Hydrophilicity To put it simply, white carbon black has not been treated, and it is easy to absorb water in the air. White carbon black is divided into powder and particles, and the price is low.


Hydrophobicity refers to that white carbon black has been treated on the surface and is not easy to absorb moisture in the air. It is used for coatings and paints at a high price.


In the coating, white carbon black can play the role of anti precipitation and thixotropic agent.

In fact, hydrophilic silica can also be used in oily coatings, and hydrophobic silica can also be used in hydrophilicity.

The difference between hydrophobicity and hydrophilicity in white carbon black mainly lies in:


Hydrophobic, which can keep the coating surface dry after film formation. High grade coatings generally use hydrophobicity, especially coatings with metal as the substrate. This is basically hydrophobic white carbon black, which can keep the substrate from oxidation, so hydrophobicity is more expensive than hydrophilic coatings.