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Ceramic slurry and preparation method of zirconium oxide-based composite ceramic

A ceramic slurry, zirconia-based technology, applied in the field of 3D printing, to achieve the effects of low cost, high degree of automation, and improved speed and effect

Inactive Publication Date: 2018-02-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the additive manufacturing technology for the rapid manufacturing of ceramic materials is in the early research stage, and the hardware and software equipment, material system, manufacturing process, etc. still need to be further optimized

Method used

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  • Ceramic slurry and preparation method of zirconium oxide-based composite ceramic
  • Ceramic slurry and preparation method of zirconium oxide-based composite ceramic
  • Ceramic slurry and preparation method of zirconium oxide-based composite ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of ceramic slurry

[0035] 1) Weigh 12 parts of Cr 2 o 3 The powder and 88 parts of 3Y-TZP powder were placed in a ball mill and added with absolute ethanol for mechanical ball milling. After the ball milling, the ethanol was dried and removed to obtain a zirconia composite powder.

[0036] Wherein, the mass ratio of total powder to absolute ethanol is 1:(1.5-2); the ball-to-material ratio is 1:1.5, the ball milling speed is 250rpm, and the ball milling time is 2h.

[0037] 2) Weigh 65 parts of the above-mentioned zirconia composite powder, 35 parts of photocurable resin and 0.5 part of photoinitiator, put them in a ball mill and mix them by ball milling to obtain a zirconia-based ceramic slurry.

[0038] Among them, the photoinitiator is (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide; the photocurable resin is 1,6-ethylene glycol diacrylate (HDDA), aliphatic urethane acrylate ( UDPA), ethyl acetate and PEG-300, the mixing mass ratio is 20:20:30:30...

Embodiment 2

[0048] The difference between this embodiment and embodiment 1 is: the same ratio of Er 2 o 3 Powder instead of Cr 2 o 3 powder, and finally obtain a zirconia-based composite ceramic with a uniform pink overall, and its structure is as follows: Figure 6 shown. The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0050] The difference between this embodiment and Example 1 is that the photocurable resin is a mixture of 1,6-ethylene glycol and acrylate (HDDA), aliphatic urethane acrylate (UDPA) and polyethylene glycol PEG-300. The mass ratio is 60:20:20. The rest are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention belongs to the technical field of 3D (Three Dimensional) printing and in particular relates to ceramic slurry and a preparation method of zirconium dioxide-based composite ceramic. The ceramic slurry provided by the invention is prepared from the following components: 30 to 90 parts of zirconium oxide-based composite powder, 10 to 70 parts of light-cured resin and 0.1 to 5 parts of aphotoinitiator, wherein the zirconium oxide-based composite powder is prepared from the following raw materials: 3Y-TZP powder and rare earth oxide powder; rare earth oxide comprises one or more of Cr2O3, Er2O3, Co3O4, Fe2O3, Pr6O11 and MnO2. By controlling the types and adding amounts of the rare earth oxide in the zirconium oxide-based composite powder, obtained zirconium oxide-based compositeceramic has a uniform pink, red, blue, green or yellow color from a single zirconium white color and can be applied to preparation of zirconium dioxide ceramic with various colors, so that the increasing individualized requirements of people are met.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for preparing ceramic slurry and zirconia-based composite ceramics. Background technique [0002] The most widely used ZrO in the field of dental ceramic materials 2 The base ceramics mainly include: partially stabilized ZrO doped with magnesium 2 , ZrO 2 Toughened alumina ceramics, and 3% mol yttrium oxide (Y 2 o 3 ) stable tetragonal ZrO 2 Polycrystalline ceramics (3Y-TZP). Among them, the flexural strength of 3Y-TZP is as high as 900-1200MPa, and the fracture toughness is as high as 5.9-10Mpa m 1 / 2 , moderate hardness, high physical and chemical stability, and the elastic modulus and color light transmittance are similar to natural teeth. It is the most widely used in the field of high-quality oral restoration, such as fixed dentures, post cores, implants, brackets, etc. have been applied in all aspects. In recent years, with the increasing dem...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/638C04B35/64B33Y70/00B33Y10/00B33Y80/00
CPCB33Y10/00B33Y70/00B33Y80/00C04B35/48C04B35/638C04B35/64C04B2235/3224C04B2235/3225C04B2235/3241C04B2235/3246C04B2235/6562C04B2235/6567C04B2235/9661
Inventor 伍尚华黄淼俊李练邓欣吴子薇
Owner GUANGDONG UNIV OF TECH
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