ISO 20927:2019

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

Publication date: Oct 25, 2019

General information

Current stage: 90.93 Effective date: Jun 14, 2024

Originator: ISO

Owner: ISO/TC 45/SC 3

Type: International Standard

ICS: 83.040.20

Languages: English

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Status: Published

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 20927:2019
90.93 Standard confirmed
Jun 14, 2024