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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 the double-layer PANI-(graphene oxide)/epoxy coating in protecting carbon steel in saltwater / Ahmad Diraki in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Anticorrosive properties of the double-layer PANI-(graphene oxide)/epoxy coating in protecting carbon steel in saltwater Type de document : texte imprimé Auteurs : Ahmad Diraki, Auteur ; Sasha Omanovic, Auteur Année de publication : 2023 Article en page(s) : p. 995-1006 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Epoxydes
Métaux -- Revêtements protecteurs
Oxyde de graphène
Polyaniline
Revêtements multicouches
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The work reports result in improving the anticorrosive properties of a commercial epoxy coating by forming a double-layer coating structure. First, a thin (ca. 5 μm) electrically conductive polyaniline (PANI) coating was wormed directly on the carbon steel (CS) surface, on top of which a thicker (ca. 20 μm) epoxy coating was applied. The inner PANI layer was also loaded with graphene oxide (GO). The resulting anticorrosive properties of the coatings were investigated in 3.5 wt.% NaCl employing electrochemical techniques, while the surface and cross-sectional morphology of the coatings was examined by scanning electron microscopy (SEM). The results showed that the commercial epoxy coating started gradually failing several days after its exposure to the electrolyte, while it took 37 days for larger pores to appear in the PANI/epoxy coating, which then gradually continued to fail. On the other hand, the PANI-GO/epoxy coating maintained its high corrosion resistance, without forming impedance-detectable pores, over the entire testing period (two months). The excellent corrosion protection properties of the PANI-GO/epoxy coating were prescribed solely to the presence of the underlying PANI-GO layer, which represents a better barrier for the transport of hydrated corrosive ions to the CS surface, through the combined action of charge (repulsion of hydrated corrosive anions and iron oxide film formation), surface energy (hydrophobicity), and blocking mechanisms. Note de contenu : - EXPERIMENTAL : Materials - Instrumentation - Sample preparation - Preparation of the coatings - Corrosion measurements - Surface characterization
- RESULTS AND DISCUSSION : Physical characterization of the coatings - Anticorrosive properties of the coatings-electrochemical measurements - Long-term corrosion study
- Table 1 : Technical characteristics of the profilometer
- Table 2 : Corrosion current determined from Tafel measurements recorded on the naked (unprotected) CS surface and the CS surface protected by the three coatings
- Table 3 : EEC parameter values obtained by modelling the EIS spectra presented in Fig. 5DOI : https://doi.org/10.1007/s11998-022-00719-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00719-6.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39443
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 995-1006[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible A brief review of the graphene oxide-based polymer nanocomposite coatings: preparation, characterization, and properties / Zahra Shahryari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
[article]
Titre : A brief review of the graphene oxide-based polymer nanocomposite coatings: preparation, characterization, and properties Type de document : texte imprimé Auteurs : Zahra Shahryari, Auteur ; Mahdi Yeganeh, Auteur ; Khalil Gheisari, Auteur ; Bahram Ramezanzadeh, Auteur Année de publication : 2021 Article en page(s) : p. 945–969 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Anticorrosifs
Anticorrosion
Caractérisation
Matériaux hybrides
Matériaux hybrides -- Propriétés électriques
Matériaux hybrides -- Propriétés mécaniques
Oxyde de graphène
Polymères
Polymères -- Synthèse
Revêtements protecteurs
ThermocinétiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Graphene oxide (GO), due to its large surface area and suitable active sites, is receiving significant attention as a good additive in various coatings due to its excellent chemical resistance, anticorrosion, and high mechanical performances. Furthermore, due to its unique structural dimensions and electrical, thermal, optical, and chemical properties, GO has attracted notable interest in diverse areas, including biomedical and antibacterial applications. This review focuses on the polymer nanocomposite coatings embedded with GO, their synthesis methods, and the role of GO to improve the corrosion protection performance, mechanical and electrical properties, antibacterial application, and thermal conductivity. Note de contenu : - GRAPHENE OXIDE (INTRODUCTION AND HISTORY)
- GRAPHENE OXIDE IN THE POLYMER COMPOSITE COATINGS
- SURFACE FUNCTIONALIZATION OF GRAPHENE OXIDE : Covalent modification of graphene oxide - Noncovalent modification of graphene oxide - Other modification agents of graphene oxide
- SYNTHESIS ROUTES OF POLYMER/GRAPHENE OXIDE COMPOSITE : Melt blending - Solution mixing - In situ polymerization method
- CHARACTERISTICS OF GO/POLYMER NANOCOMPOSITES : Corrosion protective performance - Mechanical properties of GO/polymer nanocomposites - Electrical properties of GO/polymer nanocomposite - Antibacterial behavior of GO/polymer nanocomposite - Thermal conductivity of the GO/polymer nanocompositeDOI : https://doi.org/10.1007/s11998-021-00488-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00488-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36205
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 945–969[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22969 - Périodique Bibliothèque principale Documentaires Disponible Chloride transmission in silane composite emulsion-protected concrete under the coupling effect of flexural loading and wetting–drying cycles / Mengjun Hu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
[article]
Titre : Chloride transmission in silane composite emulsion-protected concrete under the coupling effect of flexural loading and wetting–drying cycles Type de document : texte imprimé Auteurs : Mengjun Hu, Auteur ; Shaochun Li, Auteur ; Xu Chen, Auteur ; Shiyu Sui, Auteur ; Yongjuan Geng, Auteur ; Jialin Jiang, Auteur ; Zhijun Liu, Auteur Année de publication : 2024 Article en page(s) : p. 1017-1030 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorures
Essais (technologie)
Isobutyltriethoxysilane
Matériaux cimentaires -- Revêtements protecteurs
Orthosilicate de tétraéthyleL'orthosilicate de tétraéthyle (TEOS) est un composé chimique de formule Si(OCH2CH3)4 ou plus simplement Si(OEt)4; l'abréviation TEOS (pour tetraethylorthosilicate) est généralement utilisée dans l'industrie du sol-gel, où il est intensivement étudié. La majorité des études en sol-gel pour des sols de silices ont utilisé ce produit comme précurseur.
Le TEOS est généralement produit par alcoolyse du tétrachlorure de silicium SiCl4 dans de l'éthanol CH3CH2OH :
SiCl4 + 4 CH3CH2OH → Si(OCH2CH3)4 + 4 HCl.
Il est utilisé pour la réticulation de silicones et possède certaines applications comme précurseur du dioxyde de silicium SiO2 dans l'industrie des semi-conducteurs6 dans le cadre d'une réaction sol-gel. La propriété remarquable du TEOS est en effet de former du SiO2 par simple hydrolyse en libérant de l'éthanol CH3CH2OH :
Si(OCH2CH3)4 + 2 H2O → SiO2 + 4 CH3CH2OH.
Oxyde de graphène
Réaction de couplage
Revêtements en phase aqueuse
Revêtements organiques
SilanesIndex. décimale : 667.9 Revêtements et enduits Résumé : The coupling effect of flexural loading and wetting–drying cycles on chloride transmission in silane composite emulsion-protected concrete is presented in this paper. Graphene oxide/isobutyltriethoxysilane (GS) and tetraethyl orthosilicate/isobutyltriethoxysilane (TS) composite emulsion was prepared to obstruct the penetration of chloride, and the influence of flexural loading and exposure time on the protective effect were mainly considered. The results show that the content and diffusion coefficient of chloride are affected significantly by flexural loading, exposure age, and protective emulsion. Loads with different stress ratios affect the internal transmission of chloride by changing the compactness of concrete. The prolongation of the exposure age leads to the accumulation of chloride, thereby increasing the internal chloride contents of concrete. The GS/TS composite emulsion reacts with the hydration products to form the hydrophobic layer, which can significantly prevent the penetration of chloride. In particular, the protective performance of GS under low stress ratios is better than that of TS, while under high stress levels, TS has better resistance to chloride erosion. Relatively speaking, the long-term protective effect of GS is better than that of TS. Note de contenu : - MATERIALS AND METHODS : Materials - Test methods
- RESULTS AND DISCUSSION : The content of chloride in silane-protected concrete subjected to flexural loading and wetting-drying cycles - Diffusion coefficient of chloride in silane-protected concrete subjected to flexural loading and wetting-drying cycles
- Table 1 : Chemical composition of cement (%)
- Table 2 : Materials for preparing the silane composite emulsions
- Fig. 1 : Preparation of composite emulsionDOI : https://doi.org/10.1007/s11998-023-00869-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00869-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41074
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 1017-1030[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24737 - Périodique Bibliothèque principale Documentaires Disponible 24688 - Périodique Bibliothèque principale Documentaires Disponible Composites of cysteamine functionalised graphene oxide and polypropylene / S. S. Abbas in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 3 (2021)
[article]
Titre : Composites of cysteamine functionalised graphene oxide and polypropylene Type de document : texte imprimé Auteurs : S. S. Abbas, Auteur ; T. McNally, Auteur Année de publication : 2021 Article en page(s) : p. 297-313 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Caractérisation
Composites -- Propriétés mécaniques
Copolymères greffés
CystéamineLa cystéamine est le plus simple aminothiol stable. Naturellement présente dans le corps humain, elle est un produit de la dégradation de l'acide aminé cystéine. Elle est utilisée dans le traitement de la cystinose sous le nom commercial Cystagon. La cystéamine est un antioxydant naturel qui est produit dans presque toutes les cellules mammifères. Elle est également connue pour son effet dépigmentant depuis quelques dizaines d'années. En crème, la cystéamine a une certaine efficacité pour le traitement de l'hyperpigmentation cutanée.
Greffage (chimie)
Mélanges (chimie)
Oxyde de graphène
Polypropylène
Transition vitreuseIndex. décimale : 668.4 Plastiques, vinyles Résumé : Cysteamine functionalised reduced graphene oxide (rGO) was grafted to polypropylene-graft-maleic anhydride (PP-g-MA) and subsequently melt blended with PP. The covalent bridging of rGO to PP-g-MA via the cysteamine molecule and co-crystallization are routes to promoting interfacial interactions between rGO and the PP matrix. A rheological percolation threshold was achieved for a nanofiller loading between 3 wt% and 5 wt%, but none detected for the composites prepared with un-functionalized rGO. At low loadings (0.1 wt%), functionalized rGO is well dispersed in the PP matrix, an interconnecting filler-filler, polymer-filler and polymer-polymer network is formed, resulting in increased tensile toughness (1 500%) and elongation at break (40%) relative to neat PP. Irrespective of whether the rGO was functionalised or not, it had a significant effect on the crystallization behavior of PP, inducing heterogeneous nucleation, increasing the crystallisation temperature (Tm) of PP by up to 10°C and decreasing the crystalline content (Xc) by ∼30% for the highest (5 wt%) filler loading. The growth of the monoclinic a-phase of PP is preferred on addition of functionalised rGO and b crystal growth suppressed. Note de contenu : - Materials
- Synthesis of PP-g-MA-rGOcyst
- Composite preparation
- Characterisation
- Table 1 : Nomenclature and composition of blends studied
- Table 2 : Thermal parameters for neat PP, PP/NF, PP/C/NF and PP/C/NF-F composites determined from DSC measurementsFWHM and ACS values calculated from XRD peaks for (100), (300), and (040) crystal planes. Kβ values tabulated for neat PP, PP/NF, PP/C/NF and PP/C/NF-F composites
- Table 3 : Glass transition temperature (Tg) determined from tan δ and Eʺ plots as a function of temperature, and tan δ values at Tg for neat PP, PP/NF, PP/C/NF and PP/C/NF-F compositesDOI : https://doi.org/10.1515/ipp-2020-4079 En ligne : https://drive.google.com/file/d/1ShZCNSk1QDvSAea3VelY1Njef3716PSD/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36372
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Code-barres Cote Support Localisation Section Disponibilité 23733 - Périodique Bibliothèque principale Documentaires Disponible Constructing robust and magnetic PU sponges modified with Fe3O4/GO nanohybrids for efficient oil/water separation / Dongdong Ge in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
PermalinkCorrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings / Asmaa R. Heiba in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
PermalinkCorrosion protection of carbon steel using hydrotalcite/graphene oxide nanohybrid / Thuy Duong Nguyen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
PermalinkCorrosion-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)
PermalinkEfficacy and mechanism of GO/IBTS coating against microbial fouling of concrete surfaces in marine tidal areas / Shaochun Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
PermalinkElectrogalvanization using Zn-graphene oxide composite coatings with enhanced corrosion resistance performance / M. Y. Rekha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
PermalinkElectrophoretically deposited graphene oxide–polymer bilayer coating on Cu-Ni alloy with enhanced corrosion resistance in simulated chloride environment / Geetisubhra Jena in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)
PermalinkEnhanced 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)
PermalinkEnhanced 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)
PermalinkEnhanced wear resistance of epoxy coatings on steel using graphene oxide / Amanda B. Filizzola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
PermalinkFabrication and investigating the structural and dielectric characteristics of In2O3-GOPMMA-PC nanostructures for electronics nanodevices / Dhay Ali Sabur in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 1 (02/2023)
PermalinkGraphene nanoribbon as promising filler of composite fibers and textiles / Hidetoshi Matsumoto in CHEMICAL FIBERS INTERNATIONAL, Vol. 65, N° 4 (12/2015)
PermalinkGraphene nanoribbon as promising filler of composite fibers and textiles / Hidetoshi Matsumoto in CHEMICAL FIBERS INTERNATIONAL, (09/2016)
PermalinkGraphene oxide flakes bolster carbon fibre / Changsheng Xiang in JEC COMPOSITES MAGAZINE, N° 83 (08-09/2013)
PermalinkGraphene oxide grafted maleic anhydride vinyl acetate co-polymer and its enhancement of flame retardant and UV-resistance of retanned leather / Yazhou He in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 6 (06/2019)
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