Liquid isoprene rubber containing bead filler composition of tire as well as preparation method and application thereof

Abstract

The invention relates to the field of manufacture of tires, in particular to a liquid isoprene rubber containing bead filler composition of a tire as well as a preparation method and application thereof. The liquid isoprene rubber containing bead filler composition of the tire is formed by mixing the following components in parts by weight: 85-97 parts of natural rubber, 3-15 parts of liquid isoprene rubber, 65-75 parts of carbon black, 4-8 parts of vulcanizing agent and vulcanization accelerator and the balance of processing assistants. In the invention, the stiffness of parts can be sufficiently ensured, and the deformation of the parts in the processing process can be prevented; and moreover, the higher processing safety of rubber materials can be ensured due to longer scorching time. When an all-steel radial truck tire provided by the invention is adopted, the high extrusion temperature rise is reduced, the production efficiency is increased, the technical loss is reduced and the like on the premise that the structure is unchanged, and the main physical mechanical properties of hard bead filler materials, the dimension stability of the parts, and the technical viscidity is notunreduced.

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] The components of large all-steel OTR tires are too large and thick, which brings great troubles to the processing of the components, low production efficiency, poor dimensional stability, high processing temperature, scorch, frost, non-stick, and process Large loss and so on. This is the goal that major tire companies have been striving to solve in the production and processing process. The process design is mostly developed and applied in the following ways: increase large-scale extrusion / extrusion / calendering equipment-increase investment and expand occupied space, etc., or divide into several parts for extrusion / extrusion / calendering and then compound them into molding. One-piece parts, or wound compounding - low production efficiency, poor dimensional stability of parts...

AI Technical Summary

Problems solved by technology

The process design is mostly developed and applied in the following ways: increase large-scale extrusion / extrusion / calendering equipment-increase investment and expand occupied space, etc., or divide into several parts for extrusion / extrusion / calendering and then compound them into moldings. One-piece parts, or winding compound - low production efficiency, poor dimensional stability of parts, compound interface pollution, non-stick, etc., or reduce the viscosity of the rubber (increase the amount of softener in the formula or increase the mixing stage to forcefully reduce the viscosity) Improve processing Process passability - but parts are poor in stiffness, large deformation in molding and other processes, low production efficiency, etc.