OIL- AND ACID-ALKALI-RESISTANT RUBBER BASED ON ETHYLENE-PROPYLENE-DIENE AND BUTADIENE-NITRILE RUBBERS. THE EFFECT OF RUBBER RATIO ON RUBBER PROPERTIES

The influence of the content of ethylene-propylene-diene S 505A and butadiene-nitrile SKN 2645 rubbers on the rheometric properties of the rubber mixture, as well as on the physicomechanical and operational properties of the rubber, was studied. It was established that the rubber containing a combination of S 505A and SKN 2645 rubbers in a mass ratio of 25:75 exhibits the best rheometric properties, and its vulcanizate has high physicomechanical characteristics. This rubber is resistant to the effects of hydrocarbon, acid-alkali environments and can be recommended for the production of sealing and gasket materials in the automotive industry.