Facile fabrication of durable superhydrophobic SiO2/polyacrylate composite coatings with low nanoparticle filling / Yanfen Huang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1289-1295 Titre : Facile fabrication of durable superhydrophobic SiO2/polyacrylate composite coatings with low nanoparticle filling Type de document : texte imprimé Auteurs : Yanfen Huang, Auteur ; Bin Chen, Auteur ; Zaosheng Lv, Auteur ; Fen Guo, Auteur Année de publication : 2020 Article en page(s) : p. 1289-1295 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Caractérisation Copolymères -- Synthèse Copolymères acrylates fluorés Dioxyde de silicium Fluoropolymères Hydrophobie Matériaux hybrides Nanoparticules Polyacrylates Revêtement auto-nettoyant Revêtements -- Propriétés mécaniques Revêtements organiques Stabilité thermique Index. décimale : 667.9 Revêtements et enduits Résumé : This study aimed to prepare superhydrophobic coatings that could be used for practical applications. Nanocomposites of polyacrylate containing silica nanoparticles were prepared by dispersing silica sol in a polyacrylate solution. Superhydrophobicity was attainable for nanocomposite coatings with a filler percentage of only 15 wt%. Reducing the loading of silica nanoparticles not only minimized the costs but also simplified the preparation. The superhydrophobic coatings with water contact angle as high as 155.4° and contact angle hysteresis of 5.6° exhibited good self-cleaning property. The superhydrophobic nanocomposite coatings also displayed good mechanical properties and excellent thermal stabilities that favor indoor and outdoor applications. The superhydrophobic nanocomposite coatings can be used on various substrate surfaces, including glass plates, polymethyl methacrylate plates, polycarbonate plates, and aluminum sheets. Given their large-scale and low-cost fabrication, superhydrophobic coatings show great promise in practical applications in a broad range of fields. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of fluorinated acrylate copolymers - Preparation of coatings - Characterization - RESULTS AND DISCUSSION : Hydrophobicity of the coatings - Surface morphological features of as-prepared coatings - Thermal stability properties of as-prepared coatings - Mechanical properties of as-prepared coatings DOI : https://doi.org/10.1007/s11998-020-00347-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00347-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34574 [article]

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Synthesis and application of fluorinated acrylate copolymer as a retanning agent / Jin Liqiang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 4 (07-08/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 4 (07-08/2006) . - p.159-163 Titre : Synthesis and application of fluorinated acrylate copolymer as a retanning agent Type de document : texte imprimé Auteurs : Jin Liqiang, Auteur ; Li Yanchun, Auteur ; Xu Qinghua, Auteur Année de publication : 2006 Article en page(s) : p.159-163 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Allongement à la rupture Caractérisation Copolymères -- Synthèse Copolymères acrylates fluorés Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Formulation (Génie chimique) Perméabilité Polyaddition Résistance à l'humidité:Résistance à l'eau Résistance à la traction Retannage Tannage synthétique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A fluorinated acrylate copolymer of dodecafluoroheptyl methacrylate (FA) and methacrylic acid (MAA) has been synthesized by free radical copolymerization using azobisisobutyronitrile as the catalyst at 75°C for 6hrs in dioxane. The structure of this copolymer was characterized by Fourier transformation infrared spectrum (FTIR), proton nuclear magnetic resonance (1H-NMR), elemental analysis, differential scanning calorimetry (DSC), and gel permeation chromatography (GPC). The characteristics and effects of the copolymer as a retanning material have been investigated by measuring such physical/mechanical indexes as the tensile strength, thickness increment ratio, elongation at break, static water resistance and air permeability Instrumental analysis such as scanning electron microscopy and X-ray energy spectrum (SEM-EDAX) was also employed. The results indicate that this fluorinated acrylate copolymer tanning agent has good filling cum retanning ability and can improve the treated leather’s physical/mechanical properties and water repellency. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of the copolymer - Characterization of the copolymer - APPLICATION FORMULATIONS : Determination of leather properties - RESULTS AND DISCUSSION : Synthesis of copolymer - Application results - Scanning electron microscopy and X-ray energy spectrum (SEM-EDAX) examination - Table 1 : The reaction conditions and results for preparing Poly (FA-co-MAA) - Table 2 : Retanning and fatliquoring formulation of blue goat shoe leather - Table 3 : The composition of Poly (FA-co-MAA) - Table 4 : Physical and mechanical properties of leather treated by fluorinated acrylic polymer - Table 5 : The elemental analysis results through SEM-EDAX En ligne : https://drive.google.com/file/d/1PHFsxXJ59Xvb2-q630r7ui_01idTr8aU/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39114 [article]

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