| 摘要 |
FIELD: corrosion protection. ^ SUBSTANCE: invention relates to preparation of composition to protect against corrosion basic structural materials used utilized in oil and gas storage tanks, pipelines, and bridge constructions. Composition contains, wt %: polymeric film-forming substance 46-58, naturally occurring fine-scale alpha-ferrous oxide variety 12-30, organosilicon hardener 12-17, thiocol 7-10, and synthetic silica (Aerosil A-175). Polymeric film-forming substance is solution of epoxide resin E-41 in xylene and acetone. Naturally occurring fine-scale alpha-ferrous oxide variety is specularite originated from Altai deposit "Rudny Log" with contents of silica, alumina, magnesium oxide, and calcium oxide no higher than 2,5, 1.8, 0.2, and 0.3, respectively, and 85-95% alpha-ferrous oxide (Fe2O3). Fractional composition of specularite: fraction above 70 mum up to 2%, below 40 mum up to 3% and 40-70 mum - the balance. Organosilicon hardener is an organosilicon amine derivative. ^ EFFECT: increased viscosity of composition and reduced number of coating layers at the same principal performance characteristics and prolonged lifetime. ^ 2 tbl, 6 ex |
