Evaluation of the effect of accelerated aging on mechanical properties Of PA6 / organophilic clay nanocomposites

The effect of aging on mechanical properties of nanocomposites PA6/clay been reported, aiming mostly to minimize the effects of synthetic plastic waste discarded in the environment. The use of clays in nanocomposites generally accelerate the degradation of these materials. We used a regional bentonite clay, polyamide 6, Polyform - B300 and quaternary ammonium salt - Cetremide (hexadecyltrimethyl ammonium bromide). The hybrid (polymer-clay) were obtained in a co-rotates twin screw extruder and the specimens tensile and impact through injection FLUIDMEC. The FTIR and XRD tests confirmed the presence of molecules of salt in the modified bentonite and its organophilization. The XRD of the obtained hybrids indicated that the organoclay peak disappeared when incorporated into polyamide 6, showing that all systems apparently had exfoliated structure and / or partially exfoliated. The nanocomposites showed improved mechanical properties when compared to the tensile properties of pure polyamide, and the different aging conditions influenced degradation of the materials studied. (author)