| Titre : |
Poly(methyl methacrylate) intercalated layered double hydroxide film with enhanced alkaline corrosion resistance for aluminum alloy AA6061 |
| Type de document : |
texte imprimé |
| Auteurs : |
Po-Yi Liu, Auteur ; Chih-Cheng Tsai, Auteur ; Shang-Tien Tsai, Auteur ; Wen-Chyuan ChangJean, Auteur ; Shou-Chiu Cheng, Auteur ; Tseng-Chang Tsai, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 777-787 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Aluminium -- Alliages
Anticorrosifs
Anticorrosion
Bases (chimie)
Caractérisation
Electrochimie
Hydroxydes doubles lamellaires
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Polyuréthanes
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The oriented growth of Zn-Al LDH film perpendicular to the surface of AA6061 substrate was confirmed by scanning microscopy image and X-ray diffraction pattern. The LDH film achieved a complete surface coverage on the AA6061 substrate and exhibited strong corrosion resistance in NaOH solution (pH of 13). Furthermore, a preparation protocol for poly(methyl methacrylate) (PMMA)-LDH composite film was demonstrated. LDH film intercalated only with PMMA but not polyurethane demonstrated greatly enhanced alkaline corrosion resistance, showing a more positive corrosion potential and reduced corrosion current by four orders of magnitude in electrochemical polarization spectroscopy. The enhancement in corrosion resistance by PMMA intercalation could be attributed to the increasing compactness in the LDH film and increasing hydrophobicity. |
| Note de contenu : |
- EXPERIMENTAL : Substrate pretreatment procedure - Growth of LDH film coated on AA6061 - Intercalation of dodecyl sulfate anion (SDS) into LDH film - Preparation of poly(methyl methacrylate) (PMMA)—LDH hybrid film - Preparation of polyurethane (PU)—LDH hybrid film - Characterization - Electrochemical property measurement
- RESULTS AND DISCUSSION : Zn-Al LDH film as a protection layer for AA6061 - Functionalization of LDH film-coated AA6061
- Table 1 : Corrosion parameters of LDH-coated alloy plates derived from the polarization curves in 0.1 M NaOH solution
- Table 2 : Corrosion parameters of LDH–polymer composite film-coated AA6061 alloy plate derived from the polarization curves in 0.1 M NaOH solution |
| DOI : |
https://doi.org/10.1007/s11998-020-00442-0 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00442-0.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35929 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 3 (05/2021) . - p. 777-787
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