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Recent developments in smart coatings for corrosion protection / Ravindra G. Puri in PAINTINDIA, Vol. LXII, N° 5 (05/2012)
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Titre : Recent developments in smart coatings for corrosion protection Type de document : texte imprimé Auteurs : Ravindra G. Puri, Auteur ; Pawan D. Meshram, Auteur ; Rajkumar S. Sirsam, Auteur Année de publication : 2012 Article en page(s) : p. 55-61 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Conducteurs organiques
Corrosion
Matériaux intelligents
Microcapsules
Polyélectrolytes
Revêtements
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé :
ABSTRACT
Corrosion is a destructive process that often causes failure in metallic components and structures. The best protective coatings that are most commonly used for corrosion control rely mostly on barrier and inhibitive mechanism. However, progressively stringent environmental regulations have resulted in the ban of many commercially available corrosion protective coatings due to the harmful effects of their solvents or corrosion inhibitors. The present paper focuses on recent developments in multifunctional, smart coating which releases corrosion inhibitor as demanded by coating damage and the presence of a corrosive environment for the autonomous control of corrosion. A new generation of anticorrosive coatings possessing passive matrix functionality and active nanocontainers responds to changes in the local environment has prompted great interest. New materials such as nano-structured materials, microcapsules and intrinsically conducting polymers (ICPs) present opportunities for development of damage-responsive coatings.Note de contenu : - Protective mechanism of anticorrosive coatings
- Chromate and galvanic coatings
- Intrinsically conducting polymer (ICP) coatings
- Coating containing controlled release microcapsules
- Coating containing inhibitor-loaded nanocontainers : polyelectrolyte multilayer
- Protective biofilmsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15647
in PAINTINDIA > Vol. LXII, N° 5 (05/2012) . - p. 55-61[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14085 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in the anti-graffiti coatings : an attentive review / Shweta Amrutkar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
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Titre : Recent developments in the anti-graffiti coatings : an attentive review Type de document : texte imprimé Auteurs : Shweta Amrutkar, Auteur ; Aarti Purushottam More, Auteur ; Siddhesh Mestry, Auteur ; Shashank T. Mhaske, Auteur Année de publication : 2022 Article en page(s) : p. 717-739 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Etudes comparatives
Revêtements anti-graffitis
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : An anti-graffiti coating (AGC) is a protective layer applied on the surface (all types including cultural heritage and metallics) to limit possible vandalism phenomena. AGCs are one of the elementary classes of coating materials, creating a barrier layer between substrate and graffiti, preventing the penetration of graffiti into the substrate and helping easy graffiti removal. AGC can be applied on porous and nonporous substrates, including concrete, mortar, stone, granite, metals, etc. AGCs are mainly classified as permanent, semi-permanent, and sacrificial. Sacrificial AGCs include waxes, polysaccharides, and polysiloxane, whereas permanent AGCs include fluorinated polymers, nanoparticles-based coating, silicon, and polyurethanes (PU). The use of hybrid polymers in AGCs containing silane or siloxane and fluoropolymers-based compounds with effective anti-graffiti (AG) properties is an introductory class in the future AGC market. Nowadays, nanotechnology is widely used in AG pretreatment. These polymer chemistries of AGCs find the application on historical walls, public places, trains, houses, etc. The present article focuses on various types of AGCs, their current market trends based on multiple chemistries, mechanisms, and their performance with the structure–property relationships. Note de contenu : - Polysaccharide-based AGCs
- Waxes-based AGCs
- Fundamental AGCs
- Polyurethane (PU)-based AGCs
- Acrylic-based AGCs
- Fluorinated AGCs
- PU-based fluorinated AGCs
- Acrylic-based fluorinated AGCs
- Silicon-based fluorinated AGCs
- Miscellaneous fluorinated AGCs
- Silicon-based AGCs
- PU-based silicon AGCs
- Acrylate-based silicon AGCs
- Acrylic-PU silicon hybrid AGCs
- Epoxy-based silicon AGCs
- Miscellaneous silicon-based AGCs
- Polymer composite-based AGCs
- Table 1 : Summary of the types of AGC coatings and their advantages and disadvantagesDOI : https://doi.org/10.1007/s11998-021-00580-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00580-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38068
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings / Cheng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
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Titre : Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings Type de document : texte imprimé Auteurs : Cheng Wang, Auteur ; Siqi Huo, Auteur ; Shi Liu, Auteur ; Qinghua Hu, Auteur ; Qi Zhang, Auteur ; Zhitian Liu, Auteur Année de publication : 2021 Article en page(s) : p. 447-458 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Eau
Emulsions
Formulation (Génie chimique)
Intumescence (chimie)
Magnésium -- Alliages
Polyacrylates
Recyclage (déchets, etc.)
Résistance à l'humidité:Résistance à l'eau
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : The rapid development and widespread application of magnesium alloy bring about a significant amount of magnesium alloy scrap. Thus, we offer a feasible and simple way to realize the recycling of magnesium scrap in this work, applying it as a synergist in the intumescent fire-retardant coatings for steel structure. With the introduction of magnesium scrap, the fire resistance, thermal stability, and water tolerance of the as-prepared coatings significantly improved. According to ASTM E119 standards, the fire resistance of coatings was investigated in our laboratory. Adding only ~ 0.48 wt% of the scrap decreased the backside temperature of the coated steel from 310°C to 171°C, with a ~ 44.8% reduction, indicating obvious synergy. Moreover, the coating containing ~ 0.48 wt% scrap exhibited excellent thermal stability and water resistance, and its char yield at 800°C and water contact angle reached up to 27% and 80.6°, respectively. Based on the analysis of flame-retardant mechanism, the scrap and intumescent fire-retardant system jointly promoted the formation of an intumescent and compact char residue, thus suppressing the heat transfer and protecting the steel. Hence, using magnesium alloy scrap as a synergist contributed to realizing the recycling of waste and providing practical intumescent fire-retardant coatings for structural steel. Note de contenu : - EXPERIMENTAL : Materials - Preparation of scrap-modified core–shell polyacrylate emulsions - Preparation of intumescent fire-retardant coatings - Characterizations
- RESULTS AND DISCUSSION : Characterization of magnesium alloy scrap - Stability of the scrap-modified core–shell emulsion - Fire resistance of coatings - Influence of scrap on the char residue - Thermal stability of coatings - Water tolerance of coatings
- Table 1 : The formulation of core–shell polyacrylate emulsion
- Table 2 : The compositions of intumescent fire-retardant coatings
- Table 3 : Contents of C, O, Mg, Al, Si, and Ca in magnesium alloy scrap
- Table 4 : The influence of scrap on the stability of emulsionDOI : https://doi.org/10.1007/s11998-020-00413-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00413-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35606
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Code-barres Cote Support Localisation Section Disponibilité 22701 - Périodique Bibliothèque principale Documentaires Disponible Recycled rust protection / Hassan Salah Aly Emira in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2011 (04/2011)
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Titre : Recycled rust protection : Iron waste powders studied for possible use in protective coatings Type de document : texte imprimé Auteurs : Hassan Salah Aly Emira, Auteur ; Nagui A. Abdel-Khalek, Auteur Année de publication : 2011 Article en page(s) : p. 118-121 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion
Caoutchouc chloré
Epoxydes
Paraffines chlorées
Pigments
Polyalkydes
Revêtements protecteurs
UrethanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Waste powders consisting mainly of impurities generated during the recycling of steel in Egypt were tested both in their initial state and after removal of hazardous substances as anticorrosive pigments. Reasonable protection against corrosion was obtained, but the alkalinity of the product made it suitable for use only with certain binders. Note de contenu : - Possible applications include anticorrosive pigments
- Two different samples are collected and purified
- Test procedures outlined
- Pigments are tested in three binder systems
- Effective corrosion resistance can be obtained
- Reaction of powders with some binders limits useEn ligne : https://drive.google.com/file/d/1lla2aU3Rzrh8LLINERv9S8lokqjfuxSV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11168
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/2011 (04/2011) . - p. 118-121[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012920 - Périodique Bibliothèque principale Documentaires Disponible Réduction des gaz nocifs par la synthèse de la dispersion aqueuse des polyépoxydes / Zhonghuan Huang in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 28, N° 4 (10-11-12/2018)
[article]
Titre : Réduction des gaz nocifs par la synthèse de la dispersion aqueuse des polyépoxydes Type de document : texte imprimé Auteurs : Zhonghuan Huang, Auteur ; Ziqiang Zhu, Auteur ; Zihu Zhou, Auteur Année de publication : 2018 Article en page(s) : p. 529-538 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Dispersions et suspensions
Emulsifiants
Epoxydes
Polyéthylène glycol
Polymères en émulsion
Revêtements protecteurs
Stabilité au stockageIndex. décimale : 668.4 Plastiques, vinyles Résumé : Cet article tente d’étudier la façon de réduire les gaz nocifs par la synthèse de la dispersion aqueuse des polyépoxydes. Tout à bord, l'émulsifiant époxy non ionique a été synthétisé avec le polyéthylène glycol (PEG) 4000 et les polyépoxydes selon un rapport en masse de 1,25: 1 à 120 ° C pendant 4 heures. Ensuite, l'extension de réaction en chaîne par polyépoxydes et bisphénol A (BPA) a été réalisée selon un rapport en masse de 1: 2,7 à 160 ° C. Après avoir atteint une certaine valeur équivalente d'époxy, le polyéthylène glycol à terminaison du carboxyle (CT-PEG an anglais) et l'émulsifiant réactif synthétique ont été successivement ajoutése. Enfin, la dispersion aqueuse d’époxy a été préparée par conversion inverse. La vérification expérimentale montre que la dispersion aqueuse des polyépoxydes préparée présente une bonne stabilité au stockage; il peut être mélangé directement avec un agent sclérosant hydrique, sans nécessiter de dispersion à grande vitesse. Grâce à ces propriétés, la dispersion aqueuse des polyépoxydes proposée peut empêcher la libération intensive de composés organiques volatils (COV) dans le processus de production et promouvoir la protection de l'environnement et la sécurité des travailleurs. Il suffit de dire que cette dispersion s’applique aux solvants organiques dans la production des peintures anticorrosives industrielles, de sols et de murs. DOI : 10.3166/rcma.28.529-538 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32577
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