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A kind of light-cured calcium silicate/β-tricalcium phosphate ceramic paste and preparation method of porous scaffold

A technology of tricalcium phosphate ceramics and light-curing molding, applied in the direction of prosthesis, tissue regeneration, additive processing, etc., can solve the problems of affecting the printing accuracy of printed parts, low printing accuracy, cracking and deformation of printed parts, etc., to improve the curing efficiency , The effect of reducing the degree of printing deformation and reducing the tendency of cracking

Active Publication Date: 2022-08-05
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of calcium silicate / β-tricalcium phosphate porous scaffolds is currently facing the following problems: (1) The selection of printing parameters such as laser power, scanning speed, layer thickness, and scanning distance in the control of the forming accuracy of printed parts directly affects the quality of printed parts. Printing accuracy, the printing accuracy of the existing printed parts is low; (2) The printed parts will crack and deform during the degreasing and sintering process

Method used

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  • A kind of light-cured calcium silicate/β-tricalcium phosphate ceramic paste and preparation method of porous scaffold
  • A kind of light-cured calcium silicate/β-tricalcium phosphate ceramic paste and preparation method of porous scaffold
  • A kind of light-cured calcium silicate/β-tricalcium phosphate ceramic paste and preparation method of porous scaffold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, a light-cured calcium silicate / β-tricalcium phosphate ceramic paste, according to the mass ratio, including 83% of ceramic powder, 14% of premix, 1.0% of dispersant, 0.5% of photoinitiator, Volume agent 1.0% and leveling agent 0.5%;

[0039] The ceramic powder is a mixed powder of calcium silicate and β-tricalcium phosphate, and the mass ratio of calcium silicate to β-tricalcium phosphate is 0.8:1.2; the D50 of calcium silicate and β-tricalcium phosphate is 3μm;

[0040]The premix is ​​a mixture of bisphenol A epoxy acrylic resin, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate; wherein, the bisphenol A epoxy acrylic resin accounts for the majority of the quality of the premix. 26.0%, 1,6-hexanediol diacrylate accounts for 59.0% of the premix, and trimethylolpropane triacrylate accounts for 15.0% of the premix;

[0041] Described dispersant is TEGO 685 oily wetting and dispersing agent;

[0042] Described photoinitiator is benzoin dimethyl eth...

Embodiment 2

[0061] Example 2, a light-cured calcium silicate / β-tricalcium phosphate ceramic paste, according to the mass ratio, including 81.5% of ceramic powder, 14% of premix, 1.5% of dispersant, 0.5% of photoinitiator, Volume agent 1.5% and leveling agent 1.0%;

[0062] The ceramic powder is a mixed powder of calcium silicate and β-tricalcium phosphate, the mass ratio of calcium silicate and β-tricalcium phosphate is 0.9-1.1; D50 of calcium silicate and β-tricalcium phosphate is 3 μm;

[0063] The premix is ​​a mixture of bisphenol A epoxy acrylic resin, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate; wherein, bisphenol A epoxy acrylic resin accounts for 25.0% of the mass of the premix %, 1,6-Hexanediol diacrylate accounts for 58.0% of the mass of the premix, and trimethylolpropane triacrylate accounts for 17.0% of the mass of the premix;

[0064] Described dispersant is TEGO 685 oily wetting and dispersing agent;

[0065] Described photoinitiator is benzoin dimethyl et...

Embodiment 3

[0084] Embodiment 3, a light-cured calcium silicate / β-tricalcium phosphate ceramic paste, according to the mass ratio, including 80% of ceramic powder, 15% of premix, 1.5% of dispersant, 1.0% of photoinitiator, Volume agent 1.5% and leveling agent 1.0%;

[0085] The ceramic powder is a mixed powder of calcium silicate and β-tricalcium phosphate, the mass ratio of calcium silicate and β-tricalcium phosphate is 1:1; D50 of calcium silicate and β-tricalcium phosphate is 3 μm ;

[0086] The premix is ​​a mixture of bisphenol A epoxy acrylic resin, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate; wherein, bisphenol A epoxy acrylic resin accounts for 25% of the mass of the premix. %, 1,6-Hexanediol diacrylate accounts for 59% of the mass of the premix, and trimethylolpropane triacrylate accounts for 16% of the mass of the premix;

[0087] The dispersant is TEGO 685 oily wetting and dispersing agent;

[0088] Described photoinitiator is benzoin dimethyl ether;

[008...

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Abstract

A kind of optical curing of calcium silicate / β‑ phosphate three calcium ceramic cream and porous stent preparation methods. Ceramic cream is based on quality ratio, including ceramic powder 78‑83 %, premixed 14‑16 %, dispersant 1.0‑2.0%, 0.5 光1.0 % of the light -induced agent, 1.0‑2.0 % compatible agent and 0.5‑1.0 % flowing agent; the preparation method is optimized by optimizing the ingredients of calcium calcium silicate / β‑ phosphate cream, and rationally selected optical curing to curing curingFormed printing parameters, optimizing the design of porous bracket structure, and reasonable design subsequent sintering process, which improves the printing accuracy of photocalized calcium silicate / β‑ phosphate, reducing the cracking and deformation of the sintering process, and obtaining high accuracy, obtaining high accuracy, and obtaining high accuracy, and obtaining high accuracy and accuracy.Cracking and deformed calcium silicate / β -phosphate trigly -porous bracket.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium silicate / beta-tricalcium phosphate ceramics, and particularly relates to a preparation method of a light-cured calcium silicate / beta-tricalcium phosphate ceramic paste and a porous support. Background technique [0002] Calcium silicate, β-tricalcium phosphate and natural bone have similar inorganic components. They not only have good biocompatibility, but also form chemical bonds with new bone and induce bone tissue regeneration, so they are widely used in bone. tissue repair. Bone defects caused by various factors such as trauma, tumor and infection caused by congenital deformities, natural disasters and traffic accidents are very common in clinical practice. Great inconvenience. The traditional treatment methods have their own limitations, such as the secondary injury of autologous bone transplantation in the donor area, and the source is limited; although allogeneic bone trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/22C04B35/447C04B35/622C04B35/632C04B35/634C04B35/64A61L27/02A61L27/12A61L27/50A61L27/56B33Y70/10B33Y10/00
CPCC04B35/22C04B35/447C04B35/622C04B35/632C04B35/63452C04B35/64A61L27/56A61L27/12A61L27/025A61L27/50B33Y70/10B33Y10/00A61L2430/02C04B2235/6026
Inventor 鲍崇高宋索成卢秉恒
Owner XI AN JIAOTONG UNIV
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