[article]
| Titre : |
Self stratifying coating : A review |
| Type de document : |
texte imprimé |
| Auteurs : |
Sudip Nath, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 31-40 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
Autostratification 'Article synthèse' 'Revêtement multicouche' Stratification 'Formation film' Peinture 'Matériau revêtement' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this paper, recent advances in coating industries namely self-stratifying coating has been discussed from mechanistic point of view. After application as thinned film, self stratifying coating does spontaneously form two coherent layers as base coat/clear coat, primer/top coat in one single operation. The necessary requirements for this type of coating have been discussed in detail, including compatibility between the resins, surface energies and other parameters. Stratification can be predicted from the extent of overlaping of solubility spheres using Hansen solubility parameters (HSP) and surface energies. Various factors like evaporation rate, viscosity, film thickness and curing rate effecting self stratifying coating have also been focused on. Very good stratification have been observed in epoxy/acrylic, epoxy vinylether copolymer and epoxy/floro ethelene in their unpigmented systems. Success have also been achieved to locate a protective pigment in the primer and subsequent clear over it. Good stratification were also formulated with the adhesion promote silane coated rutile, where protective pigment was located in the primer layer while rutile in top-coat. |
| Note de contenu : |
- THEORY FOR STRATIFICATION
- NECESSARY CONDITION FOR STRATIFICATION
- PREDICTION OF STRATIFICATION - Application of Hansen solubility parameter (HSP) - Stratification from solid resin surface energies - Solution surface energies
- FACTOR EFFECT STRATIFICATION - Preferential evaporation of solvents - Effect of curing agents on stratification - Film thickness - Pigments systems - Molecular weight - Additives |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12413 |
in PAINTINDIA > Vol. LII, N° 10 (10/2002) . - p. 31-40
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Self stratifying coating : A review in PAINTINDIA, Vol. LII, N° 10 (10/2002)
