| 摘要 |
FIELD: rubber industry. ^ SUBSTANCE: invention relates to a rubber mixture comprising the following components, mas. p. p.: isoprene rubber, 45-50; cis-1,4-polybutadiene rubber, 1.25-12.5; sulfur, 0.16-0.22; tetramethylthiuram disulfide, 0.84-1.12; zinc white, 2.79-3.72; diaphene FP, 0.56-0.74; stearic acid, 1.12-1.5; phthalic anhydride, 0.56-0.74; technical carbon with the specific geometric surface value 50-57 m2/g, 30.94-41.25; petroleum bitumen with softening point by the ring and ball method 80-90°C, 3.94-5.26, and industrial oil, 0.84-1.12. Invention provides improving the strength indices and enhancing longevity of articles made of the proposed rubber mixture. The proposed rubber mixture is used in making thickening rubber fillers in blocks used in ring working of subway tunnels. ^ EFFECT: improved and valuable technical properties of rubber mixture. ^ 3 tbl
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