| Titre : |
Hydrophobic modification of ZnO-MIO based epoxy coating for ferrous and non-ferrous substrates |
| Type de document : |
texte imprimé |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 55-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anticorrosifs
Anticorrosion
Application directe sur le métal
Epoxydes
Métaux -- Revêtements protecteurs
Nanoparticules
Oxyde de fer micacé
Oxyde de zinc
Revêtement monocouche:Peinture monocouche
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Corrosion protection is a challenge to the humankind and lot of work is in progress to improve long term corrosion resistance by developing efficient coating system in a cost effective manner. Efforts on monocoat systems are getting profound interest and importance in industries over conventional primer, topcoat based two coat system or primer, high build MIO and topcoat based three coat system. Higher productivity, fast return to service, lower manpower and inventory cost make monocoat system highly desired. This research is aimed at developing a new and improved coating that employs silane modified hydrophobic nano zinc oxide coated micaceous Iron oxide as the active pigment to achieve synergistic corrosion resistant and barrier properties in a single coat that can combine the effect of primer and high build MIO coat. In the present paper synergistic effect and performances of silane modified hydrophobic nano zinc oxide coated micaceous Iron oxide were studied on different type of metalIic substrates. |
| Note de contenu : |
- EXPERIMENTAL METHODOLOGY : Preparation of Nano Zinc oxide (ZnO) coated Micaceous Iron oxide (MIO) - Hydrophobic modification of nano-ZnO-MIO - Paint preparation
- TEST MEDHODS : SEM &Water Vapour Permeability - Salt spray resistance test - Pull off adhesion test - Contact angle measurement - Humidity resistance and DM water resistance test
- RESULTS & DISCUSSION : Summary of the results - Contact angle measurement - Water vapour permeability - Pull off adhesion testing - Cathodic disbondment
- SALT SPRAY TEST RESULTS : Humidity resistance and water resistance
- Fig. 1 : Cathodic disbondment (CD) - testing protocol
- Fig. 2 : FESEM images of zinc oxide coated MIO
- Fig. 3 : Digital photograph of the water droplet formed on the coated panels
- Fig. 4 : Weight gain by the paint film in presence of water vapour
- Fig. 5 : Digital photograph for pull of adhesion of the paint on the metal substrate
- Fig. 6 : Photos of cathodic delamination of different trial after 90 days at 25°C
- Fig. 7 : Relative disbondment radius of all the formulations
- Fig. 8 : MS panels showing salt spray test after 1000 hrs
- Fig. 9 : Galvanized panels showing salt spray test after 1000 hrs
- Fig. 10 : Humidity resistance on unprepared galvanised substrate |
| En ligne : |
https://drive.google.com/file/d/1yr3KKEv7ZkUoXxywWPVIl_6c3b-tkiXJ/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32818 |
in PAINTINDIA > Vol. LXIX, N° 7 (07/2019) . - p. 55-66
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Hydrophobic modification of ZnO-MIO based epoxy coating for ferrous and non-ferrous substrates in PAINTINDIA, Vol. LXIX, N° 7 (07/2019)
