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Enhanced anticorrosion property of epoxy resin membrane by nano-organic montmorillonite / Jing-Yi Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)
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[article]
Titre : Enhanced anticorrosion property of epoxy resin membrane by nano-organic montmorillonite Type de document : texte imprimé Auteurs : Jing-Yi Liu, Auteur ; Shi-Zhao Wu, Auteur ; Zhu Shen, Auteur ; Jing Gao, Auteur ; Xin-Quan Hu, Auteur ; Guo-Hua Li, Auteur Année de publication : 2022 Article en page(s) : p. 1087-1100 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Biomatériaux
Caractérisation
Composites
Epoxydes
Membranes (technologie)
Métaux -- Revêtements protecteurs
Montmorillonite
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Montmorillonite (Mnt) and organic polymer composite membrane are widely used to enhance the corrosive resistance of metal materials due to their unique properties. Herein, a uniform anticorrosion membrane coated on aluminum plate was fabricated with organic-modified nano-Mnt (OMnt) and epoxy resin (EP) as raw materials, which showed good smoothness, wear property and resistance to acidic and salty corrosion. The surface morphology, crystal phase, chemical composition, and microstructure of the OMnt/EP membrane were characterized by optical microscopy, small-angle X-ray diffraction, FTIR, SEM, and TEM, respectively. The results showed that the OMnt/EP membrane was constituted of OMnt and EP. The interplanar distance of OMnt was expanded from 1.44 to 5.36 nm. Electrochemical corrosive resistance of the membrane was tested with Tafel polarization curves and electrochemical impedance spectroscopy. The results showed that the thickness of the membrane had a positive effect on its anticorrosion performance. When its thickness was 0.18 mm, its corrosion voltage (Pcorr) increased along with its content of OMnt, while its corrosion current (Icorr) showed increasing, decreasing and increasing trend as the content increased from 1 to 5%, from 5 to 7% and from 7 to 9%, respectively. When its content of OMnt was the same, its Pcorr increased along with its thickness, while its Icorr decreased along with its thickness. Its maximum impedance reached 2.29 × 107 Ω, which was much greater than that of other EP membranes. Moreover, the corrosion resistance of the composite membranes decreased gradually as the immersion time increased, and the content of OMnt and the ratio of EP to OMnt could also affect the corrosion resistance of the membrane. These results show that the OMnt/EP composite membrane exhibits excellent anticorrosive property, which is highly promising for wide applications in industry. Note de contenu : - EXPERIMENTAL AND CHARACTERIZATION : Chemical regents and materials - Cation exchange capacity (CEC) of Mnt - Organics modified nano-Mnt (OMnt) - Preparation of OMnt/EP nanocomposite membrane - Characterization - Electrochemical performance
- RESULTS AND DISCUSSION : XRD - SEM - TEM - Contact angle - FTIR - Tafel polarization curve - EIS - Adhesion test
- Table 1 : Interlayer distance of HDA-modified Mnt with different HDA content
- Table 2 : Pcorr and Icorr of OMnt/EP with different OMnt contents and thicknesses
- Table 3 : EIS values of OMnt/EP with different OMnt contents and thicknesses
- Table 4 : The comparison of the impedance of montmorillonite-based composite coatingsDOI : https://doi.org/10.1007/s11998-021-00587-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00587-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38038
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 4 (07/2022) . - p. 1087-1100[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23574 - Périodique Bibliothèque principale Documentaires Disponible Enhanced corrosion resistance and mechanical properties of nanostructured graphene-polymer composite coating on copper by electrophoretic deposition / S. Kumari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)
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Titre : Enhanced corrosion resistance and mechanical properties of nanostructured graphene-polymer composite coating on copper by electrophoretic deposition Type de document : texte imprimé Auteurs : S. Kumari, Auteur ; A. Panigrahi, Auteur ; S. K. Singh, Auteur ; S. K. Pradhan, Auteur Année de publication : 2018 Article en page(s) : p. 583-592 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Composites
Dépôt électrophorétique
Electrochimie
Essais (technologie)
Oxyde de graphène
Poly(4-vinylpyridine-méthacrylate de butyle)
Résistance à la fissurationIndex. décimale : 667.9 Revêtements et enduits Résumé : Composite coating of reduced graphene oxide (RGO) and poly (4-vinylpyridine-co-butyl methacrylate) (PVPBM) on copper was produced by electrophoretic deposition (EPD) technique. The structural and morphological characterizations of the RGO-PVPBM coating were carried out using a Raman spectrometer and a field emission scanning electron microscope, respectively. The thermal stability of the coating was analyzed by thermo-gravimetric analysis, and the corrosion resistance properties were examined by potentiodynamic polarization measurements and electrochemical impedance spectroscopy in 3.5% NaCl solution. At optimal EPD conditions of operating voltage of 5 V and total deposition time of 15 min, a uniform crack-free RGO-PVPBM composite coating is obtained. The microscratch experiment has shown an enhancement in the crack propagation resistance of RGO-PVPBM composite coating up to 3.7 times and adhesive strength increased ~2 times compared to PVPBM coating, thereby making it a potential damage tolerance surface coating on Cu substrate. The potentiodynamic measurements clearly show that RGO-PVPBM acts as a protective coating for Cu in 3.5% NaCl solution. The corrosion inhibition efficiency for RGO-PVPBM coating was calculated to be 95.4% which clearly indicates that the tailored RGO-PVPBM composite is an excellent barrier coating to ion diffusion and corrosive electrolyte with considerably enhanced corrosion resistance. Note de contenu : - EXPERIMENTAL : RGO-PVPBM - Characterization techniques - Electrochemical tests
- RESULTS AND DISCUSSION : Structural investigations - Microstructural investigations of EPD coating - Thermo-gravimetric analysis (TGA) - Microscratch adhesion and crack propagation resistance of coating - Electrochemical measurement and corrosion resistance properties of coating - Microstructural changes after electrochemical testDOI : 10.1007/s11998-017-0001-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0001-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30754
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 583-592[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20024 - Périodique Bibliothèque principale Documentaires Disponible Enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalized graphene oxide / Jing Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 1 (01/2020)
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Titre : Enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalized graphene oxide Type de document : texte imprimé Auteurs : Jing Li, Auteur ; Wenwen Chan, Auteur ; Jincan Cui, Auteur ; Hanxun Qiu, Auteur ; Guangzhi Yang, Auteur ; Shiyou Zheng, Auteur ; Junhe Yang, Auteur Année de publication : 2020 Article en page(s) : p. 171-180 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Caractérisation
Epoxydes
Greffage (chimie)
Oxyde de graphène
Polymères en émulsion
Résistance aux conditions climatiques
Revêtements -- Détérioration
Revêtements -- Effets du rayonnement ultraviolet
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyetheramine (D230), an epoxy curing agent, was grafted on graphene oxide (GO) surfaces, which can be stably dispersed in a waterborne curing agent for more than 8 months. Waterborne epoxy coatings reinforced by D230-functionalized GO (DGO) were prepared on carbon steel surfaces. According to the electrochemical impedance spectra, the impedance modulus at 0.1 Hz remained at 2.2 × 109 Ω after 150 days of immersion in 3.5% NaCl electrolytes for 0.2 wt% DGO-reinforced waterborne epoxy coatings, while that of the neat epoxy coatings dropped below 1 × 107 Ω after 10 days. Besides, the addition of DGO enhanced the weathering resistance of waterborne epoxy coatings. After 60 days of the UV aging test, the yellow color index of neat epoxy coatings was 1.6 times that of 0.5 wt% DGO/epoxy coatings. The residual pencil hardness of the 0.5 wt% DGO/epoxy coatings was three levels higher than that of neat epoxy coatings. Note de contenu : - EXPERIMENTAL : Preparation of DGO - Preparation of the DGO/epoxy composite coatings - Characterizations
- RESULTS AND DISCUSSION : Functionalization of GO - Morphologies of the DGO/epoxy coatings - Corrosion protection properties of the DGO/epoxy coatings - Weathering resistance of the DGO/epoxy coatingsDOI : 10.1007/s11998-019-00252-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00252-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33736
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 1 (01/2020) . - p. 171-180[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21517 - Périodique Bibliothèque principale Documentaires Disponible Enhancement of anticorrosion protection via inhibitor-loaded ZnAlCe-LDH nanocontainers embedded in sol–gel coatings / You Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 2 (03/2018)
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Titre : Enhancement of anticorrosion protection via inhibitor-loaded ZnAlCe-LDH nanocontainers embedded in sol–gel coatings Type de document : texte imprimé Auteurs : You Zhang, Auteur ; Peihang Yu, Auteur ; Junjie Wu, Auteur ; Fei Chen, Auteur ; Yindong Li, Auteur ; Yulin Zhang, Auteur ; You Zuo, Auteur ; Yangaolin Qi, Auteur Année de publication : 2018 Article en page(s) : p. 303-313 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Anticorrosifs
Anticorrosion
Cerium
Hydroxydes doubles lamellaires
Nanoparticules
Sol-gel, Procédé
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : Inhibitor-loaded ZnAlCe layered double hydroxide (LDH) nanocontainers were prepared through the co-precipitation method. Vanadate and molybdate were used as guest inhibitors intercalating in the interlayer galleries of ZnAlCe-LDHs. The samples were characterized in terms of morphology, structure, and release behavior by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and inductively coupled plasma (ICP) techniques. To investigate inhibition behavior, the LDHs particles were embedded in a hybrid sol–gel (SiO x /ZrO x ) layer on aluminum alloy 2024 measured by electrochemical impedance spectroscopy (EIS). The EIS results show that the sol–gel coating with inhibitor-loaded ZnAlCe-LDH particles exhibits high corrosion resistance due to the active inhibition by the dissolution of ZnAlCe-LDHs and inhibitor anions and the exchange behavior of LDHs. Compared with the addition of ZnAlCe-MoO4-LDHs, the coating embedded with ZnAlCe-V2O7-LDHs exhibited better anticorrosion abilities and provided effective protection after a long immersion time. Note de contenu : - EXPERIMENTAL SECTION : Synthesis of ZnAlCe-LDHs intercalated with inhibiting anions - Preparation of sol-gel coatings doped with LDHs - Examination methods
- RESULTS AND DISCUSSION : Characterization of LDHs - Release of inhibitor anions in LDHs - Protective performance of the sol-gel coatings modified with LDHsDOI : 10.1007/s11998-017-9978-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9978-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30284
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 2 (03/2018) . - p. 303-313[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19742 - Périodique Bibliothèque principale Documentaires Disponible Enhancement of corrosion protection of 3-glycidoxypropyltrimethoxysilane-based sol–gel coating through methylthiourea doping / Rajendran Babhu Vignesh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
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[article]
Titre : Enhancement of corrosion protection of 3-glycidoxypropyltrimethoxysilane-based sol–gel coating through methylthiourea doping Type de document : texte imprimé Auteurs : Rajendran Babhu Vignesh, Auteur ; Mathur Gopalakrishnan Stehuraman, Auteur Année de publication : 2014 Article en page(s) : p. 545-554 Note générale : Bibliogr. Langues : Américain (ame) Catégories : 3-Glycidoxypropyltrimethoxysilane
Anticorrosion
Electrochimie
Métaux -- Revêtements protecteurs
Méthylthiourée
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Protection of aluminum metal and its alloys from corrosion is a key requirement for many engineering applications. Nowadays, sol–gel coating technology is recognized as the ideal replacement for chromate conversion coatings. The present work makes use of 3-glycidoxypropyltrimethoxysilane (GPTMS) as a precursor for sol–gel coating. GPTMS was subjected to hydrolysis and subsequent condensation reaction to get a three-dimensional network and methylthiourea (MTU) was incorporated into the sol–gel matrix. MTU-doped GPTMS-based sol–gel coatings were applied over aluminum metal by dip coating method. The resultant coating was studied by FTIR, XRD and SEM. MTU-doped GPTMS-based sol–gel coatings increased the hydrophobic nature of the coating and were stable up to a temperature of 450°C. The protective nature of the coatings was evaluated in a 1% NaCl environment using electrochemical impedance and polarization studies. The study has revealed that doping of MTU enhanced the protection ability of doped GPTMS-based sol–gel coating to a significant extent. Note de contenu : - EXPERIMENTAL : Materials - Preparation of coating - Characterization of sol-gel coating - Corrosion-resistance behavior of coating
- RESULTS AND DISCUSSION : Fourier transform infrared analysis (FTIR) - X-ray diffraction analysis (XRD) - Thickness measurement by stylus profiler - Thermal stability of coating - Electrochemical behavior of sol-gel coating - Electrochemical impedance spectroscopy (EIS) - Potentiodynamic polarization study (PDS) - Scanning electron microscope with EDX analysisDOI : 10.1007/s11998-013-9557-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9557-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21715
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 4 (07/2014) . - p. 545-554[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16424 - Périodique Bibliothèque principale Documentaires Disponible Enhancing antibacterial and anticorrosion properties of 304 stainless steel surfaces: a multi-modification approach based on DA/PEI/SiO2/AMPs / De Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
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PermalinkPermalinkEnvironment-friendly cold-curing epoxy systems / Bernd Neffgen in EUROPEAN COATINGS JOURNAL (ECJ), N° 10/96 (10/1996)
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