CN108455860A - A kind of resistance to chemical corrosion devitrified glass outstanding - Google Patents
A kind of resistance to chemical corrosion devitrified glass outstanding Download PDFInfo
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- CN108455860A CN108455860A CN201711476877.8A CN201711476877A CN108455860A CN 108455860 A CN108455860 A CN 108455860A CN 201711476877 A CN201711476877 A CN 201711476877A CN 108455860 A CN108455860 A CN 108455860A
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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
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
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Abstract
The present invention relates to glass material research and development technology fields, disclose a kind of resistance to chemical corrosion devitrified glass outstanding, parent glass formula is had selected by research, the introducing of Nucleating Agent can significantly reduce the crystallization temperature of parent glass, accelerate crystallization velocity, pass through controlling crystallizing temperature, crystallization soaking time and heating rate, it is tiny to obtain crystal grain, structure even compact, crystal content is high, the devitrified glass of function admirable, the devitrified glass being prepared is in addition to chemical resistance outstanding, its flexural strength, microhardness, the performance indicators such as chemical stability also reach primary standard, it is applied on the Storing and conveying of corrosive liquids, it can greatly solve hazardous chemical safety problem, also act as reactor, the liner of electrolytic cell and blender, with great development prospect.
Description
Technical field
The invention belongs to glass research and development technology fields, and in particular to a kind of resistance to chemical corrosion devitrified glass outstanding.
Background technology
The chemical composition of simple glass is Na2SiO3、CaSiO3、SiO2Or Na2O·CaO·6SiO2Deng main component is
Silicate double salt is a kind of non-crystalline solids of random structure.It is widely used in building, is used for, every wind light transmission, belonging to mixed
Close object.It is another have be mixed into the oxides of certain metals either salt and show the coloured glass of color and by physics or
Tempered glass etc. made from the method for chemistry.Devitrified glass, also known as microcrystalline jade or glass-ceramic are comprehensive glass, are a kind of
The novel construction material that foreign country has just developed, its scientific name are called glass quartz.Devitrified glass and our common glass are seen
Get up to differ widely.It has double grading of glass and ceramics, the atomic arrangement inside simple glass be do not have it is well-regulated, this
One of the reason of being also Glass breadks easily.And devitrified glass is made of as ceramics crystal, that is to say, that its atomic arrangement
It is regular.So devitrified glass is higher than the brightness of ceramics, it is stronger than glass toughness.The microstructure of devitrified glass mainly by
It forms and heat treatment process is determined, physical characteristic such as mechanical strength, fracture toughness, translucency, heat resistanceheat resistant for devitrified glass
Pinking etc. has a significant impact.The microstructure of devitrified glass mainly has pine-tree structure, ultra-fine grain, perforated membrane, relict texture, product
Timber structure, column interlocking structure, isolated island structure, sheet twin etc..
In recent years, bio-microcrystal glass has obtained research extensively and profoundly, and achieves a series of achievements.If by crystallite glass
The chemical resistance of glass further increases, and is applied on the Storing and conveying of corrosive liquids, can greatly solve
Hazardous chemical safety problem.
Invention content
The purpose of the present invention is for existing problem, providing a kind of resistance to chemical corrosion devitrified glass outstanding,
The chemical resistance of devitrified glass can be significantly improved.
The present invention is achieved by the following technical solutions：
A kind of resistance to chemical corrosion devitrified glass outstanding, the ingredient of parent glass are contained according to mass percent meter：Two
Silica accounts for 55-58%, calcium oxide accounts for 18-20%, magnesia accounts for 6-8%, aluminium oxide accounts for 3-5%, potassium oxide accounts for 2.0-2.3%, oxidation
Sodium accounts for 1.5-1.8%, remaining as boron oxide, and preparation method includes the following steps：
（1）Corresponding raw mineral materials is prepared according to parent glass content, the Nucleating Agent porcelain that mass fraction accounts for 7.5-8.0% is added
Matter mortar grinder is uniformly mixed, and is then charged into High-Alumina crucible, is sent into Elema electric furnace and is melted at 1300-1400 DEG C,
Melting time is 30-40 minutes, and soaking time is 1-2 hours；
（2）After glass melt homogenizing, test specimen is poured into a mould using glass moulding processes, is put into test specimen rapidly after moulding by casting in advance
It is made annealing treatment in the resistance furnace of preheating, annealing temperature is 660-680 DEG C, and annealing time is 25-30 minutes, then to glass
Part is heat-treated；
（3）Heat treatment process is：Glass workpiece is heated to 830-850 DEG C, coring at this temperature keeps the temperature 1.0-1.5 hours, so
Continuing to be heated to 880-900 DEG C afterwards, is continuing crystallization isothermal holding at this temperature 1.5-2.0 hours, the examination through Overheating Treatment
Part naturally cools to room temperature.
It is further described as to said program, step（1）The Nucleating Agent according to mass percent meter by below at
It is grouped as：Silicon carbide accounts for 10-12%, zinc oxide accounts for 15-18%, calcirm-fluoride accounts for 24-28%, titanium oxide accounts for 25-30%, remaining as oxidation
Zirconium.
It is further described as to said program, step（1）The grinding particle size is between 30-50 mesh.
It is further described as to said program, step（2）Mold is placed on Muffle furnace by the glass workpiece before cast
In be previously heated to 450-480 DEG C.
It is further described as to said program, step（3）Heating rate is in the heat treatment：Reaching 600 DEG C
Heating rate before is 5-6 DEG C/min, is 2.0-2.5 DEG C/min reaching the heating rate after 800 DEG C, 600-800
Heating rate between DEG C is 3.0-3.5 DEG C/min.
The present invention has the following advantages compared with prior art：In order to improve the chemical resistance of existing devitrified glass, this
Invention provides a kind of resistance to chemical corrosion devitrified glass outstanding, and parent glass formula, Nucleating Agent are had selected by research
Introducing can significantly reduce the crystallization temperature of parent glass, accelerate crystallization velocity, pass through controlling crystallizing temperature, crystallization soaking time
And heating rate, it is tiny to obtain crystal grain, structure even compact, and crystal content is high, and the devitrified glass of function admirable is prepared
Devitrified glass in addition to chemical resistance outstanding, the performance indicators such as flexural strength, microhardness, chemical stability
Also reach primary standard, applied on the Storing and conveying of corrosive liquids, hazardous chemical peace can greatly be solved
Full problem also acts as the liner of reactor, electrolytic cell and blender, has great development prospect.
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
Embodiment 1
A kind of resistance to chemical corrosion devitrified glass outstanding, the ingredient of parent glass are contained according to mass percent meter：Two
Silica, which accounts for 55%, calcium oxide and accounts for 18%, magnesia and account for 6%, aluminium oxide and account for 3%, potassium oxide and account for 2.0%, sodium oxide molybdena, to be accounted for 1.5%, is remaining
For boron oxide, preparation method includes the following steps：
（1）Corresponding raw mineral materials is prepared according to parent glass content, the Nucleating Agent that addition mass fraction accounts for 7.5% is ground with porcelain
Alms bowl ground and mixed is uniform, is then charged into High-Alumina crucible, is sent into Elema electric furnace and is melted at 1300 DEG C, melting time is
30 minutes, soaking time was 1 hour；
（2）After glass melt homogenizing, test specimen is poured into a mould using glass moulding processes, is put into test specimen rapidly after moulding by casting in advance
It is made annealing treatment in the resistance furnace of preheating, annealing temperature is 660 DEG C, and annealing time is 25 minutes, is then carried out to glass workpiece
Heat treatment；
（3）Heat treatment process is：Glass workpiece is heated to 830 DEG C, coring at this temperature keeps the temperature 1.0 hours, is then continuing
880 DEG C are heated to, continues crystallization isothermal holding at this temperature 1.5 hours, the test specimen through Overheating Treatment naturally cools to room temperature.
It is further described as to said program, step（1）The Nucleating Agent according to mass percent meter by below at
It is grouped as：Silicon carbide, which accounts for 10%, zinc oxide and accounts for 15%, calcirm-fluoride and account for 24%, titanium oxide, accounts for 25%, remaining as zirconium oxide.
It is further described as to said program, step（1）The grinding particle size is between 30-50 mesh.
It is further described as to said program, step（2）Mold is placed on Muffle furnace by the glass workpiece before cast
In be previously heated to 450 DEG C.
It is further described as to said program, step（3）Heating rate is in the heat treatment：Reaching 600 DEG C
Heating rate before is 5 DEG C/min, is 2.0 DEG C/min reaching the heating rate after 800 DEG C, between 600-800 DEG C
Heating rate be 3.0 DEG C/min.
Embodiment 2
A kind of resistance to chemical corrosion devitrified glass outstanding, the ingredient of parent glass are contained according to mass percent meter：Two
Silica, which accounts for 56%, calcium oxide and accounts for 19%, magnesia and account for 7%, aluminium oxide and account for 4%, potassium oxide and account for 2.1%, sodium oxide molybdena, to be accounted for 1.6%, is remaining
For boron oxide, preparation method includes the following steps：
（1）Corresponding raw mineral materials is prepared according to parent glass content, the Nucleating Agent that addition mass fraction accounts for 7.8% is ground with porcelain
Alms bowl ground and mixed is uniform, is then charged into High-Alumina crucible, is sent into Elema electric furnace and is melted at 1350 DEG C, melting time is
35 minutes, soaking time was 1.5 hours；
（2）After glass melt homogenizing, test specimen is poured into a mould using glass moulding processes, is put into test specimen rapidly after moulding by casting in advance
It is made annealing treatment in the resistance furnace of preheating, annealing temperature is 670 DEG C, and annealing time is 28 minutes, is then carried out to glass workpiece
Heat treatment；
（3）Heat treatment process is：Glass workpiece is heated to 840 DEG C, coring at this temperature keeps the temperature 1.2 hours, is then continuing
890 DEG C are heated to, continues crystallization isothermal holding at this temperature 1.8 hours, the test specimen through Overheating Treatment naturally cools to room temperature.
It is further described as to said program, step（1）The Nucleating Agent according to mass percent meter by below at
It is grouped as：Silicon carbide, which accounts for 11%, zinc oxide and accounts for 16%, calcirm-fluoride and account for 26%, titanium oxide, accounts for 28%, remaining as zirconium oxide.
It is further described as to said program, step（1）The grinding particle size is between 30-50 mesh.
It is further described as to said program, step（2）Mold is placed on Muffle furnace by the glass workpiece before cast
In be previously heated to 460 DEG C.
It is further described as to said program, step（3）Heating rate is in the heat treatment：Reaching 600 DEG C
Heating rate before be 5.5 DEG C/min, reach the heating rate after 800 DEG C be 2.3 DEG C/min, 600-800 DEG C it
Between heating rate be 3.3 DEG C/min.
Embodiment 3
A kind of resistance to chemical corrosion devitrified glass outstanding, the ingredient of parent glass are contained according to mass percent meter：Two
Silica, which accounts for 58%, calcium oxide and accounts for 20%, magnesia and account for 8%, aluminium oxide and account for 5%, potassium oxide and account for 2.3%, sodium oxide molybdena, to be accounted for 1.8%, is remaining
For boron oxide, preparation method includes the following steps：
（1）Corresponding raw mineral materials is prepared according to parent glass content, the Nucleating Agent that addition mass fraction accounts for 8.0% is ground with porcelain
Alms bowl ground and mixed is uniform, is then charged into High-Alumina crucible, is sent into Elema electric furnace and is melted at 1400 DEG C, melting time is
40 minutes, soaking time was 2 hours；
（2）After glass melt homogenizing, test specimen is poured into a mould using glass moulding processes, is put into test specimen rapidly after moulding by casting in advance
It is made annealing treatment in the resistance furnace of preheating, annealing temperature is 680 DEG C, and annealing time is 30 minutes, is then carried out to glass workpiece
Heat treatment；
（3）Heat treatment process is：Glass workpiece is heated to 850 DEG C, coring at this temperature keeps the temperature 1.5 hours, is then continuing
900 DEG C are heated to, continues crystallization isothermal holding at this temperature 2.0 hours, the test specimen through Overheating Treatment naturally cools to room temperature.
It is further described as to said program, step（1）The Nucleating Agent according to mass percent meter by below at
It is grouped as：Silicon carbide, which accounts for 12%, zinc oxide and accounts for 18%, calcirm-fluoride and account for 28%, titanium oxide, accounts for 30%, remaining as zirconium oxide.
It is further described as to said program, step（1）The grinding particle size is between 30-50 mesh.
It is further described as to said program, step（2）Mold is placed on Muffle furnace by the glass workpiece before cast
In be previously heated to 480 DEG C.
It is further described as to said program, step（3）Heating rate is in the heat treatment：Reaching 600 DEG C
Heating rate before is 6 DEG C/min, is 2.5 DEG C/min reaching the heating rate after 800 DEG C, between 600-800 DEG C
Heating rate be 3.5 DEG C/min.
Claims (5)
1. a kind of resistance to chemical corrosion devitrified glass outstanding, which is characterized in that the ingredient of parent glass is according to quality percentage
It is contained than meter：Silica accounts for 55-58%, calcium oxide accounts for 18-20%, magnesia accounts for 6-8%, aluminium oxide accounts for 3-5%, potassium oxide accounts for
2.0-2.3%, sodium oxide molybdena account for 1.5-1.8%, remaining as boron oxide, and preparation method includes the following steps：
（1）Corresponding raw mineral materials is prepared according to parent glass content, the Nucleating Agent porcelain that mass fraction accounts for 7.5-8.0% is added
Matter mortar grinder is uniformly mixed, and is then charged into High-Alumina crucible, is sent into Elema electric furnace and is melted at 1300-1400 DEG C,
Melting time is 30-40 minutes, and soaking time is 1-2 hours；
（2）After glass melt homogenizing, test specimen is poured into a mould using glass moulding processes, is put into test specimen rapidly after moulding by casting in advance
It is made annealing treatment in the resistance furnace of preheating, annealing temperature is 660-680 DEG C, and annealing time is 25-30 minutes, then to glass
Part is heat-treated；
（3）Heat treatment process is：Glass workpiece is heated to 830-850 DEG C, coring at this temperature keeps the temperature 1.0-1.5 hours, so
Continuing to be heated to 880-900 DEG C afterwards, is continuing crystallization isothermal holding at this temperature 1.5-2.0 hours, the examination through Overheating Treatment
Part naturally cools to room temperature.
2. a kind of resistance to chemical corrosion devitrified glass outstanding as described in claim 1, which is characterized in that step（1）It is described
Nucleating Agent is consisted of the following compositions according to mass percent meter：Silicon carbide accounts for 10-12%, zinc oxide accounts for 15-18%, calcirm-fluoride accounts for
24-28%, titanium oxide account for 25-30%, remaining as zirconium oxide.
3. a kind of resistance to chemical corrosion devitrified glass outstanding as described in claim 1, which is characterized in that step（1）It is described
Particle size is ground between 30-50 mesh.
4. a kind of resistance to chemical corrosion devitrified glass outstanding as described in claim 1, which is characterized in that step（2）It is described
Mold is placed in Muffle furnace before cast and is previously heated to 450-480 DEG C by glass workpiece.
5. a kind of resistance to chemical corrosion devitrified glass outstanding as described in claim 1, which is characterized in that step（3）It is described
Heating rate is in heat treatment：Heating rate before reaching 600 DEG C is 5-6 DEG C/min, is reaching the liter after 800 DEG C
Warm speed is that the heating rate between 2.0-2.5 DEG C/min, 600-800 DEG C is 3.0-3.5 DEG C/min.
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| CN201711476877.8A CN108455860A (en) | 2017-12-29 | 2017-12-29 | A kind of resistance to chemical corrosion devitrified glass outstanding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975712A (en) * | 2018-08-31 | 2018-12-11 | 王召惠 | A kind of preparation method of high intensity type devitrified glass resistant to chemical etching |
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2017
- 2017-12-29 CN CN201711476877.8A patent/CN108455860A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975712A (en) * | 2018-08-31 | 2018-12-11 | 王召惠 | A kind of preparation method of high intensity type devitrified glass resistant to chemical etching |
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Application publication date: 20180828 |
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