Highly filled white carbon black tread rubber having good electric and thermal conductivity and used for pneumatic tire

Abstract

The invention discloses highly filled white carbon black tread rubber having good electric and thermal conductivity and used for a pneumatic tire. The highly filled white carbon black tread rubber is prepared from, by weight, 60-80 parts of solution polymerized butadiene styrene rubber, 20-40 parts of butadiene rubber, 50-80 parts of white carbon black, 5-10 parts of carbon black, 8-12 parts of silane coupling agent, 3-12 parts of modified conductive composite material, 3-5 parts of resin, 2-4 parts of zinc oxide, 0.5-2.5 parts of stearic acid, 0.5-2.5 parts of sulfur, 0.5-1.8 parts of accelerant and 4-7 parts of other components. The highly filled white carbon black tread rubber uses the modified conductive material, meanwhile the packing ratio and a rubber mixing process are reasonably adjusted, on the basis that the original features of the rubber material are not changed, the electric and thermal conductivity of the rubber is remarkably improved, static electric shock or fire hazards and other potential safety hazards are avoided, the durability of the tire can be also improved, and the service life of the tire can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of automobile tire materials, in particular to a white carbon black tread rubber filled with good electrical conductivity and high thermal conductivity for pneumatic tires. Background technique [0002] As early as the 1940s, someone discovered the phenomenon of static electricity at the interface between the tire and the road. During the driving process of the car, due to the friction between the vehicle and the air, the vehicle will accumulate a certain amount of static charge. If these static charges are not exported in time, It may cause safety hazards such as static shock or fire. Vehicle static electricity is mainly introduced to the ground through tires. However, in order to meet the technical index requirements of European labeling law on tire wet performance level and rolling resistance level, it is necessary to use a compound with a high proportion of white carbon black, and the resistivity of this...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem of poor electrical conductivity and thermal conductivity of the rubber compound existing in the prior art, the purpose of the present invention is to provide a tread rubber for pneumatic tires that has good electrical conductivity and thermal conductivity and is highly filled with silica. Innovatively used modified conductive composite materials, and at the same time rationally adjusted the amount of fillers, so as to significantly improve the electrical and thermal conductivity of the rubber on the basis of the original performance of the rubber.

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