Cobalt salt adhesive for retreading radial steel cord tyres and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for retreading radial steel cord tyres and a preparation method thereof. The adhesive comprises a composite adhesive, rubbers and auxiliaries, wherein the composite adhesive comprises main adhesives and an auxiliary adhesive and serves as component A; the main adhesives include cobalt borate and cobalt neocaprate; the auxiliary adhesive is vanadium 2-ethyl hexanoate; the rubbers include natural rubber and styrene-butadiene rubber; and the auxiliaries include an anti-aging agent, a plasticizer, a reinforcing agent, an accelerating agent, an activeagent, a silane coupling agent and a vulcanizer. The cobalt salt adhesive is characterized by dispersing the component A into a rubber carrier and matching the component A with the auxiliaries to form the mother adhesive B and dissolving the mother adhesive B with the solvent gasoline to prepare adhesive cement, thus obtaining the cobalt salt adhesive. The adhesive has the following advantages: the adhesive has good thermal stability, good dynamic mechanical property and low cost, is directly coated and used, saves resources and is suitable for adhering the new tread rubbers to the original belt compound and adhering the new tread rubbers to the polished belt steel cords under high strength in the process of retreading radial steel cord tyres.

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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