The Effect of PVA Binder System on the Printability of Alumina Paste for Direct Ink Writing
محورهای موضوعی : Journal of Environmental Friendly Materials
Sh Mahboubizadeh
1
,
A Kazemi
2
,
M Khodaei
3
1 - Department of Materials Engineering, SR.C., Islamic Azad University, Tehran, Iran
2 - Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran
3 - Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran
کلید واژه: Direct Ink Writing, Ceramic Additive Manufacturing, Alumina Paste Rheology, Polyvinyl Alcohol,
چکیده مقاله :
The use of polymeric binders in the fabrication of ceramic parts by extrusion-based 3D printers is considered to be one of the key elements that, in addition to providing a suitable suspension paste for the addition of ceramic particles, directly affects the controllability of their flow behavior and ultimately their printability. To this end, the present research investigated the effect of simultaneously adding different polyvinyl alcohol binders with different debinding temperatures to alumina pastes. Because of the high viscosity of the alumina at high percentages by weight, its printability is difficult for this reason, and the device can be damaged during the printing process. In addition, the density and strength properties of the printed parts suffer from a decrease in printability quality. For this purpose, the effects of hybrid binder systems on the additive manufacturing of alumina components were investigated, evaluating three different compositional ratios (25/75, 50/50, and 75/25) to identify the optimal formulation. The experimental results show that strategic selection of binder proportions significantly improves both the rheological properties critical for extrusion-based printing and the structural integrity of sintered components. Accordingly, it was observed that the sample with the highest PVA ratio with lower debinding temperature showed the best printability, but the strength and density properties of the cured samples of the equal binder combination sample were the highest
The use of polymeric binders in the fabrication of ceramic parts by extrusion-based 3D printers is considered to be one of the key elements that, in addition to providing a suitable suspension paste for the addition of ceramic particles, directly affects the controllability of their flow behavior and ultimately their printability. To this end, the present research investigated the effect of simultaneously adding different polyvinyl alcohol binders with different debinding temperatures to alumina pastes. Because of the high viscosity of the alumina at high percentages by weight, its printability is difficult for this reason, and the device can be damaged during the printing process. In addition, the density and strength properties of the printed parts suffer from a decrease in printability quality. For this purpose, the effects of hybrid binder systems on the additive manufacturing of alumina components were investigated, evaluating three different compositional ratios (25/75, 50/50, and 75/25) to identify the optimal formulation. The experimental results show that strategic selection of binder proportions significantly improves both the rheological properties critical for extrusion-based printing and the structural integrity of sintered components. Accordingly, it was observed that the sample with the highest PVA ratio with lower debinding temperature showed the best printability, but the strength and density properties of the cured samples of the equal binder combination sample were the highest
[1] Lakhdar Y, Tuck C, Binner J, Terry A, Goodridge R. Additive manufacturing of advanced ceramic materials. Prog. Mater. Sci. 2021;1(116):100736.
[2] Yang L, Zeng X, Ditta A, Feng B, Su L, Zhang Y. Preliminary 3D printing of large inclined-shaped alumina ceramic parts by direct ink writing. J. Adv. Ceram. 2020; 9:312-9.
[3] Li H, Liu Y, Liu Y, Zeng Q, Liang J. Thermal treatment of γ-Al2O3 for the preparation of stereolithography 3D printing ceramic slurries. Front. Mater. 2019; 19(6):295.
[4] Sun J, Ye D, Zou J, Chen X, Wang Y, Yuan J, Liang H, Qu H, Binner J, Bai J. A review on additive manufacturing of ceramic matrix composites. J. Mater. Sci. Technol. 2023; 1(138):1-6.
[5] Subramanian K, Vail N, Barlow J, Marcus H. Selective laser sintering of alumina with polymer binders. RP Rapid Prototyping J. 1995; 1(2):24-35.
[6] Schwentenwein M, Homa J. Additive manufacturing of dense alumina ceramics. International J. Appl. Ceram. Technol. 2015;12(1):1-7.
[7] Li W, Armani A, Martin A, Kroehler B, Henderson A, Huang T, Watts J, Hilmas G, Leu M. Extrusion-based additive manufacturing of functionally graded ceramics. J. Eur. Ceram. Soc. 2021;41(3):2049-57.
[8] De Camargo IL, Fortulan CA, Colorado HA. A review on the ceramic additive manufacturing technologies and availability of equipment and materials. Cerâm. 2022; 16(68):329-47.
[9] Diniță A, Neacșa A, Portoacă AI, Tănase M, Ilinca CN, Ramadan IN. Additive manufacturing post-processing treatments, a review with emphasis on mechanical characteristics. Mater. 2023; 26; (13):4610.
[10] Shahzad A, Lazoglu I. Direct ink writing (DIW) of structural and functional ceramics: recent achievements and future challenges. Compos. Part B: Eng. 2021; 15(225):109249.
[11] Cesarano J. A review of robocasting technology. MRS Online Proceedings Library (OPL). 1998; 542:133.
[12] Mahboubizadeh, S, Investigation of the Printability of Highly Loaded Ceramic Pastes by Robocasting Method. The 14th Biennial Congress of Iranian Ceramic Society and the 4th Int. Conf. Ceram. 2024.
[13] Mahbobuizdeh, S, kazemi, A, khodaei, M, The Effect of Various PVA Binder Ratios on 3D Printing Alumina Pastes,” 13th International Conference on Materials Engineering and Metallurgy, IMAT2024, karaj, 2024
[14] Mahboubizadeh S, Kazemi A, Khodaei M. Investigating the Effect of Modifying the Binder and Other Additives on the Printability of Ceramic Paste for the Direct Ink Writing (DIW) Technique. Adv. Ceram. Prog. 2024; 10(4):15-24.
