SÍNTESE DE MATERIAL NANOESTRUTURADO À BASE DE RESINA EPOXÍDICA E SÍLICA: ESTUDO DAS PROPRIEDADES TERMOMECÂNICAS.

Science and technology at the nanoscale have attracted considerable attention in recent years, because of the expected impact that the nanostructured materials can have on the improvement of life quality. It is expected that the advance in nanoscience and nanotechnology encourages the exploration of new phenomena and new theories. The present study investigated the main aspects involved in the modified of epoxy resin (RE) cured with hardener polyamide agent. In this epoxy matrix are incorporated inorganic nanoparticles of commercial silica - R200 (AerosilTM). The characterization of the samples from the systems epoxy / polyamide, with and without the addition of nanoclay silica, were evaluated by thermogravimetry (TG), derivative thermogravimetry (DTG) and dynamic mechanical analysis (DMA). The rheometry of the samples indicated that, by the determination of the linear viscoelasticity regime of the epoxy matrix, it was verified that the addition of 1% w/w of silica resulted in increased viscosity of the epoxy matrix, as expected. This behavior suggests that the dispersion resulted in increased interaction between the RE and silica filler, promoted by high shear during the mixing procedure. [ABSTRACT FROM AUTHOR]