Abstract
The Project consists of the obtentions and characterization of the natural rubber (NR) and styrene-butadiene rubber (SBR) composites in the proportion of 50/50 with the addition of the filler, the polyurethane (PU) residue, using the vulcanization semi-eficiente (SEV) system. The influence of the filler on the polymeric matrix and the physical properties of the composites will be the obje…