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ISO 20927:2019

Rubber compounding ingredients -- Precipitated silica -- Determination of aggregate size distribution by disc centrifuge

General information
Valid from 25.10.2019
Directives or regulations
None
Standard history
Status
Date
Type
Name
25.10.2019
Main
This document specifies a general method for determining the aggregate size distribution (ASD) of silica by using a disc centrifuge according to the principle of sedimentation. As pre-stage the silica is de-agglomerated in water using strong ultrasonic power treatment. The method is used for precipitated silica.
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