Effect of fillers on morphological and wear characteristics of NR/HSR blends with E-glass fiber

The blends of high styrene rubber (HSR) and natural rubber (NR) with E-glass fiber 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 HSR 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. The rate of degradation was almost the same up to 90% degradation for all the samples except NSF-1 and NSF-4, may be due to the mixing of N110 and N774 type of carbon black. 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.