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Characterization of the mechanical behavior of PEKK polymer and C/PEKK composite materials for aeronautical applications below and above the glass transition temperature

  • Pedoto, Giuseppe (Department of Physics and Mechanics of Materials, PPRIME Institute, CNRS, ISAE-ENSMA, University of Poitiers) ;
  • Smerdova, Olga (Department of Physics and Mechanics of Materials, PPRIME Institute, CNRS, ISAE-ENSMA, University of Poitiers) ;
  • Grandidier, Jean-Claude (Department of Physics and Mechanics of Materials, PPRIME Institute, CNRS, ISAE-ENSMA, University of Poitiers) ;
  • Gigliotti, Marco (Department of Physics and Mechanics of Materials, PPRIME Institute, CNRS, ISAE-ENSMA, University of Poitiers) ;
  • Vinet, Alain (Airbus S.A.S. 2)
  • Received : 2019.10.14
  • Accepted : 2020.05.08
  • Published : 2020.11.25
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Abstract

This paper is focused on the characterization of the thermomechanical properties of semicrystalline poly-ether-ether-ketone (PEKK) and of carbon fiberreinforced thermoplastic based laminated composites (C/PEKK) below and above the glass transition temperature (Tg). Differential Scanning Calorimetry (DSC), Dynamic Mechanical Analysis (DMA) and tensile tests are carried out on both pure PEKK polymer and [(±45)2, +45]s C/PEKK composite samples, showing a significant similarity in behavior. The employment of a simple micromechanical model confirms that the mechanical and physical behavior of the polymer and that of the matrix in the composite are similar.

Keywords

References

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