Surface modification technology of white carbon black: key to improving performance
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The surface of white carbon black is rich in hydroxyl groups, prone to aggregation, and has poor compatibility with organic compounds. It needs to be modified to optimize its performance
Silane coupling agent modification:
Principle: Silane molecules react with hydroxyl groups on the surface of white carbon black to form chemical bonds.
Effect: Improve dispersibility in rubber and enhance reinforcement effect.
Polymer graft modification:
Method: Polyvinyl alcohol and other materials were grafted onto the surface through free radical polymerization.
Application: Improve leveling in coatings and prevent settling.
Nano coating technology:
Coating white carbon black with titanium dioxide to provide UV shielding function, used for sunscreen cosmetics.
