1989-11-08 | Mitsubishi Metal Corp | Production of sodium antimonate |
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| CN103408223A (en) * | 2013-07-22 | 2013-11-27 | 彩虹显示器件股份有限公司 | Clarifying agent used for TFT-LCD substrate glass and preparation method thereof |
| CN105084756A (en) * | 2015-07-07 | 2015-11-25 | 中国南玻集团股份有限公司 | Glass clarifier and glass preparation method |
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2017
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| JPH01278424A (en) * | 1988-05-02 | 1989-11-08 | Mitsubishi Metal Corp | Production of sodium antimonate |
| WO2010007904A1 (en) * | 2008-07-14 | 2010-01-21 | コニカミノルタオプト株式会社 | Glass substrate for information recording medium and information recording medium |
| CN102659311A (en) * | 2012-04-19 | 2012-09-12 | 益阳生力材料科技有限公司 | Glass refining agent, production method and application |
| CN103332857A (en) * | 2013-06-09 | 2013-10-02 | 彩虹显示器件股份有限公司 | Alkali-free aluminum borosilicate glass clarifier and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851216A (en) * | 2019-01-24 | 2019-06-07 | 中国洛阳浮法玻璃集团有限责任公司 | One kind being used for float process ultra-clear glasses compound clarifier |
| CN112374752A (en) * | 2020-11-19 | 2021-02-19 | 安徽华光光电材料科技集团有限公司蚌埠光电玻璃分公司 | High-transmittance high-strength high-strain-point glass |
| CN112624604A (en) * | 2020-12-31 | 2021-04-09 | 山东省药用玻璃股份有限公司 | Novel composite clarifying agent |
| CN115159839A (en) * | 2022-06-30 | 2022-10-11 | 海南海控特玻科技有限公司 | Method for improving melting clarification quality of neutral medicinal glass |
| CN115159839B (en) * | 2022-06-30 | 2023-08-18 | 海南海控特玻科技有限公司 | Method for improving melting and clarifying quality of neutral medicinal glass |
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| CN107445471B (en) | 2020-07-07 |
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