Anti-aging, tearing-resistant and crack growth-resistant rubber composition for all-steel tire sidewall and preparation method and application thereof

Abstract

The invention discloses an anti-aging, tearing-resistant and crack growth-resistant rubber composition for an all-steel tire sidewall and a preparation method and an application thereof, and relates to the technical field of rubber materials for tires. The rubber composition comprises the following raw material components in parts by weight: 40-60 parts of natural rubber, 40-60 parts of cis-butadiene rubber, 40-55 parts of carbon black, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-2 parts of protective wax, 2-5 parts of an anti-aging agent, 1-4 parts of tackifying resin, 1-3 parts ofprocessing oil, 0.5-1 part of sulfur, 1-3 parts of an accelerator, 1-2 parts of a homogenizer, and 0.1-0.2 part of an antiscorching agent CTP. Based on an ordinary tire sidewall formula, N220 pure carbon black with finer particle size and higher structure is used as a filling system, and the filling amount is improved to ensure the tear resistance of rubber, at the same time, the vulcanization system is adjusted, the vulcanization crosslinking is guaranteed to be dominated by single sulfur bond, and thus the heat aging resistance and the crack growth resistance are improved.

Description

technical field [0001] The invention relates to the technical field of rubber materials for tires, in particular to an aging-resistant, tear-resistant and crack growth-resistant rubber composition for all-steel sidewalls, a preparation method and application thereof. Background technique [0002] Tires are one of the important parts of the car. They are in direct contact with the road surface, and work together with the car suspension to ease the impact of the car while driving, ensuring that the car has good seating comfort and smooth driving; ensuring that the wheels and the road are in good condition The adhesion of the tire improves the traction, braking and passability of the car; bearing the weight of the car, the important role played by the tire on the car has attracted more and more attention. Automobile tires are especially important in the use of automobiles. Automobile tires are related to the safety performance of automobiles. As the outer part of the tire, the...

AI Technical Summary

Problems solved by technology

This solution improves the thermal conductivity of the tire sidewall, reduces the heat generation of the sidewall compound, and improves the aging performance of the tire sidewall, but cannot take into account the tear performance

[0004] It is inevitable that sidewall scratches and cracks will appear during tire running. At the same time, the sidewall cracks will expand during the reciprocating flexing deformation process. If the cracks extend to the carcass cord, it will affect the service life and retreadability of the tire.

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