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Water-based coatings powered by NANO-VpCI / Ron Camp in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4604 (01/2015)
[article]
Titre : Water-based coatings powered by NANO-VpCI Type de document : texte imprimé Auteurs : Ron Camp, Auteur ; Margarita Kharshan, Auteur Année de publication : 2015 Article en page(s) : p. 20-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Anticorrosifs
Anticorrosion
Application directe sur le métal
Complexes métalliques
Dépôt chimique en phase vapeur
Métaux -- Revêtements protecteurs
Nanoparticules
Polyacryliques
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Today's waterborne coatings are steadily approaching to fulfil several requirements that are usually met by solventborne systems (good adhesion, corrosion resistance and improved weathering). Aqueous technologies are generally preferred over their solvent-based counterparts due to ease of application, lower VOCs and cost. However, waterborne coatings still struggle to provide long term protection for metals in extremely corrosive environments.
Through research it has been found that combining Vapor Phase Corrosion Inhibitors (NANO-VpCI) with a non-zinc environmentally friendly metal complex inhibitor, will significantly improve the long-term corrosion protection of acrylic paints on steel substrates ; the combination of these inhibitors provides a synergetic multilayer defence of corrosion resistance through passivation and film formation.En ligne : https://drive.google.com/file/d/17vNymsezs-LNOKdzjs1MxyFaoraFQ80n/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22962
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4604 (01/2015) . - p. 20-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16800 - Périodique Bibliothèque principale Documentaires Disponible 16801 - Périodique Bibliothèque principale Documentaires Disponible Water-borne versus solvent-borne paints for protection of steel to atmospheric exposure / F. Fragata in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B3 (09/2006)
[article]
Titre : Water-borne versus solvent-borne paints for protection of steel to atmospheric exposure Type de document : texte imprimé Auteurs : F. Fragata, Auteur ; M. Morcillo, Auteur ; D. de La Fuente, Auteur ; D. Santos, Auteur ; E. Almeida, Auteur Année de publication : 2006 Article en page(s) : p. 237-244 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Anticorrosifs
Anticorrosion
Etudes comparatives
Métaux -- Revêtements protecteurs
Polymères hydrosolubles
Revêtement en phase solvant:Peinture en phase solvant
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-borne anticorrosive paints are acquiring increasing relevance for the anticorrosive protection of steel surfaces exposed to the atmosphere, mostly due to the restrictions imposed by environmental and health protection agencies. However, some companies continue to be reluctant to use paints of this type to protect steel against atmospheric corrosion. Part of this reluctance may be attributed to low confidence, mainly due to a lack of knowledge of the performance of water-borne paint systems compared with traditional organic solvent-based paint systems. This paper presents results of experimental studies and includes technical considerations on the anticorrosive performance of paint systems using water-borne or solvent-borne paints when exposed to atmospheres with different degrees of corrosivity. On the basis of the practical results and the considerations presented in this paper, it may be stated that water-borne paint systems are currently available which present excellent anticorrosive behaviour, even in highly corrosive atmospheres. Note de contenu : - General analysis of water-borne coating behaviour
- Technical considerations on the use of water-borne paint systems for anticorrosive protection of steel surfaces exposed in atmospheres with different corrosivity categories
- Table 1 : Solvent-borne paint systems
- Table 2 : Water-borne paint systems
- Table 3 : Characteristics of atmospheric corrosion test sites
- Table 4 : Results of atmospheric corrosion tests at the end exposure
- Table 5 : Results of cross-cutting testDOI : 10.1007/BF02699666 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699666.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5283
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B3 (09/2006) . - p. 237-244[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 005574 - Périodique Bibliothèque principale Documentaires Disponible Water permeation and corrosion resistance of single- and two-component hydrophobic polysiloxane barrier coatings / X. Sun in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
[article]
Titre : Water permeation and corrosion resistance of single- and two-component hydrophobic polysiloxane barrier coatings Type de document : texte imprimé Auteurs : X. Sun, Auteur ; S. Turnage, Auteur ; Nicholas Dhuyvetter, Auteur ; Erick B. Iezzi, Auteur ; Y. Yang, Auteur ; B. Chang, Auteur ; N. C. Muthegowda, Auteur ; S. K. Balijepalli, Auteur ; L. P. Wang, Auteur ; K. N. Solanki, Auteur ; K. Rykaczewski, Auteur Année de publication : 2017 Article en page(s) : p. 1247-1258 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Essais de résilience
Fourier, Spectroscopie infrarouge à transformée de
Hydrophobie
Matériaux -- Propriétés barrières
Microscopie électronique à balayage
Revêtements protecteurs
Spectroscopie d'impédance électrochimique
Test d'immersionIndex. décimale : 667.9 Revêtements et enduits Résumé : The degradation of corrosion preventative coatings contributes to the high cost and time requirements for maintaining structures in harsh environments. However, the development of new hydrophobic coatings holds the promise of extending the usable life of structures in marine environments. In this work, we quantify the barrier properties and corrosion resistance of two novel highly hydrophobic polysiloxane formulations and the legacy silicone alkyd topcoat used on the topside of Navy’s ships, all with haze gray pigmentation. Based on FTIR-ATR and EIS measurements of the pristine coatings, both the single- (1K) and the two-component (2K) polysiloxane provide significantly improved barrier characteristics (lower water diffusion coefficient and capacitance) than the silicone alkyd. These results were confirmed through a 3-month-long immersion corrosion test, which also showed that the 1K and 2K polysiloxane coatings had comparable degradation characteristic and remained highly hydrophobic. Note de contenu : - EXPERIMENTAL : Materials - Preparation of two-component polysiloxane coating - Preparation of single-component polysiloxane coating - Water diffusion coefficient measurements using FTIR-ATR - Immersion corrosion tests - Characterization of the pristine and corroded coated steel samples
- RESULTS AND DISCUSSION : Characterization of the pristine coatings - Immersion corrosion tests - Scribe testsDOI : 10.1007/s11998-017-9918-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9918-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29625
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1247-1258[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19441 - Périodique Bibliothèque principale Documentaires Disponible Waterbased epoxy technologies for metal coating applications / Daniel Suckley in PAINTINDIA, Vol. LXX, N° 12 (12/2020)
[article]
Titre : Waterbased epoxy technologies for metal coating applications Type de document : texte imprimé Auteurs : Daniel Suckley, Auteur Année de publication : 2020 Article en page(s) : p. 78-86 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Epoxydes
Essais de brouillard salin
Formulation (Génie chimique)
Métaux -- Revêtements protecteurs
Revêtements en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy resins are well known as high performance materials in various construction and metal coating applications, providing the combined properties of chemical resistance, adhesion, corrosion resistance and mechanical strength. They are one of the best materials available when comparing performance against relative cost and this has in turn led to epoxies being the substance of choice for use as flooring materials and for the corrosion protection of metal. They are often supplied as a two component system comprising a resin and a curing agent. Increasing environmental concems worldwide has led industries to experience a graduai shift towards water-based technologies as limits on emissions, VOC content and safety rulings become more prevalent across the world. Epoxy resins by their very nature are fundamentally incompatible with water and careful design of the molecule be it a curing agent or epoxy resin is crucial to deliver the products in aqueous media but when fully cured give the same high performance as conventional epoxy based materials. This careful design often leads to performance that exceeds that of conventional technologies which this paper intends to describe in detail. High molecular weight resins can be supplied at low easy-to-use viscosities giving performance advantages in the coating such as fast drying times and long pot )ives. Curing agents were designed with low amine contents through careful adjustments to their chemical structure giving a perfect balance between water miscibility and full compatibility with epoxy resins. The Combined waterbased resin and hardener system is further formulated in a 2 -pack corrosion protection coating that give high performance even when applied at relatively low dry film thickness, and is comparable to that ach ieved with conventional solvent-based coatings. Note de contenu : - Waterbased epoxy coating development
- Performance testing
- Fig. 1 : The chemical structure of a bisphenol A diglycidyl ether epoxy resin (BADGE)
- Fig. 2 : Reactive sites on a standard epoxy resin
- Fig. 3 : Film-forming mechanism of liquid-applied coatings
- Fig. 4 : The basic composition of a high performance waterbased epoxy resin
- Fig. 5 : Plot showing the viscosity rise profile of a waterbaset type epoxy emulsion (WB epoxy) and a liquid epoxy resin (YD 128) cured with the same curing agent
- Fig. 6 : Plot Showing the drying times of A waterbased type 1 epoxy emulsion (WB EPDXY) and a liquid epoxy resin (YD 128) cured with the same curing agent
- Fig. 7 : The generic chemical structure of a waterbased curing agent
- Fig. 8 : Viscosity profiles and coalescing behaviour of the base system (resin and curing agent)
- Fig. 9 : Adhesion properties of the formulated coating throughout it pot life
- Fig. 10 : Appearance of coated panels after 2000 hours of salt spray exposure (ASTM B117)
- Fig. 11 : Test data and coating appearance after salt water immersion
- Fig. 12 : The appearance of a waterbased coated panel and a solvent-based coated panel after 2000 hours salt spray exposure (ASTM B117)
- Table 1 : Physical specifications of the waterbased epoxy (Cetepox 484 R) and waterbased curing agent (Epotec THW 4510)
- Table 2 : Panel evaluation after salt-spray exposure
- Appendix A : Formulation for a 2-packWaterbased corrosion protection coating
- Appendix B : A summary of the main coating properties of the formualtion in A
- Appendix C : Formulation for a 2-packSolvent based corrosion protection coatingEn ligne : https://drive.google.com/file/d/1e75Op2FUkYv3N3Fd-eyPy5nBSgkLGw5M/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35203
in PAINTINDIA > Vol. LXX, N° 12 (12/2020) . - p. 78-86[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22556 - Périodique Bibliothèque principale Documentaires Disponible Waterborne coatings based on acrylic latex containing nanostructured ZnO as an active additive / Martina Dankova in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Waterborne coatings based on acrylic latex containing nanostructured ZnO as an active additive Type de document : texte imprimé Auteurs : Martina Dankova, Auteur ; Andrea Kalendova, Auteur ; Jana Machotova, Auteur Année de publication : 2020 Article en page(s) : p. 517-529 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Antimicrobiens
Corrosion
Essais (technologie)
Formulation (Génie chimique)
Latex
Liants
Nanoparticules
Oxyde de zinc
Polyacryliques
Revêtements (produits chimiques):Peinture (produits chimiques)
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : This work was devoted to the study of the properties of an acrylate latex-based binder synthesized by semicontinuous emulsion polymerization. Nanoparticles of zinc oxide (NPsZnO) in an amount of 1.5 wt% with respect to the polymer content were added to the binder during the synthesis procedure. The binder was then homogenized with various anticorrosion pigments, fillers, and additives to obtain model anticorrosion paints. In addition, model paints with expected enhanced antimicrobial resistance designed for the protection of mineral substrates were also formulated and prepared. The effects of NPsZnO on the physicomechanical properties and on the chemical, anticorrosion, and antimicrobial resistance of the paint films were examined. The properties of the paints based on the synthesized binders were also compared to those of a commercial acrylate-type binder. The results show that incorporation of NPsZnO into the latex during the synthesis provided stable polymeric dispersions exhibiting physicochemical, mechanical, and anticorrosion properties that were superior to those of a blank binder (containing no nanoparticles) as well as to the commercial binder. It was also demonstrated that the binder with NPsZnO provided anticorrosion paints that are usable as coatings for environments with a moderate corrosion burden as well as paints for interior applications with reduced biocide contents. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Preparation of latexes - Formulation and preparation of the pigmented points - Preparation of paint films samples
- TESTING METHODS : Determination of the characteristic properties of the pigments, fillers, and binders - Physicomechanical and chemical properties of the prepared coatings - Antimicrobial properties of the coating films
- RESULTS AND DISCUSSION : Determination of the characteristic material properties - Hardness evaluation : Buchholz indentation test - Flash corrosion evaluation for the anticorrosion paints - Evaluation of mechanical and chemical resistance of the anticorrosion paints - Evaluation of the corrosion resistance of the paint films after exposure to a condensation-water atmosphere - Evaluation of the antimicrobial resistance of the paints designed for mineral substratesDOI : https://doi.org/10.1007/s11998-019-00302-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00302-6.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34000
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Waterborne corrosion-resistant hydrophobic alkyd resin composite coatings modified with fluorinated acrylate–siloxane and submicron-sheet zinc phosphate pigment / Shenjie Zhong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
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