Deformation performance: White carbon black rubber has high hardness but low modulus (at 100%~300% elongation).
Tear strength: With appropriate formulation, white carbon black vulcanized rubber has higher tear strength (in terms of resistance to crack generation and growth). Adding reinforcing carbon black can improve tear resistance.
Adhesiveness: Precipitated white carbon black plays an important role in adhesive systems (RFS system). It acts as a catalyst in the resin generation reaction and strengthens the interaction between the resin and rubber.
Secondary heat resistance: The heat resistance of precipitated white carbon black vulcanized rubber is better than that of carbon black vulcanized rubber.
Weather resistance: Carbon black rubber is significantly better than light-colored filler rubber.
Dynamic strain: Compared with carbon black vulcanized rubber, white carbon black vulcanized rubber has a higher composite modulus and lower hysteresis loss. This is used in tire formulations by using a combination of carbon black and precipitated white carbon black with an appropriate amount of silane coupling agent. This combination significantly improves sulfur cure reversion resistance, tear resistance, and crack resistance, and can be further developed into an EC system, which is also known as a balanced vulcanization system.