Anti-reversion rubber composition

Abstract

The invention discloses an anti-reversion rubber composition. The rubber composition employs 100 parts of natural rubber as a reference substance, and also comprises 30-35 parts of carbon black, 6-9 parts of white carbon black, 4 parts of organosilicon mixture TESPT, 5 parts of zinc oxide, 2 parts of stearic acid and 1-2 parts of a fire retardant. The anti-reversion capability of a tyre shoulder wedge is improved, and the stability of mechanical properties such as tensile stress, hardness and the like of the rubber composition under the over-cure condition are guaranteed.

Description

technical field [0001] The invention relates to a rubber composition resistant to vulcanization reversion. Background technique [0002] As we all know, vulcanization reversion will have many adverse effects on vulcanized rubber, such as the decrease of physical properties, the decrease of crosslink density, the deterioration of dynamic properties and the increase of heat generation. The research and reversion of tire rubber mainly occurs during tire vulcanization and actual use. At present, the raw rubber in the formula of most rubber parts of all-steel radial truck tires is still mainly NR, and the vulcanization system is mostly ordinary sulfur vulcanization system. In order to ensure positive vulcanization inside the tire during the vulcanization process, different degrees of vulcanization regression will often occur on the outside of the tire. During the actual use of tires, due to the influence of factors such as high speed, overloading and complex road conditions, th...

AI Technical Summary

Problems solved by technology

[0002] As we all know, vulcanization reversion will have many adverse effects on vulcanized rubber, such as the decrease of physical properties, the decrease of crosslink density, the deterioration of dynamic properties and the increase of heat generation.