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Evaluating properties of filled compounds (Part 1)

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Compounds with different base elastomers and fillers 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 were prepared and tested. An ARC 2020 capil- lary rheometer was used to measure the viscoelastic properties of the compounds at various shear rates. An RPA 2000 with EDR was also utilized to measure the processing properties of the compounds at a multitude of strains and shear rates. Comparisons were made of the rheological behavior of the compounds.