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Self-healing metal oxides could protect against corrosion / David Chandler in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4641 (05/2018)
[article]
Titre : Self-healing metal oxides could protect against corrosion Type de document : texte imprimé Auteurs : David Chandler, Auteur Année de publication : 2018 Article en page(s) : p. 27-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alumine
Anticorrosifs
Anticorrosion
Métaux -- Revêtements protecteurs
Revêtement autoréparantIndex. décimale : 667.9 Revêtements et enduits Résumé : Researchers at MIT have found that an ultra-thin layer of aluminium oxide, though solid, can flow like a liquid instead of cracking.
A solid oxide protective coating for metals can, when applied in sufficiently thin layers, deform as if it were a liquid, filling any cracks and gaps as they form.
The thin coating layer should be especially useful to prevent leakage of tiny molecules that can penetrate through most materials, such as hydrogen gas that could be used to power fuel-cell cars, or the radioactive tritium (a heavy form of hydrogen) that forms inside the cores of nuclear power plants.
Most metals, with the notable exception of gold, tend to oxidise when exposed to air and water. This reaction, which produces rust on iron, tarnish on silver and verdigris on copper or brass, can weaken the metal over time and lead to cracks or structural failure. But there are three known elements that produce an oxide that can actually serve as a protective barrier to prevent any further oxidation: aluminium oxide, chromium oxide and silicon dioxide.Note de contenu : - Environmental transmission electron microscope used
- Aluminium oxide studied
- Figure : Reserachers have found that a solid oxide protective coating for metals can, when applied in sufficiently thin layers, deform as if it were a liquid, filling any cracks and gaps as they formEn ligne : https://drive.google.com/file/d/1qGlYQnAOuZ6JqYLqtc61QLLLVQm9HIKR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30621
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4641 (05/2018) . - p. 27-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19929 - Périodique Bibliothèque principale Documentaires Disponible Self-healing nanocomposite coatings / Robert A. Lezzi in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4568 (01/2012)
[article]
Titre : Self-healing nanocomposite coatings Type de document : texte imprimé Auteurs : Robert A. Lezzi, Auteur ; Runqing Ou, Auteur ; Ken Eberts, Auteur ; Daniel Eberly, Auteur ; Sau-Pei Lee, Auteur Année de publication : 2012 Article en page(s) : p. 41-43 Langues : Anglais (eng) Catégories : Matériaux hybrides
Matériaux intelligents
Revêtement autoréparant:Peinture autoréparante
Revêtements en phase aqueuse:Peinture en phase aqueuse
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : A polymer coating imparts two important functions to theunderlying substrate. The aesthetic function gives the substrate the desired appearance ; the protective function protects the substrate from mechanical and chemical damage. Due to routine use, surface scratches are generated and micro-cracks develop and eventually lead to macroscopic damage, which results in the coating losing its aesthetic and protective functions. The use of a self-healing coating will : preserve the original finish of the coated structure ; increase the service life of the structure ; and eliminate the need to frequently refinish the coating. The coating material not only repairs minor surface scratches but deep scratches as well. The self-healing function is aided in part by the novel morphology of the coating. Note de contenu : - Technical approach
- Solvent-based nanocomposite self-healing coating
- Nanocomposite self-healing coatingEn ligne : https://drive.google.com/file/d/1Xr9pVazb2O1hCF1M4bpb_JXHG6BahCf-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13378
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 202, N° 4568 (01/2012) . - p. 41-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13551 - Périodique Bibliothèque principale Documentaires Disponible Self-healing primers extend protection / Subramanyam V. Kasisomayajula in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2018)
[article]
Titre : Self-healing primers extend protection : Improving performance in organic zinc-rich primers to prevent corrosion Type de document : texte imprimé Auteurs : Subramanyam V. Kasisomayajula, Auteur ; Gerald O. Wilson, Auteur Année de publication : 2018 Article en page(s) : p. 22-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier L'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.
Adhésion
Anticorrosifs
Anticorrosion
Electrochimie
Epoxydes
Métaux -- Revêtements protecteurs
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Primaire (revêtement)
Revêtement autoréparant
Revêtements -- Additifs
Revêtements bi-composant
Revêtements multicouches
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : Zinc-rich coatings are used in a wide range of industries to protect steel substrates in extremely corrosive environments. However, with exposure to a corrosive environment over time, the zinc particles corrode to form a non-conductive oxide layer around the particles, decreasing the sacrificial protective capability of the coating. Incorporating a self-healing additive in organic zinc-rich primers can extend the lifetime of the protective system. Note de contenu : - Zinc-rich primers with healing agent maintain protection
- Electrochemical results support self-healing performance
- Additive helps maintain coating adhesion
- Self-healing functinality enhances protection
- Fig. 1 : Using protective coatings to extend substrate lifetime. The formation of ferric oxyhydroxide indicates metallic corrosion
- Fig. 2 : Self-healing protective coatings extend substrate lifetime by delaying mechanical degradation
- Fig. 3 : One-coat systems. (a) Standard commercially available epoxy-based zinc-rich primer. (b) Zinc-rich primer incorporating microencapsulated epoxy-based healing agent
- Fig. 4 : Electrochemical characterisation via salt fog exposure of (a) unscribed substrates and (b) scribed substrates, and (c) linear polarisation of scribed substrates
- Fig. 5 : Single layer two-component epoxy-polyamide zinc-rich primers after 250 hours of B117 exposure followed by adhesion test
- Fig. 6 : Single layer two-component epoxy-polyamide zinc-rich primers after 500 hours of B117 exposure followed by adhesion test
- Fig. 7 : Comparison of two-coat systems. A) Commercially available system. b) Primer with self-healing additive
- Fig. 8 : Two-layer two component epoxy-polyamide-based zinc-rich coatings scribed after 1000 h salt fog exposure and scraping, and comparison of average adhesion lossEn ligne : https://drive.google.com/file/d/1EPLO4oDsRlQtvlBTPztytYAO1tI_IP1n/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30836
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Code-barres Cote Support Localisation Section Disponibilité 20098 - Périodique Bibliothèque principale Documentaires Disponible Self-healing through microencapsulated agents for protective coatings / Claus Schreiner in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)
[article]
Titre : Self-healing through microencapsulated agents for protective coatings Type de document : texte imprimé Auteurs : Claus Schreiner, Auteur ; Sabine Scharf, Auteur ; Volkmar Stenzel, Auteur ; Albert Rössler, Auteur Année de publication : 2017 Article en page(s) : p. 809-816 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Copolymère mélamine-Formaldéhyde
Copolymère urée formaldéhyde
Microcapsules
Revêtement autoréparant:Peinture autoréparanteIndex. décimale : 667.9 Revêtements et enduits Résumé : The use of microcapsules containing healing agents, which can serve as source of self-healing for coatings, was investigated. The appropriate self-repairing coatings are designed to be used for heavy-duty corrosion protection or for the protection of moisture-sensitive substrates like wood. Microcapsules based on thermoset resins (urea–formaldehyde and melamine–formaldehyde) which contained components of different chemical natures (resins or inhibitors) were fabricated using emulsion techniques. The subsequent characterization included optical, fluorescence, and electron microscopy as well as adapted microindentation techniques to determine capsule break forces. Different model coatings were formulated making use of varying amounts of healing agent-charged microcapsules. The coated samples were then injured under controlled conditions (by Erichsen cupping in the case of steel, by simulated hail in the case of wood) and then subjected to salt spray testing (natural and accelerated), weathering, or even real-life exposure, always in comparison with a blank. The results obtained demonstrate the superiority of microcapsule-based self-healing coatings compared to classical protection formulations, and appropriate coating systems have in the meantime been successfully brought to the market. DOI : 10.1007/s11998-017-9921-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9921-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28922
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 4 (07/2017) . - p. 809-816[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19194 - Périodique Bibliothèque principale Documentaires Disponible Self-healing using microcapsules in paints / Mary-Hélène Delvaux in DOUBLE LIAISON, N° 572 (12/2009)
[article]
Titre : Self-healing using microcapsules in paints Type de document : texte imprimé Auteurs : Mary-Hélène Delvaux, Auteur ; Annick Lourtie, Auteur ; Mireille Wenkin, Auteur Année de publication : 2009 Article en page(s) : p. 26-30 Note générale : Bibliogr. Langues : Français (fre) Catégories : Anticorrosion
Encapsulation
Revêtement autoréparant:Peinture autoréparanteIndex. décimale : 667.6 Peintures Résumé : The concept of self-healing was developed to increase to reliability and service life of coating systems in a wide variety of applications and then minimising the cost of maintenance and rehabilitation.
Relevant existing strategies to accomplish self healing have been investigated : micro-encapsulation of healing agents, resins with high flow behaviour and other emergent techniques.
In this paper, self-healing using microencapsulation wil be discussed. Commercially available paints for corrosion protection and for exterior wall usage were selected. Custom made microcapsules containing oils or corrosion inhibitors, of various diameters and various shell compositions were added to those paints in different concentrations. The self healing process has been followed by visual inspection and accelerated corrosion tests. Strong dependencies and limitations were pointed out : concentrations of capsules, nature of the core, diameter and type of paints. The challenge is to find to appropriate microcapsules to embed in the paint.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7590
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Code-barres Cote Support Localisation Section Disponibilité 011824 - Périodique Bibliothèque principale Documentaires Disponible Short cycle times and high productivity for smart components / Christoph Bontenackels in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 7 (2021)
PermalinkSmall is beautiful - for longer / Matthias Wittmar in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2009 (04/2009)
PermalinkSmart coatings-current research and applications / M. Mascarenhas in SURFACE COATINGS INTERNATIONAL, Vol. 90, 1 (01/2007)
PermalinkSpray-assisted layer-by-layer assembly of decorated PEI/PAA films: morphological, growth and mechanical behavior / Eduardo Ortega in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)
PermalinkStimuli-responsive polyurethane-urea polymer for protective coatings and dampening material / Anastassija Wittmer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
PermalinkSuperhydrophobic surfaces for corrosion protection : a review of recent progresses and future directions / Dawei Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
PermalinkSustainable microcapsules for self-healing and corrosion protection in powder coatings / Vimal Saimi in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4661 (05/2020)
PermalinkSynthesis and property of room-temperature self-healable cathodic electrophoretic deposition coatings based on cationic waterborne polyurethane / Yingyu Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)
PermalinkThe polyaniline-modified TiO2 composites in water-based epoxy coating for corrosion protection of Q235 steel / Xuehui Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
PermalinkUV-curable alkyd coating with self-healing ability / Saman Nornadila Mohd in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
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