APPLICATION OF RUBBER SCRAP IN POLYMER BLENDS

The mechanical and rheological properties and porosity of polymer blen ds of thermoplastic elastomers (styrene-butadiene-styrene, SBS) with p olystyrene used as a matrix for composites filled with rubber scrap we re investigated. The influence of the rubber scrap content (from 45 to 67 wt%), as well as the content of thermoplastic elastomer (SBS), pol ystyrene, and oil on the mechanical and rheological properties and por osity of blends are discussed. The processing properties of blends are expressed through the values of melt viscosity, shear rate, and index n from the power law. The porosity of the blends after extrusion at a temperature of 160 degrees C was estimated.