Blends of Nylon 6/66 and Acrylonitrile-Butadiene Rubber:Effects of Blend Ratio and Dynamic Vulcanization on Morphology and Properties

摘要

The morphology and mechanical properties of nylon(copolyamide 6/66)1 acrylonitrile-butadiene rubber(NBR)blends have been studied with special reference to the effect of blend ratio and crosslinking systems.Morphological investigations of the blends using scanning and transmission electron microscopies show that a uniform and finer dispersion of the elastomer phase is achieved by dynamic crosslinking.The effects of various crosslinking systems such as sulphur and dicumyl peroxide on the morphology and mechanical properties of these blends were analysed.Morphological stability of the blends upon annealing has been investigated and the mechanical properties of the blends have been discussed.Attempts have been made to correlate the morphology with the mechanical properties of the dynamically vulcanized blends.The stability of the blend morphology during annealing has been examined.