Back to Search
Start Over
Natural versus accelerated weathering : understanding water kinetics in bilayer coatings
- Source :
- Progress in Organic Coatings, 76(9), 1197-1202. Elsevier, Progress in Organic Coatings, 9, 76, 1197-1202
- Publication Year :
- 2013
-
Abstract
- Exposure to water is a key issue in the performance of multilayer coatings. It may take place in different forms, i.e. as rainfall, dew and humidity variation. Consequently, coatings will experience time-dependent water activity fluctuations. In industrial practice, coatings are subjected to artificial water activity fluctuations in weathering tests. Little is known about the connection between these tests and the reality experience by a coating. This article presents a theoretical investigation of the response of multilayer coatings to water activity fluctuations. This investigation is performed on the basis of a validated model for water transport in hydrophilic base coat/hydrophobic top coat systems. The study aims to understand how permeability and sorption properties determine the overall coating response to fluctuations. It is concluded that present accelerated weathering tests do not mimic natural weathering due to the response time of the considered systems, which are insensitive to rapid fluctuations. © 2013 Elsevier B.V. © 2013 Elsevier B.V. All rights reserved.
- Subjects :
- Materials science
Water activity
General Chemical Engineering
Weathering
High Tech Systems & Materials
engineering.material
Coating
Water kinetics
Materials Chemistry
Composite material
TS - Technical Sciences
Water transport
Industrial Innovation
Fluid Mechanics Chemistry & Energetics
Physics
Organic Chemistry
Humidity
Accelerated weathering
Sorption
Surfaces, Coatings and Films
Permeability (earth sciences)
RMC - Responsive Materials & Coating
Multilayer coatings
engineering
Dew
Subjects
Details
- Language :
- English
- ISSN :
- 03009440
- Database :
- OpenAIRE
- Journal :
- Progress in Organic Coatings, 76(9), 1197-1202. Elsevier, Progress in Organic Coatings, 9, 76, 1197-1202
- Accession number :
- edsair.doi.dedup.....2935ee5c1eca7401aba0bc7d154064b3