Standard Test Method for Silica, Precipitated, Hydrated—Electrical Conductivity

Importancia y uso:

4.1 The electrical conductivity of silica is related to both the adsorbed water and the hydroxyl groups on the surface of the precipitated, hydrated silica. Since the electrical conductivity of distilled or de-ionized water is very low, high electrical conductivity values are associated with ionic sources due to impurities.

4.2 A specific quantity of the silica sample is boiled in distilled or deionized water. After cooling to room temperature, the suspension is diluted to 4 % mass per volume (m/V) and its temperature is adjusted to 20 °C with a thermostat. The electrical conductivity is measured using a conductivity meter and a conductivity cell.

Subcomité:

D11.20

Referida por:

D5900-23

Volúmen:

09.01

Número ICS:

83.040.20 (Rubber compounding ingredients)

Palabras clave:

electrical conductivity; silica;