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Anticorrosive coatings / P. A. Sorensen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Anticorrosive coatings : a review Type de document : texte imprimé Auteurs : P. A. Sorensen, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur ; Søren Kiil, Auteur Année de publication : 2009 Article en page(s) : p. 135-176 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Liants
PigmentsIndex. décimale : 667.9 Revêtements et enduits Résumé : The main objective of this review is to describe some of the important topics related to the use of marine and protective coatings for anticorrosive purposes. In this context, "protective" refers to coatings for containers, offshore constructions, wind turbines, storage tanks, bridges, rail cars, and petrochemical plants while "marine" refers to coatings for ballast tanks, cargo holds and cargo tanks, decks, and engine rooms on ships. The review aims at providing a thorough picture of state-of-the-art in anticorrosive coatings systems. International and national legislation aiming at reducing the emission of volatile organic compounds (VOCs) have caused significant changes in the anticorrosive coating industry. The requirement for new VOC-compliant coating technologies means that coating manufacturers can no longer rely on the extensive track record of their time-served products to convince consumers of their suitability for use. An important aspect in the development of new VOC-compliant, high-performance anticorrosive coating systems is a thorough knowledge of the components in anticorrosive coatings, their interactions, their advantages and limitations, as well as a detailed knowledge on the failure modes of anticorrosive coatings. This review, which mainly deals with European experience and practice, includes a description of the different environments an anticorrosive coating system may encounter during service. In addition, examples of test methods and standards for determination of the performance and durability of anticorrosive coatings have been included. The different types of anticorrosive coatings are presented, and the most widely applied generic types of binders and pigments in anticorrosive coatings are listed and described. Furthermore, the protective mechanisms of barrier, sacrificial, and inhibitive coatings are outlined. In the past decades, several alternatives to organic solvent-borne coatings have reached the commercial market. This review also presents some of these technologies and discusses some of their advantages and limitations. Finally, some of the mechanisms leading to degradation and failure of organic coating systems are described, and the reported types of adhesion loss are discussed. DOI : 10.1007/s11998-008-9144-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9144-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5602
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 135-176[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible Anticorrosive epoxy/clay nanocomposite coatings : rheological and protective properties / Milos D. Tomic in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 3 (05/2016)
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Titre : Anticorrosive epoxy/clay nanocomposite coatings : rheological and protective properties Type de document : texte imprimé Auteurs : Milos D. Tomic, Auteur ; Branko Dunjic, Auteur ; Jelena B. Bajat, Auteur ; Violeta Likic, Auteur ; Jelena Rogan, Auteur ; Jasna Djonlagic, Auteur Année de publication : 2016 Article en page(s) : p. 439-456 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Argile
Cloisite
Dispersions et suspensions
Epoxydes
Nanoparticules
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : The preparation of epoxy/clay nanocomposites (NCs) and their insertion into coatings are of great importance since the NCs could enhance the protective performances. In this study, epoxy NCs with 1–10 wt% of nanoclay Cloisite 30B (C30B) were prepared by the sonication-assisted solution method. The rheological measurements of epoxy/C30B suspensions revealed non-Newtonian, shear-thinning behavior of the uncured NCs, with an increase in the viscosity, yield stress, and shear modules with increasing organoclay content, while the dispersion effectiveness of C30B decreased. A significant enhancement of the rheological parameters was observed at the second percolation threshold (4.1 vol%) due to the formation of a continuous network of 45-layer-thick tactoids. Although NCs with 1–3 wt% C30B exhibited slightly reduced mechanical and adhesion properties compared with the cured reference epoxy resin, the epoxy primer and topcoat based on NC with 1 wt% C30B generally displayed improved impact resistance and maintained flexibility, pendulum hardness, and good adhesion properties. Two-layer coating systems, i.e., NC-based primers and topcoats, had higher corrosion stability in a salt spray chamber compared to the unmodified system. Note de contenu : - EXPERIMENTAL : Materials - Epoxy NCs preparation - Application of epoxy Ncs on steel substrates - Epoxy coatings preparation - Application of epoxy coatings on steel substrates - Sample characterization
- RESULTS AND DISCUSSION : Free swelling and rheological properties of the C30B/thinner dispersion - Rheological properties of the uncured epoxy Ncs - Structural characterization of cured epoxy Ncs - Adhesive and mechanical properties of epoxy NCs - Adhesive and mechanical properties of NC-based primer and topcoat - Anticorrosive properties of epoxy coatingsDOI : 10.1007/s11998-015-9762-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9762-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26285
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Code-barres Cote Support Localisation Section Disponibilité 18071 - Périodique Bibliothèque principale Documentaires Disponible Anticorrosive properties of a superhydrophobic coating based on an ORMOSIL enhanced with MCM-41-HDTMS nanoparticles for metals protection / Erik Uc-Fernández in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
[article]
Titre : Anticorrosive properties of a superhydrophobic coating based on an ORMOSIL enhanced with MCM-41-HDTMS nanoparticles for metals protection Type de document : texte imprimé Auteurs : Erik Uc-Fernández, Auteur ; Jorge González-Sánchez, Auteur ; Alejandro Ávila-Ortega, Auteur ; Yamile Pérez-Padilla, Auteur ; J. Manuel Cervantes-Uc, Auteur ; Javier Reyes-Trujeque, Auteur ; William A. Talavera-Pech, Auteur Année de publication : 2023 Article en page(s) : p. 347-357 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
Analyse quantitative (chimie)
Angle de contact
Anticorrosifs
Anticorrosion
Caractérisation
Energie de surface
Hexadécyltriméthoxysilane
Hydrophobie
Matériaux mésoporeux
Métaux -- Revêtements protecteurs
Microscopie
Nanoparticules
Revêtements organiques
Revêtements protecteurs
Spectroscopie d'impédance électrochimique
Surfaces fonctionnellesIndex. décimale : 667.9 Revêtements et enduits Résumé : The anticorrosive properties of hexadecyltrimethoxysilane (HDTMS) functionalized MCM-41 silica particles (MCM-41-HDTMS) incorporated into a methyltriethoxysilane (MTES) sol-gel matrix coatings were studied. The MCM-41 particles were synthesized and functionalized with HDTMS, and added to a sol composed of MTES:methanol:NH4OH 7M to create a coating. The materials synthesized with and without MCM-41-HDTMS were deposited, by dip coating, on Cu and Fe sheets, and were physically characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle, surface energy using the Owens, Wendt, Rabel, and Kaelble (OWRK) method, and by electrochemical impedance spectroscopy (EIS). The addition of the MCM-41-HDTMS to the MTES matrix induced an increase of the contact angle by about 10 degrees with an augment in its dispersive component, caused by a lofty deposition of long carbon chains from HDTMS over the high surface area of the MCM-41 particles, changing from hydrophobic to superhydrophobic materials with a contact angle of 155° for the Cu-MTES-HDTMS sample. EIS results show that the addition of MCM-41-HDTMS increases the charge transfer resistance providing better protection to metals. The results show that with the addition of MCM-41-HDTMS to an MTES matrix it is possible to synthesize superhydrophobic coatings capable of limiting the corrosion degradation process. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of MCM-41-HDTMS particles - Synthesis of coatings - Application of the coating - Characterization
- DISCUSSION AND RESULTS : Scanning electron microscopy and elemental chemical analysis (SEM-EDS) - Atomic force microscopy (AFM) - Contact angle and surface energy - Electrochemical impedance spectroscopy
- Table 1 : Atomic percentages of the main elements present in coatings obtained by EDS analysis
- Table 2 : Surface energy of all substrates calculated by OWRK method
- Table 3 : Quantitative impedance analysis for Cu, Cu-MTES, and Cu-MTES-HDTMS systems
- Table 4 : Quantitative impedance analysis for Fe, Fe-MTES, and Fe-MTES-HDTMS systemsDOI : https://doi.org/10.1007/s11998-022-00675-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00675-1.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38847
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 1 (01/2023) . - p. 347-357[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Anticorrosive properties of the double-layer PANI-(graphene oxide)/epoxy coating in protecting carbon steel in saltwater / Ahmad Diraki in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Anticorrosive properties of the double-layer PANI-(graphene oxide)/epoxy coating in protecting carbon steel in saltwater Type de document : texte imprimé Auteurs : Ahmad Diraki, Auteur ; Sasha Omanovic, Auteur Année de publication : 2023 Article en page(s) : p. 995-1006 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Epoxydes
Métaux -- Revêtements protecteurs
Oxyde de graphène
Polyaniline
Revêtements multicouches
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The work reports result in improving the anticorrosive properties of a commercial epoxy coating by forming a double-layer coating structure. First, a thin (ca. 5 μm) electrically conductive polyaniline (PANI) coating was wormed directly on the carbon steel (CS) surface, on top of which a thicker (ca. 20 μm) epoxy coating was applied. The inner PANI layer was also loaded with graphene oxide (GO). The resulting anticorrosive properties of the coatings were investigated in 3.5 wt.% NaCl employing electrochemical techniques, while the surface and cross-sectional morphology of the coatings was examined by scanning electron microscopy (SEM). The results showed that the commercial epoxy coating started gradually failing several days after its exposure to the electrolyte, while it took 37 days for larger pores to appear in the PANI/epoxy coating, which then gradually continued to fail. On the other hand, the PANI-GO/epoxy coating maintained its high corrosion resistance, without forming impedance-detectable pores, over the entire testing period (two months). The excellent corrosion protection properties of the PANI-GO/epoxy coating were prescribed solely to the presence of the underlying PANI-GO layer, which represents a better barrier for the transport of hydrated corrosive ions to the CS surface, through the combined action of charge (repulsion of hydrated corrosive anions and iron oxide film formation), surface energy (hydrophobicity), and blocking mechanisms. Note de contenu : - EXPERIMENTAL : Materials - Instrumentation - Sample preparation - Preparation of the coatings - Corrosion measurements - Surface characterization
- RESULTS AND DISCUSSION : Physical characterization of the coatings - Anticorrosive properties of the coatings-electrochemical measurements - Long-term corrosion study
- Table 1 : Technical characteristics of the profilometer
- Table 2 : Corrosion current determined from Tafel measurements recorded on the naked (unprotected) CS surface and the CS surface protected by the three coatings
- Table 3 : EEC parameter values obtained by modelling the EIS spectra presented in Fig. 5DOI : https://doi.org/10.1007/s11998-022-00719-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00719-6.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39443
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Anticorrosive self healing coatings Type de document : texte imprimé Auteurs : Ajay Chaurasiya, Auteur Année de publication : 2020 Article en page(s) : p. 56-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Catalyseurs
Emulsification
Métathèse (chimie)
Métaux -- Revêtements protecteurs
Microcapsules
Monomères
Nanocapsules
Passivité (Chimie)
Polymérisation
Revêtement autoréparant
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Autonomic healing materials respond without external intervention to environmental stimuli in a nonlinear and productive fashion, and have great potential for advanced engineering systems. Self-healing coatings, which autonomically repair and prevent corrosion of the underlying substrate, are of particular interest. Notably, the worldwide cost of corrosion has been year estimated to be nearly $300 billion per year. Recent studies on self-healing polymers have demonstrated repair of bulk mechanical damage as welI as dramatic increases in the fatigue life. Non-metallic (based on polymers or oxides) and metallic protective coatings are used to protect metal products against the harmful action of the corrosion environment Various approaches for achieving healing functionality encapsulation have been demonstrated, including reversible chemistry, networks, microvascular nanoparticle phase separation, poly-ionomers, fibres hollow and separation. monomer phase. The majority of these systems, however, have serious chemical and mechanical limitations, preventing their use as coatings. Modem engineered coatings are highly optimized materials in which dramatic modifications of the coating chemistry are unlikely to be acceptable. Here, we describe a generalized approach to self-healing polymer-coating systems, and demonstrate its effectiveness for both model and industrial ly important coating systems. Note de contenu : - Definition of self-healing
- Design strategies
- Release of healing agents
- Microcapsule embedment
- Hollow fiber embedment
- Microvascular system
- Reversible cross-links
- Diels-Alder (DA) and retro-DA reaction
- Ionomers
- Supramolecular polymers : Miscellaneous technologies - electrohydrodynamics
- CONDUCTIVITY : Shape memory effect
- Nanoparticle migrations
- Co-deposition
- Self-healing corrosion protection coatings polymeric coatings
- Protection of mild steel
- Protection of aluminium alloy
- Protection of magnesium alloy
- Coatings containing micro-nanocapsules
- Hybrid-oxide coatings
- Other self-healing coatings
- Self-healing process
- experimental analysis for cross cut corrosion resistance test
- Others applications
- Fig. 1 : Schematic representation of self-healing concept using embedded microcapsules
- Fig. 2 : Light microscopic picture of encapsulated DCPD and Grubb's catalyst
- Fig. 3 : Ring opening metathesis polymerization of DCPD
- Fig. 4 : Optical micrographs of hollow glass fibers
- Fig. 5 : Schematic representation of sel-healing concept using hollow fibers
- Fig. 6 : Schematic showing self-healing materials with 3D microvascular networks
- Fig. 7 : Schematic showing formation of highly cross-Iinked polymer (3M4F) using a multi-diene (four furan moieties, 4F) and multi-dienophile (three maleimide moieties, 3M) via DA reactions
- Fig. 8 : Chemical structure of functionalized maleimide and furan monomers
- Fig. 9 : Thermally reversible cross-linking reaction between TMI and TF through DA and retro-DA reactions
- Fig. 11 : Preparation of thermally reversible polyamides
- Fig. 12 : Schematic showing reversible ionic interactions
- Fig. 13 : Examples of supramolecular polymers from the literature : main-chain supramolecular polymers and side-chain supramolecular polyemrs
- Fig. 17 : Polymeric bis-terpyridine-metal complex (charge and anions omitted)
- Fig. 18 : Schematic showing electrohydrodynamic aggregation of particles
- Fig. 19 : Schematic showing conductive self-healing materials
- Fig. 20 : Representative three-dimensionsl profiles of a spherical indent at load of 15 N fresh indent and after healing above the austenite finish temperature
- Fig. 21 : Schematics showing electrolytic co-deposition of microcapsules (or mesoporous nanoparticles containing corrosion inhibitors) with metal ions
- Fig. 22 : Schematic illustration of a crack in the epoxy coating
- Fig. 23 : Schematic representation of the self-healing effect of the TiO, particle polymer composite coating
- Fig. 24 : Schematic Illustration of self healing zipper-like mechanism
- Fig. 25 : Schematic Self-healing mechanism of polyelectrolyte multilayers
- Fig. 25 : Schematic shows how a capsule is created
- Fig. 26 : Schematic shows structure of silane film
- Fig. 27 : Epoxy with control, epoxy with corrosion inhibitor and epoxy with self healing additives
- Fig. 28 : Schematic showing the reflow effect of self-haling clear coatsEn ligne : https://drive.google.com/file/d/1Z-i4m7ZBZI117NIGydOCioBCW5SAUQyz/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34661
in PAINTINDIA > Vol. LXX, N° 9 (09/2020) . - p. 56-82[article]Réservation
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