A semi-steel car snow tire tread rubber composition

Abstract

The invention relates to a rubber composition for a tread of a semisteel snow tyre of a car. The rubber composition is prepared from the following raw materials in parts by weight: 30-50 parts of natural rubber NR, 5-20 parts of low cis-BR (Butadiene Rubber), 12-30 parts of solution polymerized styrene-butadiene rubber (SSBR), 2-6 parts of zinc oxide, 0.6-1.6 parts of stearic acid, 0.5-1.5 parts of an antiaging agent 4010NA, 0.5-1.5 parts of an antiaging agent 124, 40-55 parts of carbon black N234, 20-30 parts of carbon black N339, 30-40 parts of white carbon black, 1-6 parts of aromatic oil, 2-8 parts of octyl oleate, 4-9 parts of a silane coupling agent Si-69, 0.4-1.2 parts of an accelerant DM, 0.2-0.8 part of an accelerant D, 0.4-1.6 parts of an accelerant NS, 1-2.6 parts of an accelerant CZ, 0.8-2.4 parts of sulfur, 2.4-8.4 parts of a Carbamate crosslinking agent, 0.05-0.15 part of a scorch retarder and 0.5-1.5 parts of microcrystalline wax. By adding a certain amount of low cis-BR and carbon blacks in two different models, the rubber composition not only has excellent physical properties, but also has excellent cold resistance. Meanwhile, the road holding performance of the tyre on the ice surface can be effectively improved while the operating performance of the tyre is not reduced.

Description

technical field [0001] The invention relates to a tire tread rubber composition, in particular to a semi-steel car snow tire tread rubber composition, which belongs to the technical field of rubber. Background technique [0002] With the rapid development of the automobile industry, people have higher and higher requirements for the performance of tires, and a single all-season tire can no longer meet the needs of the current market segment, especially in winter, most of our northern regions often encounter snow and ice Under such weather conditions, ordinary tires can no longer meet the needs of normal driving and braking of vehicles. Winter tires are precisely designed for this kind of weather, which can improve the walking, braking and steering capabilities of the tires on ice and snow roads, and effectively guarantee the safety of drivers and pedestrians. In some countries of the European Union, the use of snow tires in winter has become a legal requirement. [0003] T...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the automobile industry, people have higher and higher requirements for the performance of tires, and a single all-season tire can no longer meet the needs of the current market segment, especially in winter, most of our northern regions often encounter snow and ice Weather, under such climatic conditions, ordinary tires can no longer meet the needs of normal driving and braking of vehicles.