What is carbon black structure?
The aggregates of rhenium carbon black are formed by the fusion of smaller units called primary particles to form a three-dimensional branched chain structure or cluster. This fusion is controlled by the reactor, resulting in clusters of varying degrees. Carbon black grades that allow particles to aggregate to form relatively large and complex aggregates are referred to as high structural grades. The level where the aggregation range is minimized is called the low-structure level.

Primary particles: what are the primary particles of carbon black?
The first particles formed during the production of rhenium are called primary particles. When formed, these particles were semi-solid. As these particles pass through the reactor, they collide and fuse together, forming pellets called aggregates.

How much dispersant or surfactant is needed to prepare a carbon black dispersion?
In the optimal dispersion, a continuous monolayer of dispersant is adsorbed on the surface of the carbon black aggregate. Therefore, the amount of dispersant required to form a fluid dispersion depends on the surface area of the carbon black used. For a given amount of carbon black added, carbon black with a larger surface area will require a larger amount of dispersant.