Weathering of coil-coatings: UV radiation and thermal effects

Authors

  • A. S. Castela Instituto Superior Técnico. Chemical Eng. Department
  • A. M. Simões Instituto Superior Técnico. Chemical Eng. Department
  • G. Davies Corus, WTC
  • M. G. S. Ferreira Instituto Superior Técnico. Chemical Eng. Department

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1115

Keywords:

Organic coatings, Electrochemical impedance, XPS, FTIR

Abstract


The effect of heat and of QUV ageing on coil coatings was tested by electrochemical impedance, and the results compared with surface analysis of the polymers by FTIR and XPS. It was shown that UV radiation is more relevant than heat to chemical degradation. A different correlation between water permeation and chemical degradation was observed depending on the coating thickness: for the thinner coatings, the higher UV degradation has corresponded to increased water absorption, whereas in the thicker coating, the bulk effect of heat was more relevant to water permeation.

Downloads

Download data is not yet available.

Downloads

Published

2003-12-17

How to Cite

Castela, A. S., Simões, A. M., Davies, G., & Ferreira, M. G. S. (2003). Weathering of coil-coatings: UV radiation and thermal effects. Revista De Metalurgia, 39(Extra), 167–173. https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1115

Issue

Section

Articles