Cobalt salt adhesive for adhering ethylen e-propylene-diene mischpolymere and bare steel framework and preparation method thereof

Abstract

The invention discloses a cobalt salt adhesive for adhering ethylen e-propylene-diene mischpolymere and a bare steel framework and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and aids, wherein the compound adhesive consists of a main adhesive and an auxiliary adhesive; the main adhesive comprises cobalt boroacylate and cobalt neocaprate; the auxiliary adhesive is vanadium isooctanoate and cerium isooctanoate; the phenolic resin comprises a methyl donor and a methyl receptor; and the aids comprise a toughening agent, an activator, a curing activator, a silane coupling agent and a curing agent. The preparation method comprises the following steps of: dispersing the compound adhesive in the phenolic resin carrier, and matching with the aids; and adhsdissolving by using a mixed solvent to prepare adhesive cement to obtain the cobalt salt adhesive for adhering the ethylen e-propylene-diene mischpolymere and the bare steel framework. The cobalt salt adhesive has the advantages of high thermal stability, high dynamic mechanical properties, direct coating, low cost, and application to adhering ethylen e-propylene-diene mischpolymere including mixed rubber of the ethylen e-propylene-diene mischpolymere, natural rubber, reclaimed rubber or reclaimed rubber powder and the bare steel framework material.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to EPDM rubber, including EPDM rubber and natural rubber, reclaimed rubber or reclaimed rubber powder, for bonding EPDM rubber to bare steel skeleton. A cobalt salt adhesive for bonding bare steel 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 cobalt boroacylate, have In addition to high-strength adhesive properties, it also ...

AI Technical Summary

Problems solved by technology

However, due to the poor self-adhesiveness 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, natural rubber, styrene-butadiene rubber, and isoprene rubber is usually used in the rubber product industry such as valves, bridge shock pads, and various seals. The bonding of this kind of EPDM mixed rubber and bare steel frame material is also a problem that has plagued the rubber industry for many years.

In particular, many manufacturers use a large amount of reclaimed rubber or reclaimed rubber powder in order to reduce the manufacturing cost of the product. Although the reclaimed rubber has been desulfurized, the rubber molecular chain is not completely linear, while the reclaimed rubber powder is vulcanized. Mature rubber, almost completely has a network structure, which makes the adhesive ability of the coated modified cobalt salt adhesive based on chemical bonding and rubber as the carrier drop sharply, which cannot meet the needs of such rubber product manufacturers.

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