Estudo da matéria-prima para impressora 3D proveniente da reciclagem das tampas de garrafas

Abstract

The present work is the study of the feasibility of using recycled polymer from bottle caps for use in 3D printers, through studies of the properties of High Density Polyethylene (HDPE) and Polypropylene (PP) materials that make up the caps of the bottles. From these recycled materials, a filament was developed for a 3D printer with an approximate dimension of 1.65 mm, where it was 0.1 mm smaller than required. The material was processed in the extruder at a screw speed of 40 RPM, 190 °C in the die, 85 °C in the second heating zone, and 185 °C in the first heating zone. To verify if the recycled filament has the proper properties for a 3D printer, the characterizations were performed using the Melt Flow Index (MFI), Fourier Transform Infrared Spectroscopy (FTIR) and tensile test. In MFI analysis was performed in ASTM D1238 standard. In the FTIR spectrum, characteristic bands of HDPE and PP were found in the study material. In the tensile test, the mean value of modulus of elasticity and tensile strength was compared with virgin HDPE and Acrylonitrile Butadiene Styrene (ABS). The mechanical properties of recycled material were inferior to virgin material and ABS.