Cobalt salt adhesive for adhering natural rubber and copper and zinc frameworks and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for adhering natural rubber and copper and zinc frameworks and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and aids, wherein the compound adhesive comprises cobalt boroacylate and cobalt neocaprate; the phenolic resin comprises a methyl donor and a methyl acceptor; and the aids comprise a toughening agent,an activating agent, a curing activator, a silane coupling agent and a vulcanizer. The preparation method comprises the following steps of: dispersing the compound adhesive in the phenolic resin carrier, matching with the aids, dissolving by using a mixed solvent to prepare adhesive cement so as to obtain the cobalt salt adhesive for adhering the natural rubber and the copper and zinc frameworks.The cobalt salt adhesive has the advantages of high thermal stability, good dynamic mechanical performance, direct coating, and low cost, and is suitable for high-strength adhesion between the reclaimed rubber or reclaimed rubber granule-containing natural rubber, including the natural rubber and mixed rubber of the natural rubber and general-purposed synthetic rubber, and copper, zinc, copper alloy, zinc alloy, zinc-plated and brass-plated frameworks.

Description

technical field [0001] The present invention relates to adhesive and its preparation method, especially for natural rubber containing reclaimed rubber or reclaimed rubber powder, including natural rubber and its mixed rubber with general-purpose synthetic rubber and copper, zinc, copper alloy, zinc alloy, galvanized, Cobalt salt adhesive for bonding natural rubber bonded with brass-plated framework to copper and zinc framework 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...

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 or 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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