Different blends of SBR/NBR compatibilized by butadiene rubber(BR) were prepared according to the well known standard methods. The modified blend of unfilled SBR/NBR was characterized on the basis of the effect of blend ratio on curing parameters. Themechanical properties, abrasion resistance, compression set and swelling properties of blends were investigated.It was found thatSBR/NBR blends showed comparatively better mechanical properties compared to each other individually rubber system. Curing parameters e.g. low torque (ML) was increased. while a reduction in cure time was observed with increasing SBR ratio in blends. Results revealed that increasing SBR results in an enhancement of tensile strength (TS) and elongation at break (Eb).The effect of blend ratioon the swelling and compression set behavior of SBR/NBR compounds was also investigated. From the current investigation it was found that, the increase SBR loading inherent with dramaticallydecline in swelling percentage while the compression set increases with increasing NBR content.Overall, an observed enhancement in curing parameters and mechanical properties has been achieved by studying the effect of blend ratio on the unfilled SBR/NBRblends.
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