Improvement of mechanical properties by additive assisted laser sintering of PEEK

Journal Article · Thu May 15 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4873879· OSTI ID:22270999

Kroh, M., E-mail: [e-mail]; Bonten, C., E-mail: [e-mail] ^[1]; Eyerer, P., E-mail: [e-mail] ^[2]

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1. Institut für Kunststofftechnik, University of Stuttgart (Germany)
2. Fraunhofer Institute for Chemical Technology (ICT) (Germany)

The additive assisted laser sintering was recently developed at IKT: A carbon black (CB) additive is used to adjust the polymer's laser absorption behavior with the aim to improve the interconnection of sintered powder layers. In this paper a parameter study, Polyetheretherketone (PEEK) samples were prepared with different contents of carbon black and were laser sintered with varying thermal treatment. The samples were mechanically tested and investigated by optical light and transmission electron microscopy. An influence on the morphology at the border areas of particles and intersections of laser sintered layers was found. Depending on the viscosity of the raw material and CB content, different shapes of lamellae were observed. These (trans-) crystalline or polymorph structures, respectively, influence the thermal and mechanical behavior of the virgin PEEK. Moreover, the thermal treatment during the sintering process caused an improvement of mechanical properties like tensile strength and elongation at break.

• OSTI ID: 22270999
• Journal Information: AIP Conference Proceedings, Vol. 1593, Issue 1; Conference: PPS-29: 29. international conference of the Polymer Processing Society, Nuremberg (Germany), 15-19 Jul 2013; Other Information: (c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADDITIVES
CARBON BLACK
CRYSTAL STRUCTURE
HEAT TREATMENTS
LAMELLAE
LASER RADIATION
LAYERS
MECHANICAL TESTS
MORPHOLOGY
PARTICLES
POLYMERS
POWDERS
RAW MATERIALS
SINTERING
TENSILE PROPERTIES
TRANSMISSION ELECTRON MICROSCOPY
VISCOSITY