Mechanical properties and applications of recycled polycarbonate particle material extrusion-based additive manufacturing

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Matthew J. Reich
  • Aubrey L. Woern
  • Nagendra G. Tanikella
  • Joshua Pearce

Research units

  • Michigan Technological University

Abstract

Past work has shown that particle material extrusion (fused particle fabrication (FPF)/fused granular fabrication (FGF)) has the potential for increasing the use of recycled polymers in 3D printing. This study extends this potential to high-performance (high-mechanical-strength and heat-resistant) polymers using polycarbonate (PC). Recycled PC regrind of approximately 25 mm2 was 3D printed with an open-source Gigabot X and analyzed. A temperature and nozzle velocity matrix was used to find useful printing parameters, and a print test was used to maximize the output for a two-temperature stage extruder for PC. ASTM type 4 tensile test geometries as well as ASTM-approved compression tests were used to determine the mechanical properties of PC and were compared with filament printing and the bulk virgin material. The results showed the tensile strength of parts manufactured from the recycled PC particles (64.9 MPa) were comparable to that of the commercial filament printed on desktop (62.2 MPa) and large-format (66.3 MPa) 3D printers. Three case study applications were investigated: (i) using PC as a rapid molding technology for lower melting point thermoplastics, (ii) printed parts for high temperature applications, and (iii) printed parts for high-strength applications. The results show that recycled PC particle-based 3D printing can produce high-strength and heat-resistant products at low costs.

Details

Original languageEnglish
Article number1642
Number of pages18
JournalMaterials
Volume12
Issue number10
Publication statusPublished - 1 May 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • 3D printing, Additive manufacturing, Circular economy, Distributed manufacturing, Extruder, Polycarbonate, Polymers, Recycling, Upcycle, Waste plastic

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