Abstract
This work deals to evaluate nano-powder barium strontium titanium oxide ((BaTiO3)(SrTiO3)), (nanoBSTO) as reinforcing filler for acrylonitrile butadiene rubber (NBR) with titanium dioxide (TO) and carbon black (CB) fillers. The bound rubber content (BRC), rheological, tensile strength property, abrasion resistance and swelling of NBR reinforced with nano-BSTO, were evaluated. The results revealed that nano-BSTO of unvulcanized NBR showed superior BRC values. The scorch time and optimum curing time of cured samples became shorter after adding the investigated fillers, whereas the torque variation increased. The mechanical properties showed higher tensile values of NBR/nano-BSTO vulcanizates containing up to 5 phr, then decreased, as compared to NBR/TO, NBR/CB or neat NBR. The effect of thermal oxidative aging at 90 degrees C for 168 hours on tensile properties of the neat NBR and its composites was also evaluated. The scanning electron microscopy (SEM) illustrated that the utilization of nano-BSTO as filler gave superior compatible and dispersion through the investigated surface.