New powder reuse schema in laser-based powder bed fusion of polymers
Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 187(2024) vom: 01. Aug., Seite 11-21 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2024
|
| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article 3D printing Additive manufacturing Laser-based powder bed fusion of polymers Polyamide 12 Polymer degradation Recycling Solid plastic waste Thermal properties X-ray computed tomography mehr... |
| Zusammenfassung: | Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved. The laser-based powder bed fusion of polymers (PBF-LB/P) process often utilizes a blend of powders with varying degrees of degradation. Specifically, for polyamide 12, the traditional reuse schema involves mixing post-processed powder with virgin powder at a predetermined ratio before reintroducing it to the process. Given that only about 15% of the powder is utilized in part production, and powders are refreshed in equal proportions, there arises a challenge with the incremental accumulation of material across build cycles. To mitigate the consumption of fresh powder relative to the actual material usage, this study introduces the incorporation of recycled material into the PBF-LB/P process. This new powder reuse schema is presented for the first time, focusing on the laser sintering process. The characteristics of the recycled powder were evaluated through scanning electron microscopy, differential scanning calorimetry, X-ray diffraction, particle size distribution, and dynamic powder flowability assessments. The findings reveal that waste powders can be effectively reused in PBF-LB/P to produce components with satisfactory mechanical properties, porosity levels, dimensional accuracy, and surface quality |
|---|---|
| Beschreibung: | Date Completed 10.08.2024 Date Revised 10.08.2024 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2024.06.030 |