Abstract: The polypropylene (PP)/ethylene-1-octylene copolymer (POE)/tetrapod-like zinc oxide whisker (T-ZnOw) ternary composites were prepared by melting blend in a twin-screw extruder. The rheological behavior of pure PP, PP/POE binary blend and PP/POE/T-ZnOw ternary composites was analyzed using a capillary rheometer. The effect of T-ZnOw loading level on the rheological behavior of the ternary composites was investigated in detail. The results showed that the effect of POE on the consistency of the binary was relative to the temperature, the T-ZnOw content displayed different influence on the consistency, apparent viscosity and viscous flow activation energy of the ternary composites.

Key words: polypropylene, ethylene-octylene copolymer, tetrapod-like zinc oxide whisker, reheological behavior