Tire apex composition for improving bond system and its preparation method and application

Abstract

The invention relates to the tire manufacture field, especially to a tire apex composition for improving a bond system and its preparation method and application. The tire apex composition for improving the bond system is formed by the mixing of the following ingredients of: by weight, 70-100 parts of natural rubber, 0-30 parts of styrene-butadiene rubber, 55-75 parts of carbon black, 1.0-4.0 parts of resorcinol, 0.2-3.0 parts of cobalt decanoate, 3-8 parts of a methylene donator adhesive, 0-20 parts of white carbon black, 3-8 parts of a vulcanizing agent and a sulfuration promoter and other processing auxiliary agents. The tire apex composition for improving a bond system obviously raises modulus and binding property, decreases heat generation, minimizes modulus loss at high temperature,and simultaneously reduces formula cost. By employing BTR tires under the precondition of unchanged structure, the hard apex strength and hardness can be guaranteed not to be decreased, the modulus is substantially increased, the bond performance between the apex and steel wires / steel wire cords is remarkably improved, and the anti-destroy performance of tire bead positions is raised.

Description

technical field [0001] The invention relates to the field of tire manufacturing, in particular to a tire apex composition and a preparation method and application thereof. Background technique [0002] As the main function of carrying load and driving the tire, the rim part of the tire is subject to strong mechanical shearing, which can easily lead to damage and disease phenomena such as rim explosion, rim emptying, rim cracking, and rim delamination. It is the main reason for the short service life, high return rate and low retreading rate of major tire companies in the market, and it is also the goal that has been committed to solving. In terms of design, the development and application are mostly adjusted by matching the component structure and the rubber modulus. [0003] In the technical field of production of all-steel radial truck tires, achieving high load capacity, high-speed driving, high refurbishment rate, low accidents, and long service life is the goal that ha...

AI Technical Summary

Problems solved by technology

Because of its direct or indirect contact with the steel wire, it will cause the migration of the adhesive in the adhesive compound and reduce the bonding performance of the adhesive compound. Migration will also reduce the adhesive performance and cause delamination damage to the tire.