CN109650723A - A kind of the alkali-free high alumina Pyrex and preparation method of high rigidity - Google Patents
A kind of the alkali-free high alumina Pyrex and preparation method of high rigidity Download PDFInfo
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- CN109650723A CN109650723A CN201910154900.4A CN201910154900A CN109650723A CN 109650723 A CN109650723 A CN 109650723A CN 201910154900 A CN201910154900 A CN 201910154900A CN 109650723 A CN109650723 A CN 109650723A
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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
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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Abstract
The present invention discloses the alkali-free high alumina Pyrex and preparation method of a kind of high rigidity, glass alkaline including earth metal and does not add and optimizes the incorporation of CaO in formula, high aluminium borosilicate glass is prepared by high temperature melting method, due to containing CaO in the present invention, it can not only play and glass is promoted to melt and adjust the effect of mouldability, also meet the performances such as hardness, it is made to possess excellent hardness；There is considerable economic and social benefit with the high alumina Pyrex with superior dielectric performance prepared by this method, application prospect is very wide.
Description
Technical field
The invention belongs to glass arts, are related to the alkali-free high alumina Pyrex and preparation method of a kind of high rigidity.
Background technique
Since 21 century, with the rapid proliferation of nowadays electronic products such as mobile phone, tablet computer, PDA, high-performance has been shown
The demand of material is also growing.TFT-LCD is best color display apparatus at present, is that mobile phone, MP3 player, MP4 are broadcast
It puts the Miniature Terminals such as device, automatic navigator and shows equipment and TV, laptop, the mainstream display device on desktop computer,
TFT-LCD becomes the main product of flat panel display product, as the main composition part of TFT-LCD display, liquid-crystalline glasses base
The performance of plate directly influences the quality of display pannel, especially will affect the yields of glass substrate in process of production, directly
Connect the overall cost for influencing display pannel.
Base plate glass is mainly high aluminum borate glass, and high rigidity can form base plate glass and be effectively protected, reduce
Base plate glass damages in packaging, transport, processing and use process.Due to the smallest display unit in TFT display technology
For size about at tens microns, the small scratch in base plate glass surface will all cause the generation of waste product in coating process, reduce production
Efficiency.Therefore, the hardness on base plate glass surface is higher, generates abrasive probability with regard to smaller.
The influence factor of the hardness on base plate glass surface includes several aspects such as chemical composition, thermal history and surface treatment.
By chemical composition, it can directly judge that component glass surface hardness is high, match so as to optimize the material side of base plate glass
Than；By thermal history, better annealing process can be provided；By surface treatment, the surface hardness of base plate glass can be made to obtain
To reinforcement.
CN201710963120.5 discloses a kind of preparation method of high hardness wear-resisting glass.Mainly pass through magnetron sputtering
Method each film layer is closely linked, in glass matrix surface successively plated film to improve the hardness of glass.Its
Be by the method for surface treatment it is that glass hard (HRC65Yi Shang) is strengthened, improves hardness not by chemical composition is changed.
CN201610209072.6 discloses a kind of preparation method of high rigidity glass.The glass includes by mass percentage
Following components: SiO2: 70~78wt%, Al2O3: 1~3wt%, Na2O:9~13wt%, CaO:6~10wt%, MgO:2~
5wt%, SrO:0.5~3.5wt%, K2O:0~1wt%.But formula contains alkali metal oxide, will lead to producing in this way
Producing line is polluted in the process.
CN201810125660.0 discloses a kind of high hardness wear-resisting glass and preparation method thereof.More than the glass includes
The component of parts by weight is made: 24-32 parts of quartz sand, 18-26 parts of soda ash, 10-15 parts of nano silica, 5-12 parts of mica powder,
Nano oxidized graphite 4-9 parts, 3-8 parts of molybdenum disulfide, 2-6 parts of sodium metasilicate, 0.6-2.4 parts of zinc borate, 2-7 parts of silicon nitride, oxidation
4-8 parts of calcium, 0.8-1.6 parts of adhesive, 0.4-1.2 parts of grinding aid, 0.3-0.8 parts of colorant.Formula contains soda ash, sulfide
Deng, formula be not suitable for be used as base plate glass formula.
CN201710354574.2 discloses a kind of Aluminiu, boron silicate glass without alkali.The glass include by mass percentage with
Lower component: silica 45-52%, aluminum oxide 10-16%, zirconium dioxide 9-16%, magnesia 12-15%, barium monoxide
5-10%, tin oxide 8-14%, vanadic anhydride 15-22%, rare-earth oxide 7-15%.It contains BaO in forming,
Ba2+Belong to heavy metal ion, harm can be generated to environment and human body.
Currently, having the Aluminiu, boron silicate glass without alkali of high rigidity, alkali metal, fusion temperature mistake are all contained in component
High, processability difference contains to the biggish ingredient of environmental hazard, it is made to cannot be used for electric substrate glass.Therefore it is badly in need of one
Kind high rigidity, physical and chemical performance are excellent and the electric substrate glass of pollution is not generated to environment.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, it is an object of the present invention to provide a kind of alkali-free high alumina Pyrex of high rigidity
And preparation method, the high alumina Pyrex of preparation not only meet the performances such as thermal expansion coefficient, density, also have excellent hardness.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of alkali-free high alumina Pyrex of high rigidity, formula include following raw material components by mass fraction: 61.40~
The quartz sand of 62.95wt%, the alumina powder of 17.05~17.48wt%, the boric anhydride of 10.35~10.62wt%, 1.37~
The magnesia of 1.40wt%, the calcium oxide of 6.51~8.81wt%, the strontium oxide strontia of 0.85~0.87wt% and the oxygen of 0.17wt%
Change tin.
A kind of preparation method of high rigidity alkali-free high alumina Pyrex, comprising the following steps:
Step 1) weighs raw material according to material quality score；
Step 2), by the raw material of weighing be sequentially placed into batch mixer be uniformly mixed form batch；
Alumina crucible is preheated to 1450 DEG C with stove by step 3), and batch is added and is warming up to 1680 DEG C, heat preservation
240min；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
Further, alumina crucible with stove is preheated to 1450 DEG C in the step 3), and batch is added and passes through 50-
60min is warming up to 1680 DEG C.
Further, the raw material of weighing is sequentially placed into batch mixer in the step 2) mix to the uniformity be greater than 99% after
Form batch.
Alkali-free high alumina Pyrex, hardness are 706.50~724.65kgf/mm2。
The alkali-free high alumina Pyrex and preparation method of high rigidity of the invention are meeting electric substrate glass thermal expansion system
Under conditions of number, density etc. require, glass alkaline including earth metal and does not add and optimizes the incorporation of CaO in formula, passes through
High temperature melting method prepares high aluminium borosilicate glass, due to containing CaO in the present invention, can not only play promote glass melt and
The effect for adjusting mouldability, also meets the performances such as hardness, it is made to possess excellent hardness.
A kind of high aluminium borosilicate glass of alkali-free of prepared high rigidity is suitable for mobile phone, smart phone, plate
Computer, laptop, television set, MTA equipment, wrist-watch, industrial display etc..Therefore, excellent with having for this method preparation
The high alumina Pyrex of dielectric properties have considerable economic and social benefit, and application prospect is very wide.
Detailed description of the invention
Fig. 1 is that the high aluminium borosilicate glass hardness of alkali-free made from preparation method according to the invention increases with CaO content
Trend chart.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.
The alkali-free high alumina Pyrex of high rigidity of the present invention, formula include following raw material components by mass fraction: 61.40
The quartz sand of~62.95wt%, the alumina powder of 17.05~17.48wt%, the boric anhydride of 10.35~10.62wt%, 1.37~
The magnesia of 1.40wt%, the calcium oxide of 6.51~8.81wt%, the strontium oxide strontia of 0.85~0.87wt% and the oxygen of 0.17wt%
Change tin.
Embodiment 1:
Step 1), according to material quality score, the quartz sand of precise 62.95wt%, the boric anhydride of 10.62wt%,
The alumina powder of 17.48wt%, the magnesia of 1.40wt%, the calcium oxide of 6.51wt%, the strontium oxide strontia of 0.87wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 1 sample of embodiment is 724.65kgf/mm2。
Embodiment 2,
Step 1), according to material quality score, the quartz sand of precise 62.63wt%, the boric anhydride of 10.56wt%,
The alumina powder of 17.40wt%, the magnesia of 1.40wt%, the calcium oxide of 6.98wt%, the strontium oxide strontia of 0.86wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 2 sample of embodiment is 711.95kgf/mm2。
Embodiment 3,
Step 1), according to material quality score, the quartz sand of precise 62.32wt%, the boric anhydride of 10.51wt%,
The alumina powder of 17.31wt%, the magnesia of 1.39wt%, the calcium oxide of 7.44wt%, the strontium oxide strontia of 0.86wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 3 sample of embodiment is 706.50kgf/mm2。
Embodiment 4,
Step 1), according to material quality score, the quartz sand of precise 62.01wt%, the boric anhydride of 10.46wt%,
The alumina powder of 17.22wt%, the magnesia of 1.38wt%, the calcium oxide of 7.90wt%, the strontium oxide strontia of 0.86wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 4 sample of embodiment is 720.05kgf/mm2。
Embodiment 5,
Step 1), according to material quality score, the quartz sand of precise 61.70wt%, the boric anhydride of 10.41wt%,
The alumina powder of 17.14wt%, the magnesia of 1.37wt%, the calcium oxide of 8.36wt%, the strontium oxide strontia of 0.85wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 5 sample of embodiment is 718.70kgf/mm2。
Embodiment 6,
Step 1), according to material quality score, the quartz sand of precise 61.40wt%, the boric anhydride of 10.35wt%,
The alumina powder of 17.05wt%, the magnesia of 1.37wt%, the calcium oxide of 8.81wt%, the strontium oxide strontia of 0.85wt% and
The tin oxide of 0.17wt%；
The raw material of weighing is sequentially placed into batch mixer by step 2), mix to the uniformity be greater than 99% after form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added by step 3)；Then, pass through 50-60min liter
Temperature keeps the temperature 240min to 1680 DEG C；
Glass metal is poured into the mold after preheating, is then moved into glass in annealing furnace, at 740-760 DEG C by step 4)
Under anneal；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina borosilicate glass of high rigidity
Glass.
The present invention tests the hardness of glass sample using vickers microhardness indentation test.Utilize following formula
(1) hardness of glass sample is calculated.
In formula: the added load of P-, kgf；A-impression contact area, mm2；The cornerwise average value of d-remnants impression two,
mm。
Hardness by calculating 6 sample of embodiment is 722.85kgf/mm2。
With reference to Fig. 1, by adding and optimizing the incorporation of CaO, the alkali-free high alumina borosilicate glass of available excellent hardness
Glass.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than its limitations, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (5)
1. a kind of alkali-free high alumina Pyrex of high rigidity, it is characterised in that it includes following raw material group that it, which is formulated by mass fraction,
Point: the quartz sand of 61.40~62.95wt%, the alumina powder of 17.05~17.48wt%, the boron of 10.35~10.62wt%
Acid anhydride, the magnesia of 1.37~1.40wt%, the calcium oxide of 6.51~8.81wt%, the strontium oxide strontia of 0.85~0.87wt% and
The tin oxide of 0.17wt%.
2. a kind of preparation method of the alkali-free high alumina Pyrex of high rigidity described in claim 1, it is characterised in that including following
Step:
Step 1) weighs raw material according to material quality score；
Step 2), by the raw material of weighing be sequentially placed into batch mixer be uniformly mixed form batch；
Alumina crucible is preheated to 1450 DEG C with stove, batch is added and is warming up to 1680 DEG C, keeps the temperature 240min by step 3)；
Step 4), by glass metal pour into preheating after mold in, then by glass move into annealing furnace in, at 740-760 DEG C into
Row annealing；
Step 5) is cooled to room temperature according to the cooling rate of 1~3 DEG C/min to get the alkali-free high alumina Pyrex of high rigidity.
3. preparation method according to claim 2, it is characterised in that: alumina crucible is preheated with stove in the step 3)
To 1450 DEG C, batch is added by 50-60min and is warming up to 1680 DEG C.
4. preparation method according to claim 2, it is characterised in that: be sequentially placed into the raw material of weighing in the step 2)
It is mixed in batch mixer to the uniformity to be greater than after 99% and forms batch.
5. the alkali-free high alumina Pyrex prepared according to any one of claim 2-4 method, it is characterised in that: hardness 706.50
~724.65kgf/mm2。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240406A (en) * | 2019-06-28 | 2019-09-17 | 陕西科技大学 | A kind of alkali-free high alumina Pyrex and preparation method thereof with excellent endurance |
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| CN110240406A (en) * | 2019-06-28 | 2019-09-17 | 陕西科技大学 | A kind of alkali-free high alumina Pyrex and preparation method thereof with excellent endurance |
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Application publication date: 20190419 |