A comparative study on the effect of type of reinforcement on the scratch behavior of a polyacrylic-based nanocomposite coating / S. A. Sajjadi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 2 (03/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 2 (03/2013) . - p. 255-261 Titre : A comparative study on the effect of type of reinforcement on the scratch behavior of a polyacrylic-based nanocomposite coating Type de document : texte imprimé Auteurs : S. A. Sajjadi, Auteur ; M. H. Avazkonandeh-Gharavol, Auteur ; S. M. Zebarjad, Auteur ; M. Mohammadtaheri, Auteur ; M. Abbasi, Auteur ; K. Mossaddegh, Auteur Année de publication : 2013 Article en page(s) : p. 255-261 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Composites -- Propriétés mécaniques Dureté (matériaux) Essai Wolff-Wilborn Etudes comparatives Matériaux hybrides Polyacryliques Résistance à l'abrasion Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : In this article the effects of type of reinforcement on the scratch behavior of nanocomposite coatings are studied. Such coatings can be used in the automotive industry as clear top paint coats. Three types of reinforcements were used, including detonation nanodiamond, nondetonation nanodiamond, and nano-alumina, with an average particle size of 4–6, 50–60, and ~50 nm, respectively. Nanocomposites containing 1.5 and 3 wt% of each filler type in polyacrylic as matrix were produced by sonication. The macrostructure, microstructure, and scratch behavior of coatings were investigated and compared with those of neat polyacrylic polymer. The scratch behavior was evaluated based on the ASTM G171 standard and also by common industrial tests such as the pencil hardness test. The results revealed that the nano-alumina coatings showed the best, and the nondetonation nanodiamond coatings the worst, scratch resistance—even less than that of the neat polyacrylic polymer. Note de contenu : - Materials - Coating production - Coating characterization - Scratch test - Pencil hardness test DOI : 10.1007/s11998-012-9442-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9442-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18250 [article]

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Effect of mechanical milling on the thermal behavior of polyethylene reinforced with nano-sized alumina / Gh. Tadayyon in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 4 (09/2011)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 4 (09/2011) . - p. 354-360 Titre : Effect of mechanical milling on the thermal behavior of polyethylene reinforced with nano-sized alumina Type de document : texte imprimé Auteurs : Gh. Tadayyon, Auteur ; S. M. Zebarjad, Auteur ; S. A. Sajjadi, Auteur Année de publication : 2011 Article en page(s) : p. 354-360 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alumine Analyse thermique Composites Contraintes thermiques Fraisage Microscopie électronique à balayage Microscopie électronique en transmission Nanoparticules Polyéthylène moyenne densité Thermogravimétrie Index. décimale : 668.4 Plastiques, vinyles Résumé : In the current study the dependency of morphology and thermal behavior of medium density polyethylene (MDPE) powder reinforced with 0, 5, 10 and 15 wt.% nano-sized Al2O3 particles on mechanical milling were studied. The effects of milling time on the morphology and the thermal behavior were investigated by Transition Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Differential Scanning Calorimetery (DSC) and Thermo Gravimetric Analyzer (TGA). The TEM micrographs obtained from the nanocomposites proved that mechanical milling could be an adequate method to disperse nano-sized hard particles throughout the polymer. The SEM micrographs of pure MDPE showed that regular shape powder converted to the flake shapes as milling time increased. Also the results illustrated that an increase in milling time caused to decrease the agglomeration of alumina. The DSC profiles of samples elucidated that ball milling had little effect on crystalline temperature and melting point of all materials including MDPE and its nanocomposites. The nanocomposite exhibited more thermal stability than pure polyethylene proved by TGA tests. DOI : 10.3139/217.2338 En ligne : https://drive.google.com/file/d/1SktjPIwMAF1-JMu2UmK-KhbzPpiRh3SR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12432 [article]

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