Low rolling resistance tire rubber composition and application thereof

Abstract

The invention provides a low rolling resistance tire rubber composition and application thereof. The composition is prepared from the following ingredients in percentage by weight: 10 to 35 percent ofsolution polystyrene-butadiene rubber, X percent of emulsified polystyrene-butadiene rubber (X is greater than 0 but smaller than or equal to 25), Y percent of cis-rich polybutadiene (Y is greater than 0 but smaller than or equal to 15), 2 to 25 percent of reinforcing carbon black, 10 to 40 percent of silicon dioxide filling materials, 6 to 15 percent of silane coupling agents, Z percent of hydrocarbon resin (Z is greater than 0 but smaller than or equal to 5), 2 to 18 percent of enhancing system containing amorphous silica spherical particles, fatty acid zinc salt and processing oil. All ingredients jointly act in a certain proportion, so that the tire rubber composition can improve the tire rolling resistance and the workability; good performance compromise is realized on rolling resistance, road holding force and abrasion performance; the problem that the workability is difficult when the use quantity of reinforcing fillers is high can be solved; the low rolling resistance tire rubber composition is particularly suitable for being applied to high-performance tire tread rubber.

Description

technical field [0001] The invention relates to the technical field of tire rubber, in particular to a tire rubber composition with low rolling resistance and its application. Background technique [0002] In recent years, with the rapid development of my country's economy, the use of automobiles has increased rapidly, and the pollution of the environment has become increasingly serious. Among them, how to reduce carbon emissions and energy consumption is a common challenge faced by all countries. For example, in the development of automobile tires, it is necessary to develop green tires with low hysteresis loss and wear resistance to meet the requirements of energy saving and carbon reduction. [0003] In the development of tire rubber compositions in the past, diene rubber such as natural rubber or butadiene rubber has lower hysteresis loss, and thus is widely used in fuel-efficient tires. Moreover, research has found that highly dispersed silica, as a reinforcing filler,...

AI Technical Summary

Problems solved by technology

[0004] However, in high-performance car tires, various properties such as grip and skid resistance, rolling resistance, and wear resistance often conflict with each other and cannot be balanced

The rolling resistance of tires is mainly due to the hysteresis loss of rubber; with the increasing use of silica as a filler, although good grip and wear resistance can be obtained, the increase in hysteresis loss is not conducive to tire rolling resistance

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