| Titre : |
Production and application of biochar in a UV radiation-curable epoxy paint as a substitute for graphite |
| Type de document : |
texte imprimé |
| Auteurs : |
Júlio Marchesini, Auteur ; Daniele Perondi, Auteur ; Marcos VinÃcius Marocco, Auteur ; Valéria Grabas Pellizzoni, Auteur ; Gustavo Onzi Carberlon, Auteur ; Marcelo Godinho, Auteur ; Diego Piazza, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 957-971 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Angle de contact
BiocharLe biochar est un amendement du sol issu de la pyrolyse de biomasse. Il est utilisé en agriculture pour augmenter la qualité des sols, et donc leur productivité ; il est également utilisé dans la lutte contre le réchauffement climatique comme solution de séquestration à long terme de carbone atmosphérique dans les sols.
Le biochar se différencie du charbon de bois par son utilisation (comme intrant plutôt que comme combustible) et donc par son impact environnemental (il agit comme un puits de carbone plutôt que de libérer du CO2 dans l'atmosphère lors de la combustion).
Caractérisation
Déchets industriels -- Recyclage
Epoxydes
Essai Wolff-Wilborn
Essais de brouillard salin
Graphite
Photoréticulation
Production
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Research on the use of sustainable fillers which promote improvements in the paints has been reported over the years. The present study investigated the production and characterization of a biochar produced from Pinus elliottii for application in an epoxy paint cured by ultraviolet radiation, comparing it with graphite, in proportions of 12.5 and 20 wt%. The Pinus elliottii sample was initially ground, and then submitted to physical and morphological characterization by field emission scanning electron microscopy (SEM) and X-ray diffraction (XRD). Later, the Pinus elliottii sample was subjected to pyrolysis at a temperature of 1050°C at a low heating rate (5°C/min). Biochar and graphite were separately incorporated into an epoxy UV-curable paint. The painted samples had their thickness measured and their mechanical and physical properties evaluated, namely gloss, hardness, bending, impact, contact angle with water, and exposure to salt spray. Biochar and graphite promoted a reduction in gloss and improved pencil hardness when incorporated into a UV-curable epoxy paint. In the salt spray resistance test, samples containing both biochar and graphite showed a slight delay in the beginning of the corrosion process. However, samples with biochar behaved better than samples with graphite in terms of blistering of the film in the incision region. |
| Note de contenu : |
- MATERIALS AND METHODS
- RESULTS AND DISCUSSION : Biochar production - Characterization of biochar and graphite - Characterization of UV-curable paints
- Table 1 : Nomenclature and composition of the paint samples produced
- Table 2 : Results of specific surface area and pore distribution of biochar
- Table 3 : Gloss measurement results of cured paint samples
- Table 4 : Pencil hardness test results
- Table 5 : Contact angle test results
- Table 6 : Salt spray test results |
| DOI : |
https://doi.org/10.1007/s11998-022-00715-w |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-022-00715-w.pdf?pdf=button% [...] |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39440 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 957-971
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Production and application of biochar in a UV radiation-curable epoxy paint as a substitute for graphite in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
