Aviation radial tire belted layer protective layer hanging rubber and preparation method thereof

Abstract

The invention discloses an aviation radial tire belted layer protective layer hanging rubber and a preparation method thereof. The hanging rubber takes domestic high-end natural rubber and butadiene styrene rubber as a raw rubber system; n339 carbon black, precipitated white carbon black, a novel silane coupling agent, insoluble sulfur, a sulfenamide accelerator and a novel m-, A-and white bonding system are added as main auxiliary materials, and a certain mixing process is carried out according to a certain proportion to prepare the flame-retardant coating. The rubber material disclosed by the invention is low in compression fatigue temperature rise, high in tensile strength and elongation at break, and good in bonding performance with aramid cord threads, and is used for a belted layer protection layer taking para-aramid as a fiber framework material; the aviation radial tire does not have the quality problems of debonding between the rubber matrix and the aramid cord thread and between the belted layer protective layer rubber and the belted layer rubber / tread rubber under the harsh use conditions of high load and high speed, and the puncture resistance of the tire and the stability of the tire in a high-speed state are greatly improved.

Description

technical field [0001] The invention relates to the fields of rubber processing and aviation tire manufacturing, in particular to an aviation radial tire belt protective layer hanging glue and a preparation method thereof. Background technique [0002] Aeronautical radial tires have the characteristics of thin carcass, light weight, fast heat dissipation, high use speed, and more wear-resistant tread. In order to meet the harsh service conditions of the radial tire against the high load and high-speed impact of the aircraft during take-off and landing, and to improve the tire's resistance to foreign object puncture and mechanical damage, the tire structure can be designed between the belt layer and the tread compound. A layer of belt protection. The protective layer not only acts as the anti-puncture layer of the tire, it effectively improves the anti-puncture performance of the aviation radial tire, and tightens the belt layer to limit the centrifugal force generated by th...

AI Technical Summary

Problems solved by technology

However, since there are many large aromatic rings on the aramid macromolecular chain, the active group amide group is shielded by the steric hindrance of the aromatic nucleus, and its surface lacks chemically active functional groups, resulting in poor adhesion between aramid and rubber. Therefore, it is necessary to improve the bonding performance of aramid fiber and rubber interface

[0005] In addition, aviation tires are used in a complex thermal alternating environment, the material is prone to aging, the adhesive performance of the rubber matrix and the aramid fiber decreases, the mechanical properties of the rubber matrix deteriorate, and it is easier to cause the rubber matrix to separate from the aramid fiber material, causing the tire to appear. Delamination of belt layer protection layer and tread rubber / belt layer, etc. affect the safety of aviation radial tires

[0006] So far, there are few published patents and literature related to the patent on rubber coating of the belt layer protective layer of aviation radial tires.

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