The mechanism of white carbon black in improving the wear resistance of silicone mainly involves the interaction between its physical and chemical properties and silicone materials. The following is a detailed explanation of this mechanism:

1. Physical effect
Filling and reinforcement:
As a porous substance, white carbon black particles can fill the gaps in the silicone material to form a tighter structure.
This filling effect can reduce the defects in the silicone material, thereby improving its overall wear resistance.
Increasing tear strength:
White carbon black can increase the tear strength of silicone materials, which means that silicone materials are less likely to tear or break when subjected to external forces.
However, it is worth noting that as the amount of white carbon black increases, the wear resistance of the rubber may decrease, so the amount needs to be reasonably controlled.

2. Chemical effect
Cross-linking reaction:
White carbon black can react chemically with the vulcanizer and cross-linking agent in the silicone to form a cross-linked structure.
This cross-linked structure can enhance the overall performance of the silicone material, including wear resistance.
Enhance chemical corrosion resistance:
Through the reaction with vulcanizers and cross-linking agents, white carbon black can also improve the chemical corrosion resistance of silicone materials.
This allows silicone materials to remain stable in environments such as acids, alkalis and solvents, thereby indirectly improving their wear resistance.

3. Comprehensive effect
Improve overall performance:
The addition of white carbon black can not only improve the wear resistance of silicone, but also improve its mechanical properties, heat resistance and UV resistance.
These performance improvements work together on silicone materials, making them exhibit excellent wear resistance in various environments.
Optimize formulation and cost:
By reasonably adjusting the amount and formulation of white carbon black, the performance of silicone materials can be further optimized.
At the same time, as a relatively cheap material, white carbon black can reduce the production cost of silicone materials to a certain extent.

In summary, the mechanism by which white carbon black improves the wear resistance of silicone mainly involves physical filling and reinforcement, chemical cross-linking reaction and improvement of comprehensive performance. However, it should be noted that the amount of white carbon black should be controlled within a reasonable range to avoid negative effects on the wear resistance of silicone materials.