Sistemas de Pinturas para el Control de la Biocorrosión y del Biofouling

GIUDICE, C. A.; PEREYRA, A. M.; HERRERA, L. K.; VIDELA, H. A.

“Tecnología y Ciencia”

Universidad Tecnológica Nacional

Lugar: Buenos Aires, Argentina; Año: 2008 vol. 8 p. 45 - 53

1666-6917

Abstract: The elevated degree of pollution and the high temperature of a port located in tropical latitude facilitate, in one first stage, the microbial colonization (slime film) of the metallic surfaces and later the intense fixation by epibiosis of macro organisms (biofouling) of characteristics very varied. In the present work the biofouling was firstly characterized and then protected marine coatings systems were formulated and tested in real conditions of field and laboratory. The experimental multicoats systems were based on tripigmented compositions (lamellar zinc, extenders and corrosion inhibitors) while antifouling compositions were of soluble matrix; the last ones showed in stationary state of dissolution a biocide leaching rate superior to the critical value, which means an excellent control of biofouling fixation for at least 16 months in seawater immersion. Key words: naval steel, biocorrosión, biofouling, coatings