Comparison on Properties of Acrylonitrile Styrene Butadiene Rubber (NSBR) and Styrene Butadiene Rubber (SBR) / Nitrile Rubber (NBR) Blends

摘要

Compounds and vulcanisates of acrylo-nitrile-styrene-butadiene rubber (NSBR) were prepared, and their properties were compared with those of conventional blends between styrene butadiene rubber (SBR) and acrylonitrile-butadie-ne rubber (NBR). Results reveal discrepancy in cure behaviour of NSBR from SBR/NBR blends to some extent, i.e., the NSBR yields inferior crosslink density to the SBR/NBR blends, and thus the hardness. By contrast, the cured NSBR specimens offer superior tensile strength and processability. Payne effect as an indication of filler network formation magnitude is slightly greater in the NSBR system. In summary, it is possible to substitute the SBR/NBR blends with single NSBR eliminating the complexity in blending process while giving advantageous process-ability and tensile strength.