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Incorporation of elastomer into poly(ether ether ketone): an attempt to improve the damping factor

Abstract : The incorporation of an elastomer phase into a poly(ether ether ketone) (PEEK) matrix was carried out using two different processing methods (melt blending (MB) and dry blending) to improve the damping factor (tan δ) of the composite with a minimal change in the PEEK stiffness. A cross-linked fluoroelastomer (CFE) was carefully chosen according to its high glass transition temperature (Tα), high thermal stability and high modulus. The blends were characterized by scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA), modified Oberst test, flexural test and pyrolysis combustion flow calorimeter. According to SEM micrographs, an original well-dispersed PEEK-elastomer composite was obtained. The tan δ of the materials was evaluated using DMTA and modified Oberst test. Both techniques indicate that the incorporation of 5–20 wt% of CFE fine powders only slightly increased the tan δ of the material. Moreover, a decrease in flexural modulus and thermal stability of the blends was detected when there was an increase in the CFE content. Even if the properties are not yet significantly improved, it was well ascribed that the MB method was suitable to mix elastomer particles within a PEEK matrix. Poor interfacial adhesion has been identified as the main key parameter, which should be improved in further work.
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Submitted on : Thursday, May 27, 2021 - 12:36:02 AM
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Thibault Parpaite, Franck Sosson, Rodolphe Sonnier, Laurent Clerc, Anne Bergeret. Incorporation of elastomer into poly(ether ether ketone): an attempt to improve the damping factor. High Performance Polymers, SAGE Publications, 2014, 26 (8), pp.986-996. ⟨10.1177/0954008314536592⟩. ⟨hal-02914578⟩



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