Characterization of the mechanical behavior of PEKK polymer and C/PEKK composite materials for aeronautical applications below and above the glass transition temperature
Giuseppe Pedoto,Olga Smerdova,Jean-Claude Grandidier,Marco Gigliotti,Alain Vinet
Abstract
This paper is focused on the characterization of the thermomechanical properties of semicrystalline poly-ether-ether-ketone (PEKK) and of carbon fiber reinforced thermoplastic based laminated composites (C/PEKK) below and above the glass transition temperature (T_g). 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.
Giuseppe Pedoto, Olga Smerdova, Jean-Claude Grandidier and Marco Gigliotti — Department of Physics and Mechanics of Materials, PPRIME Institute, CNRS, ISAE-ENSMA, University of Poitiers, France
Alain Vinet — Airbus S.A.S. 2, Building D42 18 Marius Terce 31025 Toulouse France
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