| Titre : |
Waterborne epoxy resins modified by reactive polyacrylate modifier with fluorinated side chains |
| Type de document : |
texte imprimé |
| Auteurs : |
Hongyi Shi, Auteur ; Sha He, Auteur ; Lu Weiqu, Auteur ; Yankun Xie, Auteur ; Liyan Liang, Auteur ; Ke Pi, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 427-437 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Chimie des surfaces
Dispersions et suspensions
Emulsifiants
Energie de surface
Epoxydes
Essai Wolff-Wilborn
Fluoropolymères
Humidité -- Absorption:Eau -- Absorption
Inversion de phase (chimie)
Polyacrylates
Polymères en émulsion
Revêtements -- Propriétés thermiques
Revêtements en phase aqueuse
Revêtements organiques
Souplesse (mécanique)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Waterborne difunctional polyacrylate with long fluorinated side chains and epoxy groups (WALF) was successfully synthesized and used as emulsifier and reactive surface modifier for epoxy resin. The structure of WALF was characterized by FTIR and 1H NMR. In order to investigate the effect of the length and the content of the fluorinated side chains on the properties of the epoxy thermosets, a waterborne difunctional polyacrylate with short fluorinated side chains and epoxy groups (WASF) was developed as a contrast modifier. The waterborne epoxy emulsion modified by WALF or WASF was prepared through phase inversion method. Transmission electron microscopy (TEM) signified that the waterborne epoxy emulsion has a particle size range of 201.4–590.2 nm, indicating excellent water dispersion property. In addition, the surface properties, thermal properties, and mechanical properties of the waterborne epoxy coating were also analyzed in detail. Compared with WASF, the epoxy coating modified by WALF had higher surface fluorine atomic concentration, lower surface energy, and higher thermal stability. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of fluorinated macronomer PHFBMA-GMA - Synthesis of WA, WALF, and WASF - Preparation of FWEA emulsion - Preparation of FWEA coating - Characterization
- RESULTS AND DISCUSSION : Structure characterization of WALF - Average particle size and TEM of fluorinated waterborne epoxy–polyacrylate particles - Surface properties of FWEA coatings - Surface composition of FWEA coatings - Thermal properties of FWEA coatings - Pencil hardness, adhesion, flexibility, and water absorption of FWEA, FWEASF, and FWEALF coatings |
| DOI : |
https://doi.org/10.1007/s11998-019-00288-1 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-019-00288-1.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33993 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 2 (03/2020) . - p. 427-437
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