Rubber compounding ingredients — Precipitated silica — Determination of aggregate size distribution by disc centrifuge
NORMA vydaná dňa 25.10.2019
Označenie normy: ISO 20927:2019
Dátum vydania normy: 25.10.2019
Počet strán: 14
Približná hmotnosť: 42 g (0.09 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.