Cobalt salt binding agent for binding nitrile rubber and bare steel framework and preparation method thereof

Abstract

The invention discloses a cobalt salt binding agent for binding a nitrile rubber and a bare steel framework and a preparation method thereof. The binding agent comprises a composite binding agent, a rubber and auxiliary agents; the composite binding agent consists of main binding agents and auxiliary binding agents to form a component A, wherein the main binding agents comprise cobalt acylate and cobalt neodecanoate, and the auxiliary binding agents comprise diethyl vanadium caproate and diethyl cerium caproate; the rubber is the nitrile rubber; the auxiliary agents comprise anti-aging agent, plasticizer, reinforcing agent, accelerator, active agent and vulcanizing agent; and the component A is dispersed into a nitrile rubber carrier and matched with the auxiliary agents to form binding master batch B, and the binding master batch B is dissolved by an ethyl acetate solvent to form mucilage so as to obtain the cobalt salt binding agent for binding the nitrile rubber and the bare steel framework. The binding agent has the advantages of good thermal stability, good dynamic mechanical property, direct coating and use and low cost, and is suitable for high-strength binding among the nitrile rubber, the nitrile composite rubber and the bare steel framework material.

Description

technical field [0001] The present invention relates to an adhesive and a preparation method thereof, in particular to nitrile butadiene rubber, including nitrile butadiene rubber and its composite rubber with natural rubber, styrene-butadiene rubber, and isoprene rubber, and a bare steel skeleton bonded to butadiene nitrile rubber and a bare steel skeleton Cobalt salt adhesive for bonding and preparation method thereof. Background technique [0002] Existing nitrile rubber, including nitrile rubber and its composite rubber with natural rubber, styrene-butadiene rubber, and isoprene rubber, is used for coating-type bonding with bare steel skeleton materials, and imported coating-type bonding mainly based on physical bonding is used. There are also ethanol solutions of domestic synthetic resins used as coating adhesives. These adhesives are all physical adhesives, and generally have the defects of aging resistance, especially heat aging resistance and damp heat aging, and poo...

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Problems solved by technology

[0004] Since the direct-added cobalt salt adhesive cannot achieve the bonding of nitrile rubber and nitrile composite rubber to bare steel skeleton materials, and is not suitable for coating production processes, at present, these small and medium-sized rubber products industries usually use paintable adhesives. Rubber-coated-metal adhesives mainly rely on imports. This type of organic mixture adhesive is a thermal vulcanization adhesive. Physical forces such as gravity and van der Waals force achieve bonding, and there is no chemical reaction with the metal surface, which determines the bonding performance of this type of adhesive, especially the poor heat aging resistance and dynamic mechanical properties. From the results of use, the bonded products It is easy to degumming and not heat-resistant during use; and the use of this type of adhesive is generally divided into primer and surface adhesive, which need to be coated twice during use, which is troublesome to operate; and this type of adhesive is relatively expensive. high cost

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