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Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)–ZnO nanocoating transition from superhydrophobic to hydrophobic state / Innocent O. Arukalam in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)
[article]
Titre : Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)–ZnO nanocoating transition from superhydrophobic to hydrophobic state Type de document : texte imprimé Auteurs : Innocent O. Arukalam, Auteur ; Ying Li, Auteur Année de publication : 2019 Article en page(s) : p. 1077-1088 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Hydrophobie
Matériaux -- Propriétés barrières
Mouillabilité
Oxyde de zinc
Revêtements protecteurs
Test d'immersionIndex. décimale : 667.9 Revêtements et enduits Résumé : The anticorrosion and barrier properties of poly(dimethylsiloxane) (PDMS)–ZnO nanocoating transition from superhydrophobic to hydrophobic state have been evaluated. The main objective was to appraise the durability performance of anticorrosion and barrier properties of the pristine superhydrophobic coating and its hydrophobic state after long-term exposure to marine water. Thus, water wettability, surface features, and corrosion resistance, as well as barrier performance of the 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane-modified PDMS–ZnO coating were evaluated after 15 cycles (1 h to 60 days) of immersion in 3.5 wt.% NaCl solution. The evaluations were made by use of surface analytical, physicochemical, and electrochemical techniques. The results show that the coating transformed from superhydrophobic state (after 1 h) to hydrophobic state (after 60 days). The transition was due to effect of corrosiveness of the salty water and disappearance of the surface air layer with consequent reduction in the surface roughness and increase in the porosity of the coating. Correspondingly, the value of the impedance modulus decreased from 4.257 × 109 Ω cm2 (after 1 h) to 7.175 × 108 Ω cm2 (after 60 days). The trend of coating film (Rcf) and charge transfer (Rct) resistances with immersion time was found to be somewhat stable after 40-day immersion time. The observed high values of impedance modulus (|Z|f=0.01 Hz), Rcf and Rct after 60 days of immersion clearly demonstrate that the anticorrosion property and barrier performance of the transformed hydrophobic PDMS–ZnO coating were good. Note de contenu : - Wettability results of the coating
- Results of surface microstructure and roughness of the coating
- Chemical composition of the superhydrophobic PDMS-ZnO nanocoating
- Electrochemical impedance spectroscopy (EIS) results
- Effect of wetting and immersion time on the anticorrosion behavior of the coatingDOI : 10.1007/s11998-018-00182-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00182-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32863
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1077-1088[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21127 - Périodique Bibliothèque principale Documentaires Disponible Anticorrosion healing properties of epoxy coating with poly(urea–formaldehyde) microcapsules encapsulated linseed oil and benzotriazole / Gan Cui in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
[article]
Titre : Anticorrosion healing properties of epoxy coating with poly(urea–formaldehyde) microcapsules encapsulated linseed oil and benzotriazole Type de document : texte imprimé Auteurs : Gan Cui, Auteur ; Feiyu Chen, Auteur ; Chuchu Zhang, Auteur ; Jianguo Liu, Auteur ; Xing Xiao, Auteur ; Zili Li, Auteur Année de publication : 2023 Article en page(s) : p. 1977-1996 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Benzotriazole
Copolymère urée formaldéhyde
Encapsulation
Epoxydes
Huile de linL'huile de lin ou "huile de graines de lin" est une huile de couleur jaune d'or, tirée des graines mûres du lin cultivé, pressées à froid et/ou à chaud ; parfois elle est extraite par un solvant, en vue de l'usage industriel ou artistique, principalement comme siccatif, ou huile auto-siccative.
Les utilisations de l'huile de lin dérivent de sa richesse en acides gras polyinsaturés, en particulier en acides linolénique et linoléique, qui lui doivent leur nom.
L'huile de lin polymérise spontanément à l'air, avec une réaction exothermique : un chiffon imbibé d'huile peut ainsi, dans certaines conditions, s'enflammer spontanément.
Pour ses propriétés de polymère, l'huile de lin est employée seule, ou mélangée à d'autres huiles, résines et solvants, et est utilisée en tant que : Imprégnateur et protecteur des bois à l'intérieur comme à l'extérieur : protection contre l'humidité, les champignons et insectes, et contre la poussière par son caractère antistatique, composant de certains vernis de finition, liant de broyage pour la peinture à l'huile, agent plastifiant du mastic de vitrier, agent durcisseur de diverses préparations, agent de cohérence et liant dans la fabrication du linoléum.
Microcapsules
Oxyde de graphène
Revêtement autoréparant
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, two-component microcapsules were prepared with benzotriazole (BTA) and linseed oil as the core material and poly(urea–formaldehyde) as the shell material. The effects of stirring speed, temperature, type and amount of emulsifier, core/shell mass ratio, and initial pH on the microcapsule structure and properties were studied, and the optimal preparation process of the two-component microcapsules was obtained. On this basis, the shell stability of the microcapsules was enhanced by adding graphene oxide (GO), and the added content of GO was optimized by means of microscopic observation. The results show that the optimal preparation process of the two-component microcapsules is as follows: The stirring speed is 500 r/min, the temperature is 55°C, the amount of polyvinyl alcohol is 5 g, core/shell mass ratio is 1.25:1, the initial pH is 3, the added amount of GO is 0.3 wt%, and the encapsulation rate of the prepared microcapsules was as high as 83.44%. Subsequently, different contents of graphene-based two-component microcapsules were embedded into the epoxy coating, and the best ones were optimized by self-healing performance test (scratch test) and anticorrosion performance test (salt spray test and electrochemical impedance spectroscopy). The experimental results show that the impedance modulus of the damaged graphene-based two-component self-healing coating after repair can reach 1.29 × 109 Ω cm2, and the repair process can last for 24 h. Note de contenu : - EXPERIMENTAL : Materials - Preparation of graphene-based two-component microcapsules - Preparation of graphene-based two-component self-healing coatings - Characterization
- RESULTS AND DISCUSSION : Process optimization of two-component microcapsules - Preparation optimization and performance characterization of graphene-based two-component microcapsules - Self-healing and anticorrosion properties of graphene-based two-component self-healing coatings
- Table 1 : Equivalent circuit fitting values of ER, 10-MCs/ER, and 10-GO-MCs/ERDOI : https://doi.org/10.1007/s11998-023-00791-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00791-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40175
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 1977-1996[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24337 - 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
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Application of conducting polymers in corrosion protection / S. P. Sitaram in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 866 (03/1997)
[article]
Titre : Application of conducting polymers in corrosion protection Type de document : texte imprimé Auteurs : S. P. Sitaram, Auteur ; James O. Stoffer, Auteur ; T. J. O'Keefe, Auteur Année de publication : 1997 Article en page(s) : p. 65-69 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Conducteurs organiques
Liants
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : The use of oxides, such as chromates, is highly effective in corrosion protection. Scientists are looking at alternative materials to replace environmentally hazardous materials, e.g., chromates. One of the group of materials identified as corrosion inhibiting are intrinsically conducting polymers. This paper focuses on the use of ICPs as a possible corrosion inhibitive substance. This paper also reviews literature on the research of different groups on the use of polyaniline and other conducting polymers as corrosion inhibitors. Intrinsically conducting polymers, especially poly-aniline, are being studied with great interest. Studies indicate that they have the potential of replacing some of the currently available materials. Note de contenu : - CONDUCTING POLYMERS AND CORROSION
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Code-barres Cote Support Localisation Section Disponibilité 003535 - Périodique Bibliothèque principale Documentaires Disponible Applying Lean Manufacturing to corrosion protection processes / Lucia Fullalove in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 9 (09/2017)
[article]
Titre : Applying Lean Manufacturing to corrosion protection processes Type de document : texte imprimé Auteurs : Lucia Fullalove, Auteur ; Algan Tezel, Auteur Année de publication : 2017 Article en page(s) : p. 13-19 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Efficience dans l'industrie
Lean (production)
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Material deterioration as result of corrosion is often accepted as unavoidable and it has led to a general lack of awareness of the economic aspects of corrosion. The estimated cost of corrosion as per Hoar committee findings is approximately 3.5 percent of the U.K. GDP. For major asset owners, maintenance of anti-corrosion technology is an integral part of asset design and management to ensure asset integrity within its service life.
Defects and failure of assets during service can often be traced back to corrosion deterioration, thus corrosion monitoring and corrosion protection become a vital and integral part of construction and maintenance throughout the life of an asset. Several corrosion protection and monitoring techniques have been developed and these are widely used in the industry with the objective of slowing down the inevitable corrosion-degradation process. The techniques selected will vary depending on the material to be protected and the exposure environment. It is important to note that application and maintenance of corrosion protection such as painting and cathodic protection are time-consuming, costly and have safety implications.
In the construction environment, corrosion protection and monitoring are often carried out, not as stand-alone activities, but alongside other work. Therefore, good planning, logistics and engagement with other work trades become even more crucial to ensure that the corrosion-protection processes can be carried out and delivered within time and budget constraints and at the desired quality standard.Note de contenu : - Lean thinking
- What is lean ?
- Lean methods and systems : The last planner system or pull planning - Visual management and the 5Ss - Continuous improvement tools
- Corrosion protection and lean
- Table 1 : Conceptual link between corrosion protection methods and some lean tools/techniques
- Figure : Schematic example of value stream mapping for corrosion protectionEn ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6134 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29488
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