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News & Resources

Mixing Masterbatches

Due to their unique chemistry which results in a large amount of free volume within the polymer/filler matrix, silicones are ideal candidates for incorporating additional fillers or additives. One such method for incorporating a filler into a formulated silicone is via a masterbatch. A masterbatch is a highly filled or concentrated component. For a barium sulfate masterbatch, the amount of masterbatch to be added can be calculated based on the percentage of barium sulfate (BaSO4) in the master batch and the ultimate desired loading of BaSO4 in the final elastomer formulation.