Accéder directement au contenu Accéder directement à la navigation
Nouvelle interface
Article dans une revue

Interaction between UV radiation and filled polytetrafluoroethylene (PTFE). I. Degradation processes

Abstract : The first part of a series of two, this paper analyzes the degradation of pure and filled PTFE under high energy UV radiation. The polymer morphology is first investigated using differential scanning calorimetry, highlighting the respective nucleating efficiency of TiO2 and CaF2 during polymer crystallization. Then, the various polymers are exposed to excimer laser radiation and observed under an optical microscope. The results indicate that the degradation is closely connected with microstructural parameters. In pure PTFE, scattering by crystallites and reflection on piles of lamellae control the nature and extent of the degradation. In filled PTFE, nature and concentration of fillers are the most important features governing degradation. When absorbing particles are added to PTFE, the damage is restricted to the surface and photothermal processes can modify the degradation from heterogeneous to ablative, depending on the filler content.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.mines-ales.fr/hal-03272042
Contributeur : Administrateur IMT - Mines Alès Connectez-vous pour contacter le contributeur
Soumis le : lundi 28 juin 2021 - 09:57:15
Dernière modification le : vendredi 10 septembre 2021 - 15:10:03

Lien texte intégral

Identifiants

Citation

Laurent Ferry, G. Vigier, R. Alexander-Katz, C. Garapon. Interaction between UV radiation and filled polytetrafluoroethylene (PTFE). I. Degradation processes. Journal of Polymer Science Part B: Polymer Physics, 1998, 36 (12), pp.2057-2067. ⟨10.1002/(SICI)1099-0488(19980915)36:12<2057::AID-POLB5>3.0.CO;2-U⟩. ⟨hal-03272042⟩

Partager

Métriques

Consultations de la notice

27