Composition and technology effect on the structure and properties of frost-resistant elastomeric materials based on blends of polar and nonpolar rubbers

Elastomeric materials for sealing devices operated in the Far North, including Republic of Sakha (Yakutia), must be resistant to working environments and have frost wear resistance with acceptable physical mechanical properties. Some listed properties are mutually exclusive not always achievable based on individual rubber. Thus, one promising method elastomeric is use rubber mixtures. In this study, model blends nitrile-butadiene (BNKS-18), butadiene (SKD), isoprene (SKI-3) rubbers were studied. Nitrile was chosen as component mixture responsible environments, diene (SKD SKI-3) components resistance. The addition SKI-3 also suppressed crystallization SKD An increase BNKS-18 content enhanced non-polar oils. A decrease lowtemperature polar oils observed. Additionally, studies structure obtained by atomic force microscopy carried out, which proved uniformity distribution particles dispersed phase, size did exceed 1-5 μm. optimal ratio butadiene-nitrile 70:30 phr. At ratio, meet requirements operation cold climates.