Predicting water transport in multilayer coatings

被引：24

作者：

Baukh, Viktor ^{[1
]}

Huinink, Hendrik P. ^{[1
]}

Adan, Olaf C. G. ^{[1
,2
]}

Erich, Sebastiaan J. F. ^{[1
,2
]}

van der Ven, Leendert G. J. ^{[3
]}

机构：

[1] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

[2] TNO, Delft, Netherlands

[3] AkzoNobel Automot & Aerosp Coatings, Sassenheim, Netherlands

来源：

POLYMER | 2012年 / 53卷 / 15期

关键词：

Water transport; Diffusion; Model; ORGANIC COATINGS; SORPTION; FILMS;

D O I：

10.1016/j.polymer.2012.05.043

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Water transport in polymer coatings is a key process in their failure. Mostly, such systems are composed of multiple layers to meet the required specifications. Understanding water transport requires a model that relates the kinetics with the properties of the layers. In this article a theoretical model for water transport in two-layered coatings is formulated and verified. The model considers systems consisting of a hydrophobic top coat and a hydrophilic base coat. It describes the process on the basis of the top coat permeability and the base coat sorption isotherm, which define the timescale and the driving force of transport. The systems of interest had a base coat sorption isotherm, which indicated that sorption is a process of clustering of water. The non-linear isotherm shape resulted a timescale for uptake and drying of days and hours, respectively. The model is verified with NMR imaging of water transport and gravimetry. Practically, the results mean that it is sufficient to measure the top coat permeability and the base coat sorption isotherm to understand water transport kinetics in such systems. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：3304 / 3312

页数：9

共 24 条

[1] Water transport in multilayer organic coatings [J].

Allahar, K. N. ;

Hinderliter, B. R. ;

Tallman, D. E. ;

Bierwagen, G. P. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (08) :F201-F208

[2]

Atkins P, 2006, ATKINS PHYS CHEM

[3]

Bahaj H, 2010, THERM ANAL CALORIM, V103, P117

[4]

Barrie J. A., 1975, DIFFUSION POLYM

[5] Water-Polymer Interaction during Water Uptake [J].

Baukh, Viktor ;

Huinink, Hendrik P. ;

Adan, Olaf C. G. ;

Erich, Sebastiaan J. F. ;

van der Ven, Leendert G. J. .

MACROMOLECULES, 2011, 44 (12) :4863-4871

[6] NMR Imaging of Water Uptake in Multi layer Polymeric Films: Stressing the Role of Mechanical Stress [J].

Baukh, Viktor ;

Huinink, Hendrik P. ;

Adan, Olaf C. G. ;

Erich, Sebastiaan J. F. ;

van der Ven, Leendert G. J. .

MACROMOLECULES, 2010, 43 (08) :3882-3889

[7] PROBLEMS OF MEASURING WATER SORPTION IN ORGANIC COATINGS AND FILMS, AND CALCULATIONS OF COMPLICATED INSTANCES OF MOISTENING [J].

BLAHNIK, R .

PROGRESS IN ORGANIC COATINGS, 1983, 11 (04) :353-392

[8] On a theory of the van der Waals adsorption of gases [J].

Brunauer, S ;

Deming, LS ;

Deming, WE ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :1723-1732

[9] Electrochemical characterisation of multilayer organic coatings [J].

Carbonini, P ;

Monetta, T ;

Nicodemo, L ;

Mastronardi, P ;

Scatteia, B ;

Bellucci, F .

PROGRESS IN ORGANIC COATINGS, 1996, 29 (1-4) :13-20

[10] Monitoring degradation of single and multilayer organic coatings - I. Absorption and transport of water: Theoretical analysis and methods [J].

De Rosa, L ;

Monetta, T ;

Mitton, DB ;

Bellucci, F .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (11) :3830-3838

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