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Preparation and properties of UV-cured epoxy acrylate/glycidyl-POSS coatings / Ying Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 3 (05/2017)
[article]
Titre : Preparation and properties of UV-cured epoxy acrylate/glycidyl-POSS coatings Type de document : texte imprimé Auteurs : Ying Wang, Auteur ; Fengguo Liu, Auteur ; Xiangxin Xue, Auteur Année de publication : 2017 Article en page(s) : p. 665-672 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère époxy acrylate
Matériaux hybrides
Photoréticulation
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet
Silsesquioxanes oligomères polyhèdres
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy acrylate (EA)/glycidyl-polyhedral oligomeric silsesquioxane (G-POSS) nanocomposites were synthesized via in situ ultraviolet initiated polymerization. XRD analysis indicates that G-POSS and EA are miscible and can form uniform composites. SEM micrographs show that the G-POSS particles (<500 nm in diameter) disperse uniformly in the polymer matrix. The EA/G-POSS nanocomposites exhibit heterogeneous morphology. FTIR analysis confirms the curing reaction is quite complete, and there are no chemical reactions between G-POSS and EA during the UV-curing process. The carbon–carbon double-bond conversion vs time profiles confirm that the addition of G-POSS improves the UV-curing rates of nanocomposites. The glass transition temperature (Tg) of nanocomposites were obtained by DMA. Tg reaches to the maximum at the loading of 1 wt% and then decreases with the increasing G-POSS loadings. The thermal stability, impact resistance, and flexibility of nanocomposites are all enhanced by the incorporation of G-POSS. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Characterizations
- RESULTS AND DISCUSSION : XRD analysis - Morphological analysis - FTIR - UV-curing process - Dynamic mechanical properties (DMA) - Thermal gravimetric analysis (TGA) - Mechanical propertiesDOI : 10.1007/s11998-016-9886-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9886-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28574
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 3 (05/2017) . - p. 665-672[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18899 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and characterization of UV-curing epoxy acrylate coatings modified with organically modified rectorite / Ying Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
[article]
Titre : Synthesis and characterization of UV-curing epoxy acrylate coatings modified with organically modified rectorite Type de document : texte imprimé Auteurs : Ying Wang, Auteur ; Zhichao Cao, Auteur ; Fengguo Liu, Auteur ; Xiangxin Xue, Auteur Année de publication : 2017 Article en page(s) : p. 107-115 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse mécanique dynamique
Copolymère époxy acrylate
Matériaux hybrides -- Propriétés mécaniques
Morphologie (matériaux)
RectoriteLa Rectorite (ou "papier de montagne" ou "allevardite") est un minéral des argiles.
C’est un monoclinique constitué d’une interstratification régulière de deux phyllosilicates : le mica et la smectite
Formule chimique : (Na,Ca)Al4(Si,Al)8O20(OH)4 • 2 H2O
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet
ThermogravimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy acrylate (EA) coatings modified with organically modified rectorite (OREC) were synthesized employing the ultraviolet-curing technique. Two kinds of alkyl ammonium ions, octadecyltrimethylammonium chloride (OTAC) and [2-(methacryloyloxy)ethyl]trimethylammonium chloride (MAOTMA), were used to modify rectorite (REC). The methacrylate functionalities of MAOTMA were capable of reacting with the acrylate groups of EA. The structure of OREC was characterized by FTIR and XRD and the results indicated that the surfactants were successfully intercalated into the REC interlayers via cation exchange process. The morphology of nanocomposites was investigated by SEM and TEM. OREC showed better dispersion in EA matrix compared with unmodified REC. The Tg of neat EA obtained by DMA was 75.6°C, while for 5 wt% EA/MAOTMA-REC and EA/OTAC-REC nanocomposites it increased to 76.5 and 80.8°C, respectively. The nanocomposite with 3 wt% loading of OTAC-REC had the highest Tg (89.7°C). TGA revealed that the thermal stability of nanocomposites was enhanced by OTAC-REC and MAOTMA-REC and the thermal stability of EA/MAOTMA-REC nanocomposites was better than that of EA/OTAC-REC nanocomposites. The mechanical properties of nanocomposites containing OTAC-REC and MAOTMA-REC were better than those of nanocomposites containing unmodified REC. With increasing OREC content, the adhesive force of nanocomposites decreased slightly and the flexibility increased significantly. Note de contenu : - EXPERIMENTAL : Materials - Clay modification - Preparation of nanocomposite coatings - Characterizations
- RESULTS AND DISCUSSION : Modification of the rectorite - Morphological analysis - Dynamic mechanical analysis (DMA) - Thermal gravimetric analysis (TGA) - Mechanical propertiesDOI : 10.1007/s11998-016-9832-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9832-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27793
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 1 (01/2017) . - p. 107-115[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18674 - Périodique Bibliothèque principale Documentaires Disponible