The relation of ozone resistance to the volume and structure of the interfacial layer and the amounts of crosslinks in the interlayer was studied for covulcanizates of butadiene–acrylonitrile rubbers of various polarities with ethylene–propylene–diene (EPDM) elastomers that differed in the comonomer composition and stereoregularity of propylene units. It was shown that the ozone resistance is determined by the compatibility of the components, phase structure, the interlayer volume and density, the amount of crosslinks in the interlayer, and the strength of the EPDM network.
butadiene–nitrile rubbers, ethylene–propylene–diene elastomers, ozone-induced degradation, ozone-protective action, compatibility, phase, structure, interphase layers, stereoregularity, isotacticity, isomeric composition, stress relaxation, бутадиен-нитрильные каучуки этилен-пропилен-диеновые эластомеры, разложение индуцированное озоном, озонзащитное действие, совместимость, фаза, структура, межфазные слои, стереорегулярность, изотактичность, изомерная композиция, релаксации напряжений
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