| Titre : |
Monolayer coating with multiple benefits : Nanostructured and phosphatised water-borne binders for better corrosion protection |
| Type de document : |
texte imprimé |
| Auteurs : |
Stefano Chimenti, Auteur ; MarÃa Paulis, Auteur ; Jose Ramon Leiza, Auteur ; Jesús Manuel Vega, Auteur ; Eva GarcÃa-Lecina, Auteur ; Hans-Jurgen Grande, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 18-23 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anticorrosifs
Anticorrosion
Application directe sur le métal
Essais de brouillard salin
Latex
Liants en phase aqueuse
Métaux -- Revêtements protecteurs
Résistance à l'humidité:Résistance à l'eau
Réticulation (polymérisation)
Revêtement monocouche
Surfactants
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Direct-to-metal coatings need exceptional corrosion protection, often provided by multiple layered systems. Providing the necessary level of protection in a single layer and as a VOC-conform water-borne coating involves complex formulation, however, a phosphated surfmer may offer one solution. A nanostructured and phosphatised monolayered coating withstands rigorous testing. |
| Note de contenu : |
- Surfmer creates phosphated passive layer
- Colour measurement may indicate phosphatisation
- Enhanced corrosionprotection of passive interface
- Nanodomains present barrier to metal substrate
- Fig. 1 : Polymerisable surfactant and two-stage polymerisation procedure ho obtain the surface-functionalised water-borne polymeric binders
- Fig. 2 : Schematic representation of iron phosphate layer formation la and b) and evidence of the iron phosphate passivating layer : (c) photograph of thin film deposited on steel ; (d) SEM-EDX of the coating surface alter being detached from the steel substrate
- Fig. 3 : Artificial defect made by laser in 3D (a) and 2D [b). Images of P0A/MMA/BA_novel system with the defect before (cl and during exposure (d) to the droplet test (3.5 wt.% NaCI) in the SKP. Coated specimens were dried (c) under controlled conditions, and (cl) under uncontrolled conditions
- Fig. 4 : TEM images of fhe free film cross-sections of SA/MMA/BA_novel and POA/MMA/BA_novel
- Fig. 5 : Steel coafed wifh POA/MMA/ BA_novel latex after 1400 h of sali spray test and non-optimised MMA/BA water-borne latex affer 47 h of salt spray test
- Table 1 : CIE L*a*b from the colour measurements
- Table 2 : Corrosion resistance properties of fhe synthesised latex binder films
- Table 3 : Water resistance properties of the synthesised latex binders |
| En ligne : |
https://drive.google.com/file/d/1iszx2Ppzg1pBBnOIGl0vWjf_ty7bNVl0/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35859 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2021) . - p. 18-23
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Monolayer coating with multiple benefits in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2021)
