Full-steel radial ply tyre inner liner air/tight layer rubber composition, and its mixing method

Abstract

The invention relates to a gum innerliner for all-steel radial tyre inner covering. It is made up from 20 weight portions of natural glue, 80 portions bromination butyl glue, 0-0.5 weight portions chemical peptizer SJ-103, 50-70 weight portions of reinforcing agent black carbon, 1-5 portions magnesia, 1-3 portions stearic acid, 0-6 portions C5 petroleum resin, 0-6 portions equal dispersing agent UB4000, 10-15 portions aromatic naphtha, 1-5 portions white zinc, 1.0-2.0 portions accelerating agent DM, and 0.5-2.0 portions sulfur. It has good the thermal endurance, and good binding property.

Description

technical field [0001] The invention belongs to an inner liner glue for an inner liner of an automobile all-steel radial tire. Background technique [0002] 100% bromobutyl rubber inner liner adhesive formula, air tightness is quite good. The airtightness of the tire innerliner has a good correlation with the thickness. Increasing the thickness will increase the airtightness or reduce the air permeability, but the increase in the thickness of the innerliner will bring two adverse effects: one is the increase in the cost of the tire The 2nd, tire performance declines, and the increase of airtight layer thickness causes tire weight to increase, can reduce the heat radiation performance of tire, high-speed performance and the fuel consumption of automobile. In addition, the 100% bromobutyl rubber formula also has many shortcomings in production and use: carbon black and small materials are not uniformly dispersed, and bubbles are prone to appear when laminating with the transi...

AI Technical Summary

Problems solved by technology

The airtightness of the tire innerliner has a good correlation with the thickness. Increasing the thickness will increase the airtightness or reduce the air permeability, but the increase in the thickness of the innerliner will bring two adverse effects: one is the increase in the cost of the tire The second is that the performance of the tire decreases, and the increase in the thickness of the airtight layer causes the weight of the tire to increase, which will reduce the heat dissipation performance of the tire, the high-speed performance and the fuel consumption of the car.

In addition, the 100% bromobutyl rubber formula also has many disadvantages in production and use: uneven dispersion of carbon black and small materials, easy to appear bubbles when laminating with the transition layer, and poor adhesion with the transition layer