Weathering of a polyester-urethane clearcoat: lateral inhomogeneities

Hesam Makki, Koen N.S. Adema, Marco M.R.M. Hendrix, Elias A.J.F. Peters, Jozua Laven, Leendert G.J. van der Ven, Rolf A.T.M. van Benthem, Gijsbertus de With

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
3 Downloads (Pure)

Abstract

This paper is devoted to the surface analysis of a polyester-urethane coating during weathering under different conditions using artificial weathering machines. By means of atomic force microscopy (AFM), the evolution of the surface topology of the coatings is studied. Degradation is shown to be a laterally inhomogeneous process. The presence of water facilitates material removal and leads to an increase in the surface roughness and consequently a gloss loss. In addition, by comparing degradation under aerobic and anaerobic conditions, it is shown that oxidation reactions are the main cause of lateral inhomogeneous degradation of coatings.

Original languageEnglish
Pages (from-to)180-186
Number of pages7
JournalPolymer Degradation and Stability
Volume122
DOIs
Publication statusPublished - 1 Dec 2015

Keywords

  • AFM
  • Polyester-urethane
  • Surface topology
  • Weathering

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