Glass having pure glass phase, preparation method and uses thereof

A glass, glass powder technology, applied in the field of biomaterials and dental restoration materials

Active Publication Date: 2018-10-16
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

US2012 / 0148750A1 reported a pure glass phase veneer porcelain, but its thermal expansion coefficient is only 6~9×10 -6 ℃ -1
US6187701B1 also reported a pure glass-phase decorative porcelain, but its coefficient of thermal expansion is lower than 6×10 -6 ℃ -1

Method used

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  • Glass having pure glass phase, preparation method and uses thereof
  • Glass having pure glass phase, preparation method and uses thereof
  • Glass having pure glass phase, preparation method and uses thereof

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Embodiment 1～9

[0070] According to the weight percentage of each component of glass described in each embodiment listed in Table 2, take by weighing analytically pure SiO 2 、Al 2 o 3 、K 2CO 3 、Na 2 CO 3 and optional additive raw materials, after being fully mixed with a planetary ball mill, take out and dry; put the dried powder in a platinum alloy crucible, place it in a box-type resistance furnace, and raise the temperature to 1400 °C under an air atmosphere ℃~1700℃, constant temperature for 1h~5h, melting to obtain glass, that is, decorative porcelain glass, and then pouring water quenching at 1400℃~1600℃ to obtain glass blocks. Then, the glass block is ball milled and pulverized under the condition of 200r / min~400r / min, every 5 minutes of ball milling, and a 300-mesh standard sieve is used to sieve once, and the sieve through the 300-mesh standard sieve is the glass powder, that is, the decoration Face porcelain glass powder.

[0071] In the embodiments of the present invention, w...

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Abstract

The present invention relates to a glass having a pure glass phase, a preparation method and uses thereof, wherein the glass is a veneering porcelain glass, has a single glass phase, does not containany crystals, and comprises, by weight, 65-75% of SiO2, 5-15% of Al2O3, 5-15% of K2O, 5-15% of Na2O, 0-5% of an additive. According to the present invention, by controlling the ratio of SiO2 to Al2O3to K2O to Na2O to the additive, the glass having the pure glass phase and having a thermal expansion coefficient (20-400 DEG C) of 9.5*10<-6>-10.5*10<-6> DEG C<-1> and a porcelain baking temperature of 850-950 DEGC is obtained, does not contain leucite and other crystal phases, and can be used as the dental veneering porcelain of the core porcelain material with the thermal expansion coefficient (20-400 DEG C) of 10.0*10<-6>-11.5*10<-6> DEG C<-1>.

Description

technical field [0001] The invention belongs to the field of biological materials, and relates to a pure glass phase glass, its preparation method and application, in particular to a pure glass phase decorative porcelain glass, its preparation method and its application in the field of dental restoration materials. Background technique [0002] When there is a defect in a person's tooth, it is necessary to prepare an artificial crown to restore the function and appearance of the tooth. Artificial dental crowns are usually composed of core porcelain and veneering porcelain. Dental technicians complete the production of artificial dental crowns by baking a layer of veneering porcelain on the core porcelain material. Core porcelain provides mechanical properties, while veneering porcelain provides aesthetic properties. . The materials used as nuclear porcelain usually include materials such as gold, palladium gold, cobalt-chromium alloy, lithium disilicate glass-ceramic, zirco...

Claims

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Application Information

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IPC IPC(8): C03C8/02C03C8/04
CPCC03C8/02C03C8/04C03C2205/06
Inventor 彭练白杨朱庆山
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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