The factors and solutions affecting the rubber resilience and vulcanization speed can be carried out from the following aspects:

Insufficient vinyl content in the rubber or uneven distribution of vinyl content in the raw rubber make the rubber fail to reach the positive sulfur point during vulcanization, the vulcanization speed is too long and the vulcanization is insufficient, resulting in poor elasticity of the rubber. Poor resilience and slow vulcanization speed can be solved by increasing the overall vinyl content in the compound, adding an appropriate amount of hydrogen containing silicone oil in the formula, reducing the amount of filler and increasing the amount of compound; Different types of raw rubber with vinyl content can also be used together with a small amount of high vinyl raw rubber to control the breaking and permanent deformation of the rubber. An optimal balance point should be found in the formula to avoid brittleness of the rubber, so as to improve the elasticity of the rubber.

The acidity of the compound itself is also an important factor leading to poor resilience and slow vulcanization speed. Due to the acidity of silica itself and the acidity of the added structure control agent, the compound is acidic. The acidic compound can delay the vulcanization and reduce the high temperature resistance. The acid content of the compound can be improved by adding appropriate weak alkaline substances. Generally, the pH value of the compound is in the neutral or weak alkaline range, which is good for improving the elasticity and vulcanization speed.

Other aspects: excessive addition of plasticizer or structure control agent in the compound leads to poor resilience and slow vulcanization speed of the compound; Too much plasticizer or structure control agent is added in the rubber, which will delay the vulcanization of the rubber, resulting in poor resilience and slow vulcanization speed. Raw rubber with narrow molecular weight distribution and certain volatile matter can be selected to improve the demoulding of the rubber, so as to reduce the amount of plasticizer; The surface of white carbon black is treated with alkoxysilane and used with hydroxyl silicone oil. The two-step method is adopted to allow a certain combination reaction time between white carbon black molecules and raw rubber molecules. In the process, curing can be adopted to reduce the amount of structure control agent and improve the resilience and vulcanization speed of rubber.

At the same time, establishing a standard vulcanization curve for each type of compound is also a means to control the stable production quality of compound.