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Anticorrosive properties of an epoxy-Meldrum acid cured system catalyzed by erbium III trifluromethanesulfonate |
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| Authors: | S.J. Garcí a,J. Suay |
| Affiliation: | aÁrea de Ciencia de los Materiales, Departament d’Enginyeria de Sistemes Industrials i Disseny, Universitat Jaume I, Avda, Vicent Sos Baynat s/n, 12071 Castellón, Spain bCentro de Biomateriales, Universitat Politècnica de València, Camino de Vera s/n, E-46071 Valencia, Spain |
| Abstract: | New low curing temperature powder epoxy coatings cured with Meldrum's acid and catalyzed by the use of erbium III trifluoromethanesulfonate have been formulated. Their curing kinetics and anticorrosive properties have been studied and compared with a system commonly used in industry (o-tolylbiguanide/epoxy resin) and with an epoxy powder coating homopolymerized by erbium III trifluoromethanesulfonate. Three different tests of anticorrosive properties (EIS, AC/DC/AC and salt fog spray) have been used together with an adherence test, in order to establish the best system. Results show that systems crosslinked with Meldrum's acid and catalyzed with erbium triflate present very fast curing kinetics and very good anticorrosive properties. The technique AC/DC/AC has shown its ability to evaluate properly and much faster than other techniques the anticorrosive properties of powder coatings. |
| Keywords: | EIS AC/DC/AC Biguanide Meldrum acid Triflate Powder coating Salt fog spray |
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