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
Revista:
Revista de metalurgia

ISSN: 0034-8570

Ano de publicación: 1998

Volume: 34

Número: 0

Páxinas: 122-126

Tipo: Artigo

DOI: 10.3989/REVMETALM.1998.V34.IEXTRA.723 DIALNET GOOGLE SCHOLAR lock_openAcceso aberto editor

Outras publicacións en: Revista de metalurgia

Resumo

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.

Fonte de datos: Dialnet