With the addition of white carbon black, under dynamic stress-strain conditions, the relative movements between rubber macromolecular chains, rubber molecular chains and filler particles, and filler particles are not synchronized. The friction between the particles is a small friction between the structures, and the friction between the filler particles is at least a nano-scale particle friction. In contrast, the addition of the filler makes the friction more intense, which leads to a significant increase in the overall dynamic heat generation of the rubber compound.

The effect of filler on the dynamic properties of rubber compounds mainly comes from the following two aspects: the contact interface between filler and rubber molecules and the amount of filler. Generally speaking, the smaller the particle size of the filler, the larger its specific surface area, and the larger the surface energy. The more likely it is to agglomerate to reduce the surface energy, the more difficult it is to disperse the filler after agglomeration, the worse the dispersibility, and the more dynamic the rubber compound becomes. No, the greater the heat generation, the more easily the product interior will be damaged by high temperature ablation during use; the greater the amount of filler, the more friction parts between the filler particles and the rubber molecules, and the greater the dynamic heat generation.

As the amount of silica is increased, the compression heat generation of NR / silica black compounds increases rapidly. This is due to the severe agglomeration of silica in NR compounds. Under dynamic action, friction between fillers Dominate. When the amount of white carbon black is 20 parts, the heat generation of NR rubber is larger than ENR25 rubber and lower than ENR40 rubber. Without the use of any coupling agent, white carbon black has obvious agglomeration in NR matrix, With the introduction of epoxy groups in the NR molecular chain, the agglomeration of silica is significantly suppressed, and the higher the content of epoxy groups, the better the dispersibility of silica. ENR / silica black compounds have good anti-slip properties and low rolling resistance; after the amount of silica is greater than 20 parts, the compression heat of ENR / silica black compounds is significantly lower than that of NR / silica black Rubber, which is of great significance for high-performance green tires.