Synthesis of acrylic-modified water-reducible alkyd resin: improvement of corrosion resistance in painting formulations / Figen Aynali in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 2007-2017 Titre : Synthesis of acrylic-modified water-reducible alkyd resin: improvement of corrosion resistance in painting formulations Type de document : texte imprimé Auteurs : Figen Aynali, Auteur ; Gürcan Sakar, Auteur ; Elif Suna Kocyigit, Auteur ; Alper Kades, Auteur Année de publication : 2023 Article en page(s) : p. 2007-2017 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acrylique Adhésion Anticorrosifs Anticorrosion Caractérisation Matériaux -- Modifications chimiques Monomères Organosilanes Polyalkydes Polymères -- Synthèse Revêtements -- Effets de l'humidité:Peinture -- Effet de l'humidité Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Revêtements organiques Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, we investigated the effect of organosilane monomer on the adhesion strength and corrosion protection of the water-reducible alkyd coatings. For this purpose, firstly, alkyd resin was synthesized and modified with acrylic monomers by changing organosilane monomer content in the range of 4–16 wt% in all acrylic monomer compositions. Then, the carboxyl groups on the hybrid resins were neutralized with a base and the coating recipes were formulated using these water-reducible resins. The chemical structure and composition of the synthesized polymers were confirmed using 1H-NMR and FTIR spectroscopies. Mechanical properties of coatings applied on the cold-rolled steel surfaces were investigated via crosshatch adhesion, pendulum hardness, gloss, impact, and conical mandrel bend tester. According to the results, it can be said that water-reducible acrylic-modified alkyd coatings offer a good balance of hardness and flexibility. Then, the line was scratched parallel to the coating system and the surface coating properties of the coated panels, such as the adhesion strength after being exposed to humidity and corrosion resistance, were comparatively investigated. The best results for corrosion resistance and adhesion strength were obtained with the coating which was formulated with the resin having organosilane monomer of 8 wt% in all acrylic monomer mixtures. As the organosilane monomer amount increased to 16 wt%, the coatings’ corrosion resistance and adhesion strength decreased. As a result, it was observed that organosilane modification is significantly effective in improving the adhesion strength and corrosion resistance of water-reducible alkyd coatings. However, increasing the amount of silane monomer may reverse the positive results obtained. This study also reveals significant results about the correlation between the adhesion strength and corrosion resistance of coatings by presenting visual results. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of water-reducible acrylic-modified alkyd resin - Characterization - RESULTS AND DISCUSSION : Resin - Coating - Table 1 : The recipe for acrylic modification of alkyd resin - Table 2 : The properties of synthesized acrylic-modified alkyd resins, VTMS % (wt.) in acrylic monomer composition - Table 3 : Mechanical properties of coatings applied on the CRS surfaces - Table 4 : Adhesion results of all panels after exposure to humidity DOI : https://doi.org/10.1007/s11998-023-00795-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00795-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40177 [article]

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