Four-season all-steel ice and snow tire tread rubber composition

Abstract

The invention relates to the technical field of tire rubber, in particular to a four-season all-steel ice and snow tire tread rubber composition. The composition comprises the following steps, by weight, after mixing: 10-30 parts of natural rubber, 10-35 parts of liquid rubber, 65-80 parts of functionalized solution polymerized styrene-butadiene rubber, 5-25 parts of carbon black, 20-55 parts of white carbon black with a low specific surface area, 4.0 -12.0 parts of a silane coupling agent ranges, 1.5-3.0 parts of white carbon black dispersing agent, 2.0-5.0 parts of zinc oxide, 1.0-3.0 partsof stearic acid, 1.0-3.0 parts of an anti-aging agent 4020, 1.5-2.5 parts of an anti-aging agent RD, 1.0-4.0 parts of rubber protective wax, 1.5-2.5 parts of sulfur S-80, 1.0-3.5 parts of tear-resistant resin, 1.0-2.5 parts of an accelerant NS-80 and 0-0.5 part of an accelerant DPG-80. The tire tread produced by the invention not only has excellent snowfield grip on a snowfield pavement, but alsokeeps excellent grip on an all-ice pavement, and has excellent rolling resistance, wet skid resistance and wear resistance.

Description

technical field [0001] The invention relates to the technical field of tire rubber, in particular to a tread rubber composition of a four-season high-performance all-steel ice and snow tire. Background technique [0002] As we all know, the winter temperature in northern my country is usually below -20°C, especially in Russia, northern Europe and other regions. The winter snow season is long, and the grip of ordinary all-season tires on the ground is greatly reduced, especially when the tires are in contact with ice. The friction between the tire and the road surface almost disappears, and it is prone to sideways sliding, which is very prone to accidents. Tire companies have launched all-steel heavy-duty snow tires with different tread rubber compositions. Compared with all-steel all-season tires, the tread of snow tires has low tread rubber hardness, low temperature resistance, and better snow traction. [0003] Due to the "magic triangle" mode in the design of tire perform...

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Problems solved by technology

[0003]Because there is a "magic triangle" mode in the design of tire performance in terms of wet skid resistance, wear resistance and low rolling resistance characteristics, when designing snow tread formula When the formula is designed with low hardness and soft rubber, the wear resistance and rolling resistance of the tire are greatly reduced. However, the requirements for the use of all-steel snow tires and semi-steel snow tires are different, and all-steel tires have a large load capacity. After winter, they will not switch to all-season tires but continue to use snow tires. The traditional snow tire formula cannot meet the wear performance and rolling resistance performance of all-season use. At the same time, the design of all-steel truck tires and semi-steel car tires will be affected by There are certain differences and connections between the load, function and driving speed, and the design focus of the two will be different

[0004] At present, there are reports on the research on all-steel snow treads. Patent CN105037824B has invented a special tread rubber composition and optimized formula ratio, which can The tire has superior snow skid resistance and snow grip adhesion in severe cold and harsh snow environment, and improves the driving performance and driving safety of snow-specific tires. The patent does not report the wear resistance of snow treads performance and rolling resistance performance

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