Viabilidade técnica da aplicação de polímeros termoplásticos reciclados para impressão 3d

Abstract

The presented study is a description of the mechanical properties of printed parts by MA equipment based on the extrusion system and aims to verify the feasibility of reusing recycled thermoplastic polymer materials: ABS, PLA, HDPE, PP and PETG. It is a quantitative and qualitative research from experimental tests, through strategies of evaluation of filling parameters and extrusion temperature for each type of polymer. The research was divided into 3 steps. Initially in the first stage of the research were the characterization of the materials and analysis of the mass loss in several temperatures used during the filament manufacture, observing that the greatest loss of 5.826% was at the temperature of 280 ºC with the polymer PP, and it was noticed that there is a significant mass loss. In the second stage the filaments were manufactured from virgin and recycled material, in which it was possible to identify that the size established in this filament was at 1,75mm for use in the Zmorph 3D printer. The third step was to test the specimens with virgin and recycled ABS polymers and virgin PETG with 50% and 35% filling of the specimens, after printing it was possible to verify that the specimens printed in PETG recycled with 50 % of fill was the material that obtained the highest tensile strength limit of 49,12 MPa and flexion with 5,05 MPa. In the hardness test, the recycled PLA 50% obtained an average of 215,55 GPa. There were three flaws in the process, which led to the disposal of printed parts. As regards technical feasibility in the process of manufacturing filaments from recycled waste, it has been confirmed that it is entirely feasible to print parts relative to the quality of the filament and established filament dimensions of 1,75 mm, since the economic viability of the filament manufacture with recycled material, showed that it generates an economy of approximately 88% in the cost of the raw material