Novel bio-filler for additive manufacturing based on geothermal waste materials F. Tanbar1, M. M. Wibisono2, H. M. Ariyadi2, A. D. Nugraha1, M. R. I. Darmawan2, M. A. Muflikhun2,∗ 1 PLN Research Institute, Jakarta, Indonesia 2 Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika No. 2, Yogyakarta 55281, Indonesia ∗ akhsin.muflikhun@ugm.ac.id Keywords: Silica Powder; filler material; Additive manufacturing; geothermal waste material Silica deposit powder from geothermal waste is a useful material that has excellent physical and mechanical properties and is often used in various industries. The characterization of silica deposit powder has a significant part in understanding its structure, composition, and potential application. Key aspects of silica deposit powder characterization successfully highlighted. By using silica as a filler system in additive manufacturing is one of the processes that can utilize silica deposit powder. This material has the potential to be used as a reinforcement mixture with SLA resin for 3D printing. The present study discusses the ability to mix specimens of silica (size 600 microns) and resin with a composition ratio of 1%: 100%. This research aims to gain knowledge about the basic characteristics of silica deposit powder for better understanding and efficient utilization in various applications, especially additive manufacturing. This research also examines the most effective particle sizes to use and adjustments to the length of time required for the mixing and curing processes in order to obtain maximum results [1-6]. References [1] M.A. Muflikhun, D.A. Sentanu, Characteristics and performance of carabiner remodeling using 3D printing with graded filler and different orientation methods, Eng Fail Anal. 130 (2021) 105795. [2] M.A. Muflikhun, T. Yokozeki, Systematic analysis of fractured specimens of composite laminates: different perspectives between tensile, flexural, Mode I, and Mode II test, International Journal of Lightweight Materials and Manufacture. 6 (2023). [3] A.D. Nugraha, M. Syahril, M.A. Muflikhun, Excellent performance of hybrid model manufactured via additive manufacturing process reinforced with GFRP for sport climbing equipment, Heliyon. 9 (2023). [4] U. Shaukat, E. Rossegger, S. Schlögl, A Review of Multi-Material 3D Printing of Functional Materials via Vat Photopolymerization, Polymers (Basel). 14 (2022). [5] D.A. Rau, M. Forgiarini, C.B. Williams, Hybridizing Direct Ink Write and mask-projection Vat Photopolymerization to enable additive manufacturing of high viscosity photopolymer resins, Addit Manuf. 42 (2021) 101996. [6] F. Zhang, L. Zhu, Z. Li, S. Wang, J. Shi, W. Tang, N. Li, J. Yang, The recent development of vat photopolymerization: A review, Addit Manuf. 48 (2021). 55
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