Techniques for bonding rubber to metal - Using metallic coagents

Metal salts of acrylic and methacrylic acids are normally used with peroxid es to increase the cure state of saturated and unsaturated rubbers. In addi tion, they also have been found to increase the adhesion of the rubber to u ntreated metals and synthetic fibers. In this context, they offer several w ays of bonding rubber to metal that are far less intensive and time consumi ng than the procedure required for conventional adhesives. They may be mixe d with a rubber compound as coagents to function as international adhesion promoters on curing. They also may be mixed with a rubber compound to form an adhesive strip that can be used as a tie layer between various rubber co mpounds and metals. This technique may be applied to either sulfur or perox ide cured stock. And finally, they are available in the form of reactive di spersions, where they may be applied as pastes to either the rubber or meta l surface prior to curing.