A Novel Powder Addition Method for Improving Tensile Strength of Polylactic-Acid Prepared by Using Fused Filament Fabrication (FFF)

Abstract:

Although Fused Filament Fabrication (FFF) technology has gained popularity and is used extensively since the last decade, the low mechanical properties of the resulting product have been recognized as the major limitation of this technique. The anisotropic nature of the printed products due to the layered structure and many cavities that are present inside the printed parts are among the main causes of this problem. In this study, the powder addition reinforcement (PAR) method had been developed by introducing reinforcing powder into the polylactic acid (PLA) as the base material during the printing process so that nozzle clogging can be avoided and powders can be placed between the layers. In this work, iron oxide nanoparticles (Fe₂O₃) were used as a reinforcing powder. The addition of this powder was carried out by using two methods, namely brushing and compressed air-assisted techniques. The results showed that the compressed-air assisted technique demonstrated better results in terms of mechanical properties. In this case, the tensile strength of the composite with the compressed-air assisted technique was higher by 28.95% than that of the PLA and by 5.53% - 25.2% than that of the brushing method. Finally, this study showed that the compressed air-assisted method is the potential to be developed in the future as a powder addition reinforcement technique in the FFF process.

• Periodical: Applied Mechanics and Materials (Volume 920)
• Pages: 23-34
• DOI: https://doi.org/10.4028/p-gw2YjX
• Online since: March 2024
• Authors: Juan Pratama, Rahman Wijaya, Urip Agus Salim, Suyitno Suyitno, Budi Arifvianto, Harwin Saptoadi, Muslim Mahardika*
• Keywords: Compressed-Air Assisted, Fe₂O₃ Powder, Fused Filament Fabrication, Poly(Lactic Acid) PLA, Powder Addition Reinforcement

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