Inner sizing material for high speed low heat car tire tread and preparation method thereof

Abstract

The invention relates to an inner sizing material for a high speed low heat car tire tread and a preparation method thereof. The inner sizing material comprises the following components in parts by weight: 65-75 parts of natural rubber, 25-35 parts of rare-earth polybutadiene rubber, 35-45 parts of carbon black, 25-35 parts of white carbon black, 4-6 parts of an active agent, 1-1.2 parts of a lubricating agent, 4-5.6 parts of a coupling agent, 3-4 parts of an anti-aging agent, 1.8-2.2 parts of super tackifying resin and 3.2-3.6 parts of a vulcanizing agent. According to the inner layer formula design of the tire tread provided by the invention, low heat generation, relatively good adhesiveness with other parts, fatigue resistance and low possibility of damage are considered, and rare earth high cis butadiene with a large proportion is adopted, so that the tire is good in flexibility, fatigue-resistant and low in heat generation; natural rubber which has the characteristic of relatively low heat generation, and is quite good in intermiscibility and adhesiveness with other parts is used in a relatively large amount.

Description

technical field [0001] The invention relates to a high-speed low-heat car tire tread inner rubber material and a preparation method thereof, belonging to the field of rubber processing. Background technique [0002] The normal damage of genuine tires mainly has three aspects: tread wear, aging and internal heat generation. Rubber tires are poor conductors of heat. How to reduce the heat generated inside the tire is one of the difficult problems faced by tire designers. The problem of tire heat generation plays a vital role in the service life and high-speed durability of tires. The main part of the tire that generates heat and is not easy to dissipate is the lower layer of the tread, the center part where the rubber is thicker. The existing tread rubber material is made of the same formula and the same rubber material, and the tread rubber formula is all focused on considering its wear resistance, low rolling resistance and grip. Due to the consideration of these external...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-speed low-heat car tire tread inner rubber material and a preparation method thereof, which solves the problems of serious heat generation inside the existing tire and affects the life of the tire, etc.