Extrusion-based 3D printing alumina-silica inks: Adjusting rheology and sinterability incorporating waste derived nanoparticles

Hossain, Sk S.; Son, Hyeon-Jin; Park, Su‐Jin; Bae, Chang‐Jun

doi:10.1016/j.jeurceramsoc.2023.03.068

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…This versatility makes it applicable across various industries, each with unique material requirements [1]. Recently, studies on the extrusion printing of nanomaterials, utilizing their astonishing properties, are also investigated [11,12].…”

Section: Introductionmentioning

confidence: 99%

Flexible actuation with intrinsic sensing for ram extrusion 3D printing

Suthithanakom,

Sithiwichankit,

Chaiprabha

et al. 2024

Int J Adv Manuf Technol

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Conventional actuation mechanisms used in liquid deposition modeling (LDM) technology limit the flow handling capability and the visibility of the printing materials’ properties. This work presents a flexible actuation system with intrinsic sensing for a ram extrusion printhead used in LDM technology. A mathematical model is used to design and simulate the printhead. The experimental results demonstrate the system’s ability to control the extrusion flow in two modes. The pressure control mode is favorable for the flow in a transient state such as flushing. The volumetric control mode provides a constant printed line width with less than 0.1-mm deviation between each tested material (biogel, chocolate fudge, and silicone sealant). A lower standard deviation for printed lines in the volumetric control mode indicates more precise line printing. The system also incorporates real-time monitoring of extrusion pressure and flow rate. The intrinsic capability to detect printing material properties is validated in both simulation and experiment. It provides valuable insights for further optimization of the printing process. The proposed system offers the advantage of improved pressure and flow control as well as the ability to monitor and respond to the properties of printing material.

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Section: Introductionmentioning

confidence: 99%

Flexible actuation with intrinsic sensing for ram extrusion 3D printing

Suthithanakom,

Sithiwichankit,

Chaiprabha

et al. 2024

Int J Adv Manuf Technol

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“…For current printing inks, the corresponding printed samples have low molding accuracy, high firing shrinkage, and low strength, limiting the application scope of this technology in the porcelain field. , However, for the high solid loading paste suitable for manufacturing porcelain, it is a complex and challenging issue to design the porcelain clay paste with an appropriate rheology threshold before printing, avoiding the occurrence of clogs and slumping during printing and retaining its shape after printing . For this issue, some scholars have reported relative findings, such as clay formulation, modifier type and content, − surface modification, − printing parameters, − and solids volume fraction, which are controlled to improve the rheological behavior of the precursor, achieve good printability and physical properties, and prepare high-precision 3D printing samples. Faksawat et al used 3D printing technology to prepare specific bone production with a bending strength below 40 MPa and a volume shrinkage of about 27% at a sintering temperature of 1200 °C, when 95 wt % clay and 5 wt % hydroxyapatite were selected as raw materials.…”

Section: Introductionmentioning

confidence: 99%

“…Among these, the surface modifier is one of the most effective methods for reaching the moderate rheology threshold suitable for 3D printing. Dispersant Disperbyk-180 for steric stabilization, Dispex A40 for zeta potential and pH regulation, Disperbyk (BYK, copolymer with acidic groups) as a wetting and dispersing agent, and sodium citrate , and the like were employed to optimize the rheological behavior of the precursor and the suitability for DIW 3D printing. Among these, sodium citrate (SC) is one of the most widely used rheological regulators and retarders in many fields.…”

Section: Introductionmentioning

confidence: 99%

Rheology and Printability of a Porcelain Clay Paste for DIW 3D Printing of Ceramics with Complex Geometric Structures

Wu,

Lan,

et al. 2024

ACS Omega

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The modeling of ceramics with complex geometric structures currently depends on the handcrafted mode, with long cycles, high costs, and low efficiency; additive manufacturing (AM) technology can solve this problem well. Herein, the porcelain clay paste was successfully prepared for the direct ink writing (DIW) 3D printing process of ceramics with complex geometric structures, and the effects of sodium citrate (SC) content on the rheological properties and DIW 3D printability of the porcelain clay paste were investigated in detail. The SC has a vital role in the rheological behavior of porcelain clay paste. Adding SC increases the absolute zeta potential and decreases the viscosity of the paste, while a high SC content will lead to a low storage modulus of the paste. The porcelain clay paste with an SC content of 0.05% and a paste solid content of 75% possesses suitable rheological properties and a storage modulus for DIW 3D printing. The as-prepared porcelain clay paste has high DIW 3D printability at a pressure of 0.5 MPa, and a 3D-printed green body with a well-densified structure can be achieved. After being sintered, the 3Dprinted ceramic exhibits high densification and mechanical properties. A green body with complex geometric structures is quickly and precisely modeled by the DIW 3D printing process with the resultant porcelain clay paste as the raw material. This work provides a practical approach to rapidly fabricating ceramics with complex geometrical structures.

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