Snowfield tire sidewall rubber material composition and preparation method

Abstract

The invention belongs to the technical field of tires with special properties, and particularly relates to a snowfield tire sidewall rubber material composition and a preparation method. The snowfield tire sidewall rubber material composition is prepared from 20-30 parts of styrene-butadiene rubber, 40-60 parts of natural rubber, 20-30 parts of butadiene rubber, 30-50 parts of nanoscale sheet filler, 5-10 parts of white carbon black, 2-3 parts of zinc oxide, 4-10 parts of stearic acid, 4-5 parts of anti-ageing agent 4020, 2-4 parts of aromatic oil, 1.5-2.5 parts of sulfur, 0.5-1.2 parts of accelerant NS and 10-16 parts of tackifying resin. By means of the technical scheme, the ozone aging resistance and the flex crack resistance of rubber materials can be greatly improved without influencing the existing physical and mechanical properties of the rubber materials.

Description

technical field [0001] The invention belongs to the technical field of tires with special performance, in particular to a snow tire sidewall compound composition and a preparation method. Background technique [0002] The tire sidewall deforms greatly during use, and the flex cracking and ozone aging of the rubber are the main reasons for its damage. The present invention aims to improve the flex cracking resistance and ozone aging resistance of the sidewall rubber, thereby Improve tire life. [0003] Improving the flex cracking resistance and ozone aging resistance of tire sidewall rubber has always been a research topic for tire formula workers. At present, some studies have shown that using part of ethylene-propylene rubber in tire sidewall rubber can effectively improve the rubber compound. Ozone aging resistance. There are some disadvantages in using some ethylene-propylene rubber in the sidewall: 1. It is difficult to achieve co-vulcanization of ethylene-propylene ru...

AI Technical Summary

Problems solved by technology

There are some disadvantages in using some ethylene-propylene rubber in the sidewall: 1. It is difficult to achieve co-vulcanization of ethylene-propylene rubber and natural rubber, resulting in a decrease in the strength of the rubber compound

The sidewall of the tire is easily damaged when it is subjected to external force; 2. The use of ethylene-propylene rubber can only improve the ozone aging resistance of the tire sidewall, but cannot improve its flex cracking performance; 3. When natural rubber and ethylene-propylene rubber are used together Generally, segmental mixing is required, the mixing steps are cumbersome, the mixing time is long, and the economic benefit is low

However, for special performance tires, the research is even less