In this paper, the effect of an epoxy reactive diluent on the viscosity of a tetrafunctional epoxy precursor (TGMDA) has been analyzed for unfilled and nanofilled epoxy matrices. Despite very good mechanical performance of this epoxy resin, one of the current limitations of this epoxy precursor is related to the high value of the viscosity. This is a very critical point to manufacture CFRCs. In this paper we show an epoxy formulation able to overcome this drawback. In order to optimize the dispersion of MWCNTs inside the epoxy mixture, we have fluidified the initial epoxy precursors with an epoxy reactive monomer which has proven to be very effective to lower the viscosity of the nanoparticles/resin mixture and therefore in facilitating the nanofiller dispersion step.
Viscoelastic Properties of CNT/Epoxy-Amine Resins for Structural Applications
NOBILE, Maria Rossella;FIERRO, ANNALISA;GUADAGNO, Liberata;RAIMONDO, MARIALUIGIA
2013-01-01
Abstract
In this paper, the effect of an epoxy reactive diluent on the viscosity of a tetrafunctional epoxy precursor (TGMDA) has been analyzed for unfilled and nanofilled epoxy matrices. Despite very good mechanical performance of this epoxy resin, one of the current limitations of this epoxy precursor is related to the high value of the viscosity. This is a very critical point to manufacture CFRCs. In this paper we show an epoxy formulation able to overcome this drawback. In order to optimize the dispersion of MWCNTs inside the epoxy mixture, we have fluidified the initial epoxy precursors with an epoxy reactive monomer which has proven to be very effective to lower the viscosity of the nanoparticles/resin mixture and therefore in facilitating the nanofiller dispersion step.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
