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Effect of filler content on scratch behavior and tribological performance of polyester/graphene oxide nanocomposite coating / Nedia Gafsi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
[article]
Titre : Effect of filler content on scratch behavior and tribological performance of polyester/graphene oxide nanocomposite coating Type de document : texte imprimé Auteurs : Nedia Gafsi, Auteur ; Raquel Verdejo, Auteur ; Mohamed Kharrat, Auteur ; Massimiliano Barletta, Auteur ; Miguel Ángel López-Manchado, Auteur ; Maher Dammak, Auteur Année de publication : 2021 Article en page(s) : p. 1269-1280 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Charges (matériaux)
Enrobage (technologie)
Essais de résilience
Frottements (mécanique)
Matériaux hybrides
Polyesters
Rayures
Revêtements organiques
Tribologie (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : The influence of 0.5, 0.75, and 1 wt.% of graphene oxide (GrO) in nanocomposite coating on scratch behavior and tribological performance was analyzed. Graphite was oxidized using the Marcano and Tour method to obtain graphite oxide, which is thermally exfoliated at 700°C getting graphene oxide. The transformation of graphite to graphene oxide was evaluated via Raman spectroscopy and X-ray diffraction. Effects of graphene oxide content on the friction and wear behavior of polyester composite coatings were evaluated under dry sliding conditions. Experimental findings showed that the addition of 0.5 wt.% GrO was effective in reducing the friction coefficient of polyester coating. Meanwhile, under the same sliding conditions, the wear results revealed that the polyester coating filled with 1 wt.% GrO has better antiwear ability compared to those filled with 0.5 and 0.75 wt.% GrO. From the scratch analyses, we deduced that coating scratch behavior was highly affected by the amount of fillers inside the polyester matrix. In fact, the best friction characteristic and scratch resistance were observed in the case of polyester coatings filled with the lower amount of GrO, namely 0.5 wt.%. Note de contenu : - EXPERIMENTAL DETAILS : Materials - The synthesizing process of graphene oxide - Physico-chemical characterization methods for matrix and fillers - Tribological and scratch characterization - Methodologies
- RESULTS AND DISCUSSION : Fillers characterization - Tribological behavior - Scratch test analysis
- Table 1 : Chemical composition and the mechanical properties of aluminum alloyTable 2 Residual depth and scratch hardness versus fillers content for polyester/GrO nanocomposite coatings
- Table 2 : Residual depth and scratch hardness versus fillers content for polyester/GrO nanocomposite coatingsDOI : https://doi.org/10.1007/s11998-021-00489-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00489-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36431
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Code-barres Cote Support Localisation Section Disponibilité 22991 - Périodique Bibliothèque principale Documentaires Disponible Effect of particle shape on the wear and friction behavior of particle-reinforced epoxy coatings / Kenan Cinar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)
[article]
Titre : Effect of particle shape on the wear and friction behavior of particle-reinforced epoxy coatings Type de document : texte imprimé Auteurs : Kenan Cinar, Auteur ; S. Ozmen Eruslu, Auteur ; I. Savas Dalmis, Auteur ; Ibrahim Guven, Auteur Année de publication : 2019 Article en page(s) : p. 1435-1445 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites
Epoxydes
Formes des particules
Frottements (mécanique)
Particules (matières)
Polymères -- Détérioration
Revêtements organiques
Tomographie à rayons XIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy coatings are increasingly becoming popular choices as barriers against acids and alkali for protection of concrete and metal products. In applications, metal containers are often coated with epoxy-based coatings to prevent rusting and corrosion. In this study, an experimental examination was carried out to investigate the effect of particle shape and size on the friction and wear behavior of epoxy coatings. Friction and wear experiments were conducted using a pin-on-disk tribometer. Epoxy resin was filled with four different shapes of glass particles (spherical, flake, rod, and irregular shape) and varying particle sizes. Fillers were settled down and filler surface area fraction through thickness was characterized using microcomputed tomography (micro-CT). The wear mechanisms such as matrix wear, matrix cracking, particle fracture, particle debonding, and pullout and debris formation were studied using scanning electron microscopy. According to observations, it was found that particle shape has an effect on the wear characteristic. Particle fracture and particle pullout mainly dominated the wear in the samples of flake- and rod-shaped fillers, perpendicular matrix cracks occurred in the samples of spherical fillers, large debonding at the particle–matrix interface without particle pullout occurred in the samples of large irregular-shaped fillers (75–150 µm), and matrix cracks dominated the wear as the size of irregular-shaped fillers decreased to 50–75 µm. Further, it was found that friction coefficient depends on the shape of the particle. The samples with spherical- and irregular-shaped fillers had higher friction coefficient as compared to the samples with flake and rod fillers. Note de contenu : - MATERIALS AND EXPERIMENTAL PROCEDURES : Materials and manufacturing - Microcomputed tomography imaging - Wear and friction tests
- RESULTS AND DISCUSSION : Coefficient of friction - Weight loss - Wear mechanisms and morphology of the worn surfacesDOI : 10.1007/s11998-019-00228-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00228-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33023
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Code-barres Cote Support Localisation Section Disponibilité 21154 - Périodique Bibliothèque principale Documentaires Disponible Effect of siloxane functionalized caprolactone polyols on photocurable epoxy coatings / Shoabing Wu in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 887 (12/1998)
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Titre : Effect of siloxane functionalized caprolactone polyols on photocurable epoxy coatings Type de document : texte imprimé Auteurs : Shoabing Wu, Auteur ; Mark D. Soucek, Auteur Année de publication : 1998 Article en page(s) : p. 53-62 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces
Dureté (matériaux)
Epoxydes
Formulation (Génie chimique)
Frottements (mécanique)
Poly-e-caprolactone
Résistance au chocs
Réticulation (polymérisation)
Revêtements
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
SiloxanesLes siloxanes sont une classe de composés du silicium dont la formule empirique est R2SiO, où R est un groupe radical qui peut être organique. Des exemples représentatifs sont [SiO(CH3)2]n (diméthylsiloxane) et [SiO(C6H5)2]n (diphénylsiloxane), où n est typiquement supérieur à 4. Ces composés peuvent être des hybrides organiques et inorganiques. Les chaînes organiques confèrent au composé des propriétés hydrophobes alors que la chaîne principale -Si-O-Si-O- est purement inorganique.
Le mot siloxane est dérivé de Silicium, Oxygène et alkane.
Des siloxanes peuvent être trouvés dans des produits tels que des cosmétiques, des déodorants, des enduits hydrophobes pour pare-brise, des peintures et certains savons.
Les siloxanes polymérisés (polysiloxanes) sont appelés silicones1,2.
Le siloxane est massivement utilisé dans l'industrie cosmétique (rouges à lèvre, conditionneurs et shampooings, déodorants, etc.).
Une application récente du Siloxane D5 (2001) a été trouvée dans le nettoyage à sec des textiles en remplacement du perchloroéthylène. Ce procédé est très répandu aux États-Unis et au Royaume-Uni. Il devient de plus en plus courant en Europe continentale dont la France, afin de promouvoir l'usage de procédés écologiques et respectueux de la santé humaine.Index. décimale : 667.9 Revêtements et enduits Résumé : Cationic ultraviolet (UV) coatings were formulated using a cycloaliphatic diepoxide (3,4-epoxycyclohexyl methyl-3',4'-epoxycyclohexane carboxylate) with siloxane modified caprolactone polyols. Both di- and tri-TEOS (tetraethyl orthosilicate) functionalized caprolactone polyols were used to modify the UV coatings. The resulting coatings were cured and evaluated in terms of pencil hardness, MEK double rubs, crosshatch/pull-off adhesion, and reverse impact resistance. Addition of the siloxane-functionalized polyols into the caprolactone polyol/cycloaliphatic diepoxide coating formulations improved pencil hardness, MEK double rubs, and enhanced toughness of the coatings. When the addition of siloxane-functionalized polyols was less than 25 wt%, the resulting coatings had significantly increased adhesion. In addition, modification of the coatings with the siloxane-functionalize polyols also reduced surface tension and improved film formation with reduced levels ofsurface wetting agent. Without the modification, the coatings exhibited a poor balance of hardness and adhesion. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18055
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Code-barres Cote Support Localisation Section Disponibilité 003556 - Périodique Bibliothèque principale Documentaires Disponible Effect of the rubbing force on dry rubbing fastness with various white cloths / Keiko Suganuma in COLORATION TECHNOLOGY, Vol. 129, N° 6 (12/2013)
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Titre : Effect of the rubbing force on dry rubbing fastness with various white cloths Type de document : texte imprimé Auteurs : Keiko Suganuma, Auteur Année de publication : 2013 Article en page(s) : p. 443-447 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Evaluation
Frottements (mécanique)
Solidité de la couleur
Textiles et tissus
Transfert de colorantsTags : 'Tissus teints' blancs' 'Frottements secs' 'Transfert de colorants' 'Force frottement' Index. décimale : 667.3 Teinture et impression des tissus Résumé : The rubbing-off of dye from fabrics was investigated from a kinetic viewpoint using various white cloths under weights of 2–6 N. The natural logarithm of the rate constant of dye transfer from dyed fabric to white cloths and that of the equilibrium constant were linearly related to the reciprocal of the rubbing force, which was given by the product of the weight and the friction coefficient between the dyed fabric and white cloth. Two straight lines were obtained, in spite of the variety of white cloths used, and they converged in the low rubbing force range. The results show that the dry rubbing fastness with various white cloths is primarily influenced by the friction coefficient and rubbing force rather than by the types of textile fibre or fabric. Note de contenu : - EXPERIMENTAL : Sample of dyed fabric - Samples of white cloth - Measurement of friction coefficient - Rubbing test - Determination of the amount of dye transferred to white cloths
- RESULTS AND DISCUSSION : Friction coefficient - Amount of dye transferred to white cloth - A measure of rubbing fastness - Rate constant and equilibrium constantDOI : 10.1111/cote.12053 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12053/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19750
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Code-barres Cote Support Localisation Section Disponibilité 15730 - Périodique Bibliothèque principale Documentaires Disponible Effects of atmospheric pressure plasma treatments on various properties of leathers / Safiye Meric Acikel in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 7 (07/2013)
[article]
Titre : Effects of atmospheric pressure plasma treatments on various properties of leathers Type de document : texte imprimé Auteurs : Safiye Meric Acikel ; Ahmet Aslan ; Lufti Oksuz ; Taner Aktan Année de publication : 2013 Article en page(s) : p. 266-276 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale
Argon
Colorants acides
Colorimétrie
Complexes métalliques
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Teinture
Déchirure (mécanique)
Frottements (mécanique)
Hydrophilie
Plasma à pression atmosphériqueUn plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère.
Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse.
Traction (mécanique)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Chrome tanned crust leathers were treated with atmospheric pressure plasma with argon flows at different times. The leather was then dyed with acid and metal complex dyes. The dyestuff concentration in the exhausted dye bath, CIE lab color analysis, hydrophilicity, FTIR spectra and SEM images were compared for 0, 2.1, 4.2 and 6.4 sec/cm2 durations of plasma. In addition, various physical properties such as rubbing fastness, tear loading and tensile strength were also examined to see the effects of increased duration of the plasma process. The presence of ions that appeared during this process in an atmospheric environment was determined by OES. The best results were obtained from leather subjected to 6.4 sec/cm2 of argon gas atmospheric pressure plasma. Note de contenu : - MATERIALS
- METHODS : Leather processing - Experimental set up - The dyeing process - Optical emission spectrometer analysis - FTIR measurements - Hydrophilicity measurements - Dyestuff concentration in the exhausted dye bath - CIE L* a* b* color measurement - Rubbing fastness - Tensile strength and tear load tests - Scanning electron microscope study
- RESULTS AND DISCUSSION : Optical emission spectrometer - FTIR - Hydrophilicity - Dyestuff concentration in the exhausted dye bath - CIE L* A* B* color - Rubbing fastness - Tensile strength and tear loas assessment - SEM photographsEn ligne : https://drive.google.com/file/d/1AIzopPZI4YDw6suYQBO90r0nL1_e2Lp8/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19011
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Code-barres Cote Support Localisation Section Disponibilité 15337 - Périodique Bibliothèque principale Documentaires Disponible Effects of biofouling development on drag forces of hull coatings for ocean-going ships : a review / A. Lindholdt in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)
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