Study of the resistance of nitrile butadiene rubber to thermal cycling in a hydrocarbon medium

Abstract

The change in the properties of rubbers 98-1 and RP-10 based on nitrile butadiene rubbers with 17– 20% of acrylonitrile content under thermal cycling conditions in the range from –50 to +80°С is evaluated. The samples are exposed in the air and working hydrocarbon medium of hydraulic oil I-20A in stress-free and deformed states. It has been established that 98-1 rubber is more resistant in air and RP-10 rubber containing a sulfur-peroxide vulcanizing system and UHMWPE demonstrates high durability in a hydrocarbon medium in comparison with first one. The paper shows insignificant deformation on the rubbers properties and deterioration of the frost resistance of rubbers up to its complete loss during thermal cycling in the medium of I-20A hydraulic oil.