| Titre : |
Polyaniline encapsulated a-zirconium phosphate nanosheet for enforcing anticorrosion performance of epoxy coating |
| Type de document : |
texte imprimé |
| Auteurs : |
Yue Situ, Auteur ; Yanlin Guo, Auteur ; Weiwei Ji, Auteur ; Defei Liu, Auteur ; Dan Wei, Auteur ; Hong Huang, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 999-1012 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Encapsulation
Epoxydes
Humidité -- Absorption:Eau -- Absorption
Nanoparticules
Phosphate de zirconium
Polyacrylonitrile
Polymérisation par oxydation
Revêtements organiques
Revêtements protecteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyaniline (PANI) encapsulated α-zirconium phosphate (α-ZrP) nanocomposites (PANI/α-ZrP) were prepared by in situ oxidative polymerization and used as anticorrosive filler in epoxy coatings. Water absorption test and electrochemical measurements in 3.5 wt.% NaCl solution were conducted to assess the barrier properties and anticorrosion performances of different coating systems. PANI/α-ZrP composite epoxy coating showed remarkably enhanced corrosion resistance comparing to neat epoxy coating because of “maze effect” from α-ZrP and “passivation effect” from PANI. The α-ZrP nanosheets could be completely encapsulated by PANI with appropriate PANI/α-ZrP mass ratio, and the resulting nanocomposite exhibited optimal corrosion protection properties. |
| Note de contenu : |
- EXPERIMENTAL : Materials and sample pretreatment - Synthesis of a-zirconium phosphate (a-ZrP) - Synthesis of polyaniline/a-zirconium phosphate
(PANI/a-ZrP) nanocomposite - Fabrication of coating- Characterizations of nanocomposite and coating - Water absorption and anticorrosion performance
test - Characterization of substrate after being corroded
- RESULTS AND DISCUSSION : Characterization of coating Anticorrosive performance of coatings
- Table 1 : Equivalent electrical circuit models fitted for all coating systems at different immersion times
- Table 2 : Electrochemical parameters fitted from equivalent circuit
- Table 3 : Electrochemical parameters of all coating systems after 16 days of immersion in 3.5 wt.% NaCl solution |
| DOI : |
https://doi.org/10.1007/s11998-021-00452-y |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00452-y.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36208 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 999-1012
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Polyaniline encapsulated a-zirconium phosphate nanosheet for enforcing anticorrosion performance of epoxy coating in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
