[article]
| Titre : |
Preparation of dendritic–linear polyether-modified silica sol and its application in coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Ping Yu, Auteur ; Xingxing Zhu, Auteur ; Jidong Gao, Auteur ; Shengying Wu, Auteur ; Lei Tang, Auteur ; Shaobo Xiong, Auteur ; Limin Wang, Auteur ; Gang Zou, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 963-971 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Morphologie (matériaux)
Polyéthers
Polymères dendritiques
Résistance aux taches
Revêtements -- Additifs:Peinture -- Additifs
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Dendritic–linear polyether-modified silica sol (DLPS) was synthesized using diethylenetriamine, methyl acrylate, epoxy-terminated polyether, triethoxysilane, and silica sol in five steps. The prepared sol was stable and transparent. DLPS was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and particle size distribution analysis. Subsequently, DLPS was examined as a stain-resistant additive in (paint) coatings. The surface of the sample coatings with and without DLPS additive was examined by scanning electron microscopy, energy-dispersive spectrometry analysis, and contact angle analysis. The results showed that the stain-resistant additive appeared on the surface of the coating, which made the surface more compact and hydrophilic. The performance of the stain-resistant additive was examined in commercial outdoor emulsion coatings (WB200). The result showed that the presence of the stain-resistant additive could enhance the stain resistance performance of paint. Furthermore, the stain resistance performance improved with increasing amounts of additive. Specifically, the stain resistance performance of paint improved by 40.63% in the presence of 6 wt% DLPS. Therefore, the current findings demonstrate the importance of DLPS in advancing progress and application in the paint coating industry. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of dendritic–linear polyether-modified silica sol (DLPS) - Preparation of sample boards and stain resistance test (Preparation of sample boards - Stain resistance test - Characterization)
- RESULTS AND DISCUSSION : FTIR studies - TGA studies - Particle size distribution analysis - Surface wettability - Stain resistance studies - Surface morphology analysis - Chemical composition analysis |
| DOI : |
10.1007/s11998-016-9807-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9807-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27243 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 6 (11/2016) . - p. 963-971
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