Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 27, 2023 - September 29, 2023
In the 3D printing with FDM printer, thermoplastic resin filaments are heated and melted by the printer head and then laminated layer by layer, so the specific gravity of the printed products is almost the same as that of the material. Therefore, a reduction in the filling density is necessary to reduce the weight of the printed products. However, printed products with low filling density have weaker mechanical strength due to the mesh structure. In this study, original filaments were prepared by mixing inorganic hollow particles during filament regeneration, and 3D printing of lightweight composites without reduction of the stiffness is attempted. The effects of the base resin on 3D printing with original filaments was also investigated. It was found that both the stiffness improvement and weight reduction of the filament is possible by including hollow particles. However, due to molding defects during specimen fabrication, the stiffness of the printed specimen could not be improved. It is expected that further improvement in stiffness is possible if the molding accuracy is improved.
