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  4. 3D printing of lightweight "All-Polyethylene Single Component" composite materials designed for circularity
 
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2023
Conference Paper
Title

3D printing of lightweight "All-Polyethylene Single Component" composite materials designed for circularity

Abstract
All-hydrocarbon composites ("all-HC") are ideal sustainable materials for lightweight construction: since the matrix and the reinforcing component of the composite are made of the same polymer, the composite can be recycled easily. All-HC are blends of a low (PE-wax), middle (HDPE) and high molecular weight (UHMWPE) fraction of polyethylene. The UHMWPE-fraction forms reinforcing nano-fibrils when subjected to extensional flow during injection molding or extrusion-based 3D printing. Aim of the study is to provide a mechanical (strength, fatigue, creep) and tribological (friction and wear) characterization of 3D-printed all-HC specimens. Tensile strength, fatigue strength, creep resistance and tribological behavior was studied on 3D-printed specimens. Compared to the HDPE-reference, 3D-printed all-HC specimens showed a significantly higher tensile strength and modulus and a significantly improved fatigue and creep performance. In contrast, no substantial increase in wear resistance of the all-HC pins could be observed.
Author(s)
Koplin, Christof  
Fraunhofer-Institut für Werkstoffmechanik IWM  
Schirmeister, Carl
LyondellBasell
Schlüter, Bernadette
Fraunhofer-Institut für Werkstoffmechanik IWM  
Hohe, Jörg  
Fraunhofer-Institut für Werkstoffmechanik IWM  
Hees, Timo
Freiburg Materials Research Center FMF
Mülhaupt, Rolf
Freiburg Materials Research Center FMF
Jaeger, Raimund  orcid-logo
Fraunhofer-Institut für Werkstoffmechanik IWM  
Mainwork
6th Fraunhofer Direct Digital Manufacturing Conference, DDMC 2023. Proceedings  
Conference
Fraunhofer Direct Digital Manufacturing Conference 2023  
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • All-hydrocarbon single component composite

  • reactor blend

  • used Filament Fabrication

  • creep

  • fatigue

  • wear

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