Cobalt salt adhesive for retreading radial wire cord tire and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for retreading a radial wire cord tire and a preparation method thereof. The adhesive comprises a composite adhesive, rubber and an addition agent, wherein the composite adhesive is mainly composed of a main adhesive and an auxiliary adhesive to form a component A; the main adhesive comprises cobalt boroacylate and cobalt neocaprate; the auxiliary adhesive is 2-vanadium ethylcaproate; the rubber comprises natural rubber and butadiene styrene rubber; the addition agent comprises an anti-ageing agent, a plasticizer, a reinforcing agent, an accelerant, an activating agent, a silane coupling agent and a vulcanizing agent. The cobalt salt adhesive for retreading the radial wire cord tire is prepared by the following steps of: dispersing the component A into a rubber carrier to be matched with the addition agent to form an adhesion master batch B; and dissolving the adhesion master batch B by a solvent gasoline to prepare adhesive slurry. The cobalt salt adhesive for retreading the radial wire cord tire provided by the invention has the advantages of good heat stability, good dynamic mechanic property, capability of being directly coated, low cost, and resource saving, and is applicable to the adhesion of new tread rubber and a previous belt compound in a retreading process of the radial wire cord tire, and the high-strength adhesion of the new tread rubber and polished belt steel wires.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a cobalt salt adhesive used for retreading steel wire radial tires and a preparation method thereof. Background technique [0002] Steel wire radial tire is a new type of tire with high speed, safety, energy saving and environmental protection. After more than 20 years of development, the output of steel wire radial tire in my country has accounted for more than 80% of the total tires. With the popularization and use of steel wire radial tires, the number of scrapped and damaged steel wire radial tires is increasing year by year, and a large number of damaged tires need to be retreaded. According to the information provided by the China Rubber Association, the average number of retreads for foreign steel radial tires is 5 to 6 times, and the retread rate is 60% to 70%. It is 5% to 6%. The reason is that there is a lack of a coating that can not only bond the new tr...

AI Technical Summary

Problems solved by technology

According to the information provided by the China Rubber Association, the average number of retreads for foreign steel radial tires is 5 to 6 times, and the retread rate is 60% to 70%. It is 5% to 6%. The reason is that there is a lack of a coating that can not only bond the new tread rubber to the original belt layer rubber, but also make the new tread rubber and the polished belt layer steel wire bond with high strength. type adhesive

Although this method of tire retreading is low in cost, since the medium rubber can only complete the bonding of new tread rubber and tire raw rubber, it cannot complete the high-strength bonding of new tread rubber and polished belt steel wires, so this method This kind of retreading tire has poor safety and short service life, which seriously hinders the development of my country's steel wire radial tire retreading industry

At present, a large number of damaged and scrapped steel wire radial tires in China are used to make reclaimed rubber and reclaimed rubber powder, which not only causes waste of rubber resources, metal resources and energy, but also causes environmental pollution.

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