Cobalt salt bonding agent for bonding ethylene propylene diene monomer with copper or zinc framework and preparation method thereof

Abstract

The invention discloses a cobalt salt bonding agent for bonding ethylene propylene diene monomer with a copper or zinc framework and a preparation method thereof, the bonding agent consists of a composite bonding agent, phenolic resin and auxiliaries, the composite bonding agent comprises a main bonding agent and an auxiliary bonding agent, wherein the main bonding agent comprises cobalt boroacylate and cobalt neocaprate, the auxiliary bonding agent is cerium 2-ethylhexanoate, the phenolic resin comprises a methyl donor and a methyl acceptor, and the auxiliaries comprise a toughener, an activating agent, a vulcanizing activator, a silane coupling agent and a vulcanizing agent; and the cobalt salt bonding agent for bonding the ethylene propylene diene monomer with the copper or zinc framework is obtained by dispersing the composite bonding agent in a phenolic resin carrier, using the auxiliaries for matching and dissolving in mixed solvent for preparing into glue slurry. The cobalt salt bonding agent has the advantages of good thermal stability, good dynamic mechanical properties, direct coating for use and low cost, and is applicable to high-strength bonding the ethylene propylene diene monomer including mixed rubber of the ethylene propylene diene monomer, natural rubber and reclaimed rubber or reclaimed rubber powder with the copper, zinc, copper alloy, zinc alloy, zinc-plated and brass-plated frameworks.

Description

technical field [0001] The invention relates to an adhesive and a preparation method, especially for EPDM rubber including EPDM rubber and natural rubber, reclaimed rubber or reclaimed rubber powder mixed rubber with copper, zinc, copper alloy, zinc alloy, galvanized 1. Cobalt salt adhesive for bonding EPDM rubber with copper and zinc skeleton bonded with brass-plated skeleton and its preparation method. 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 ...

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, it is extremely difficult to bond pure EPDM rubber and metal skeleton materials. Bridge damping pads, various seals and other rubber products industries usually use the mixed rubber of EPDM rubber, natural rubber, styrene-butadiene rubber, and isoprene rubber, but even this kind of EPDM mixed rubber and The bonding of metal skeleton materials 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.

Images