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Improved corrosion resistance based on APTES-grafted reduced sulfonated graphene/waterborne polyurethane coatings / Jian Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
[article]
Titre : Improved corrosion resistance based on APTES-grafted reduced sulfonated graphene/waterborne polyurethane coatings Type de document : texte imprimé Auteurs : Jian Luo, Auteur ; Jihu Wang, Auteur ; Shaoguo Wen ; Dayang Yu ; Youtong Wu ; Kai Sun Année de publication : 2018 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aminopropyltriethoxysilane
Anticorrosifs
Anticorrosion
Essais de brouillard salin
Graphène sulfoné
Greffage (chimie)
Polymères en émulsion
PolyuréthanesIndex. décimale : 667.9 Revêtements et enduits Résumé : In this work, reduced sulfonated graphene (RSG) containing free amine groups was prepared and modified by 3-aminopropyltriethoxysilane (APTES) and reduction by diethanolamine (DEA). In addition, waterborne polyurethane (WPU) composite coatings were prepared by adding RSG as an anticorrosive filler to WPU. From the results of Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy (SEM), it can be found that sulfonated graphene was modified with APTES and successfully reduced by DEA. The SEM images illustrated that RSG was uniformly doped in the WPU. With increasing RSG content, the hydrophobicity of the RSG/WPU films increased due to the strong covalent interaction between RSG and WPU. Finally, the corrosion resistance of the coating was characterized by polarization curves and salt spray tests. Note de contenu : - Materials
- Preparation of APTES-grafted SG
- Preparation of APTES-grafted RSG
- Preparation of RSG/WPU coatings
- Preparation of RSG/WPU films
- CharacterizationDOI : 10.1007/s11998-018-0048-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0048-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31138
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 5 (09/2018)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20232 - Périodique Bibliothèque principale Documentaires Disponible Preparation of crosslinkable cationic polyacrylate latex and its film properties / Xueke Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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Titre : Preparation of crosslinkable cationic polyacrylate latex and its film properties Type de document : texte imprimé Auteurs : Xueke Zhang, Auteur ; Kaimin Chen, Auteur ; Ziwei Li, Auteur ; Qianqian Zhang, Auteur ; Chenming Xu, Auteur ; Yue Chang, Auteur ; Shaoguo Wen, Auteur Année de publication : 2024 Article en page(s) : p. 341-354 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bases (chimie)
Humidité -- Absorption:Eau -- Absorption
Latex
Polyacrylates
Polymères cationiques
Polymérisation en émulsion
Résistance chimique
Revêtements -- Propriétés mécaniques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Cationic polyacrylate latex has attracted extensive attention due to its special properties and potential applications in wood primers, metal coatings, and fabric treatments, etc. However, cationic polyacrylate latex has poor durability and stability, which limits its use in practical applications. In this study, a functional cationic monomer (3-chloro-2-hydroxypropyl) dimethyl [2-[(2-methyl-1-oxoallyl)oxy]ethyl] ammonium chloride (DEAC) was combined with two conventional monomers of methyl methacrylate (MMA) and butyl acrylate (BA) to prepare cationic polyacrylate latex by a semi-continuous emulsion polymerization. The obtained latexes showed typical cationic character with zeta potential in the range of + 40 to + 65 mV. The effect of DEAC on the stability of latex was studied and good alkali resistance could be gained at high DEAC content. Water resistance and mechanical properties of the film before and after crosslinking are studied in detail. The results showed that the water absorption reduced from 60.04% to a minimum of 9.18%, and the tensile strength increased from 3.9 to 8.4 MPa, which was comparable to solvent-based polyacrylate films. This work provides a new strategy for the preparation of waterborne cationic polyacrylate latex with improved water resistance and good mechanical properties, etc., which can be applied in papermaking, textiles, wood primers, and other potential fields. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of DEAC - Synthesis of cationic polyacrylate latex P(MMA-co-BA-co-DEAC) - Preparation of cationic polyacrylate film - Characterization
- RESULTS AND DISCUSSION : Effect of DEAC on polyacrylate latex - Effect of DEAC on stability properties - Film properties
- Table 1 : Properties of cationic polyacrylate latex with different amounts of DEAC
- Table 2 : Properties of cationic polyacrylate latex with different amount of DEACDOI : https://doi.org/10.1007/s11998-023-00826-y En ligne : https://drive.google.com/file/d/143nNUjIN202dKWmu9uZH5XyWG-Zz61cy/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40457
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Code-barres Cote Support Localisation Section Disponibilité 24443 - Périodique Bibliothèque principale Documentaires Disponible 24735 - Périodique Bibliothèque principale Documentaires Disponible