Features of the Abrasive Wear of Rubbers Containing Complex Anti-ager PRS-1N

Abstract

An MIR-2 machine and an MBI-3 light microscope were used to study the abrasive wear of tread rubber containing a complex anti-ager, antidegradant PRS-1N, in comparison with a rubber containing anti-ager IPPD (N-isopropyl-N-phenyl-p-phenylenediamine). Rubber containing PRS-1N (∊-caprolactam-N-isopropyl-N-phenyl-p-phenylenediamine-zinc disalicylate) has considerably less wear. The reason for this is the presence of ∊-caprolactam in PRS-1N and its interaction with other components of the complex anti-ager. Data on washing out confirm this interaction. An important role is played by the polarity of PRS-1N, which leads to its incompatibility with general-purpose rubbers entering the composition of tread rubber. Deliberations concerning the mechanism of action of antidegradant PRS-1N are presented.