(1) The vinyl content in the rubber is not enough or the vinyl content of the raw rubber itself is not evenly distributed, so that the rubber does not reach the positive sulfur point when it is vulcanized, the vulcanization speed is too long, the vulcanization is not sufficient, resulting in bad elasticity of the rubber. By improving the overall content of vinyl in the rubber, and adding the right amount of hydrogen silicone oil in the formula, reduce the amount of filler to improve the amount of rubber to solve the problem of poor resilience and slow curing speed; It can also use different types of vinyl content of raw rubber, with a small amount of high vinyl raw rubber for use, control the tearing and permanent deformation of the rubber material, formula to find an optimal balance point, in order to avoid the brittle situation of the rubber material, to improve the elasticity of the rubber material.

(2) The compound itself is acidic, which is also an important factor leading to poor resilience and slow vulcanization speed of the compound. Because the white carbon itself is acidic, plus the structure of the control agent is more acidic, so that the compound is acidic, acidic compound has a delay effect on vulcanization, and the high temperature resistance will also decrease. The acid content of the compound can be improved by adding the appropriate weak alkaline substance. The PH value of the general compound in the neutral or weak alkaline range is beneficial to improve the elasticity and vulcanization speed.

(3) Other aspects: the plasticizer or structure control agent added too much glue, resulting in bad rubber resilience and curing speed is slow; Adding too much plasticizer or structure control agent in the compound will delay vulcanization of the compound, which will lead to poor recovery elasticity and slow vulcanization speed of the compound. The raw rubber with narrow molecular weight distribution and a certain volatile content can be selected to improve the release of the compound, so as to reduce the amount of plasticizer; The alkoxy silane is used to treat the white carbon black surface, and the hydroxyl silicone oil is used. The two-step method is used to make the white carbon black molecules and raw rubber molecules have a certain combination reaction time. The process can be adopted to maintain health, to reduce the amount of structure control agent, to improve the recovery elasticity and vulcanization speed of the rubber.

At the same time, each type of rubber to establish a standard vulcanization curve, is also a good control of mixing rubber production quality stability of a means.