Interphase modification by transcrystallinity promotion induced by supramolecular assembly in a high performance thermoplastic composite

Auteurs

A. Martin, F. Addiego, S. Reinard, G. Mertz, J. Bardon, and D. Ruch

Référence

in 17th European Conference on Composites Materials (ECCM17), 26-30th June 2016, Munich, Germany

Description

This work addresses the challenging fibre-matrix compatibilization of a thermoplastic composite based on Poly(EtherEtherKetone) (PEEK) matrix reinforced with continuous high modulus pitch-based carbon fibre. An environmentally friendly methodology was applied in order to use PEEK matrix in high performance composites and dealt with the compatibilization of the matrix with the carbon fibre surface. This innovative and alternative method based on the so called “Layer-by-Layer” technic was used to modify the carbon fibre surface in order to improve the compatibility and the quality of the fibre-matrix interface. Particularly, electrostatic interactions were expected to promote the adhesion of polyelectrolyte species with the unsized and as received oxidized carbon fibre. Moreover, a musselbased adhesive promoter, applied via a water-based process, was used to modify carbon fibre surface and to improve fibre-matrix adhesion. The innovative interface compatibilization method was successfully applied in the case of pitch-based carbon fibre reinforced PEEK matrix and resulted in an enhancement of crystallinity which probably occurred at the interphase and in an improvement of transverse tensile strength.

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