Bulldozer tire tread rubber and preparation method thereof

Abstract

The invention belongs to the technical field of tire rubber, and particularly relates to bulldozer tire tread rubber and a preparation method thereof. the bulldozer tire tread rubber comprises, by weight, 60 parts of oil-extended natural rubber, 30 parts of cis-1,4-polybutadiene rubber, 10 parts of rubber powder, 25-35 parts of carbon black N, 15-25 parts of titanium dioxide, 13-15 parts of tall oil modified phenolic resin, 3.0-3.6 parts of asphalt, 0.5-1.5 parts of wet-process zinc oxide, 1.2-1.4 parts of double-peak protective wax, 1.1-1.4 parts of anti-ager JOL, 0.5-1.0 part of promoter NOBS and 3.0-3.4 parts of sulfur. By using the bulldozer tire tread rubber, cold resistance of tires is improved, and the problem that the tires are prone to cracking in cold regions and cold seasons is improved.

Description

technical field [0001] The invention belongs to the technical field of tire rubber, and in particular relates to a bulldozer tire tread rubber and a preparation method thereof. Background technique [0002] With the acceleration of my country's agricultural modernization process, the demand for agricultural machinery and equipment continues to increase. Agricultural tires used in winter and spring in Northeast China often have cracking problems. Through on-the-spot visits, on-site investigation of the use and environment of winter tires, and analysis of the problem tires, it is concluded that: Northeast China is cold in winter, the temperature difference between day and night is large, and the brittle temperature of the tread rubber is high. The rubber material has not been completely decrystallized, so it is prone to cracking; secondly, due to the long winter time, the annual slack period is generally 4 to 5 months, and the tires are in a long-term inflated parking state, ...

AI Technical Summary

Problems solved by technology

Through on-the-spot visits, on-site investigation of the use and environment of winter tires, and analysis of the problem tires, it is concluded that: Northeast China is cold in winter, the temperature difference between day and night is large, and the brittle temperature of the tread rubber is high. The rubber material has not been completely decrystallized, so it is prone to cracking; secondly, due to the long winter time, the annual slack period is generally 4 to 5 months, and the tires are in a long-term inflated parking state, which causes stress concentration and promotes surface aging. , speeding up the growth of cracks; in addition, because the tires are stored in the open air, they cannot be well maintained, which will also cause cracks