Filler-filler and rubber-filler interactions in nitrile rubber/silica composites

摘要

The effects of surface modification on the filler-filler and rubber-filler interactions in silica-filled nitrile rubber composites have been studied. Nitrile rubber composites are prepared with untreated stober silica, organosilane-treated stober silica and externally added precipitated silica along with organosilane. Morphological studies show better filler dispersion in composites containing silane-treated Stober silica-filled composites. The studies of the mechanical properties and dynamic mechanical analysis reveal the strong filler-filler interaction (silica agglomerates) in untreated Stober silica-filled and externally added precipitated silica-filled composites. On the other hand, better rubber-filler interaction is observed for composite filled with Stober silica treated with bifunctional organosilane.