Cobalt salt adhesive for bonding nitrile rubber and copper/zinc frame and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for bonding nitrile rubber and a copper / zinc frame and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and assistants, wherein the compound adhesive comprises a main adhesive and an auxiliary adhesive, wherein the main adhesive comprises cobalt borate and cobalt neodecanoate; the auxiliary adhesive is compound organic salt containing nickel and vanadium; the phenolic resin comprises a methylene donor and a methylene acceptor; and the assistants comprise toughening agents, activating agents, vulcanization activators, silane coupling agents and vulcanizing agents. The preparation method comprises the following steps: dispersing the compound adhesive in the carrier phenolic resin, and dissolving by a mixed solvent under the actions of the assistants to obtain adhesive cement, thereby obtaining the cobalt salt adhesive for bonding the nitrile rubber and the copper / zinc frame. The cobalt salt adhesive provided by the invention has the advantages of high thermal stability, favorable dynamic mechanical properties and low cost, can be directly coated, and is suitable for high-strength bonding of mixed rubberof nitrile rubber and regenerated rubber or regenerated rubber powder and a copper / zinc / copper alloy / zinc alloy / zinc plated / brass-plated frame.

Description

technical field [0001] The present invention relates to an adhesive and a preparation method thereof, in particular to acrylonitrile-butadiene rubber used for bonding the mixed rubber of nitrile rubber and reclaimed rubber or reclaimed rubber powder to copper, zinc, copper alloy, zinc alloy, galvanized, or brass-plated skeleton A cobalt salt adhesive for bonding with copper and zinc skeletons and a preparation method thereof. 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 cob...

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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