Rubber compounding ingredients. Silica, precipitated, hydrated - Evaluation procedures in a blend of solution styrene-butadiene rubber (S-SBR) and butadiene rubber (BR)

Rubber compounding ingredients. Silica, precipitated, hydrated - Evaluation procedures in a blend of solution styrene-butadiene rubber (S-SBR) and butadiene rubber (BR)

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1   Scope

This part of ISO 5794 specifies the test formulation, equipment, procedure and test methods for determining the physical properties of precipitated hydrated silica in a compound based on a blend of solution styrene-butadiene and butadiene rubber. The formulation can be regarded as a model compound for silica-based passenger car tyre treads.

NOTE 1 ISO 5794-2[2] specifies the test formulation, equipment, procedure and test methods for determining the physical properties of precipitated hydrated silica in a styrene-butadiene rubber mix.

NOTE 2 ISO 5794-1[1] specifies methods for chemical analysis of precipitated hydrated silica, describes its physical and chemical properties, and classifies silicas with respect to their specific surface area obtained by nitrogen adsorption.