Study on 3D-Direct Ink Writing based on adding silica submicron-particles to improve the rheological properties of alumina ceramic ink

Ye, Zhenyu; Chu, Chengyi; Zhang, Diwei; Ma, Siwei; Guo, Jianjun; Cheng, Yuchuan; Xu, Gaojie; Li, Zhixiang; Sun, Aihua

doi:10.1016/j.mtcomm.2021.102534

Cited by 15 publications

(11 citation statements)

References 27 publications

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“…Meanwhile, η rises from 4.48 × 10 6 to 12.7 × 10 6 mPa•s (shear rate at 0.1 s –1 ) with increasing solid volume from 50 to 52% by MA (Figure b). This is due to the reduction of mean-free-path (d) (Figure c; d calculation information is described in the Supporting Information by Figure S2 and Table S1) between MA particles, which increases the particle-to-particle interactions and frictions in the system. , The high viscous ink is unsuitable for printing through fine nozzles, showing clogging issues and intermittent exhaust. Continuous extrusion of an extremely high viscous ink like A52N0D2 requires high-pressure extrusion capable printing equipment with a large size nozzle.…”

Section: Results and Discussionmentioning

confidence: 99%

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Hossain

Gao

Park

et al. 2022

ACS Appl. Nano Mater.

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Nanoparticles (NPs) show many unique and advanced behaviors compared to micron-sized particles and above. The effect of NPs on the rheological and sintering nature of direct ink writing (DIW) [extrusion-based three-dimensional (3D) printing] inks has been comprehensively studied. The inks were first formulated through particle size grading of microalumina and nanoalumina (NA) with aqueous-based solvents, and it was found that the solid volume in ink increases up to a certain volume of NA (2%) inclusion due to the change in friction mechanism between particles. Meanwhile, the presence of high volumes of NA (≥3 vol %) reduces solid-loading in ink due to agglomeration of NPs for printable rheology. Second, different NA (0–5 vol %)-containing optimized rheological inks were printed by DIW and sintered at temperatures of 1300–1600 °C. Higher solid-loading ink retaining 2 vol % NA shows low volume shrinkage, and 5 vol % NA-containing ink reaches 97% density at temperatures as low as 100 °C than without NA ink. Including NPs in the ceramic 3D printing technology decreases the use of organic contents (reduce greenhouse effect) and also effectively reduces the shrinkage and fabricates a dense printed structure by eliminating binder-burnout generated pores at a low temperature (energy conservation).

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Section: Results and Discussionmentioning

confidence: 99%

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Hossain

Gao

Park

et al. 2022

ACS Appl. Nano Mater.

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“…This phenomenon was shear thinning, indicating that the alumina ink was a non-Newtonian fluid. 11,27,28 Consequently, the printing ink can be squeezed out easily by rotational shearing of the printer screw during the DIW process. Figure 6 illustrates the connection between the modulus (G′ and G″) and shear stress of various alumina inks.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Optimization of 3D Printing Parameters for Alumina Ceramic Based on the Orthogonal Test

Wang,

Xiang,

Feng

et al. 2024

ACS Omega

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In this paper, an alumina ink with good rheological properties was successfully prepared using pseudoboehmite as the main component, nitric acid as the colloidal solvent, and sesbania powder as the lubricant. The impact of nine different ink formulations, namely, Ink1 to Ink9, on the printability and rheological features of the ink was investigated. Consequently, it was found that Ink3 with 5 wt % nitric acid and 5 wt % sesbania powder exhibited the most favorable formability. This ink was utilized to fabricate alumina samples with direct ink writing (DIW) three-dimensional (3D) printing technology. The printed alumina samples were characterized using an automatic Brunauer−Emmett−Teller, X-ray diffractometer, Fourier transform infrared spectroscopy, and scanning electron microscope. To obtain the optimal printing parameters, a threefactor and three-level orthogonal test was designed to research the influences of different 3D printing parameters (filling ratio, nozzle diameter, and layer thickness) on the specific surface area, pore characteristics (size and volume), and radial crushing strength of the alumina specimens. The primary and secondary orders of the effects on the radial crushing strength and pore structure were determined through analysis of the experimental data. The experimental results showed that the alumina sample with a filling ratio of 80%, nozzle diameter of 0.6 mm, and layer thickness of 0.3 mm was found to have better strength of 48.07 ± 9.53 N/mm and specific surface area of 185.7315 m 2 /g. This study provides a theoretical base for the preparation of alumina carriers by DIW 3D printing.

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“…The liquid resin system meets the requirement of particle system, which has been widely used for printing ceramic parts. There are existing branches of research on ceramic ink printing and sintering after post-curing [ 21 , 22 ]. However, the increased content of ceramic powders dramatically increases the viscosity and limits the penetration of the UV light, which leads to a decrease in the maximum curing depth and the decrease in the printing efficiency of the same model [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Fumed Silica on Thixotropic Behavior and Processing Window by UV-Assisted Direct Ink Writing

2022

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In this research, the effects of fumed silica (FS) on the Ultraviolet (UV)-ink rheological behavior and processing windows were discussed. Objects using different concentrations of FS inks were printed by the modified UV-Direct ink writing (DIW) printer. The function of fumed silica in the ink-based system has been verified, and the processing scope has been expended with a suitable amount of FS combined with the UV light. The results show that the combination of a suitable amount of FS with the UV-DIW system reaches fast and accurate printing with a larger processing window compared to the non-UV system. However, an excessively high concentration of FS will increase the yield stress of the ink, which also increases the requirement of extrusion unit and the die-swelling effects.

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Study on 3D-Direct Ink Writing based on adding silica submicron-particles to improve the rheological properties of alumina ceramic ink

Cited by 15 publications

References 27 publications

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Optimization of 3D Printing Parameters for Alumina Ceramic Based on the Orthogonal Test

Effects of Fumed Silica on Thixotropic Behavior and Processing Window by UV-Assisted Direct Ink Writing

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