This part of ISO 5794 specifies methods of test for characterizing precipitated hydrated silica for use as a rubber compounding ingredient. A definition of precipitated hydrated silica is given.
ISO 5794-2 specifies the test formulation, mixing equipment, mixing procedure and methods of test for use in determining the physical properties of styrene-butadiene rubber compounded with precipitated hydrated silica.
ISO 5794-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry.
This third edition cancels and replaces the second edition (ISO 5794-1:1994), which has been technically revised.
ISO 5794 consists of the following parts, under the general title Rubber compounding ingredients — Silica, precipitated, hydrated:
- Part 1: Non-rubber tests
- Part 2: Evaluation procedures in styrene-butadiene rubber