Cobalt salt binder for binding ethylene-propylene-diene rubber and bare steel skeleton and preparation method thereof

Abstract

The invention discloses a cobalt salt binder for binding ethylene-propylene-diene rubber and a bare steel skeleton and a preparation method thereof. The binder comprises a composite binder, rubber and additives, wherein the composite binder consists of a main binder and an auxiliary binder to form a component A; the main binder comprises cobalt boracylate and cobalt neodecanoate and the auxiliary binder is an 2-ethylcaproate containing vanadium and cerium; the rubber comprises ethylene-propylene-diene rubber, natural rubber and butadiene-styrene rubber; and the additives comprise an antiager, a plasticizer, a reinforcing agent, a promoter, an active agent and a vulcanizing agent. The preparation method comprises the following steps: dispersing the component A in the mixed rubber carrier composed of ethylene-propylene-diene rubber, natural rubber and butadiene-styrene rubber to form a binding masterbatch B under the coordination of the additives, and dissolving the binding masterbatch B in the solvent gasoline to form mucilage, namely the cobalt salt binder for binding ethylene-propylene-diene rubber and the bare steel skeleton. The cobalt salt binder has the following advantages: the thermal stability is good, the dynamic mechanical properties are good, the binder can be directly coated for use, the operations are convenient, the environmental pollutions can be reduced and the industrial hygiene can be improved.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to EPDM rubber, including EPDM rubber and its mixed rubber with natural rubber, styrene-butadiene rubber, and isoprene rubber, bonded to a bare steel skeleton. A cobalt salt adhesive for bonding propylene rubber and bare steel framework and a preparation method thereof. Background technique [0002] EPDM rubber is widely used in the rubber product industry due to its good aging resistance, weather resistance, heat resistance, electrical insulation, chemical corrosion resistance, good elasticity and compression deformation resistance. However, due to the poor self-adhesion and mutual adhesion of pure EPDM rubber, the strength of pure rubber is low, and the price is expensive. In addition, the bonding between pure EPDM rubber and metal skeleton materials, especially with bare steel skeleton materials Bonding is extremely difficult, so the mixed rubber of EPDM rubber, na...

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Problems solved by technology

[0005] Since the direct-added cobalt salt adhesive cannot achieve high-strength bonding of EPDM rubber and EPDM mixed rubber with bare steel skeleton materials, and is not suitable for coating production processes, at present, these small and medium-sized rubber products Coatable rubber-metal adhesives commonly used in the industry mainly rely on imports. This kind of mixture of various resins is a thermal vulcanization adhesive. Under vulcanization conditions, the bonding of rubber and metal mainly depends on the infiltration of resin on the metal surface, Adsorption and adhesion, that is, bonding is achieved through physical forces such as electric attraction and Van der Waals force, and there is no chemical reaction with the metal surface, which determines the adhesive performance of this type of adhesive, especially the poor thermal aging resistance and dynamic mechanical properties. According to the results of use, the bonded products are easy to degumming and not heat-resistant during use; and the use of this type of adhesive is generally divided into primer and surface glue, which need to be coated twice during use, which is troublesome to operate; and this type of adhesive The price of the adhesive is relatively expensive and the cost of use is high; in particular, since this type of adhesive is a mixture of various resins, in order to adapt to the dissolution of various resins, a mixed solvent containing benzene, esters, and ketones is usually used. , the solvent volatilizes during the operation, causing environmental pollution and seriously damaging the health of operators

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