Abstract
Currently, 3D printers have a wide range of practical applications from the aerospace field to the medical field, and there are actual examples where 3D printers are already used for mass production of 10,000 parts in automobiles. As a result, it is possible to greatly reduce the manufacturing time and reduce costs. However, while there are expectations for commercialization that takes advantage of the 3D printer, there are many problems to be overcome. This is due to the existence of the laminating interface created by molding and the low strength of the resin material itself. As a result, it is difficult to shape and commercialize many resin products. So I focused on the FDM 3D printer. The FDM-3D printer is also characterized by being able to use ABS resin, which is a resin material with high strength and excellent versatility. Therefore, we considered the development of a new high-strength composite resin material that uses ABS resin that can be introduced into this FDM-3D printer as a base material and CNT as a reinforcing material. In addition, it was investigated whether it is possible to further improve the strength by combining the laminated interfaces that cause the decrease in the strength of the shaped article, and the synergistic effect with the new composite resin material. From this paper, it was confirmed that the tensile strength of the ABS / CNT composite material was improved by 10% in the filament state. In addition, it was confirmed that the tensile strength was improved by 70% and the bending stress was improved by 37% at the maximum by using a halogen spot heater to form the ABS filament. From these results, it was possible to confirm the effectiveness of compounding ABS resin and CNT and molding using a halogen spot heater.
