Thermo-oxidative crosslinking of carbon fiber reinforced PEEK (Polyetheretherketone) for additive manufactured ceramic matrix composites

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008395
URN to cite this document: urn:nbn:de:bvb:703-epub-8395-0

Title data

Freudenberg, Wolfganh ; Wich, Felix ; Best, Jalena ; Moukhina, Elena ; Scherzer, Tim ; Ruckdäschel, Holger ; Langhof, Nico ; Schafföner, Stefan:
Thermo-oxidative crosslinking of carbon fiber reinforced PEEK (Polyetheretherketone) for additive manufactured ceramic matrix composites.
In: Advanced Manufacturing : Polymer & Composites Science. Vol. 10 (2024) Issue 1 . - 2387422.
ISSN 2055-0359
DOI der Verlagsversion: https://doi.org/10.1080/20550340.2024.2387422

	Format: PDF Name: Thermo-oxidative crosslinking of carbon fiber reinforced PEEK Polyetheretherketone for additive manufactured ceramic matrix composites.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project title:	Project's official title Project's id Entwicklung und Charakterisierung additiv gefertigter thermoplast-basierter kurz- und endlosfaserverstärkter C/C-SiC Verbundkeramiken LA 4649/1-1 Open Access Publizieren No information
Project financing:	Deutsche Forschungsgemeinschaft

Abstract

Carbon fiber reinforced polyetheretherketone (CF PEEK)1 samples were fabricated using material extrusion. These additive manufactured green bodies are later processed to their final application as ceramic matrix composites (CMC)² by the liquid silicon infiltration (LSI)³ route. Past studies revealed that the application of material extrusion for the fabrication of CMC requires an additional stabilization-step after 3D-printing in order to prevent the remelting of CF PEEK during the high temperature process of pyrolysis. The thermally induced crosslinking of the CF-PEEK parts ensured shape accuracy and avoided remelting during the pyrolysis afterwards but is limited by the melting temperature of PEEK (Tm ~ 343 °C). On the other hand, a certain temperature must be reached to initiate the reaction mechanism of the CF PEEK. Besides the final thermal annealing temperature, the crosslinking is also affected by time. Based on the analytical results from differential scanning calorimetry (DSC)4, a kinetic model was proposed in the temperature range of 315 °C – 335 °C, and an annealing time of 6 h – 48 h was deduced. Rheological and shape stability investigations of thermally annealed specimens verified the analytic results.

Further data

Item Type:	Article in a journal
Keywords:	carbon fiber reinforced polyetheretherketone; material extrusion; thermal crosslinking; differential scanning calorimetry; kinetics
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties > Faculty of Engineering Science > Chair Polymer Materials > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Ceramic Materials Faculties > Faculty of Engineering Science > Chair Polymer Materials
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-8395-0
Date Deposited:	02 Apr 2025 08:23
Last Modified:	02 Apr 2025 08:23
URI:	https://epub.uni-bayreuth.de/id/eprint/8395

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