RUBBER RESISTANCE TO THE EFFECTS OF AUTOMOTIVE GASOLINE COMPONENTS
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Abstract
This article presents the results of a study of the influence of gasoline components, such as aromatic hydrocar-bons, catalytic reforming gasoline, cyclohexane, isooctane, ethyl and n-butyl alcohols, and MTBE, on rubbers based on EPDM, NBR, HNBR, and FKM rubbers. Patterns of change in the weight of rubber samples under the influence of gas-oline components are established. It is shown that EPDM-based rubber is unsuitable for use as sealing materials when in contact with gasoline components due to a significant loss of mass and elasticity of the sample. The resistance of NBR and HNBR rubbers to destruction by aromatic gasoline components is approximately equal. However, HNBR-based rubbers exhibit higher resistance to swelling and destruction by isooctane and cyclohexane. The rubber sample based on fluororubber exhibits the best resistance to the effects of gasoline components. Significant swelling was observed only when immersed in MTBE. No signs of degradation of FKM-based rubber were detected upon contact with any of the studied gasoline components.
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