Cobalt salt bonding agent for bonding natural rubber and naked steel framework and preparation method thereof

Abstract

The invention discloses a cobalt salt bonding agent for bonding natural rubber and a naked steel framework and a preparation method thereof. The bonding agent comprises a compound bonding agent, a phenolic resin and an aid, wherein the compound bonding agent consists of a main bonding agent and an auxiliary bonding agent; the main bonding agent comprises cobalt boroacylate and cobalt neodecanoate; the auxiliary bonding is 2- ethyl vanadium caproate; the phenolic resin comprises a methyl donor and a methyl acceptor; and the aid comprises a toughening agent, an activating agent, a vulcanizing activator, a silane coupling agent and a vulcanizing agent. The cobalt salt bonding agent for bonding natural rubber and the naked steel framework is obtained by dispersing the compound bonding agent into a phenolic resin carrier, adding the aid, and dissolving into adhesive cement by using a mixed solvent. The cobalt salt bonding agent has the advantages of high thermal stability, high dynamic property, direct coating and low cost, an is suitable for high-strength bonding of natural rubber containing reclaimed rubber or reclaimed rubber powder such as natural rubber and mixed rubber consisting of the natural rubber and general synthetic rubber with a naked steel framework material.

Description

technical field [0001] The present invention relates to an adhesive and a preparation method thereof, especially for bonding natural rubber containing reclaimed rubber or reclaimed rubber powder, including natural rubber and its mixed rubber with general-purpose synthetic rubber, to bare steel framework, for bonding natural rubber to bare steel framework Cobalt salt binder and its preparation method. Background technique [0002] In the continuous production of large-scale rubber products such as steel radial tires, steel wire reinforced conveyor belts, and steel wire braided rubber hoses, the high-strength bonding of elastomers such as rubber and galvanized or brass-plated steel wire cord braided skeleton materials is usually bonded directly. Addition-type cobalt salt binders, direct-addition cobalt salt binders include cobalt stearate, solid cobalt naphthenate, cobalt neodecanoate, cobalt boroacylate, etc. These cobalt salt binders, especially cobalt boroacylate, have In ...

AI Technical Summary

Problems solved by technology

However, in order to reduce the cost of rubber products, many rubber product manufacturers use a large amount of reclaimed rubber and reclaimed rubber powder in the formula of rubber products. Although the reclaimed rubber has been desulfurized, the rubber molecular chain is not completely linear. The powder is vulcanized mature rubber, which is almost completely reticulated, which makes the adhesive ability of the coated modified cobalt salt adhesive mainly chemically bonded and rubber as the carrier drop sharply, and cannot adapt to this type of rubber. The needs of product manufacturers

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