| Titre : |
Enhanced wear resistance of epoxy coatings on steel using graphene oxide |
| Type de document : |
texte imprimé |
| Auteurs : |
Amanda B. Filizzola, Auteur ; Joao L. N. Pereira, Auteur ; Pollyanna R. dos Santos, Auteur ; Felipe da S. Medeiros, Auteur ; Sthéfany Z. S. do Amparo, Auteur ; Claudia K. B. de Vasconcelos, Auteur ; Glaura G. Silva, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 215-228 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Abrasion
AcierL'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Epoxydes
Flexion (mécanique)
Métaux -- Revêtements
Mouillabilité
Oxyde de graphène
Résistance à l'usure
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Graphene oxide (GO) addition to epoxy can improve various properties provided that the GO features, dispersion and interaction with epoxy are optimized. Herein, the challenge of improving the hydrophobicity, flexural behavior and wear resistance of an epoxy coating on steel substrate was addressed by GO incorporation. Three GO concentrations were tested in the epoxy system (0.1, 0.25, and 0.50% m/m), and nanocomposites were prepared via roller mill. An increase in the thermal stability of the pure epoxy by 23°C was observed for the nanocomposites as a function of GO incorporation. XPS analyses were carried out to study the interaction between DGEBA and GO, and the results show that a covalent link was formed between GO and epoxy. The wettability test showed an increase of 26° in the contact angle while the behavior of the system from mechanical bending tests showed gains of 52% in the energy to fracture for the sample containing 0.5 wt.% GO with respect to the neat epoxy. The wear of the coatings showed a 31% decrease in the wear coefficient of the nanocomposite compared to the reference. The set of results reported in the present work pointed to the epoxy/GO coating as promising in terms of hydrophobicity and wear properties. |
| Note de contenu : |
- Chemicals and reagents
- Synthesis of GO
- Nanocomposite coating preparation and application on the substrate - Characterization
- Table 1 : Chemical composition (wt.%) of the steel substrate
- Table 2 : Elementary analysis for the GO sample
- Table 3 : Glass transition temperature and percentage of cure of the samples under study obtained by DSC in triplicate
- Table 4 :- Binding energy and percentage of the components from C1s, O1s and N1s XPS spectra for epoxy and epoxy-GO samples |
| DOI : |
https://doi.org/10.1007/s11998-023-00811-5 |
| En ligne : |
https://drive.google.com/file/d/1mChElztnOwMgBPz0JSjniPQ_xRRrimnN/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40442 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 1 (01/2024) . - p. 215-228
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Enhanced wear resistance of epoxy coatings on steel using graphene oxide in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
