Tread rubber composition of all-steel truck snow tire

Abstract

The invention discloses a tread rubber composition of an all-steel truck snow tire. The tread rubber composition is characterized by being composed of, by weight, 42-62 parts of natural rubber, 15-35 parts of oil-extended neodymium-based butadiene rubber, 25-34 parts of solution-polymerized styrene-butadiene rubber, 23-38 parts of high-dispersion white carbon black, 30-55 parts of carbon black N220, 2-4 parts of coupling agent liquid Si69, 1-10 parts of aromatic oil, 2-8 parts of zinc oxide, 0.5-3 parts of stearic acid, 2-4 parts of antiager 6PPD, 1.5-3 parts of antiager RD, 2-5 parts of microcrystalline wax, 1-3.5 parts of oil-extended sulfur, 1-2.5 parts of accelerator NS, 0.1-1 part of accelerator DPG and 0.1-0.5 part of scorch retarder CTP. By the adoption of the solution-polymerized styrene-butadiene rubber with the Tg appropriate to that of natural rubber, the neodymium-based rare-earth butadiene rubber with the lower Tg and white carbon black commonly used for semi-steel snow tires, at a specific proportion, the tire is moderate in tread hardness and good in elasticity, and has the advantages of excellent snow slip resistance, good snowfield road holding, high snowfield indexes and the like in a freezing snowfield.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an all-steel truck snow tire tread rubber composition, in particular to a special tire tread rubber composition suitable for severe cold snow conditions below -30°C. Background technique [0002] In regions with high latitudes and cold winter climates, especially in northern Europe, North America and Russia, there is heavy snowfall in winter and a long snow season. This complex road condition brings a lot of inconvenience to car owners. Faced with such snowy road conditions, ordinary all-season tires (all-season tires) can no longer meet the needs of normal driving of vehicles, so it is necessary to develop tires suitable for snowy road conditions to ensure good braking maneuverability. [0003] When designing snow tires, adding metal studs to the tread can in principle enhance the snow grip of the tires, but this will seriously damage the road surface, and such tires are banned i...

AI Technical Summary

Problems solved by technology

[0002] In areas with high latitudes and cold winter climates, especially in northern Europe, North America and Russia, the amount of snowfall in winter is large and the snow season is long. This complex road condition has brought a lot of inconvenience to car owners.

Faced with such snowy road conditions, ordinary all-season tires (all-season tires) can no longer meet the needs of normal driving of vehicles, so it is necessary to develop tires suitable for snowy road conditions to ensure good braking maneuverability

[0003] When designing snow tires, adding metal studs to the tread can in principle enhance the snow grip of the tires, but this will seriously damage the road surface, and such tires are banned in most countries or regions.

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