CN104944788A - Glass powder for all-porcelain tooth baked porcelain and preparation method thereof - Google Patents
Glass powder for all-porcelain tooth baked porcelain and preparation method thereof Download PDFInfo
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- CN104944788A CN104944788A CN201410131980.9A CN201410131980A CN104944788A CN 104944788 A CN104944788 A CN 104944788A CN 201410131980 A CN201410131980 A CN 201410131980A CN 104944788 A CN104944788 A CN 104944788A
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Abstract
The invention provides a glass powder for all-porcelain tooth baked porcelain and a preparation method thereof. The glass powder is composed of the following components in percentage by mass: 2-5% of Y2O3, 65-70% of SiO2, 10-16% of Al2O3, 12-20% of B2O3 and 1-5% of Li2O. The preparation method comprises the following steps: sufficiently and uniformly mixing the materials, heating from room temperature to 650-700 DEG C, keeping the temperature for 20 minutes, heating to 1350-1450 DEG C, keeping the temperature for 120-180 minutes, sufficiently melting the raw materials into a liquid, quenching with deionized water into glass granules, and carrying out ball milling on the glass granules until the granularity is 3-5 mu m, thereby obtaining the glass powder for all-porcelain tooth baked porcelain. The glass powder is free of K2O, Na2O and the like, and has the advantages of high transparency, favorable bending resistance, favorable acid resistance and the like. The softening point of the glass powder is 570-600 DEG C, the application temperature is 860-950 DEG C, and the thermal expansion coefficient is (8.8-9.2)*10<-6>/DEG C.
Description
Technical field
The present invention relates to a kind of full porcelain tooth porcelain glass powder and preparation method thereof, the glass powder prepared has the advantages such as transparency is high, fracture resistance good, acid resistance is good, is mainly used in dental all-ceramics and repairs field.
Technical background
Full porcelain tooth material from last century the eighties started since clinical application, develop into laminated composite materials from initial monolayer material, develop into oxide ceramics from glass-ceramic; Complete processing is the precision cutting technique of computer aided design (CAD) and processing from porcelain, cast growth.Present all-ceramic prosthesis has possessed good marginal and good mechanical property, can meet the Dental Erosion requirement of the overwhelming majority.The favor of All-ceramic material extremely Oral Repair doctor and extensive patients according to its outstanding aesthetic and good biocompatibility, becomes most popular dentistry repair materials attractive in appearance gradually.
The main flow of All-ceramic material is lamination composite ceramics, namely be made up of substrate porcelain and decorations porcelain two portions, substrate porcelain makes hat in full porcelain and meets the requirement of strength of dummy, there is provided good marginal by suitable processing technology, outer field decorations porcelain is in order to recover anatomic form and the aesthetic of dummy.
The structure of decorations enamel coating and mechanical property directly affect the intensity of whole all-ceramic prosthesis.The matching of the physical and chemical performance between material directly affects interface quality, is related to stability and the work-ing life of all-ceramic prosthesis.
Full porcelain tooth glass powder be a kind of white glass powder through plastic-coated sintering after formed on ceramic false tooth layer of transparent glass modify face.This vitreum is the outermost material of ceramic false tooth, and the rough surface of ceramic tooth, protection dentin layer and adamantine layer are modified in its main effect; Ceramic tooth is made to demonstrate gradation sense, access expansion tooth true to nature more attractive in appearance.Its performance directly affects the quality of ceramic tooth, is to make the indispensable material of ceramic tooth.
In the tooth modification glass frit component that current domestic artificial tooth factory generally uses, K, Na content is high, cause the chemical stability of glass powder and acid resistance poor, thus exploitation without K, Na low temperature glass facing glaze, there is the wide market space.
Summary of the invention
The present invention is by using Y
2o
3substitute K
2o and Na
2o provides a kind of full porcelain tooth porcelain glass powder and preparation method thereof.This goal of the invention be to overcome current product transparency low, easily to jump the shortcoming such as porcelain, acid resistance difference.
The present invention is achieved through the following technical solutions:
The invention provides a kind of full porcelain tooth porcelain glass powder, comprise SiO
2, Al
2o
3, B
2o
3etc. component, it is characterized in that glass powder also comprises Y
2o
3li
2the fluxing component such as O, each constituent mass degree is:
The object of the present invention is to provide a kind of full porcelain tooth porcelain glass powder and preparation method thereof,
Comprise the following steps:
(1) calculate by mass percentage and take each raw material, preparation compound;
(2) by mixed material heating melting, its melting technology is insulation 20 minutes behind room temperature to 650 ~ 700 DEG C, reheats to 1350 ~ 1450 DEG C, is incubated 120 ~ 180 minutes, to ensure the abundant melting of each component and reaction;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) the shrend frit planetary ball mill after oven dry is milled to the glass powder that particle diameter is 3 ~ 5 μm.
Y
2o
3introducing, both improve the reactive behavior of raw material; The fracture resistance of remarkable reinforcing glass body again.Meanwhile, Y
2o
3there is obvious cooling function, can K be replaced
2o and Na
2o.K
2o and Na
2o has the performance reducing firing temperature, but a large amount of membership that adds causes glass powder acid resistance to reduce.Use Y
2o
3replace K
2o and Na
2o, while the Vitrea thermal expansivity of control keeps mating with substrate porcelain, significantly can promote the acid resistance of glass powder.
Li
2the introducing of O can reduce the melt temperature of glaze, viscosity and thermal expansivity.Meanwhile, acidproof, wear resistance and the glossiness of glass can also be improved.
The invention has the advantages that: the rare-earth oxidation yttrium adding different content, regulates and modification existing glass system, make glass powder have good fracture resistance, have good matching with body material.Use Y
2o
3substitute K
2o and Na
2after O, significantly promote Vitrea acid resistance.Full porcelain tooth glass powder of the present invention sinters afterwards and all-ceramic prosthesis base material has good matching and stability.This glass powder transparency is high, acid resistance good, fracture resistance good, sintering range is wide and preparation technology simple, can be widely used in the decorations porcelain field of full porcelain tooth, import substitutes.
Embodiment
Embodiment 1
(1) get the raw materials ready by following quality, fully mix:
(2) raw material that step (1) mixes is placed in the Cinker clew furnace of room temperature, is incubated 20 minutes after being warming up to 650 DEG C, reheats to 1400 DEG C, be incubated 120 minutes, make raw material fully be melt into glass metal;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) step (4) gained glass particle is leached rear planetary ball mill and be milled to the glass powder that grain diameter is 3 ~ 5 μm, obtain full porcelain tooth glass powder;
(6) softening temperature of this glass powder is 581 DEG C after tested, and thermal expansivity is 8.8 × 10
-6/ DEG C.
Embodiment 2
(1) get the raw materials ready by following quality, fully mix:
(2) raw material that step (1) mixes is placed in room temperature Cinker clew furnace, is incubated 20 minutes after being warming up to 650 DEG C, reheats to 1420 DEG C, be incubated 120 minutes, make raw material fully be melt into glass metal;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) step (4) gained glass particle is leached rear planetary ball mill and be milled to the glass powder that grain diameter is 3 ~ 5 μm, obtain full porcelain tooth glass powder;
(6) softening temperature of this glass powder is 587 DEG C after tested, and thermal expansivity is 8.9 × 10
-6/ DEG C.
Embodiment 3
(1) get the raw materials ready by following quality, fully mix:
(2) raw material that step (1) mixes is placed in room temperature Cinker clew furnace, is incubated 20 minutes after being warming up to 650 DEG C, reheats to 1450 DEG C, be incubated 150 minutes, make raw material fully be melt into glass metal;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) step (4) gained glass particle is leached rear planetary ball mill and be milled to the glass powder that grain diameter is 3 ~ 5 μm, obtain full porcelain tooth glass powder;
(6) softening temperature of this glass powder is 595 DEG C after tested, and thermal expansivity is 9.0 × 10
-6/ DEG C.
Embodiment 4
(1) get the raw materials ready by following quality, fully mix:
(2) by the raw material that step (1) mixes, be placed in room temperature Cinker clew furnace, be incubated 20 minutes after being warming up to 650 DEG C, be heated to 1450 DEG C, be incubated 180 minutes, make raw material fully be melt into glass metal;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) step (4) gained glass particle is leached rear planetary ball mill and be milled to the glass powder that grain diameter is 3 ~ 5 μm, obtain full porcelain tooth glass powder;
(6) softening temperature of this glass powder is 578 DEG C after tested, and thermal expansivity is 9.1 × 10
-6/ DEG C.
Above-mentioned example is only one of enforcement of the present invention; the present invention is not limited to above-mentioned specific embodiment; those skilled in the art also can do numerous modifications and variations on the basis of existing technology, without departing from the spirit of the present invention, all in the claimed scope of the present invention.
Claims (4)
1. a full porcelain tooth porcelain glass powder, comprises SiO
2, Al
2o
3, B
2o
3etc. component, it is characterized in that glass powder also comprises Y
2o
3, Li
2the fluxing component such as O, each constituent mass degree is:
。
2. a full porcelain tooth porcelain glass powder preparation method, comprises the following steps:
(1) calculate by mass percentage and take each raw material, preparation compound;
(2) by mixed material heating melting, its melting technology is insulation 20 minutes behind room temperature to 650 ~ 700 DEG C, reheats to 1350 ~ 1450 DEG C, is incubated 120 ~ 180 minutes, to ensure the abundant melting of each component and reaction;
(3) pour step (2) gained glass metal in deionized water shrend, glass metal forms glass small-particle through sharply lowering the temperature;
(4) 100 ~ 150 DEG C of insulations 30 minutes, the frit after shrend is dried;
(5) the shrend frit planetary ball mill after oven dry is milled to the glass powder that particle diameter is 3 ~ 5 μm.
3. one according to claim 1 full porcelain tooth porcelain glass powder, is characterized in that described rare-earth oxidation yttrium is chemical pure.
4. one according to claim 1 full porcelain tooth porcelain glass powder, is characterized in that described Lithium Oxide 98min is chemical pure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131980.9A CN104944788B (en) | 2014-03-30 | 2014-03-30 | A kind of full porcelain tooth porcelain glass dust and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131980.9A CN104944788B (en) | 2014-03-30 | 2014-03-30 | A kind of full porcelain tooth porcelain glass dust and preparation method thereof |
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| CN104944788B CN104944788B (en) | 2017-09-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6342302B1 (en) * | 1998-11-13 | 2002-01-29 | Degussa Ag | Ceramic dental restoration |
| CN101094818A (en) * | 2004-05-29 | 2007-12-26 | 肖特股份公司 | Nano glass powder and use thereof, particularly multicomponent glass powder with a mean particle size of less than 1 [mu]m |
| WO2013053865A2 (en) * | 2011-10-14 | 2013-04-18 | Ivoclar Vivadent Ag | Lithium silicate glass ceramic and lithium silicate glass comprising a trivalent metal oxide |
-
2014
- 2014-03-30 CN CN201410131980.9A patent/CN104944788B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6342302B1 (en) * | 1998-11-13 | 2002-01-29 | Degussa Ag | Ceramic dental restoration |
| CN101094818A (en) * | 2004-05-29 | 2007-12-26 | 肖特股份公司 | Nano glass powder and use thereof, particularly multicomponent glass powder with a mean particle size of less than 1 [mu]m |
| WO2013053865A2 (en) * | 2011-10-14 | 2013-04-18 | Ivoclar Vivadent Ag | Lithium silicate glass ceramic and lithium silicate glass comprising a trivalent metal oxide |
Non-Patent Citations (1)
| Title |
|---|
| 陆小荣: "《陶瓷工艺学》", 31 January 2005 * |
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Inventor after: Ouyang Xueqiong, Wang Yadong, Hou Jinzhang, Guan Haibin, Pang Ruijun Inventor after: Wang Yadong Inventor after: Hou Jinzhang Inventor after: Guan Haibin Inventor after: Pang Ruijun Inventor before: Wang Yadong Inventor before: Hou Jinzhang Inventor before: Wang Yadong, Hou Jinzhang, Ouyang Xueqiong, Guan Haibin, Pang Ruijun Inventor before: Guan Haibin Inventor before: Pang Ruijun |