FIELD: technological processes.
SUBSTANCE: invention relates to rubber industry, in particular, to production of rubber mixtures for oil-swellable sealing elements used in oil and gas industry. Rubber mixture for oil-swelling sealing elements contains butadiene-nitrile rubber with nitrile of acrylic acid content of 17–20 %, isoprene rubber SKI-3, sevilen 11808-340, N,N'-dithiodimorpholine, thiuram D, sulphenamide C, zinc white, stearic acid, N-nitrosodiphenylamine, technical carbon T 900, rosil 175, talc, chalk, petroleum polymer resin "Sibplast".
EFFECT: invention improves relative elongation at rupture of rubber and increases degree of its volumetric swelling in oil.
1 cl, 2 tbl
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Authors
Dates
2019-05-21—Published
2018-05-07—Filed