Evaluation of the Viscoelastic Properties of Carbon Black Filled Compounds Composed of Different Elastomers

Compounds composed of different base elastomers will exhibit drastically different viscoelastic properties. This has a great impact on processing operations such as extrusion, calendering, and molding.

In this study, rubber compounds consisting of different base elastomers and N660 carbon black were prepared and tested. An ARC 2020 capillary rheometer was used to measure the die swell and viscosity of the compounds at various shear rates. An RPA 2000 with EDR was also utilized to measure the viscoelastic properties of the compounds at a multitude of strains and shear rates. Comparisons were made of the rheological behavior of the compounds.