Cure characteristics and mechanical properties of acrylonitrile butadiene rubber/reclaimed rubber blends were studied. Minimum torque, (maximum -minimum) torque, scorch time, cure time and cure rate decreased in presence of reclaimed rubber. Tensile strength, elongation at break and compression set increased with increase in reclaim content. Resilience and abrasion resistance decreased with reclaim loading. Heat build up was higher for the blends. The ageing resistance of the blends was inferior to that of the gum compound.
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Sreeja et al. (2002) studied this question.
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