Effect of electronic irradiations on electrical properties of a high-performance space-used thermoplastic polymer
Résumé
Polymer materials used in satellite manufacturing are exposed to diverse environmental constraints. Since they are electrical insulator, electronic radiations can induce electrostatic discharge phenomena which can damage satellite electronic systems. Moreover, these charging issues are potentially amplified by radiation induced physico-chemical ageing. Thus, it is essential to investigate these modifications to anticipate the material behaviour once in orbit. PolyEtherEtherKetone (PEEK) being used recently in space industry for structural applications, it is necessary to study its behaviour regarding electronic radiations. This work aims to analyse the effects of experimental electronic irradiations on electrical properties of PEEK samples. In this context, semi-crystalline PEEK films were irradiated under high vacuum and at ambient temperature by a mono-energetic electron beam. Analysis of the electric and charge transport behaviours showed evolutions induced by radiative ageing. Especially, a DC conductivity decrease was observed which has been associated with more numerous charge traps.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...