Rubber composition for color truck radial tire tread

Abstract

The invention discloses a rubber composition for a color truck radial tire tread. The rubber composition comprises, by weight, 100 parts of a rubber matrix, 5-8 parts of an active agent, 40-80 parts of white carbon black, 4-8 parts of a silane coupling agent, 4-10 parts of light color rubber oil, 1.5-3.5 parts of an accelerator, 4-8 parts of an anti-aging agent, 1-2 parts of a vulcanizing agent, 5-8 parts of an antistatic agent, and 3-6 parts of a coloring agent, wherein the rubber matrix comprises a natural rubber and rare earth polybutadiene rubber, or comprises a natural rubber, rare earthpolybutadiene rubber and styrene butadiene rubber, the white carbon black is the high dispersible precipitated white carbon black, the accelerator is the combination of an accelerator CBS and an accelerator DPG, the anti-aging agent is the combination of three components of a non-polluting type light color antiozidant, a non-polluting type light color antioxidant and an anti-aging agent RD, the vulcanizing agent is sulfur, and the antistatic agent is a polyether antistatic agent. With the rubber composition of the present invention, the tensile strength of the prepared tread is 25 MPa, and the elongation at break is more than 500%. The rubber composition of the present invention is mainly used for the color truck radial tire tread.

Description

technical field [0001] The invention relates to a tire tread, including a rubber composition reinforced by white carbon black, in particular to a rubber composition used for the tread of a colored load-carrying radial tire. [0002] More specifically, the present invention relates to a rubber composition for treads of colored radial truck tires mainly colored by a colorant and reinforced with silica. Background technique [0003] In recent years, increasing fuel costs and enactment of environmental regulations have increased the need to improve fuel economy in the automotive industry. In terms of fuel economy, the tread rubber composition accounts for a large proportion of tire components. As is known, high speed, safety, comfort, energy saving, etc. have become the basic requirements for tire performance. It is expected that the tire has high grip (great friction between the tire and the ground, especially wet ground), low fuel consumption (small rolling resistance), low ...

AI Technical Summary

Problems solved by technology

Compared with black tires, the existing colored tires are not suitable for truck tires due to their poor wear resistance and short service life.

In addition, the tire tread rubber composition of the truck radial tire usually uses carbon black as the filling and reinforcing system. The application of silica in the tread rubber of the truck radial tire is to use it together with carbon black. The technology of using silica alone exists in mixing Difficulty, the physical and mechanical properties of rubber materials cannot meet the performance requirements of radial truck tires, etc.

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