Semi-steel radial tire cap strip rubber material suitable for extrusion method and preparation process thereof

Abstract

The invention belongs to the technical field of tire rubber, and particularly relates to a formula, a mixing process and an extrusion process of a semi-steel radial tire cap strip rubber material which is suitable for an extrusion method, low in heat generation and moderate in adhesiveness. The rubber material formula comprises standard particulate rubber, trans-polycyclooctene rubber, styrene butadiene rubber, low-structure high-wear-resistance carbon black, zinc oxide, stearic acid, an anti-aging agent 4020, a resorcinol or resorcinol formaldehyde adhesive, a methylene donor adhesive, a plasticizer A, a peptizer, insoluble sulfur with high thermal stability, an anti-scorching agent CTP and a sulfonamide accelerator. The cap strip rubber material prepared by the preparation process provided by the invention has the characteristics of low heat generation, moderate bonding performance with nylon cords, suitability for production of nylon cap strips by an extrusion method and the like, is few in use personnel and high in production efficiency, is directly used during molding, is easy to unwind in a rolling manner, is not easy to adhere, and is suitable for large-scale production. Thedefects that in the using process of the nylon cap strip cord fabric roll produced through a calendering method, the viscosity between layers is large, and separation is not easy can be effectively overcome.

Description

technical field [0001] The invention belongs to the technical field of tire rubber, and in particular relates to a low-heat-generating, moderate-adhesive semi-steel radial tire cap strip compound formula, mixing and extrusion process suitable for extrusion. Background technique [0002] At present, the formula of semi-steel tire cap strips mainly consists of natural rubber, styrene-butadiene rubber or butadiene rubber, carbon black, zinc oxide, stearic acid, anti-aging agent, adhesive, accelerator, sulfur and so on. At present, the production method of the nylon cap strips of domestic semi-steel radial tires is mainly the calendering method. After calendering, the large rolls need to be slit by multiple knives, and then wound into small rolls. Sticky, resulting in the phenomenon that the crown strips cannot be separated, and the small rolls of the crown strips cannot continue to be used. With the rapid development of the automobile tire industry, the speed grade and safety ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that the nylon crown strips of semi-steel radial tires produced by the calendering method in the prior art have many production processes, low production efficiency, high surface viscosity of the crown strips, and are not easy to peel off, the present invention proposes a method suitable for the extrusion method. Semi-steel radial tire crown strip compound and its preparation process. The crown strip compound prepared by this process has the characteristics of low heat generation, moderate adhesion with nylon cords, and is suitable for producing nylon crown strips by extrusion. , which can effectively solve the disadvantages of high viscosity and difficult separation between layers during the use of nylon crown belt cord rolls produced by calendering