Tread rubber composition for semisteel meridian snow tire used in extremely cold area

Abstract

The invention relates to the technical field of rubber, and in particular relates to a tread rubber composition for a semisteel meridian snow tire used in an extremely cold area. By taking 100 parts by weight of rubber component as a reference, the tread rubber composition comprises the following components in parts by weight: 30-110 parts of high-dispersibility silicon dioxide, 5-70 parts of carbon black, 10-65 parts of rubber processing softener, 5-25 parts of silane coupling agent, 0-14 parts of anti-ageing agent, 0-10 parts of sulphur and 0-8.5 parts of promoter, wherein the rubber component comprises modified styrene-butadiene rubber, natural rubber and polybutadiene rubber, the modified styrene-butadiene rubber is solution-polymerized styrene-butadiene rubber containing 15-30wt% of combined styrene and 10-50wt% of vinyl; and the polybutadiene rubber is nickel polybutadiene rubber or a blended system of the nickel polybutadiene rubber and neodymium butadiene rubber, wherein percent by weight of cis-butadiene structure (cis) is more than 95%.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a semi-steel radial snow tire tread rubber composition used in extremely cold regions. Background technique [0002] As we all know, 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 some parts of the northern hemisphere, where the winter temperature can reach minus 40 Below the temperature, this requires the tire's cold resistance to be particularly outstanding in order to meet the use under such extreme conditions. [0003] The crown part of the passenger tire is the only grounding part of the tire, so the design of the low temperature resistant snow tread compound formula plays a key role in the cold resistance performance of the semi-steel radial tire. The snow tread compound formula not only requir...

AI Technical Summary

Problems solved by technology

[0002] As we all know, 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 some parts of the northern hemisphere, where the winter temperature can reach minus 40 Below the temperature, this requires that the cold resistance of the tire must be particularly outstanding in order to meet the use under such extreme conditions.

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