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Low-temperature sintered bioglass ceramic material for dental department, and preparation method of bioglass ceramic material

A technology of biological glass and ceramic materials, applied in medical science, tissue regeneration, prosthesis, etc., can solve the problems of high equipment requirements, high sintering temperature, and difficult processing technology, and achieve simple preparation process and lower sintering temperature , The effect of reducing the difficulty of processing technology

Inactive Publication Date: 2017-07-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sintering temperature of the fluoroapatite bio-glass-ceramics currently prepared is generally high, the processing technology is difficult, and the requirements for the equipment used are high. Performance and biological properties still need to be improved

Method used

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  • Low-temperature sintered bioglass ceramic material for dental department, and preparation method of bioglass ceramic material
  • Low-temperature sintered bioglass ceramic material for dental department, and preparation method of bioglass ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Calculate the consumption of raw material according to following weight ratio, 58.5%SiO2, 4.3%Li2O, 12.2%K2O, 10.6%ZnO, 3.5%P2O5, 6.1%CaO, 0.5%F, 0.9%NaO, 1.3%MgO, 0.3%Al2O3, 1.0% ZrO, 0.8% CeO2.

[0028] The raw materials are weighed according to the formula, put into a corundum ball mill jar, and mixed evenly by ball milling for 2 hours, and then dried in a drying oven at a temperature of 80°C; the raw materials are put into a crucible, the heating rate is 15K / min, and the temperature is kept at 1550°C 1.5 hours; after the holding time is up, use the crucible tongs to clamp the crucible, pour the molten glass into water at room temperature to form glass powder; sieve the powder to make the particle size less than 90um, and then press the uniformly mixed powder under pressure 100-200Mpa. Using the isothermal heat treatment system, the green body was put into a vacuum sintering furnace with a heating rate of 50°C / min, kept at 740°C for 1 hour, and cooled with the furna...

Embodiment 2

[0034]Calculate the consumption of raw material according to following weight ratio, 56.5%SiO2, 4.1%Li2O, 12.9%K2O, 10.0%ZnO, 3.3%P2O5, 5.8%CaO, 0.4%F, 3.2%Al2O3, 3.8%ZrO.

[0035] The raw materials are weighed according to the formula, put into a corundum ball mill jar, and ball milled for 2 hours to mix evenly, and then dried in a drying oven at a temperature of 80°C; the raw materials are put into a crucible, the heating rate is 15K / min, and the temperature is kept at 1400°C 1.5h; after the holding time is up, use the crucible tongs to clamp the crucible, pour the molten glass into water at room temperature to form glass powder; sieve the powder to make the particle size less than 90um, and then press the uniformly mixed powder with a pressure of 100~200Mpa. Using a step heat treatment system, put the green body into a vacuum sintering furnace with a heating rate of 40°C / min, keep it at 450°C for 1h, then raise the temperature and keep it at 750°C for 2h, and then cool it w...

Embodiment 3

[0041] The preparation method of the dental biological glass-ceramic material capable of low-temperature sintering comprises the following steps:

[0042] (1) Weigh the raw materials according to the formula requirements;

[0043] (2) Put the raw materials into a corundum ball mill jar, ball mill for 1 hour and mix evenly, and then dry at a temperature of 60° C. in a drying oven;

[0044] (3) Put the raw materials into the crucible, the heating rate is 10K / min, and keep the temperature at 1400°C for 3h;

[0045] (4) Pour the molten glass into water at room temperature to form glass particles;

[0046] (5) Then sieve the particles, and the size of the powder after sieving should be kept between 1 and 450um;

[0047] (6) Press the uniformly mixed powder into a green body with a pressure of 100-200Mpa;

[0048] (7) Using the isothermal heat treatment method, put the green body into a vacuum sintering furnace at a heating rate of 40°C / min, keep it at 740°C for 1 hour, and cool ...

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Abstract

The invention relates to a low-temperature sintered bioglass ceramic material for the dental department, and a preparation method of the bioglass ceramic material, belonging to the technical field of ceramic materials. In order to overcome the difficulty of Ca-P dental glass ceramics in the aspect of sintering temperature, the invention provides glass ceramics which can be prepared at lower temperature, has high chemical stability, low expansion coefficient and excellent mechanical property and biological performance, and takes apatite as a principal crystalline phase; the low-temperature sintered bioglass ceramic material for the dental department has a lower linear expansion coefficient, and the acid corrosion resistance of the material can be improved.

Description

technical field [0001] The invention relates to a dental biological glass-ceramic material capable of low-temperature sintering and a preparation method thereof, belonging to the technical field of ceramic materials. Background technique [0002] Glass ceramics is a polycrystalline solid in which the glass phase and crystal phase are uniformly distributed by controlling the crystallization of the matrix glass. Through the heat treatment process, the crystal phase is precipitated. The ceramic material has a certain strength and toughness, and at the same time contains a certain amount of glass phase, which makes it have better light transmission performance, and can better simulate and restore the color and light transmission of natural teeth. Fluorapatite crystals are similar to hydroxyapatite crystals in natural tooth enamel and are excellent dental materials. The progress made in the research of biological glass ceramics in recent years mainly focuses on improving the bio...

Claims

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Application Information

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IPC IPC(8): C03C10/02C03C10/16A61L27/10
CPCC03C10/0009A61L27/105A61L2430/12C03C10/16
Inventor 付坤王守仁王高琦王砚军王立虎王鑫松张晓东薛传艺
Owner UNIV OF JINAN
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