Titre : |
Applying coatings outside of the recommended thickness range |
Type de document : |
texte imprimé |
Auteurs : |
Chrissy Stewart, Auteur ; Richard A. Burgess, Auteur |
Année de publication : |
2014 |
Article en page(s) : |
p. 15-23 |
Langues : |
Américain (ame) |
Catégories : |
Analyse des défaillances (fiabilité) Cahier des charges Epaisseur -- Défauts Revêtements -- Défauts:Peinture -- Défauts
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
The manufacturer's Product Data Sheet (PDS) should always be consulted when recommending a coating or coating system for a specification or when coatings will be applied. The PDS typically contains information regarding appropriate uses and environments, performance characteristics, and application information, including mixing, application methods and equipment, and the recommended thickness range for the mate-rial. The information provided by the manufacturer should be followed closely to maximize performance of the coating material.
Coating materials are selected for application with a target application thickness in mind. The manufacturer's recommended range and the thickness indicated in the project specification should be in agreement. If a discrepancy exists, the specifier and the coating manufacturer should be contacted. When applied at the appropriate thickness, the physical and protective properties of the coating material are optimized. Often, a problem with coating performance can occur if not enough attention is given to the thickness at which the materials are to be applied.
This article will investigate the possible failure mechanisms that can occur if a coating is applied at insufficient or excessive thickness. |
Note de contenu : |
- INSUFFICIENT COATING THICKNESS
- CONSEQUENCES OF INSUFFICIENT COATING THICKNESS : Visibility of substrate - Pinpoint - Cracked, brittle coating
- CONSEQUENCES OF EXCESSIVE COATING THICKNESS : Sagging and running - Cracking and delamination - Wrinling - Increased dry time
- METHODS OF COATING THICKNESS MEASUREMENT : Took gage - Nondestructive coating thickness gage - Microscope equipped with scale |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21658 |
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 31, N° 2 (02/2014) . - p. 15-23