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Solventborne paint systems on carbon steel and hot-dip galvanised steel for a wide range of atmospheric exposures

AuthorsFragata, F.; Fuente, Daniel de la; Almeida, E.; Santos, D.; Morcillo, Manuel
Issue Date2007
PublisherKluwer Academic Publishers
CitationJournal of Coatings Technology Research 4: 75-87 (2007)
AbstractThe paper analyzes the performance of solventborne paint systems applied on carbon steel and hot-dip galvanized steel in a wide range of atmospheric exposures. The study has involved paint systems exposure for 3.5 years in eight natural atmospheres. The atmospheric conditions cover from temperate rural climates to tropical severe marine and Antarctic coastal regions. The paint systems included several alkyds formulated with a variety of pigments (anticorrosive and barrier), epoxies, chlorinated rubber, and zinc-rich (ethyl silicate and epoxy). It has been concluded that in rural and urban atmospheres alkyd systems afford equivalent anticorrosive protection of steel to the epoxy/polyurethane system. The toxic red lead pigment may be replaced in long linseed-oil alkyd primer paints by non-toxic pigments, such as a mixture of micaceous iron oxides (MIO) and black iron oxides or zinc phosphate, without affecting the anticorrosive properties of the paint system. In aggressive atmospheres (industrial, marine), paint systems including zinc-rich primers or applied on galvanized steel must be used, especially in surface regions with coating faults (scribes).
Identifiersdoi: 10.1007/s11998-007-9003-6
issn: 1547-0091
Appears in Collections:(CENIM) Artículos
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