Accueil
Détail de l'auteur
Auteur Hamad Al-Turaif |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Effect of TiO2 surface treatment on the mechanical properties of cured epoxy resin / Hamad Al-Turaif in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)
[article]
Titre : Effect of TiO2 surface treatment on the mechanical properties of cured epoxy resin Type de document : texte imprimé Auteurs : Hamad Al-Turaif, Auteur Année de publication : 2011 Article en page(s) : p. 727-733 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de titane
Epoxydes
Particules (matières)
Polymères -- Propriétés mécaniques
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Mechanical properties of epoxy resin toughened with two different submicron particles of TiO2 at different weight fractions (1, 3, and 5%, respectively) were investigated. The first TiO2 particles are surface treated with Al2O3–SiO2, and the second are surface treated with Al2O3–ZrO2. The composites were characterized by tensile, flexural, pull off and abrasion tests, followed by X-ray photoelectron spectroscopy and scanning electron spectroscopy of the fracture surfaces. A small amount of TiO2 (~1%) submicron particles improves the flexural, abrasion and pull-off strengths, while amounts up to 5% significantly enhance tensile properties only. TiO2 particles surface treated with Al2O3–ZrO2 produce an epoxy composite with higher strength and weight loss but lower pull off strength and more brittle than that prepared with Al2O3–SiO2 particles. The TiO2 particles surface treated with Al2O3–SiO2 have a higher adherence to the epoxy composite matrix than the particles treated with Al2O3–ZrO2 as shown by scanning electron spectroscopy. Note de contenu : - Materials
- Sample preparation
- X-ray photoelectron spectroscopy
- Tensile test
- Flexural test
- Abrasion test
- Pull-off test
- Scanning electron microscopyDOI : 10.1007/s11998-011-9351-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9351-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12599
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 6 (11/2011) . - p. 727-733[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 13484 - Périodique Bibliothèque principale Documentaires Disponible Relationship between surface chemistry and surface energy of different shape pigment blend coatings / Hamad Al-Turaif in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 1 (03/2008)
[article]
Titre : Relationship between surface chemistry and surface energy of different shape pigment blend coatings Type de document : texte imprimé Auteurs : Hamad Al-Turaif, Auteur Année de publication : 2008 Article en page(s) : p. 85-91 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile
Carbonate de calciumLe carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole.
C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots.
Chimie des surfaces
Energie de surface
Kaolin
Latex
Mélange
Pigments inorganiques
Terpolymère acrylonitrile butadiène styrèneIndex. décimale : 667.9 Revêtements et enduits Résumé : The influence of pigment shapes and pigment blends on the surface energy was investigated and compared with the surface chemistry of pigmented latex coatings. The coatings were made of different volume ratios of two pigments: plate-like kaolin clay pigment and prismatic precipitated calcium carbonate (PCC) pigment. These were mixed together with carboxylated styrene-butadiene-acrylonitrile latex (SBA), and applied over nonabsorbent substrates as well as absorbent substrates. The composition of the surface of the coatings was investigated by X-ray photoelectron spectroscopy (XPS). Two approaches were used to estimate the total surface energy and the components of the coatings: a conventional approach-"the Kaelble approach"-and a more modern approach-"the van Oss approach." Pigment blends with different shapes and increments caused a change in the surface chemistry and the surface energy of the latex coatings. As the prismatic PCC pigment particles increased in the kaolin/SBA coating system, the SBA latex content at the coating surface increased and the total surface energy of the coating decreased. This is valid for both nonabsorbent as well as absorbent substrates. It was found that there was a strong correlation between the surface energy and the surface composition. The surface energy of the coatings estimated by the Van Oss approach was always lower than that estimated by the Kaelble approach. Colloidal interactions between pigment-pigment and/or pigment-binder were thought to play an essential role in determining the final coating surface energy and its components. Changes in the surface latex content and the surface energy due to the different pigment blends investigated were found to fit straight-line equations. DOI : 10.1007/s11998-007-9031-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9031-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3618
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 1 (03/2008) . - p. 85-91[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 009979 - Périodique Bibliothèque principale Documentaires Disponible