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Corrosion-resistant composite coatings based on a graphene oxide–metal oxide/urushiol formaldehyde polymer system / Lei Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
[article]
Titre : Corrosion-resistant composite coatings based on a graphene oxide–metal oxide/urushiol formaldehyde polymer system Type de document : texte imprimé Auteurs : Lei Zhang, Auteur ; Wupin Wang, Auteur ; Haitang Wu, Auteur ; Zeyu Zheng, Auteur ; Ming Wei, Auteur ; Xiaohua Huang, Auteur Année de publication : 2021 Article en page(s) : p. 1209-1225 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Bases (chimie)
Copolymère urushiol formaldéhyde
Dioxyde de titane
Métaux -- Revêtements protecteurs
Oxyde d'yttrium
Oxyde de graphène
Résistance chimique
Revêtements organiques
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.Index. décimale : 667.9 Revêtements et enduits Résumé : Composite coatings were fabricated based on a graphene oxide–metal oxide/urushiol formaldehyde polymer (GO–TiO2/UFP, GO–SiO2/UFP and GO–Y2O3/UFP) system with modifications, and its effectiveness in corrosion protection of metal substrates was demonstrated. First, a GO–TiO2 composite was synthesized using titanium dioxide loading on GO via 3-aminopropyltriethoxysilane (APTES). The GO–Y2O3 composite was synthesized using nano-yttrium oxide intercalating into GO through two different silane coupling agents. The GO–SiO2 composite was synthesized via an in-situ two-step sol-gel process utilizing APTES and tetraethylorthosilicate (TEOS) in an aqueous ethanol solution. The morphology and structure of the GO–metal oxide composites (GO–TiO2, GO–Y2O3 and GO–SiO2) were studied. Subsequently, GO–metal oxides were incorporated into UFP to investigate the composite’s effectiveness in corrosion protection of metal substrates. Compared with GO–TiO2/UFP and GO–Y2O3/UFP, GO–SiO2/UFP showed superior alkali-resistance enhancing performance. Additionally, GO crosslinked with APTES–TiO2 via covalent bonds and the well-dispersed GO–TiO2 in UFP improved the electrochemical corrosion properties of the UFP coatings, most likely due to the obstruction of the diffusion pathways inside the UFP coating matrix, thus preventing the diffusion of penetrating species. It was revealed that the corrosion resistance of GO–TiO2/UFP composite coating was noticeably higher than GO–SiO2/UFP and GO–Y2O3/UFP composite coatings. Note de contenu : - MATERIALS AND METHODS : Materials - Fabrication process of the composite coatings - Characterization of composite coatings - Analysis of chemical resistance properties
- RESULTS AND DISCUSSION : FTIR analysis - Microstructure and chemical composition of GO–metal oxide in UFP - XRD analysis - XPS analysis - Electrochemical tests - Chemical resistance of the UFP composite coatings - Corrosion protection mechanism
- Table 1 : The XPS results for the GO–TiO2, GO–Y2O3 and GO–SiO2 sample
- Table 2 : Electrochemical parameters obtained from the polarization curves of the UFP coatings containing different contents of GO–TiO2, GO–Y2O3, GO–SiO2 and MGO
- Table 3 : Electrochemical parameters obtained from the EIS spactra of the UFP coatings containing different contents of GO–TiO2, GO–Y2O3 and GO–SiO2
- Table 4 : Resistance of the GO–TiO2/UFP, GO–Y2O3/UFP and GO–SiO2/UFP composite coatings against chemical attack after immersion in 30% H2SO4, 10% NaOH and 3% NaCl solution at room temperatureDOI : https://doi.org/10.1007/s11998-021-00480-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00480-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36426
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1209-1225[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22991 - Périodique Bibliothèque principale Documentaires Disponible Corrosion-resistant super-amphiphobic (PVDF-fnAl2O3) coating with thermal and mechanical stability / Nadiah Ghazali in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
[article]
Titre : Corrosion-resistant super-amphiphobic (PVDF-fnAl2O3) coating with thermal and mechanical stability Type de document : texte imprimé Auteurs : Nadiah Ghazali, Auteur ; Wan Jefrey Basirun, Auteur ; Azmi Mohammed Nor, Auteur ; Mohd Rafie Johan, Auteur ; Fariza Abdul Rahman, Auteur Année de publication : 2024 Article en page(s) : p. 589-599 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine
Amphiphobie
Anticorrosifs
Anticorrosion
Caractérisation
Fluoroalkylsilane
Hydrophobie
Mouillabilité
Polyfluorure de vinylidène
PyrolyseLa pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation.
Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente.
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The thermal and mechanical stability of amphiphobic anti-corrosion coating is evaluated in this study. The coating was fabricated from functionalized nano Al2O3 and polyvinylidene fluoride (PVDF) and analyzed using FTIR, DSC, TGA, XRD, abrasion and cross-hatched adhesion test analyses. DSC and XRD revealed the presence of multiple crystalline phases of PVDF in the coating which eventually increased the crystallinity and melting temperature. The removal of the CFx chain from alkylsilane occurred at elevated temperatures, which decreased the repellent characteristic. Overall, the coating demonstrated good thermal stability until the temperature of 450°C with the ISO class 2 adhesion. Note de contenu : - EXPERIMENTAL METHODS : Materials - Experimental procedure - Characterization
- RESULTS AND DISCUSSION : Coating wettability - Corrosion rate - Chemical composition and phase evaluation - Thermal properties - Mechanical properties
- Table 1 : The PVDF and FAS characteristic bands and the corresponding PVDF crystalline phases
- Table 2 : The melting temperature (Tm), melting enthalpy (H) and the calculated degree of crystallinity (Xc) for the single and double heating cycles
- Table 3 : The cross-hatched test performed on three different points for PVDF base and coating samplePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40779
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 2 (03/2024) . - p. 589-599[article]Cost-effective corrosion barriers / Samuel Kenig in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2016)
[article]
Titre : Cost-effective corrosion barriers : Novel epoxy nanoclay composites keep costs down whilst improving performance Type de document : texte imprimé Auteurs : Samuel Kenig, Auteur ; Roberto Cafagna, Auteur Année de publication : 2016 Article en page(s) : p. 28-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion
Argile
Epoxydes
Hydrophilie
Matériaux -- Propriétés barrières
Nanoparticules
Résistance à la flamme
Résistance électrique
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Small quantities of functionalised nanoclays hold great potential for the performance of conventional paint systems. Exfoliation, chemical compatibility and orientation are critical to enhance the barrier properties, resulting in improved corrosion resistance and fire retardancy. The novel coatings discussed in this article entail that a variety of different substrates can benefit from these properties. Note de contenu : - Surface treatment key for greatest barrier properties
- Hydrophilic nanoclay increases oxygen and humidity barrier
- Nanoclays reduce blistering and increase electrical resistance
- Functionalised nanoparticles enhance flame retardancy
- Anti-corrosion performance and fire retardancyEn ligne : https://drive.google.com/file/d/1ocfdgi4ivOmg-lsI22Wn2qrm74TA3Sxm/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26725
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2016) . - p. 28-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18224 - Périodique Bibliothèque principale Documentaires Disponible Cost-effective pigmentation in alkyd primers for steel : barrier anti-corrosion mechanism / William C. Johnson in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 831 (04/1994)
[article]
Titre : Cost-effective pigmentation in alkyd primers for steel : barrier anti-corrosion mechanism Type de document : texte imprimé Auteurs : William C. Johnson, Auteur Année de publication : 1994 Article en page(s) : p. 47-54 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Coût -- Contrôle
Formulation (Génie chimique)
Métaux -- Revêtements protecteurs
Oxyde de plomb
Oxyde de zinc
Pigments inorganiques
Polyalkydes
Primaire (revêtement)Index. décimale : 667.9 Revêtements et enduits Résumé : A major cost of alkyd primers for the protection of steel is the chemically active pigment. A low concentration of a pigment sufficient to just neutralize the acids that are formed during the drying process produces soaps and salts and eliminates chemically active acids and alkalis. Thus, barrier properties of the binder are secured. This reduces the raw material cost and increases the protection. A review of collected literature on the chemistry of alkyd primers and on exposure studies provides an understanding of barrier protection as related to alkyd primers. Formulating practices for alkyd primers to obtain superior protection at low cost are explained. Note de contenu : - INTRODUCTION : Definitions - Background
- PART I-COMPARATIVE EXPOSURE RESULTS : Earliest alkyd barrier formulation - Zinc oxide and red lead concentration ladders - SSPC PACE program 1
- PART II-CHEMISTRY, FORMULATION, AND COSTS : Unique chemistry of alkyd and drying oil cure - Formulating principles and practices - Savings in cost with barrier formulation
- DISCUSSION : NeutralizationPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18624
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Code-barres Cote Support Localisation Section Disponibilité 003465 - Périodique Bibliothèque principale Documentaires Disponible 003478 - Périodique Bibliothèque principale Documentaires Exclu du prêt Coupled effect of water absorption and ion transport in hydrated latex anti-corrosion coatings / Yu Ren Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
[article]
Titre : Coupled effect of water absorption and ion transport in hydrated latex anti-corrosion coatings Type de document : texte imprimé Auteurs : Yu Ren Zhou, Auteur ; Surya Effendy, Auteur ; Juner Zhu, Auteur ; Michael T. Petr, Auteur ; Colin Cwalina, Auteur ; Martin Z. Bazant, Auteur ; Bilge Yildiz, Auteur ; Ju Li, Auteur ; Michael P. Short, Auteur Année de publication : 2023 Article en page(s) : p. 187-200 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Gonflement (physique)
Humidité -- Absorption:Eau -- Absorption
Latex
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteurs
Transports d'ionsIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-based anti-corrosion coatings, which are environmentally-friendly replacements for organic solvent-based coatings, do not perform well enough for use in the most challenging corrosion environments. The high water absorption capacity of water-based latex films may reduce barrier performance by contributing to corrosive reactant/product transport. We seek to understand the coupled effects of water absorption and ion transport in hydrated latex films, and to propose mechanisms explaining these effects. Water absorption and ion transport in films immersed in deionized (DI) water were monitored by mass gain and electrical conductivity measurements, respectively. Despite very similar polymer compositions between films, large differences in water absorption and ion transport rates were observed and explained by percolating networks at latex particle boundaries which facilitate transport. A semi-continuum model with three-component diffusion and convection-like elastic relaxation supported the assumptions of the physical mechanisms governing water absorption and ion transport. The evidence of the coupled processes of water absorption and ion transport in hydrated latex films revealed in this study are useful for designing water-based coatings that provide high levels of corrosion resistance. Note de contenu : - METHODOLOGY : Paint composition - Water absorption - Leached ion transport - Cross-section scanning electron microscopy (SEM) - Structural and chemical characterization
- RESULTS AND DISCUSSION : SAXS and FTIR results - Water entry mechanism into latex films - Effect of water absorption on ion leaching -Semi-continuum model - Model fitting procedure - Model output and results - Comparison of model and experiment - Model validation
- Table 1 : List of boundary conditions at the plane of symmetry and at the film/water interface
- Table 2 : List of known and fitted parameter values for SF-NP and SF-TiO2
- Table 3 : Validation data set is obtained by mass balance, assuming sodium chloride mobile ions and di(propylene glycol) n-butyl ether coalescentDOI : https://doi.org/10.1007/s11998-022-00676-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00676-0.pdf?pdf=button Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38835
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 1 (01/2023) . - p. 187-200[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Crosslinked main-chain-type polybenzoxazine coatings for corrosion protection of mild steel / Xin Lu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)
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