Physical Studies on NBR/Waste PVC Blends Reinforced with Calcium Carbonate and Carbon Black

Dielectric as well as mechanical properties of blends prepared by acrylonitrile-butadiene rubber with waste poly(vinyl chloride) (NBR/wPVC) were studied. The compatibility was investigated by the dielectric method and confirmed by means of the scanning electron microscope (SEM). The results indicate that such blends are incompatible. To overcome the problem of phase separation 4 phr of maleic anhydride was added as a compatibilizer. It was found that the sample containing 20 phr wPVC possesses the most suitable electrical as well as mechanical properties. For such reason this sample was chosen to study the effect of addition of calcium carbonate CaCO 3 and HAF black in increasing quantities on the dielectric as well as the mechanical properties.