PROPERTIES AND MORPHOLOGY OF CROSS-LINKED BUTADIENE-ACRYLONITRILE RUBBER AND POLYSULFIDE RUBBER (NBR TM) BLENDS/

Blending of thermodynamically immiscible butadiene-acrylonitrile rubbe r (NBR) and polysulphide rubber (TM) results in superior performance m aterials as regards solvent resistance, and shows some unusual relatio ns between the composition and properties of the blends obtained. Impr oved performance after vulcanization is probably because of better int erphase bonding, resulting from NBR-TM co-crosslinking. Occurrence of such bonding and its role in amelioration of some of the blends' prope rties are discussed in this paper. The effect of TM concentration and crosslinking system on vulcanization state and behaviour is studied by application of chemical, mechanical and thermal methods. (C) 1998 SCI .