GB/T 3780.2-2017Carbon black - Part 2: Determination of oil absorption number (English PDF)

3.1 instrument method

3.1.1

The degree of aggregation of carbon black particles affect the process of carbon black rubber compound, vulcanized rubber performance. Void volume of carbon black aggregate

Depending on the degree of aggregation of the carbon black particles and the void volume is obtained from the volume of oil absorbed by the carbon black, the carbon black oil absorption can be obtained as carbon black particles

A measure of the degree of sub-aggregation.

3.1.2

With a constant-speed buret oil is added to the carbon black sample in the oil absorption chamber mixing chamber, as the sample oil absorption increases, the mixed material from

The free-flowing state becomes a semi-plastic agglomerate and the viscosity of the mixture increases, which is transmitted to the torque sensing

System, when the viscosity of the mixture reaches a preset torque value, both the oil absorber and the constant speed burette are automatically shut off at the same time. From the constant speed burette directly

Read out the volume of oil added per unit mass of carbon black to absorb the volume of oil is the carbon black oil absorption value.

3.2 manual method

To a certain amount of oil droplets added to a certain amount of carbon black samples, with glass rods on the glass reconcile, stirring, rolling, so that the mixture from

Free-flowing state becomes a semi-plastic agglomerate. All of the carbon blacks have a predetermined shape, and can be entirely rolled onto a glass rod, and in the glass

No traces of oil on the board for the end.