The composition of the dispersant for white carbon black is generally something with dispersion and surface activity, such as organic silicon.
There are several types of dispersants for white carbon black according to their uses, including dispersants for rubber-grade white carbon black fillers, polyethylene glycol dispersants for white carbon black, white carbon black emulsion dispersants, dispersants for tire-grade white carbon black, slurry dispersants for white carbon black, and water-based white carbon black dispersants.
Examples of white carbon black dispersants include HST dispersant, HT207 dispersant, Kaoline white carbon black dispersant, CSP908 dispersant, Rhein white carbon black ST dispersant, XT-4 dispersant, RL-16 dispersant, TYC0544 dispersant, A200 white carbon black dispersant, and BYK dispersant.
The working principle of white carbon black dispersants includes:
The dispersant is adsorbed on the surface of the solid particles, making it easier for the agglomerated solid particle surface to be wetted.
Polymer-type dispersants form adsorption layers on the surface of solid particles, increasing the surface charge of the solid particles and enhancing the repulsive force between particles that form steric hindrance.
The dispersant causes a double molecular layer structure to form on the surface of the solid particles, with the polar end of the outer layer having a strong affinity for water, increasing the degree to which the solid particles are wetted by water. The solid particles move away from each other due to electrostatic repulsion.
The system becomes uniform, the suspension performance increases, and it does not settle, ensuring the physical properties of the entire system are the same.
In summary, the use of white carbon black dispersants can stably disperse solid particles in liquid, preventing precipitation from occurring. It should be noted that the working principle of white carbon black dispersants may vary depending on the specific type of dispersant and its application field.