Estudio de la entrada de agua en pinturas de base aguaComparación entre pintura aplicada y libre

  1. Pérez, C. 1
  2. Collazo, A. 1
  3. Izquierdo, M. 2
  4. Nóvoa, X. R. 2
  5. Merino, P. 1
  1. 1 Dpto. de Ingeniería de Materiales, Mecánica Aplicada y Construcción. E.T.S. Ing. Ind. y de Minas, Univ. de Vigo
  2. 2 Dpto. de Ingeniería Química. E.T.S. Ing. Ind. y de Minas, Univ. de Vigo
Revue:
Revista de metalurgia

ISSN: 0034-8570

Année de publication: 1998

Volumen: 34

Número: 0

Pages: 122-126

Type: Article

DOI: 10.3989/REVMETALM.1998.V34.IEXTRA.723 DIALNET GOOGLE SCHOLAR lock_openAccès ouvert editor

D'autres publications dans: Revista de metalurgia

Résumé

Paints behave as barriers to protect the metallic substrate against corrosion. In the present work, the water uptake in an acrylic water-borne paint was studied under two different conditions: supported and free film, immersed in a sodium chloride 5 % solution. Using the impedance spectroscopy (IS) technique, a sharp increase in the film capacitance was observed, which is related to the volume fraction of water taken into the film by using the Brasher-Kinsbury equation. The results suggested that there was no big differences between both situations. The calculated apparent diffusion coefficient suggests that the difference between both tested situations is of minor importance.

La source de données: Dialnet