Inner liner compound for truck tire

Abstract

The invention relates to an inner liner compound for a tire, specifically to an inner liner compound for a truck tire. The inner liner compound comprises the following components: natural rubber, halogenated butyl rubber, polyisoprene rubber LIR, carbon black N660, stearic acid, a tackifying resin, a homogenizing agent 40MSF, aromatic oil, magnesium oxide, zinc oxide, anti-aging agents, insoluble sulphur and a promoter NS. The invention has the following advantages: 60 to 75 of the halogenated butyl rubber and 0 to 80 of the natural rubber are used, so production cost for the inner liner compound is greatly reduced; through adjustment of composition of the inner liner compound by the polyisoprene rubber, utilization of the characteristics of the polyisoprene rubber and combined usage of the natural rubber and the halogenated butyl rubber, air impermeability and other properties of the inner liner compound are effectively improved; and through combination of the anti-aging agents, the characteristics like high temperature resistance and oxidation performance of rubber are improved, and the service life and the safety performance of the inner liner compound are enhanced.

Description

technical field [0001] The invention relates to a tire inner liner adhesive, in particular to a truck tire inner liner adhesive. Background technique [0002] With the progress of the society and the development of the economy, truck transportation has become one of the important modes of transportation, and tires, as a part of trucks, play a pivotal role. The quality of tires directly affects the development prospects of this industry. [0003] The current development trend of tires is to develop innerless tires, which requires the inner layer of the tire to have good air tightness, and the air tightness of the tire has a great correlation with the inner layer, increasing the thickness will increase the air tightness Tightness, but the increase in thickness will increase the cost of the tire and reduce the performance of the tire, such as heat dissipation, tire weight, etc. The innerliner rubber generally uses halogenated butyl rubber, such as brominated butyl rubber or chl...

AI Technical Summary

Problems solved by technology

[0003] The current development trend of tires is to develop innerless tires, which requires the inner layer of the tire to have good air tightness, and the air tightness of the tire has a great correlation with the inner layer, increasing the thickness will increase the air tightness Tightness, but the increase in thickness will increase the cost of the tire and reduce the performance of the tire, such as heat dissipation, tire weight, etc. The innerliner rubber generally uses halogenated butyl rubber, such as brominated butyl rubber or chlorinated butyl rubber. Natural rubber and halogenated butyl rubber can also be used together. The airtightness of brominated butyl rubber vulcanized rubber is better than that of chlorinated butyl rubber. Generally speaking, 100% brominated butyl rubber has the best air tightness, but It also has many disadvantages: uneven dispersion of carbon black and small materials, poor adhesion to the transition layer, high cost, etc.

[0018] The above-mentioned patent application uses modified chlorosulfonated polyethylene MCSM to replace part of brominated butyl rubber, which improves the defects in 100% brominated butyl rubber. However, when trucks are used, most of them have long driving time and heavy load Features, long driving time, especially in summer when the tire temperature is very high, which requires truck tires to have high heat resistance and aging resistance, as well as high compressive and tensile strength, the above patent application The above-mentioned problems are not solved, and the above-mentioned patent application uses 85-93 parts by weight of bromobutyl rubber, and the cost is still very high

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