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Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures / P. V. Vijay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures Type de document : texte imprimé Auteurs : P. V. Vijay, Auteur ; Piyush R. Soti, Auteur ; Derrick A. Banerjee, Auteur ; Konstantinos A. Sierros, Auteur Année de publication : 2020 Article en page(s) : p. 401-411 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Essais de résilience
Matériaux céramiques
Mouillabilité
Mouillage (chimie des surfaces)
Polyéthylène haute densité
Profilométrie
Résistance à l'abrasion
Résistance à l'usure
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : There is an increased demand for abrasive wear-resistant coatings that add durability to steel hydraulic structures, particularly for those subjected to flowing water with debris and alternate wet/dry cycles. These coating systems provide not only corrosion and chemical resistance, but also good erosion and abrasion resistance to the metallic surfaces, which are constantly exposed to flowing water containing sand particles and debris. Generally, vinyl-based coatings are used on hydraulic steel structures to protect them from corrosion and abrasion. However, due to the existence of high water force and debris, the coating is abraded at a faster rate leading to significant maintenance and repair costs. In this study, abrasive wear resistance of conventional vinyl-based coating systems currently used on lock and dam steel structures by U.S. Army Corps of Engineers has been compared with polymer matrix composite coatings, fibrous polymer coatings, and ultrahigh molecular weight polyethylene (UHMWPE). Six coating systems were evaluated through two-body abrasion tests using a reciprocating abrader under dry and wet conditions. Furthermore, wettability of the coating systems and its effect on the wear rate under the presence of water was studied. In addition, scanning electron microscopy of the wear tracks on different coatings was conducted to study and identify their failure mechanisms. Based on the results, UHMWPE and polymer–ceramic composite coatings were found to perform significantly better than the conventional vinyl-based coatings. Note de contenu : - EXPERIMENTAL DETAILS : Coating systems - Surface preparation for application of coatings - Wear tests - Surface wettability
- RESULTS AND DISCUSSION : Depth and volume of coating abrasion - Rate of abrasive wear - Effect of surface wettability - Wear mechanisms and failure of coatings - Field implementation and inspection of coatingsDOI : https://doi.org/10.1007/s11998-019-00286-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00286-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33991
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Advances in the science and technology of paints, inks and related coatings : 2006 / I. Holme in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B4 (12/2006)
[article]
Titre : Advances in the science and technology of paints, inks and related coatings : 2006 Type de document : texte imprimé Auteurs : I. Holme, Auteur Année de publication : 2006 Article en page(s) : p. 343-363 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Abrasion
Adhésion
Anticorrosifs
Anticorrosion
Couches minces
Démoulage
Désencrage
Disperseurs
Encre
Huiles et graisses
Imagerie (technique)
Imagerie numérique
Latex
Matériaux hybrides
Matériaux intelligents
Matériel optique
Nanoparticules
Particules (matières) -- Analyse
Photographie
Pigments azoïques
Polyalkydes
Polymères ramifiés
Polymérisation par transfert de chaîne réversible par addition fragmentationLa polymérisation radicalaire contrôlée par transfert de chaîne réversible par addition-fragmentation (en anglais Reversible Addition-Fragmentation Chain Transfer (RAFT)) est une technique de polymérisation radicalaire contrôlée.
Au même titre que la polymérisation radicalaire contrôlée par transfert d'atome (en anglais Atom Transfert Radical Polymerization (ATRP)) et la polymérisation radicalaire en présence de nitroxydes (en anglais Nitroxide Mediated Polymerization (NMP)), la polymérisation de type RAFT permet de synthétiser des polymères d'architecture contrôlée (polymères à blocs, étoiles, peignes, etc) de faible polydispersité et de haute fonctionnalité. Les applications de ces polymères sont, parmi d'autres, l'encapsulation de principes actifs de médicaments, la production de revêtements et peintures de nouvelles génération, la microfluidique, les tensioactifs, les adhésifs et les membranes.
Poudres
Rayures
Réaction de couplage
Résistance à l'abrasion
Résistance à l'usure
Résistance aux conditions climatiques
Revêtements organiques
Revêtements protecteurs
Revêtements:Peinture
Surfaces -- Analyse
Technique des plasmas
ThermodurcissablesIndex. décimale : 667.9 Revêtements et enduits Résumé : This review summarises the many developments reported in Surface Coatings International Part B: Coatings Transactions, 89, 2006. Thus the advances in polymer synthesis and characterisation and synthetic latexes for use in coatings are reviewed. Developments in RAFT agents, hyperbranched polymers, and coupling agents for adhesion are discussed. Novel hybrid, smart, anticorrosive, optical thin-film and powder coatings are surveyed, and developments in the oxidative and UV curing of paints and coatings described. Adaptive speckle imaging interferometry, a new technique for characterising the curing of coatings, and an ultrathin film high-shear disperser used to produce nanoparticles are discussed. Studies on plasma treatments, weatherability, and scratch and mar resistance of coatings are reviewed. Developments in printing inks, printability and deinking technology are surveyed. The colour and constitution relationships in azonaphtharylamide pigments are discussed. The latest developments in digital image capture and film-less camera technology and techniques are summarised. Note de contenu : - Polymer blend formulation
- Smart coatings
- Optical thin films
- Nanostructured and hollow polyurethand dispersions
- Polyurethane coatings
- Polymer architecture
- Hyperbranched polymers
- Heat-resistant coatings
- RAFT agents for controlled polymerisation
- Synthetic latexes
- Care refinish applications
- Scratch resistance of UV-cured acrylic clear coats
- Cross-linking density in polyurea coating
- UV-initiated photopolymerisation
- Powder coating
- Hybrid polymer coatings
- Mould release agents
- Anticorrosive coatings for steel
- Curing of fatty acids
- Mass/volume changes in the drying of linseed oil
- Catalysts for alkyd resins
- New technology for analysis of the drying of coatings
- Oil-a and water-repellency
- Adhesion of polymer-metal laminates
- Coupling agents to improve adhesion of paint to wood
- Moisture diffusion through wood-aluminium windows
- Numerical simulaton of nanoparticle formation in an ultrathin film high shear disperser
- Surface analysis of particles
- Pigment solubility in a polycarbonate-polybutylene terephthalate blend
- Azonaphtharylamide pigments
- Service life prediction of colour retention in PVDF architectural coatings
- Weatherability prediction using a remote plasma reactor
- Printability of polypropylene film treated by an air dielectric barrier discharge plasma
- The effect of process ink film thickness of the colour gamut of overprint colours
- Deinking of indigo prints
- Digital image capture technologyDOI : 10.1007/BF02765587 En ligne : https://link.springer.com/content/pdf/10.1007/BF02765587.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5276
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Code-barres Cote Support Localisation Section Disponibilité 006010 - Périodique Bibliothèque principale Documentaires Disponible Development of a technical approach to modify the internal surface of biomedical tubes and other elongated small lumen macrodevices with parylene coating / Chintan Desai in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
[article]
Titre : Development of a technical approach to modify the internal surface of biomedical tubes and other elongated small lumen macrodevices with parylene coating Type de document : texte imprimé Auteurs : Chintan Desai, Auteur ; Norbert Laube, Auteur Année de publication : 2019 Article en page(s) : p. 103-111 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coefficient de friction
Dépôt chimique en phase vapeur
Diffusion (physique)
Gaz
Matériel médical
ParylèneLe parylène est un film polymère biocompatible qui se dépose sous vide après évaporation et transformation de son précurseur. Cet article passe en revue la structure du motif du polymère qui constitue le parylène et qui explique comment son procédé de mise en œuvre unique est possible. Les propriétés de conformité et d'uniformité, d'isolation électrique et de barrière chimique, découlant de sa structure et de son procédé de mise en œuvre sont présentées. Ses propriétés optiques et de surface sont aussi exposées ainsi que les différents types de parylène. En effet, en modifiant le motif du polymère de parylène, les propriétés macroscopiques du revêtement s'en trouveront changées.
Polymères en médecine
Résistance à l'usure
Revêtements intérieurs
TubesIndex. décimale : 667.9 Revêtements et enduits Résumé : A multitude of differently composed biomedical polymers has been researched for many years for their distinctive ease of production and wide range of applications. New technologies and new material characteristics have always evolved accordingly. The lumina of biomedical polymer tubes such as catheters, intravenous tubes, and biomedical microfluidic channels do not necessarily show the required biocompatibility and desired functionality. In such cases, the products are provided with additional inner liner or coatings to achieve the desired specific properties. Specific adjustments, for example, low friction coefficient, low gas diffusion resistance, wear resistance, and hydrophobicity, are key properties which are in focus for the improvement of biomedical surfaces. In this pilot study, a technical method was developed to deposit parylene-AF4 on the inner surface of silicone tubes with aspect ratios exceeding 78:1. Uncoated and parylene-AF4-coated silicone tubes were investigated in respect to the aforementioned physical properties. Compared to the uncoated tubes, the parylene-coated tubes showed superior quality with respect to friction coefficient, gas diffusivity as well as wear resistance. It could be demonstrated that the new technical approach is suitable to parylene-coat the inner surfaces of tubes with high aspect ratios thereby achieving conformal coatings. Note de contenu : - MATERIALS AND METHODS : Experimental setup - Water contact angle measurements - EDX analysis - Determination of friction properties - Determination of diffusion properties - Determination of wear resistance
- RESULTS : Water contact angle measurements - EDX analysis - Friction properties - Determination of diffusion properties - Wear resistanceDOI : 10.1007/s11998-018-0104-1 En ligne : https://link.springer.com/article/10.1007/s11998-018-0104-1 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31969
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Code-barres Cote Support Localisation Section Disponibilité 20659 - Périodique Bibliothèque principale Documentaires Disponible Effect on wear resistance of nanoparticles addition to a powder polyester coating through ball milling / Maria Fernandez-Alvarez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 4 (07/2018)
[article]
Titre : Effect on wear resistance of nanoparticles addition to a powder polyester coating through ball milling Type de document : texte imprimé Auteurs : Maria Fernandez-Alvarez, Auteur ; Francisco Velasco, Auteur ; Asuncion Bautista, Auteur Année de publication : 2018 Article en page(s) : p. 771-779 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Fragmentation
Nanoparticules
Polyesters
Résistance à l'usure
Revêtement poudre -- Additifs:Peinture poudre -- Additifs
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
ThermodurcissablesIndex. décimale : 667.9 Revêtements et enduits Résumé : The wear properties of a textured polyester powder coating with pyrogenic silica nanoparticles addition were evaluated. Raw powders of a commercial, textured polyester organic coating were mixed with low amounts of SiO2 nanoparticles (0.5–3 wt%) using ball milling, a simple and economical method. Nanoparticles were mixed into the powder of thermoset organic coating for 10 min in a two-body planetary ball mill. Particle size distribution of the powder was measured to evaluate the milling effect. The coatings were applied and cured in an industrial installation on aluminum substrates. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) images of the coatings were taken to analyze the homogeneity of the organic coating. Roughness, gloss and color were measured in order to evaluate their appearance. The effect of nanoparticles on abrasive and erosion wear performances was measured. Pin-on-disk wear tests were carried out. Erosion measurements were performed with free fall of sand on the samples, a test based on ASTM D968 standard. The results showed that the milling process provides a good distribution of nanoparticles as no agglomerates were found. The addition of 0.5 wt% silica nanoparticles allows for improvement of the wear resistance of the coatings. DOI : 10.1007/s11998-018-0106-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0106-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30855
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Code-barres Cote Support Localisation Section Disponibilité 20078 - Périodique Bibliothèque principale Documentaires Disponible Enhanced wear resistance of epoxy coatings on steel using graphene oxide / Amanda B. Filizzola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
[article]
Titre : Enhanced wear resistance of epoxy coatings on steel using graphene oxide Type de document : texte imprimé Auteurs : Amanda B. Filizzola, Auteur ; Joao L. N. Pereira, Auteur ; Pollyanna R. dos Santos, Auteur ; Felipe da S. Medeiros, Auteur ; Sthéfany Z. S. do Amparo, Auteur ; Claudia K. B. de Vasconcelos, Auteur ; Glaura G. Silva, Auteur Année de publication : 2024 Article en page(s) : p. 215-228 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Abrasion
AcierL'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Epoxydes
Flexion (mécanique)
Métaux -- Revêtements
Mouillabilité
Oxyde de graphène
Résistance à l'usure
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Graphene oxide (GO) addition to epoxy can improve various properties provided that the GO features, dispersion and interaction with epoxy are optimized. Herein, the challenge of improving the hydrophobicity, flexural behavior and wear resistance of an epoxy coating on steel substrate was addressed by GO incorporation. Three GO concentrations were tested in the epoxy system (0.1, 0.25, and 0.50% m/m), and nanocomposites were prepared via roller mill. An increase in the thermal stability of the pure epoxy by 23°C was observed for the nanocomposites as a function of GO incorporation. XPS analyses were carried out to study the interaction between DGEBA and GO, and the results show that a covalent link was formed between GO and epoxy. The wettability test showed an increase of 26° in the contact angle while the behavior of the system from mechanical bending tests showed gains of 52% in the energy to fracture for the sample containing 0.5 wt.% GO with respect to the neat epoxy. The wear of the coatings showed a 31% decrease in the wear coefficient of the nanocomposite compared to the reference. The set of results reported in the present work pointed to the epoxy/GO coating as promising in terms of hydrophobicity and wear properties. Note de contenu : - Chemicals and reagents
- Synthesis of GO
- Nanocomposite coating preparation and application on the substrate - Characterization
- Table 1 : Chemical composition (wt.%) of the steel substrate
- Table 2 : Elementary analysis for the GO sample
- Table 3 : Glass transition temperature and percentage of cure of the samples under study obtained by DSC in triplicate
- Table 4 :- Binding energy and percentage of the components from C1s, O1s and N1s XPS spectra for epoxy and epoxy-GO samplesDOI : https://doi.org/10.1007/s11998-023-00811-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00811-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40442
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