CN103663971A - Low-fluorine microcrystalline glass - Google Patents
Low-fluorine microcrystalline glass Download PDFInfo
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- CN103663971A CN103663971A CN201310655639.9A CN201310655639A CN103663971A CN 103663971 A CN103663971 A CN 103663971A CN 201310655639 A CN201310655639 A CN 201310655639A CN 103663971 A CN103663971 A CN 103663971A
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- devitrified glass
- oxide
- low fluorine
- fluorine
- fluorine devitrified
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Abstract
Provided low-fluorine microcrystalline glass comprises the following components in percent by weight: 56%<silicon dioxide<72%, 5%<=potassium oxide<8%, 18%<calcium oxide<=20%, 1%<=fluorine<=3%, 0<=aluminium oxide<1%, 0<zinc oxide<=4%, 0<titanium oxide<=2% and the balance sodium oxide. The provided low-fluorine microcrystalline glass presents the impression of semitransparent jade, has the moist degree and the waxy texture of natural jade, is fine in texture, glittering and translucent, free of radiation, good in toughness and high in strength, is easy for further processing and shaping, and is widely applicable to the fields such as substitutes of high-grade stone and the like.
Description
Technical field
The present invention relates to glass-ceramic field, particularly a kind of low fluorine devitrified glass.
Background technology
Along with Chinese national economy is stablized sustainable development, people's living standard improves thereupon, demand expanding day to high-grade material, particularly more urgent to the substitute products demand of radiationless high-grade stone material, but the substitute products fragility of domestic high-grade stone material is large, be not easy machine-shaping, cause a lot of high-grade stone materials need to be from external import, cost greatly promotes.
Devitrified glass is called again glass-ceramic, has glass and ceramic dual nature, and devitrified glass is by crystal composition, and its atomic arrangement is regular, and therefore, devitrified glass is higher than ceramic brightness, and stronger than glass toughness.Devitrified glass has been concentrated triple advantages of glass, pottery and lithotome, be better than lithotome and pottery, can be used for building curtain wall and indoor high-grade decoration, also can do structured material mechanically, insulating material on electronics, electrician, the baseboard material of large-scale integrated circuit, heat-resisting vessel, chemical industry and impregnating material and the mine high-abrasive material etc. of splitting of microwave oven, become the substitute products of desirable high-grade stone material.
Existing devitrified glass mostly is high fluorine glassy product, because fluorine volatilizees seriously aborning, make the bad control of stability of producing, cause devitrified glass to be produced into power lower, even if successfully produce devitrified glass also exist tone single, there is no texture, apparent porosity is high, production stability is low and fragility is large, is not easy the shortcomings such as machine-shaping, and high fluorine glassy product is in process of production to kiln seriously corroded, cause kiln shortening in work-ing life, production cost increases.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of exquisite in texture, glittering and translucent, good toughness, low fluorine devitrified glass that intensity is high.
For solving the problems of the technologies described above, low fluorine devitrified glass provided by the invention comprises following composition by weight percentage: 56% < silicon-dioxide < 72%, 5%≤potassium oxide < 8%, 18% < calcium oxide≤20%, 1%≤fluorine≤3%, 0≤aluminum oxide <, 1%, 0 < zinc oxide≤4%, 0 < titanium oxide≤2%, surplus is sodium oxide.
Each composition at devitrified glass provided by the invention limits as follows by weight percentage:
Silicon-dioxide is given chemical stability and the thermostability that devitrified glass is good, can improve the intensity of devitrified glass, reduce the coefficient of expansion of devitrified glass, but along with content increases, can cause the viscosity of glass metal to increase, the glass melting temperature of devitrified glass raises, so the content of silicon-dioxide is set as: 56% < silicon-dioxide < 72%.
Potassium oxide is good solubility promoter, can improve the glossiness of devitrified glass, promotes fusing and the clarification of glass metal, can also reduce the viscosity of glass metal, so the content of potassium oxide is set as: 5%≤potassium oxide < 8%.
Calcium oxide can reduce the high temperature viscosity of glass metal, promotes fusing and the clarification of glass metal, increase chemical stability, physical strength and the hardness of devitrified glass, so the content of calcium oxide is set as: 18% < calcium oxide≤20%.
Fluorine is a kind of good opacifying agent, and during fluorine too high levels, the production stability of devitrified glass is low, and fragility is large, easy devitrification, so the content of fluorine is set as: 1%≤fluorine≤3%, more preferably, 1%≤fluorine < 2%.
Aluminum oxide can reduce the tendency towards devitrification of devitrified glass, improve chemical stability and physical strength and hardness, improve thermostability, reduce electrical insulating property, but along with the lifting of alumina content, can cause devitrified glass surface to produce striped, and can improve the viscosity of glass metal, make fusing and clarification that difficulty occur, increase on the contrary tendency towards devitrification, so the content of aluminum oxide is set as: 0≤aluminum oxide < 1%.
Zinc oxide can improve the chemical stability of devitrified glass, reduces the thermal expansivity of devitrified glass, but along with the increase of zinc oxide content, can increase ceramics tendency, so the content of zinc oxide is set as: 0 < zinc oxide≤4%.
Titanium oxide can reduce the thermal expansivity of devitrified glass, but introduces when too much, can increase the crystallization ability of devitrified glass, so the content of titanium oxide is set as: 0 < titanium oxide≤2%.
Sodium oxide can reduce the viscosity of glass metal, promote fusing and the clarification of glass metal, so the remaining composition of devitrified glass is set as sodium oxide.
In the low fluorine devitrified glass of the present invention, fluorine content is low, the composition proportion of the high silicon high calcium of its low fluorine is conducive to improve stability and the success ratio that devitrified glass is produced, the low fluorine devitrified glass apparent porosity of mentioned component proportioning is low, water-intake rate is low, impelling strength and anti-folding, ultimate compression strength are high, and machine-shaping property is strong, and the perception of this low fluorine devitrified glass presents translucent beautiful matter shape, exquisite in texture, glittering and translucent.
Preferably, the main crystalline phase of described low fluorine devitrified glass is Na
4～3k
2～3ca
5(Si
12o
30) F
4, this crystalline phase is lath-shaped, has greatly improved toughness and the bending and compressive strength of low fluorine devitrified glass, and is easy to processing cutting.
Preferably, the impelling strength of described low fluorine devitrified glass is 5.0kj/cm
3～5.6kj/cm
3.
Preferably, the Mohs' hardness of described low fluorine devitrified glass is 6.0～7.0.
Preferably, the folding strength of described low fluorine devitrified glass is 65MPa～85MPa.
Preferably, the ultimate compression strength of described low fluorine devitrified glass is 600MPa～700MPa.
Preferably, the volume density of described low fluorine devitrified glass is 2.5g/cm
3～2.8g/cm
3.
Low fluorine devitrified glass perception provided by the invention presents translucent beautiful matter shape, has moist degree and the wax sense of natural jade, exquisite in texture, glittering and translucent, radiationless, and good toughness, intensity are high, easily further machine-shaping, can be widely used in the fields such as substitute of high-grade stone material.
Embodiment
For above-mentioned purpose, the feature and advantage of invention can be become apparent more, below the specific embodiment of the present invention is described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, so the present invention is not subject to the restriction of following public specific embodiment.
Table 1 is for forming the performance perameter table that bends down fluorine devitrified glass in heterogeneity.
Knowing under the condition of concrete component content, by methods known in the art, can make low fluorine devitrified glass of the present invention, preferably preparation as follows:
1, one or more in selection quartz sand, soda ash, salt of wormwood, calcite, aluminum oxide, Calcium Fluoride (Fluorspan), zinc oxide, titanium oxide provide the one-tenth of low fluorine jade shape devitrified glass to be grouped into as raw material, the composition proportion of pressing embodiment in table 1 is calculated the consumption of raw material, after weighing, is mixed to get basestocks;
2, basestocks is melted to 16h～24h at 1450 ℃～1500 ℃, after clarification, obtain glass metal;
3, by glass metal calendering formation at 1050 ℃～1100 ℃, make the sheet material that thickness is 5mm～30mm;
4, sheet material is incubated to 6h～12h at 650 ℃～900 ℃ and carries out crystallization processing, by the cooling annealing of blower fan, make low fluorine devitrified glass again, more preferably successively at 650 ℃ of insulation 1～2h, 700 ℃ of insulation 1～2h, 750 ℃ of insulation 1～2h, 800 ℃ of insulation 1～2h, 850 ℃ of insulation 1～2h and 900 ℃ of insulation 1～2h carry out crystallization processing.
Table 1
As shown in table 1, low fluorine devitrified glass of the present invention has higher anti-folding and ultimate compression strength, and hardness is high, and impelling strength is strong.The low fluorine devitrified glass of finished product has moist degree and the wax sense of natural jade, and exquisite in texture is glittering and translucent, can be prepared into the section bar of different size to facilitate processing.
Although the present invention is described in conjunction with above embodiment, but the present invention is not defined to above-described embodiment, and being only subject to the restriction of claims, those of ordinary skills can easily modify to it and change, but do not leave essence design of the present invention and scope.
Claims (7)
1. one kind low fluorine devitrified glass, it is characterized in that, comprise by weight percentage following composition: 56% < silicon-dioxide < 72%, 5%≤potassium oxide <, 8%, 18% < calcium oxide≤20%, 1%≤fluorine≤3%, 0≤aluminum oxide < 1%, 0 < zinc oxide≤4%, 0 < titanium oxide≤2%, surplus is sodium oxide.
2. low fluorine devitrified glass according to claim 1, is characterized in that, the main crystalline phase of described low fluorine devitrified glass is Na
4～3k
2～3ca
5(Si
12o
30) F
4.
3. low fluorine devitrified glass according to claim 1, is characterized in that, the impelling strength of described low fluorine devitrified glass is 5.0kj/cm
3～5.6kj/cm
3.
4. low fluorine devitrified glass according to claim 1, is characterized in that, the Mohs' hardness of described low fluorine devitrified glass is 6.0～7.0.
5. low fluorine devitrified glass according to claim 1, is characterized in that, the folding strength of described low fluorine devitrified glass is 65MPa～85MPa.
6. low fluorine devitrified glass according to claim 1, is characterized in that, the ultimate compression strength of described low fluorine devitrified glass is 600MPa～700MPa.
7. low fluorine devitrified glass according to claim 1, is characterized in that, the volume density of described low fluorine devitrified glass is 2.5g/cm
3～2.8g/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655639.9A CN103663971A (en) | 2013-12-06 | 2013-12-06 | Low-fluorine microcrystalline glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655639.9A CN103663971A (en) | 2013-12-06 | 2013-12-06 | Low-fluorine microcrystalline glass |
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| Publication Number | Publication Date |
|---|---|
| CN103663971A true CN103663971A (en) | 2014-03-26 |
Family
ID=50302874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310655639.9A Pending CN103663971A (en) | 2013-12-06 | 2013-12-06 | Low-fluorine microcrystalline glass |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386162A (en) * | 1981-10-05 | 1983-05-31 | Corning Glass Works | Alkali metal, calcium fluorosilicate glass-ceramic articles |
| DE4125698C1 (en) * | 1991-08-02 | 1992-11-26 | Schott Glaswerke, 6500 Mainz, De | Glass ceramic material for replacing granite or marble in decorative applications - contains silica, alumina, calcia, magnesia, zirconia, barium oxide, potassium oxide, sodium oxide and fluorine |
| JPH06144665A (en) * | 1992-11-02 | 1994-05-24 | Ishida Co Ltd | Delivery control device for long web |
| US5434111A (en) * | 1992-04-10 | 1995-07-18 | Schott Glaswerke | Lead- and barium-free crystal glass having high optical transmission |
| CN1160687A (en) * | 1996-03-30 | 1997-10-01 | 大连理工大学 | Fast-microcrystallized devitrified agrellite glass and its production process |
| CN101805128A (en) * | 2010-04-20 | 2010-08-18 | 香港福山实业有限公司 | Jade-type glass-ceramic and preparation method thereof |
-
2013
- 2013-12-06 CN CN201310655639.9A patent/CN103663971A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386162A (en) * | 1981-10-05 | 1983-05-31 | Corning Glass Works | Alkali metal, calcium fluorosilicate glass-ceramic articles |
| DE4125698C1 (en) * | 1991-08-02 | 1992-11-26 | Schott Glaswerke, 6500 Mainz, De | Glass ceramic material for replacing granite or marble in decorative applications - contains silica, alumina, calcia, magnesia, zirconia, barium oxide, potassium oxide, sodium oxide and fluorine |
| US5434111A (en) * | 1992-04-10 | 1995-07-18 | Schott Glaswerke | Lead- and barium-free crystal glass having high optical transmission |
| JPH06144665A (en) * | 1992-11-02 | 1994-05-24 | Ishida Co Ltd | Delivery control device for long web |
| CN1160687A (en) * | 1996-03-30 | 1997-10-01 | 大连理工大学 | Fast-microcrystallized devitrified agrellite glass and its production process |
| CN101805128A (en) * | 2010-04-20 | 2010-08-18 | 香港福山实业有限公司 | Jade-type glass-ceramic and preparation method thereof |
Non-Patent Citations (8)
| Title |
|---|
| 戴金辉等主编: "《无机非金属材料工学》", 31 August 2012, 哈尔滨工业大学出版社 * |
| 田英良等主编: "《新编玻璃工艺学》", 30 June 2009, 中国轻工业出版社 * |
| 程金树等: "《K2O对 R2O-CaO-SiO2-F微晶玻璃析晶的影响》", 《武汉理工大学学报》 * |
| 程金树等: "《氟对R2O-CaO-SiO2-F 系统微晶玻璃析晶及性能》", 《 中国硅酸盐学会玻璃分会2009年全国玻璃科学技术年会论文集 》 * |
| 程金树等: "《氧化钙对R2O-CaO-SiO2-F系统微晶玻璃析晶和性能的影响》", 《中国硅酸盐学会玻璃分会2009年全国玻璃科学技术年会论文集》 * |
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Application publication date: 20140326 |