Tuning the rheological properties of paraffin-wax ceramic feedstocks for deposition with thermoplastic 3D printing

Özden Moser, Ipeknaz (author), Vukšić, Milan (author), Dular, Matevž (author), Iveković, Aljaž (author), Kocjan, Andraž (author)

Droplet deposition with material-jetting methods such as thermoplastic 3D printing (T3DP) depends greatly on the rheological properties of the feedstocks. This study investigated the effect of particle interactions and the degree of weak flocculation on the shear thinning behaviour, the yield stress and the storage/loss moduli of paraffin-wax-based feedstocks containing 40 vol% of zirconia (3Y-TZP) micron-sized powder. Steric stabilization of the feedstocks was provided by varying the ratios of the surfactants with different chain lengths, i.e., stearic acid (2.4 nm) and Solsperse 3000® (10 nm), which in turn affected the dynamics of the droplet formation and the quality of the layers when jetting non-Newtonian, thermoplastic ceramic feedstocks. The results of the study extend the guidelines for the processing of printable feedstocks used in T3DP additive manufacturing.

• Language: English
• Keywords: additive manufacturing, material jetting, colloidal processing, zirconia, rheology
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 7791-7800
• Numbering: Vol. 44, iss. 13
• PID: 20.500.12556/RUL-160504
• UDC: 620.1/.2
• ISSN on article: 1873-619X
• DOI: 10.1016/j.jeurceramsoc.2024.05.057
• COBISS.SI-ID: 205598211
• Publication date in RUL: 29.08.2024

Record is a part of a journal

• Title: Journal of the European Ceramic Society
• Publisher: Elsevier, European Ceramic Society
• ISSN: 1873-619X
• COBISS.SI-ID: 193568259

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J3-3064
• Name: Predklinične in klinične raziskave cirkonijeve oksidne dentalne keramike, izdelane s tehnologijami aditivnega oblikovanja (ZIRAMDENT)

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0087
• Name: Keramični in komplementarni materiali za napredne inženirske in biomedicinske aplikacije