CN103641317B - A kind of Jade-like microcrystalline glass - Google Patents
A kind of Jade-like microcrystalline glass Download PDFInfo
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- CN103641317B CN103641317B CN201310665645.2A CN201310665645A CN103641317B CN 103641317 B CN103641317 B CN 103641317B CN 201310665645 A CN201310665645 A CN 201310665645A CN 103641317 B CN103641317 B CN 103641317B
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Abstract
The invention provides a kind of Jade-like microcrystalline glass, include following composition by weight percentage: 50%��silicon dioxide < 56%, 0��aluminium oxide < 1%, 18% < calcium oxide��25%, 1%��boron oxide��2%, 8% < potassium oxide��10%, 0 < zinc oxide��4%, 2% < fluorine��5%, surplus is sodium oxide. Jade-like microcrystalline glass perception provided by the invention presents translucent beautiful matter shape, has moist degree and the waxiness sense of natural jade, and good toughness, intensity are high, it is easy to be processed further molding, can be widely used in the fields such as the succedaneum of high-grade stone.
Description
Technical field
The present invention relates to glass-ceramic field, particularly to a kind of Jade-like microcrystalline glass.
Background technology
Along with Chinese national economy stablizes sustainable development, people's living standard improves therewith, demand expanding day to high-grade material, particularly that the substitute products demand of radiationless high-grade stone is more urgent, but the substitute products fragility of domestic high-grade stone is big, being not easy machine-shaping, cause that a lot of high-grade stone needs are from external import, cost significantly increases.
Devitrified glass is also called glass-ceramic, has glass and the double grading of pottery, and devitrified glass is made up of crystal, and its atomic arrangement is regular, and therefore, devitrified glass is higher and stronger than glass toughness than the brightness of pottery. Triple advantages of glass, pottery and lithotome concentrated by devitrified glass, it is better than lithotome and pottery, can be used for building curtain wall and indoor high-grade decoration, also can do structural material mechanically, insulant on electronics, electrician, the heat-resisting row vessel of the baseboard material of large scale integrated circuit, microwave oven, chemical industry and anti-corrosion material and mine high-abrasive material etc., become the substitute products of desirable high-grade stone.
Existing devitrified glass also exists that tone is single, do not have texture, apparent porosity high and fragility is big, it is not easy to the shortcomings such as machine-shaping, causes that devitrified glass utilizes space little, and market share is low, seriously inhibits the development of devitrified glass industry.
Summary of the invention
The technical problem to be solved in the present invention is in that the Jade-like microcrystalline glass providing a kind of good toughness, intensity high.
For solving above-mentioned technical problem, Jade-like microcrystalline glass provided by the invention includes following composition by weight percentage: 50%��silicon dioxide < 56%, 0��aluminium oxide < 1%, 18% < calcium oxide��25%, 1%��boron oxide��2%, 8% < potassium oxide��10%, 0 < zinc oxide��4%, 2% < fluorine��5%, surplus is sodium oxide.
Defined below by weight percentage at each composition of Jade-like microcrystalline glass provided by the invention:
Silicon dioxide gives the good chemical stability of devitrified glass and heat stability, the intensity of devitrified glass can be improved, reduce the coefficient of expansion of devitrified glass, but along with content increases, the viscosity that can cause vitreous humour increases, the glass melting temperature of devitrified glass raises, and therefore the content of silicon dioxide is set as: 50%��silicon dioxide < 56%.
Aluminium oxide can reduce the tendency towards devitrification of devitrified glass, improve chemical stability and mechanical strength and hardness, improve heat stability, reduce electrical insulating property, but along with the lifting of alumina content, can cause that devitrified glass surface produces striped, and the viscosity of vitreous humour can be improved, making fusing and clarification that difficulty to occur, increase tendency towards devitrification on the contrary, therefore the content of aluminium oxide is set as: 0��aluminium oxide < 1%.
Calcium oxide can reduce the high temperature viscosity of vitreous humour, promotes fusing and the clarification of vitreous humour, increases the chemical stability of devitrified glass, mechanical strength and hardness, and therefore the content of calcium oxide is set as: 18% < calcium oxide��25%.
Boron oxide can reduce the thermal coefficient of expansion of devitrified glass, improves heat stability and the high-temperature viscosity of cooling vitreous humour, and therefore the content of boron oxide is set as: 1%��boron oxide��2%.
Potassium oxide is good cosolvent, can improve the glossiness of devitrified glass, promotes fusing and the clarification of vitreous humour, moreover it is possible to reducing the viscosity of vitreous humour, therefore the content of potassium oxide is set as: 8% < potassium oxide��10%.
Zinc oxide can improve the chemical stability of devitrified glass, reduces the thermal coefficient of expansion of devitrified glass, but along with the increase of zinc oxide content, can increase ceramics tendency, and therefore the content of zinc oxide is set as: 0 < zinc oxide��4%.
Fluorine is a kind of excellent opacifiers, and when Oil repellent is too high, the chemical stability of devitrified glass reduces, and easy devitrification, therefore the content of fluorine is set as: 2% < fluorine��5%.
Sodium oxide can reduce the viscosity of vitreous humour, promotes fusing and the clarification of vitreous humour, and therefore the remaining composition of devitrified glass is set as sodium oxide.
The Jade-like microcrystalline glass of the present invention is not introduced into improving the magnesium oxide of annealing temperature, the composition proportion of its low silicon high calcium height potassium can effectively reduce the apparent porosity of Jade-like microcrystalline glass, improve impact flexibility and anti-folding, comprcssive strength, strengthen machine-shaping property, the perception of this Jade-like microcrystalline glass presents translucent beautiful matter shape, has moist degree and the waxiness sense of natural jade.
Preferably, the principal crystalline phase of the Jade-like microcrystalline glass of the present invention is Na4��3K2��3Ca5(Si12O30)F4, belong to SiO2-CaO-R2O-F P series glass, this crystalline phase is lath-shaped, substantially increases toughness and the bending and compressive strength of Jade-like microcrystalline glass, and is prone to processing cutting.
Preferably, the impact flexibility of described Jade-like microcrystalline glass is 5.0kj/cm3��5.6kj/cm3��
Preferably, the Mohs' hardness of described Jade-like microcrystalline glass is 6.5��7.5.
Preferably, the rupture strength of described Jade-like microcrystalline glass is 65MPa��80MPa.
Preferably, the comprcssive strength of described Jade-like microcrystalline glass is 600MPa��800MPa.
Preferably, the visible light transmissivity of described Jade-like microcrystalline glass is 30%��40%.
Jade-like microcrystalline glass perception provided by the invention presents translucent beautiful matter shape, has moist degree and the waxiness sense of natural jade, and good toughness, intensity are high, it is easy to be processed further molding, can be widely used in the fields such as the succedaneum of high-grade stone.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of invention, feature and advantage to become apparent from, below the specific embodiment of the present invention is described in detail.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but the present invention can also adopt other to be different from alternate manner described here to be implemented, those skilled in the art can do similar popularization when without prejudice to intension of the present invention, and therefore the present invention is not by the restriction of following public specific embodiment.
Table 1 is the performance parameter table of Jade-like microcrystalline glass under heterogeneity forms.
When knowing concrete component content, the Jade-like microcrystalline glass of the present invention can be prepared by methods known in the art, it is preferable that be prepared as follows:
1, one or more in selection quartz sand, fluorite, aluminium oxide, calcite, soda, potassium carbonate, sodium nitrate, boric acid, zinc oxide provide the one-tenth of Jade-like microcrystalline glass to be grouped into as raw material, the consumption of raw material is calculated by the composition proportion of embodiment in table 1, basestocks it is mixed to get after weighing, to those skilled in the art, preparation raw material used by Jade-like microcrystalline glass is not limited only to raw material disclosed above, also the optional conventional raw material such as potash feldspar or limestone;
2, basestocks is melted at 1400 DEG C��1500 DEG C 12h��16h, after clarification, obtain vitreous humour;
3, put in mould after vitreous humour is made the granule of 2mm��5mm;
4, will be equipped with the mould of granule after 8h��12h is warming up to 1000 DEG C��1080 DEG C, is incubated 2h��4h, be incubated 2h��4h after being cooled to 800 DEG C��860 DEG C and carry out Crystallizing treatment, more at the uniform velocity annealing prepares Jade-like microcrystalline glass.
As shown in table 1, the Jade-like microcrystalline glass of the present invention has higher anti-folding and comprcssive strength, and hardness is high, and impact flexibility is strong, it is seen that light transmission rate is similar with natural jade. Finished product Jade-like microcrystalline glass has moist degree and the waxiness sense of natural jade, can prepare into various sizes of section bar to facilitate processing.
Table 1
Although the present invention is described in conjunction with above example, but the present invention is not limited to above-described embodiment, and it being only limited by the restriction of claims, it easily can be modified and change by those of ordinary skill in the art, but and without departing from the essential idea of the present invention and scope.
Claims (7)
1. a Jade-like microcrystalline glass, it is characterised in that include following composition by weight percentage: silicon dioxide is 50%, aluminium oxide is 0.5%, calcium oxide is 22%, and boron oxide is 1.5%, and potassium oxide is 9.5%, zinc oxide is 2%, and fluorine is 2.5%, and sodium oxide is 12%.
2. Jade-like microcrystalline glass according to claim 1, it is characterised in that the principal crystalline phase of described Jade-like microcrystalline glass is Na4��3K2��3Ca5(Si12O30)F4��
3. Jade-like microcrystalline glass according to claim 1, it is characterised in that the impact flexibility of described Jade-like microcrystalline glass is 5.4kj/cm3��
4. Jade-like microcrystalline glass according to claim 1, it is characterised in that the Mohs' hardness of described Jade-like microcrystalline glass is 6.7.
5. Jade-like microcrystalline glass according to claim 1, it is characterised in that the rupture strength of described Jade-like microcrystalline glass is 68MPa.
6. Jade-like microcrystalline glass according to claim 1, it is characterised in that the comprcssive strength of described Jade-like microcrystalline glass is 650MPa.
7. Jade-like microcrystalline glass according to claim 1, it is characterised in that the visible light transmissivity of described Jade-like microcrystalline glass is 40%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310665645.2A CN103641317B (en) | 2013-12-06 | 2013-12-06 | A kind of Jade-like microcrystalline glass |
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| CN201310665645.2A CN103641317B (en) | 2013-12-06 | 2013-12-06 | A kind of Jade-like microcrystalline glass |
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| CN103641317A CN103641317A (en) | 2014-03-19 |
| CN103641317B true CN103641317B (en) | 2016-06-08 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10031431B4 (en) * | 2000-06-28 | 2008-03-13 | Ivoclar Vivadent Ag | Deep-sintering potassium-zinc-silicate glass and its use |
| CN101186443A (en) * | 2007-12-07 | 2008-05-28 | 霍镰泉 | Building microcrystalline glass and producing method thereof |
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- 2013-12-06 CN CN201310665645.2A patent/CN103641317B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10031431B4 (en) * | 2000-06-28 | 2008-03-13 | Ivoclar Vivadent Ag | Deep-sintering potassium-zinc-silicate glass and its use |
| EP1170261B1 (en) * | 2000-06-28 | 2008-11-05 | Ivoclar Vivadent AG | Potassium-zinc-silicate glass sintering at low temperature |
| CN101186443A (en) * | 2007-12-07 | 2008-05-28 | 霍镰泉 | Building microcrystalline glass and producing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 氟对R2O-CaO-SiO2系统微晶玻璃相变的影响;郑伟宏等;《武汉理工大学学报》;20101130;第32卷(第22期);表1的F2例，第85页第1-8行、11-20行、27-40行，图3 * |
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