Polymerization study and rheological behavior of a RTM6 epoxy resin system during preprocessing step

Nicolas Causse (1) , Stéphanie Benchimol (1) , Lilian Martineau (1) , Delphine Carponcin (2) , Antoine Lonjon (1) , Mathieu Fogel (1) , Jany Dandurand (1) , Eric Dantras (1) , Colette Lacabanne (1)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 IRT Saint Exupéry - Institut de Recherche Technologique

Curing process and rheological behaviors of a monocomposant epoxy resin used in structural aeronautic applications are investigated. This study helped settle the basic parameters in order to optimize the infusion process of carbon fibers in an epoxy matrix. The effect of carbon nanotube dispersion during the preinjection step is also studied to improve electrical behavior of composite parts. The curing process has been analyzed at isothermal temperature using differential scanning calorimetry technique. Viscosity measurements were achieved with a Couette geometry, suitable for low viscosity resin. A shear-thinning effect caused by adding CNTs in the epoxy matrix is detected. It is more pronounced at high temperature for increasing CNT mass content.

Mots clés: Curing; Shear viscosity; Carbon nanotubes; Nano composites; Epoxy resin

Domaines: Matériaux; Matériaux

Nicolas Causse, Stéphanie Benchimol, Lilian Martineau, Delphine Carponcin, Antoine Lonjon, et al.. Polymerization study and rheological behavior of a RTM6 epoxy resin system during preprocessing step. Journal of Thermal Analysis and Calorimetry, 2015, vol. 119 (n° 1), pp. 329-336. ⟨10.1007/s10973-014-4147-y⟩. ⟨hal-01111409⟩