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Composite ceramic material, and preparation method and application thereof

A technology of composite ceramics and press molding, which is applied in the field of materials, can solve the problems of unreliable process, complicated process, high hardness and melting point, etc., and achieve the effect of corrosion resistance, simple process and high elastic processing

Active Publication Date: 2017-06-13
哈工宁伯医疗科技泰州有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the strength (such as bending strength and compressive strength), aesthetics and economy of commercialized dental materials are still far from the requirements of clinical dentists and patients.
[0005] Zirconium dioxide is used as a dental material due to its good chemical stability and oxidation resistance, but it has a high relative density (5.89), hardness (7.5) and high melting point (2700°C).
[0008] To sum up, the existing problems of the dental composite ceramic material and its manufacturing method made by using zirconia include but not limited to: (1) the strength of the obtained material such as bending strength or compressive strength is insufficient; (2) the obtained The elastic modulus of the material deviates too much from the elastic modulus of the material or tissue in the use environment; (3) the hardness is too large, which makes the machinability poor; (4) the process is unreliable, in the manufacturing process, especially in the high temperature sintering process The medium sintered body is deformed or cracked, especially in the case of manufacturing large samples; (5) The raw material formula and / or process are unreasonable, and the space for further optimizing the performance of the material is limited; (6) The particle size of the original powder is not properly matched, which affects the molding , pore shape, mechanical strength and aesthetics, etc.; (7) Poor control of the sintering temperature, such as insufficient sintering resulting in insufficient strength, or excessive sintering resulting in poor porosity and pore connectivity of the sintered rough, which makes the impregnation of the coupling agent or resin Vacuum or pressurized equipment needs to be provided during the infiltration process, which complicates the process and increases the manufacturing cost

Method used

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  • Composite ceramic material, and preparation method and application thereof
  • Composite ceramic material, and preparation method and application thereof
  • Composite ceramic material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] (1) prepare slurry, D 50 A powder of about 2 microns is added in proportion to zirconia: silicon dioxide: aluminum oxide: boric acid: calcium oxide: zinc oxide: titanium dioxide = 50:25:15:4:2:2:2 into ethanol, Add 0.2wt% polyvinyl butyral as a binder, and mix according to ball milling to obtain a uniformly mixed slurry;

[0067] (2) Pour the mixed slurry into a tray, dry at 120°C, and then pass the dried raw material through a 60-mesh sieve to obtain a mixed powder;

[0068] (3) The mixed powder is compacted under a pressure of 12MPa, and then subjected to cold isostatic pressing under a pressure of 280MPa;

[0069] (4) The ceramic green body was placed in a muffle furnace, sintered at 1050° C., and kept for 3 hours. At this time, the bending strength of the ceramic green body was measured to be 38.6 MPa, and the porosity was 38.2%.

[0070] (5) Place the ceramic green body in a 5% silane coupling agent (γ-methacryloxypropyltrimethoxysilane) solution, soak for 3 hour...

Embodiment 2

[0077] (1) prepare slurry, D 50 A powder of about 50 microns is added to ethanol at a ratio of zirconia: silicon dioxide = 1:1, and 0.2wt% polyvinyl butyral is added as a binder, and mixed according to the method of ball milling to obtain a mixed Uniform slurry;

[0078] (2) Pour the mixed slurry into a tray, dry at 120°C, and then pass the dried raw material through a 60-mesh sieve to obtain a mixed powder;

[0079] (3) The mixed powder is compacted under a pressure of 12MPa, and then subjected to cold isostatic pressing under a pressure of 280MPa;

[0080] (4) The ceramic green body was placed in a muffle furnace, sintered at 1200° C., and kept for 2 hours. At this time, the bending strength of the ceramic green body was measured to be 37 MPa, and the porosity was 41.2%.

[0081] (5) Place the ceramic green body in a 5% silane coupling agent (vinyl tri-tert-butyl peroxysilane) solution, soak it for 3 hours, then take it out and dry it in the air, and dry it at 120°C for 30...

Embodiment 3

[0086] (1) prepare slurry, D 50 A powder of about 20 microns is added to ethanol at a ratio of zirconia:silicon dioxide = 1:1, and 0.2wt% polyvinyl butyral is added as a binder, and mixed by ball milling to obtain a mixed Uniform slurry;

[0087] (2) Pour the mixed slurry into a tray, dry at 120°C, and then pass the dried raw material through a 60-mesh sieve to obtain a mixed powder;

[0088] (3) The mixed powder is compacted under a pressure of 12MPa, and then subjected to cold isostatic pressing under a pressure of 280MPa;

[0089] (4) The ceramic green body was placed in a muffle furnace, sintered at 600° C., and kept for 2 hours. At this time, the bending strength of the ceramic green body was measured to be 30 MPa, and the porosity was 45%.

[0090] (5) Place the ceramic body in a 5% silane coupling agent (γ-glycidoxytrimethylsilane) solution, soak it for 2 hours, then take it out and dry it in the air, and dry it at 120°C for 30 minutes to obtain the surface treatment ...

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Abstract

The invention relates to a composite ceramic material, and a preparation method and application thereof. Specifically, the invention relates to a method for preparing the composite ceramic material. The method comprises the following steps of compression molding, high-temperature sintering, surface treatment, osmotic treatment and resin recombination. The invention also relates to the composite ceramic material prepared by the method and the application of the composite ceramic material in preparing a repairing material for tooth bodies or other hard tissues. The method disclosed by the invention has the advantages that the technology is simple, the operation is easy, and the like; the composite ceramic material prepared by the method has the advantages that the strength is high, the machinability is good, the elastic modulus and the hardness are similar to the tooth bodies, and the like, and is particularly suitable for being used as a repairing material of the tooth bodies, for example, the composite ceramic material can be used for preparing a dental crown, a veneer, an inlay and an onlay and can also be used for repairing other hard tissues.

Description

technical field [0001] The invention relates to the field of materials, in particular to a composite ceramic material and its manufacturing method and application. Background technique [0002] In recent years, with the improvement of people's living standards, the requirements for their own health and quality of life have gradually increased, and the demand for oral restoration materials has also gradually increased, and this demand has increased with the aging of the population. Dental materials, as a basic subject closely related to clinical restoration and treatment, are playing an increasingly important role in clinical stomatology. [0003] According to the estimate of DENSPLY, the global dental material market size in 2012 was 10 billion US dollars, and it is estimated that by 2030, China's dental material market will reach 12 billion yuan. However, such a huge market is basically occupied by products from Germany, Italy, Japan, the United States, South Korea, the Ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/49C04B41/89C04B38/06A61K6/02A61K6/00A61K6/083A61L27/10A61L27/16
CPCA61K6/60A61K6/71A61K6/76A61K6/818A61K6/887A61L27/10A61L27/105A61L27/16C04B35/48C04B35/49C04B38/067C04B41/009C04B41/52C04B41/89C04B2235/3217C04B2235/3225C04B2235/3229C04B2235/3232C04B2235/3272C04B2235/3284C04B2235/3298C04B2235/3409C04B2235/3418C04B2235/442C04B2235/444C04B2235/96C04B41/4905C04B41/4857C04B38/0074C08L33/02C08L33/12
Inventor 王锋宁聪琴
Owner 哈工宁伯医疗科技泰州有限公司
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