Vorobyova V. Сombinative volatile atmospheric corrosion inhibitors for steel based on plant materials

The dissertation covers the studies of development volatile inhibitors atmospheric corrosion for steel based on organic compounds of plant materials. The study of various extracts plant material and its processing wastes showed the feasibility of using rapeseed cake extract and hop cones extract to develop vapor-phase corrosion inhibitors. The volatile chemical composition the extract of cake oil rape seeds and hop cones were analysed by gas chromatography-mass spectrometry methods. It was found the inhibition action of hop cones extract is probably attributed to the presence of monoterpene phenols (thymol, carvacrol, menthol) and aldehydes (Benzaldehyde, 4-hydroxy-3,5-dimethoxy), the inhibition action the rapeseed cake extract was attributed to the presence of ketone (3',5'-Dimethoxyacetophenone), aldehydes (Benzaldehyde, 4-hydroxy-3,5-dimethoxy) and glycosides(guanosine).The effective synergistic mixture composition of volatile inhibitors based on organic compounds of plant materials and N-contained compounds was developed. It is established, that extracts of cake oil rape seeds and hop cones and composite mixtures based on them are mixed type inhibitor. Inhibition of corrosion steel is due to blocking of steel surfaces chemically adsorbed molecules compounds. In terms of industrial warehouse and open area found that inhibitors developed composite consisting of packaging material provide temporary protection of metal.Keywords: Volatile inhibitor, Atmospheric corrosion, the extract of cake oil rape seeds, the extract hop cones.