The modification of ethylene-propylene-diene elastomers via the addition of fragments of an accelerating agent to improve their compatibility with acrylonitrile-butadiene rubbers and to reduce the rate of ozone degradation of the polydiene matrix is efficient only in the case of low stereoregularity of propylene units in the ethylene-propylene-diene copolymers. When the isotacticity of propylene fragments in the chains of ethylene-propylene-diene elastomers is high, their modification leads to a reduction in the ozone resistance of the crosslinked blend.
acrylonitrile-butadiene rubbers, ethylene-propylene-diene elastomers, ozone-induced degradation, ozone-protective action, compatibility, phase, structure, interphase layers, stereoregularity, isotacticity, isomeric composition, stress relaxation, modification, accelerating agent, бутадиен-нитрильные каучуки, этилен-пропилен-диеновые эластомеры, деструкция под действием озона, защита от воздействия озона, совместимость, фазы, структура, межфазные слои, стереорегулярность, изотактичность, изомерный состав, релаксация напряжений, модификация, ускоряющий агент
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