MECHANICAL-PROPERTIES OF BLENDS OF NYLON WITH CHEMICALLY-MODIFIED ABS

Tensile. flexural and impact properties were measured of a heterogeneo us polymer blend system, consisting of nylon 6 and a chemically modifi ed ABS (MABS). It was found from the tensile tests that nylon-richer b lends show yielding behaviour and nylon-leaner blends show necking beh aviour. The addition of MABS increases the modulus. whereas the tensil e strength and percentage elongation at break decrease and go through a minimum. The impact strength is increased to a maximum of approximat ely three times when 20 wt% of MABS is added to nylon 6. In order to i nterpolate the mechanical properties observed, empirical equations are given which are found to describe the experimental data rather well. Photomicrographs were taken of the tensile fractured surfaces using a scanning electron microscope.