Friendly to environment heterocyclic adducts as corrosion inhibitors for steel in water-borne paints

Two groups of emulsion paints were formulated to evaluate the efficiency of emulsified heterocyclic adducts: 2-mercaptothiazoline (2-MT), 2-mercaptobenzothiazole (2-MBT), 2-mercapto-5-methyl-1,3,4-thiadiazole (2-MMT), and 3-mercapto-4-methyl-4H-1,2,4-triazole (3-MMT). Different concentrations of 2-M...

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Bibliographic Details
Published in:Journal of applied polymer science 2010-08, Vol.117 (3), p.1270-1278
Main Authors: Mohamed, H.A, Farag, A.A, Badran, B.M
Format: Article
Language:English
Subjects:
Adducts
adsorption
Applied sciences
coatings
Coatings. Paints, varnishes and inks
Computational efficiency
Computing time
Corrosion
Corrosion inhibitors
Corrosion prevention
Exact sciences and technology
heteroatom-containing polymers
Metals. Metallurgy
orientation
Paints
Polymer industry, paints, wood
Protective coatings
resists
Structural steels
Uses
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Summary:Two groups of emulsion paints were formulated to evaluate the efficiency of emulsified heterocyclic adducts: 2-mercaptothiazoline (2-MT), 2-mercaptobenzothiazole (2-MBT), 2-mercapto-5-methyl-1,3,4-thiadiazole (2-MMT), and 3-mercapto-4-methyl-4H-1,2,4-triazole (3-MMT). Different concentrations of 2-MT adduct, which has the simplest structure were added in water-borne paint formulations based on urabrid AC 100 emulsion resin to detect the optimum concentration range of the adduct as corrosion inhibitor. The efficiency of all the emulsified adducts has been studied at constant concentration within the optimum range in order to arrange them according to their efficiency as corrosion inhibitor for mild steel. Chemical, mechanical, corrosion resistance and water up-take tests of paint films were measured. Weight loss measurements (mg/cm²), for steel panels under paint films and the steel corrosion inhibition efficiency of adduct has been determined. It was found that the prepared water-borne adducts could protect steel from corrosion and their efficiencies as corrosion inhibitors could be arranged in descending order: 3-MMT > 2-MMT > 2-MBT > 2-MT adducts.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.31838