Synthesis of xylitol-based hyperbranched polyurethane acrylate and its application in self-matting acrylate coatings / Ruijun Lin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1579-1594 Titre : Synthesis of xylitol-based hyperbranched polyurethane acrylate and its application in self-matting acrylate coatings Type de document : texte imprimé Auteurs : Ruijun Lin, Auteur ; Xingshan Yin, Auteur ; Huameng Liu, Auteur ; Lijing Chen, Auteur ; Jianxin Wu, Auteur ; Liang Liu, Auteur ; Yuxin Gu, Auteur ; Yong Li, Auteur ; Xiaofeng Lin, Auteur ; Wenjing Lin, Auteur ; Guobin Yi, Auteur Année de publication : 2023 Article en page(s) : p. 1579-1594 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agent mattant Caractérisation Copolymère uréthane acrylate Copolymères -- Synthèse Formulation (Génie chimique) Polyacryliques Polymères ramifiés Potentiel zeta Revêtements -- Propriétés mécaniques Revêtements en phase aqueuse Stabilité thermique Taille des particules Xylitol Index. décimale : 667.9 Revêtements et enduits Résumé : Self-matting acrylate has attracted much interest due to excellent weather resistance, hardness, water resistance, and chemical resistance. However, the poor mechanical properties of acrylate limit its application in coatings. To overcome this problem, a series of self-matting acrylate emulsions (SMAE) modified by xylitol-based hyperbranched urethane acrylate (HP-IH) were successfully synthesized. The results revealed that the amount of emulsifier was the primary factor affecting the gloss of the films. Upon the incorporation of HP-IH, the elongation at break and fracture energy of the SMAE films were significantly improved by 52.6% and 59.6%, respectively, due to the internal plastic effect and increased crosslink density induced by HP-IH. The S-2-1.5 sample exhibited the excellent comprehensive performance, i.e., tensile strength of 12.7 MPa, elongation at break of 952%, fracture energy of 71.1 MJ/m3, adhesion of 5B, temperature of 5% weight loss at 350 °C, and gloss at 60° of 14.8, respectively, indicating its great application potential in the field of low-gloss coatings. Note de contenu : - MATERIALS : Synthesis of hydroxyl-terminated hyperbranched polyester (HP-OH) - Synthesis of xylitol-based hyperbranched urethane acrylate (HP-IH) - Synthesis of self-matting acrylate emulsion (SMAE) - Preparation of self-matting acrylate films - Characterization - RESULTS AND DISCUSSION : Chemical structural characterization - Table 1 : Basic formulations for the preparation of self-matting acrylate emulsion - Table 2 : Average particle size and zeta potential of SMAE with different amounts of HP-IH - Table 3 : Thermal stabilities of the SMAE films - Table 4 : Dynamic mechanical properties of the SMAE films - Table 5 : Comprehensive properties of SMAE DOI : https://doi.org/10.1007/s11998-023-00764-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00764-9.pdf?pdf=button Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39973 [article]

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