Effect of Filler and Urethane Rubber on NR/BR with Nanosilica: Morphology and Wear

The blends of butadiene rubber (BR), urethane rubber (EU) and natural rubber (NR) was prepared using a blending technique in presence of different types of carbon black. The effect of filler on morphological and wear characteristics was studied. ISAF type of carbon black showed a significant effect on optimum cure time, cure rate index and mechanical properties by reacting at the interface between BR, EU and NR matrix. All the samples show only one melting peak on the DSC curve; this is attributed to the same backbone structure of the matrix and the carbon black reinforcement. Blends containing ISAF type of carbon black showed high abrasion resistant properties against Du-Pont abrader, DIN abrader and different mining rock surfaces and also is found to be the toughest rubber against all types of rock.