Cobalt salt adhesive for adhesion of acrylonitrile-butadiene rubber and bare steel skeleton and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for the adhesion of acrylonitrile-butadiene rubber and bare steel skeletons and a preparation method thereof; the adhesive comprises a composite adhesive, rubber, and an additive; the composite adhesive, which comprises a main adhesive and an auxiliary adhesive, is the A component, wherein the main adhesive comprises cobalt boracylate and cobalt neodecanoate, and the auxiliary adhesive is 2-ethylcaproate containing vanadium and cerium; the rubber is acrylonitrile-butadiene rubber; the additive comprises an antioxidant, a plasticizer, a reinforcing agent, a promoter, an activator, and a vulcanizing agent; the A component is dispersed in a acrylonitrile-butadiene rubber carrier, and is combined with the additive to forms an adhesive mother rubber B; the adhesive mother rubber B is dissolved by a solvent of ethyl acetate to prepare rubber slurry so as to obtain the cobalt salt adhesive for the adhesion of acrylonitrile-butadiene rubber and bare steel skeletons. The cobalt salt adhesive of the invention has the advantages of good heat stability, good dynamic mechanical properties, direct coating application, and low cost, and is applicable to the high-strength adhesion of acrylonitrile-butadiene rubber and bare steel skeleton materials.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to acrylonitrile-butadiene rubber including acrylonitrile-butadiene rubber and its composite rubber with natural rubber, styrene-butadiene rubber and isoprene rubber, and a bare steel skeleton bonded to acrylonitrile-butadiene rubber and a bare steel skeleton Cobalt salt adhesive for bonding and preparation method thereof. Background technique [0002] When the existing nitrile rubber, including nitrile rubber and its composite rubber with natural rubber, styrene-butadiene rubber, and isoprene rubber, is bonded with bare steel skeleton materials by coating, the 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, an...

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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 the bare steel skeleton material, and is not suitable for the coating production process, 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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