| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Effect of Temperature on the Cohesiveness of Polymeric Powders: Implications on Spreadability |
| Author(s) |
Aurelien Neveu, Marco Lupo, Filip Francqui |
| On-Site Speaker (Planned) |
Aurelien Neveu |
| Abstract Scope |
The powder spreadability is an important factor in powder bed based additive manufacturing such as Selective Laser Sintering (SLS). Previous studies have already demonstrated the close relation between the powder cohesiveness and the spatial homogeneity of the produced layers during the recoated process. However, in SLS applications polymeric powders are warmed up at a temperature close to the sintering. This temperature elevation will induce changes in the strength of the cohesive interactions leading to a modification of the spreadability. Therefore, an investigation of the effect of temperature is essential to better predict the spreadability of the material inside the machine. In this study, the influence of temperature on polymeric powders (polyamide 6, polyurethane and polypropylene) on cohesion has been evaluated with a rotating drum method (GranuDrum, Granutools, Belgium). The results clearly highlight the importance of performing the characterization at a temperature close to the one seen in the printer. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |