Synthesis and characterization of organosilicon-modified self-matting waterborne polyurethane with excellent wear resistance / Pengfei Niu 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. 1963-1976 Titre : Synthesis and characterization of organosilicon-modified self-matting waterborne polyurethane with excellent wear resistance Type de document : texte imprimé Auteurs : Pengfei Niu, Auteur ; Weichen Pan, Auteur ; Wei Wang, Auteur ; Meng Wang, Auteur ; Bao Zhang, Auteur ; Junfeng Yang, Auteur ; Xiaohong Peng, Auteur Année de publication : 2023 Article en page(s) : p. 1963-1976 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse morphologique Caractérisation Matériaux auto-mattants Polymères -- Synthèse Polymères en émulsion Polyuréthanes Résistance à l'usure Index. décimale : 667.9 Revêtements et enduits Résumé : Self-matting waterborne polyurethane (WPU) with a rough surface suffers from poor wear resistance, which inevitably hinders its service span. Here, wear-resistant and self-matting WPU resin was prepared via using hydroxypropyl-terminated polydimethylsiloxane (PDMS) in the preparation of prepolymer and N-2-aminoethyl-3-aminopropyltrimethoxysilane (KH-792) as a post-chain extender. The effects of PDMS, 2, 2-Bis(hydroxymethyl)propionic acid (DMPA), and KH-792 on its morphology, particle size, gloss, wear resistance, and hydrophilicity of WPU were also investigated. The gloss of WPU coatings was found to be negatively correlated with the amount of DMPA. Moreover, the matting effect and the wear resistance of WPU were significantly enhanced by the introduction of PDMS and KH-792. When the content of PDMS, DMPA, and KH-792 was 6 wt%, 2.2 wt%, and 40 mol% respectively, the gloss was 3.2 GU, and the wear mass loss was only 6.6 mg, which was 64% lower than that without silicone-modified. This work could provide a new idea for the preparation of wear-resistant and self-matting coatings. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of silicone-modified self-matting WPU - Characterization - RESULTS AND DISCUSSION : FTIR characterization - NMR characterization - Effect of the DMPA content - Effect of the KH-792 content - SEM analysis - 3D morphology characterization DOI : https://doi.org/10.1007/s11998-023-00790-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00790-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40174 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
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