Resin complex-containing rubber composition and application

Abstract

The invention provides a resin complex-containing rubber composition. The rubber composition is mainly prepared from the following components: rubber, carbon black, an adhesion promoter, sulfur, vulcanization accelerator, a resin complex and other additive, wherein main components of the resin complex are cashew nut oil modified amino resin, resorcinol-formaldehyde resin and a methylene donor; thecashew nut oil modified amino resin complex plays a role of bridge between a rubber network and a resin network. The rubber composition has such outstanding characteristics as great modulus, strong adhesive force and low thermogenesis.

Description

technical field [0001] The invention belongs to the field of rubber industry, and in particular relates to a rubber composition containing a resin compound, which can be used in one or more parts of a tire, including tire carcass, tire belt and other rubber and steel wire bonding parts . Background technique [0002] In radial tires, the bonding between the adhesive glue and the copper-plated steel wire skeleton material is extremely important and plays a decisive role in the performance of the tire. At present, in the rubber-steel wire bonding system, there are mainly meta-formazan-white-cobalt bonding system, meta-formula bonding system, meta-formazine-cobalt bonding system, etc. Currently, meta-formazine-cobalt bonding system is used more, and m-formazine-cobalt bonding system is usually used Phenol is used in combination with hexamethoxymelamine (HMMM). Due to the relatively low molecular weight of resorcinol, it is easy to sublimate and emit smoke under mixing and proc...

AI Technical Summary

Problems solved by technology

[0003] Due to the difference in polarity between the meta-nail resin and rubber (adhesive glue is mainly non-polar natural rubber, and meta-nail resin is a polar compound), the resin migrates to the surface of the rubber material and contacts the surface of the steel wire. Under high temperature vulcanization conditions, the copper ions on the surface of the copper-coated steel wire and the sulfur in the rubber form Cu x S adhesive layer, at the same time - A resin reacts with HMMM to form a resin network, the resin network is enriched on the adhesive layer, which can effectively insulate the damage of the adhesive layer by water vapor and other substances during humid heat aging, and has a negative effect on the adhesive layer The layer plays a very good protective role, so the resin network does not directly provide adhesive performance, but only plays a role of isolation protection; when the rubber is deformed, because the resin network is not connected with the rubber network and the adhesive layer through chemical bonds, It will cause friction between the resin network and the rubber network and the adhesive layer, and the heat generation of the rubber will increase. The friction will damage the adhesive layer and reduce the adhesion of the steel wire. At the same time, the resin network will not work well under long-term deformation conditions. The enrichment on the surface of the adhesive layer reduces its protection to the adhesive layer, and the moisture and heat aging performance decreases

[0004] Since the steel wire is rigid and the rubber is flexible, the traditional adhesive system does not have a good transition layer between the steel wire and the rubber. Under the condition of deformation caused by external force, the Cu between the steel wire and the rubber x S Adhesive layer is easily damaged, affecting the adhesion between rubber and steel wire

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