研究目的
To explore the possibility of printing complex stabilized zirconia parts on a commercial low-cost 3D printer using new formulations based on mono- and tri-functional acrylic monomers.
研究成果
New acrylate-based formulations enable the fabrication of complex zirconia parts with low viscosity and suitable curing depth using a low-cost DLP printer, achieving good surface finishing and minimal defects.
研究不足
The study used specific monomers and surfactants; other formulations might yield different results. The printer's technical capabilities limit wall thickness and resolution. Further investigation is needed for some surfactants' behavior.
1:Experimental Design and Method Selection:
The study involved preparing UV-curable slurries with different acrylic monomers and ceramic fillers, evaluating their rheological and curing behavior, and fabricating 3D zirconia parts using a DLP printer. Theoretical models like the Jacob Equation for cure depth were employed.
2:Sample Selection and Data Sources:
Zirconia powders stabilized with 3 and 8 mol.% Y2O3 were synthesized via co-precipitation. Various acrylic monomers and surfactants were selected based on technical grade.
3:List of Experimental Equipment and Materials:
Equipment included rheometers, SEM, BET analyzer, laser diffraction analyzer, TGA-DSC analyzer, and a DLP 3D printer. Materials included zirconia powders, acrylic monomers, surfactants, and photoinitiators.
4:Experimental Procedures and Operational Workflow:
Slurries were prepared by mixing monomers, surfactants, and photoinitiators, adding zirconia powder incrementally, and homogenizing with a SpeedMixer. Rheological measurements, cure depth tests, thermal analysis, and 3D printing were conducted step by step.
5:Data Analysis Methods:
Data were analyzed using power law fitting for rheology, Jacob Equation for cure depth, and statistical methods for uncertainty estimation.
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rheometer
Physica MCR 52
Anton Paar
Measuring rheological behavior of suspensions
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SEM
JSM 7100 F
Jeol
Studying powder particles morphology
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laser diffraction analyzer
MasterSizer 2000
Malvern instrument
Measuring particles size distribution
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SEM
SU1510
Hitachi
Taking images of green and sintered bodies
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SpeedMixer
DAC 400.2 VAC-P
Hauschild
Homogenizing mixtures by dual asymmetric centrifugation
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BET analyzer
TriStar 3000
Micromeritics
Determining specific surface area
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TGA-DSC analyzer
SDT Q600
TA Instruments
Thermogravimetric analysis and differential scanning calorimetry
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3D printer
Ember
Autodesk
Fabricating 3D ceramic objects using digital light processing
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UV light meter
222
G&R Labs
Monitoring UV light source
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CAD software
Fusion 360 v2.0.4860
Autodesk
Designing 3D models
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slicing software
Print Studio v1.6.5
Autodesk
Slicing and creating print files
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