Anticorrosive coatings / P. A. Sorensen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 135-176 Titre : Anticorrosive coatings : a review Type de document : texte imprimé Auteurs : P. A. Sorensen, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur ; Søren Kiil, Auteur Année de publication : 2009 Article en page(s) : p. 135-176 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Liants Pigments Index. décimale : 667.9 Revêtements et enduits Résumé : The main objective of this review is to describe some of the important topics related to the use of marine and protective coatings for anticorrosive purposes. In this context, "protective" refers to coatings for containers, offshore constructions, wind turbines, storage tanks, bridges, rail cars, and petrochemical plants while "marine" refers to coatings for ballast tanks, cargo holds and cargo tanks, decks, and engine rooms on ships. The review aims at providing a thorough picture of state-of-the-art in anticorrosive coatings systems. International and national legislation aiming at reducing the emission of volatile organic compounds (VOCs) have caused significant changes in the anticorrosive coating industry. The requirement for new VOC-compliant coating technologies means that coating manufacturers can no longer rely on the extensive track record of their time-served products to convince consumers of their suitability for use. An important aspect in the development of new VOC-compliant, high-performance anticorrosive coating systems is a thorough knowledge of the components in anticorrosive coatings, their interactions, their advantages and limitations, as well as a detailed knowledge on the failure modes of anticorrosive coatings. This review, which mainly deals with European experience and practice, includes a description of the different environments an anticorrosive coating system may encounter during service. In addition, examples of test methods and standards for determination of the performance and durability of anticorrosive coatings have been included. The different types of anticorrosive coatings are presented, and the most widely applied generic types of binders and pigments in anticorrosive coatings are listed and described. Furthermore, the protective mechanisms of barrier, sacrificial, and inhibitive coatings are outlined. In the past decades, several alternatives to organic solvent-borne coatings have reached the commercial market. This review also presents some of these technologies and discusses some of their advantages and limitations. Finally, some of the mechanisms leading to degradation and failure of organic coating systems are described, and the reported types of adhesion loss are discussed. DOI : 10.1007/s11998-008-9144-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9144-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5602 [article]

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A char stratification approach to characterization and quantitative thermal insulation performance of hydrocarbon intumescent coatings / Ying Zeng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 4 (07/2022) . - p. 1033-1043 Titre : A char stratification approach to characterization and quantitative thermal insulation performance of hydrocarbon intumescent coatings Type de document : texte imprimé Auteurs : Ying Zeng, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur ; Louise Ring, Auteur ; Søren Kiil, Auteur Année de publication : 2022 Article en page(s) : p. 1033-1043 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Borate de zinc Caractérisation Carbonisation Hydrocarbures Intumescence (chimie) Métaux -- Revêtements protecteurs Polyphosphate d'ammonium Pyrolyse La 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. Résistance à la flamme Revêtements multicouches Rhéologie Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : To protect structural steel in the event of a hydrocarbon fire, epoxy-based intumescent coatings, which expand to form a multicellular char layer, are increasingly used. Consequently, to improve formulations and understand the performance of such coatings, it is of great industrial and scientific interest to establish relationships between the char properties and the critical heating times of coated steel plates. In this work, a so-called Stratification Parameter (SP) that combines the relative expansions and insulation efficiencies of individual char layers (termed the sponge-like, the macroporous, and the compact phase, respectively), is introduced to characterize the properties of the multilayered intumescent coating char. An approximate linear relationship was revealed between the SP of the char and the fire-resistance performance (i.e., critical times to 400 and 550°C) of the intumescent coating. Furthermore, owing to the mapped-out exponential relationship between the dynamic viscosity minimum and the char appearance, it was discovered that the SP of the char can be effectively used to point out the required dynamic viscosity change of an intumescent coating to form a given char. Finally, results of thermogravimetric analyses suggest that constraining the coating mass loss during char degradation (to less than 28 wt% for the coatings of the present work) may prevent the formation of the less efficient sponge-like phase. The stratification methodology developed can be used to estimate expected thermal insulation properties of non-uniform hydrocarbon intumescent coating chars. Note de contenu : - EXPERIMENTAL SECTION : Coating materials and application - Fire-resistance performance - Rheological measurements of incipient intumescent chars - Thermal degradation of the intumescent coatings Digital microscope recordings of char structure - RESULTS AND DISCUSSION : Influence of the char expansion on the critical times - Stratification approach to thermal insulation of char layers - Parameters of interest for manipulating intumescent char properties - Table 1 : Composition of the series of zinc borate intumescent coatings (in wt%), APP = ammonium polyphosphate, MEL = melamine, ZB = zinc borate. The level of zinc borate remains constant at 5 wt% - Table 2 : Composition of the series of zinc borate-free intumescent coatings (in wt%), APP = ammonium polyphosphate, MEL = melamine DOI : https://doi.org/10.1007/s11998-021-00591-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00591-w.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38033 [article]

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CoaST Maritime Test Centre : an investigation of biofouling propensity / Morten L. Pedersen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 857-868 Titre : CoaST Maritime Test Centre : an investigation of biofouling propensity Type de document : texte imprimé Auteurs : Morten L. Pedersen, Auteur ; Burak Ulusoy, Auteur ; Claus Erik Weinell, Auteur ; Frederikke B. Zilstorff, Auteur ; Songgeng Li, Auteur ; Kim Dam-Johansen, Auteur Année de publication : 2023 Article en page(s) : p. 857-868 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Encrassement Essais (technologie) Evaluation Revêtements -- Détérioration Salissures biologiques Test d'immersion Index. décimale : 667.9 Revêtements et enduits Résumé : The performance of fouling control coatings (FCC) is evaluated based on static exposure on test sites worldwide. There are different standards concerning the evaluation of the performance of the FCC. However, to the knowledge of the authors, there is not a standardized reporting guideline for how to evaluate the test site in which the FCC is exposed. Several factors such as water conditions, seasonal biofouling, and accessibility of sunlight can vary dependent on placement within or between test sites. This in turn makes it difficult to compare the performance of FCC exposed at different locations within a or at another test site. In this study, an analysis of the CoaST Maritime Test Centre (CMTC) has been performed to investigate how geographical orientation and changes in depth influence the biofouling propensity on coated panels. The investigation showed no statistical significance in the biofouling propensity between panels exposed to different geographical orientations at the CMTC. Similarly, no statistical significance was found between panels placed at different depths at the CMTC. If similar reporting was performed at other test sites, a better basis for comparison of FCC worldwide would be obtained, and this could be achieved with a standardized reporting guideline. Note de contenu : - METHOD : CoaST Maritime Test Centre - Test panels - Evaluation method - RESULTS AND DISCUSSION : Biofouling environment at the CMTC - The influence of geographical orientation on the biofouling propensity - The influence of depth on the biofouling propensity - Horizontal setup - Standardized reporting for comparability of FCC within and between test sites - Table 1 : The coverage percentage intervals and the related weighted values for the four biofouling categories - Table 2 : Investigation of the influence of geographical orientation on biofouling growth - Table 3 : The significance of the biofouling deviation between the cartridges fourth and fifth row, due to the difference in depth DOI : https://doi.org/10.1007/s11998-022-00707-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00707-w.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39433 [article]

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Dynamic simulations of a self-polishing antifouling paint exposed to seawater / Søren Kiil in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 929 (06/2002)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 74, N° 929 (06/2002) . - p. 45-54 Titre : Dynamic simulations of a self-polishing antifouling paint exposed to seawater Type de document : texte imprimé Auteurs : Søren Kiil, Auteur ; Kim Dam-Johansen, Auteur ; Claus Erik Weinell ; Michael Pedersen (S.) ; Santiago Arias Codolar Année de publication : 2002 Article en page(s) : p. 45-54 Note générale : Bibliogr. Langues : Américain (ame) Tags : Autopolissage  Protection  antisalissure  Modèle  dynamique  Simulation  numérique  Modélisation  Libération  Biocide  Eau  mer  Navire  Peinture  Matériau  revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A mathematical model for a self-polishing antifouling paint exposed to seawater was extended to handle dynamic simulations. The aim has been to investigate, quantitatively, the transient responses of the paint to changes in seawater temperature, pH, concentration of NaCl, and ship speed. The simulation study revealed that polishing and biocide release rates for a paint present on a ship bottom rarely reach stable conditions, because of the slow response of the paint to changes in temperature and ship speed. It was also found that the paint behavior stabilizes more rapidly from a temperature or speed increase than from temperature or speed reductions. These results are essential for the testing of paints on ships and useful information in the development of novel self-polishing antifouling paints. The modeling approach underlying the simulations can be applied to any type of self-polishing antifouling paint provided that sufficient kinetic, solubility, and diffusivity data are available for the pertinent rate steps influencing the paint behavior. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5646 [article]

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Integration of unmodified kraft lignin powder in waterborne coatings and investigation of antifouling properties / Marcel Butschle in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 993-1003 Titre : Integration of unmodified kraft lignin powder in waterborne coatings and investigation of antifouling properties Type de document : texte imprimé Auteurs : Marcel Butschle, Auteur ; Richard Schlautek, Auteur ; Lisa Kunschert, Auteur ; Markus Schackmann, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur Année de publication : 2024 Article en page(s) : p. 993-1003 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Charges (matériaux) Concentration pigmentaire volumique Formulation (Génie chimique) Lignine La lignine est un des principaux composants du bois, avec la cellulose, l'hémicellulose et des matières extractibles. La lignine est présente principalement dans les plantes vasculaires et dans quelques algues. Ses principales fonctions sont d'apporter de la rigidité, une imperméabilité à l'eau et une grande résistance à la décomposition. Toutes les plantes vasculaires, ligneuses et herbacées, fabriquent de la lignine. Quantitativement, la teneur en lignine est de 3 à 5 % dans les feuilles, 5 à 20 % dans les tiges herbacées, 15 à 35 % dans les tiges ligneuses. Elle est moindre pour les plantes annuelles que pour les vivaces, elle est maximum chez les arbres. La lignine est principalement localisée entre les cellules (voir parois pectocellulosiques), mais on en trouve une quantité significative à l'intérieur même de celles-ci. Bien que la lignine soit un réseau tridimensionnel hydrophobe complexe, l'unité de base se résume essentiellement à une unité de phénylpropane. La lignine est le deuxième biopolymère renouvelable le plus abondant sur la Terre, après la cellulose, et, à elles deux, elles cumulent plus de 70 % de la biomasse totale. C'est pourquoi elle fait l'objet de recherches en vue de valorisations autres que ses utilisations actuelles en bois d'Å“uvre et en combustible. Voie de biosynthèse : La lignine est une molécule dont le précurseur est la phénylalanine. Cet acide aminé va subir une cascade de réactions faisant intervenir une dizaine de familles d'enzymes différentes afin de former des monolignols. Ces enzymes sont : phénylalanine ammonia-lyase (PAL), cinnamate 4-hydroxylase (C4H), 4-coumarate:CoA ligase (4CL), hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyl transferase (HCT), p-coumarate 3-hydroxylase (C3H), caffeoyl-CoA o-methyltransferase (CCoAOMT), cinnamoyl-CoA reductase (CCR), ferrulate 5-hydroxylase (F5H), caffeic acid O-methyltransferase (COMT) et cinnamyl alcohol deshydrogenase (CAD). Dans un certain nombre de cas, des aldéhydes peuvent également être incorporés dans le polymère. Revêtements antisalissures Revêtements en phase aqueuse Salissures biologiques Index. décimale : 667.9 Revêtements et enduits Résumé : Antifouling properties of unmodified kraft lignin for potential use in marine coatings were investigated. The study was based on preliminary findings that pointed toward lignin’s efficacy against seawater organisms during laboratory tests. Coatings were formulated that contained lignin as a filler and had a pigment volume concentration above the critical pigment volume concentration. This ensured direct interaction between lignin and seawater organisms, as the lignin particles remained incompletely wetted by the binder. Moreover, all formulations were waterborne to mitigate the release of volatile organic compounds. Despite the initial promise, the antifouling performance of the formulated lignin coatings during field experiments at the CoaST Maritime Test Center was limited, and the anticipated mechanism must be reconsidered. Additionally, it was found that high lignin concentrations, while facilitating organism interaction, compromised the coating's mechanical properties. Nevertheless, the waterborne coating formulation introduced here might provide a foundation for other researchers to further investigate lignin’s potential as a bio-based pigment or a filler in coatings. Note de contenu : - MATERIALS AND METHODS : Raw materials - Coating formulation - Sample preparation - Coating properties - Antifouling properties - RESULTS AND DISCUSSION : Early fouling screening - Coating formulation - Coating properties - Antifouling performance during field immersion - Table 1 : Coating raw materials for the investigation of antifouling properties of lignin - Table 2 : Slurry formulations - Table 3 : Final PU coating formulations for mechanical testing and fouling control performance - Table 4 : Final EP coating formulations for mechanical testing and fouling control performance - Table 5 : Formulations for rheology measurements - Table 6 : Critical pigment volume concentrations of the used pigments DOI : https://doi.org/10.1007/s11998-023-00867-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00867-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41072 [article]

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Laser diffraction measurements of pigment size distributions of coatings and mill bases: implications of dilution medium and dispersion process parameters / Shicong Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)  

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Marine biofouling resistance rating using image analysis / Morten Pedersen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

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Methanol degradation mechanisms and permeability phenomena in novolac epoxy and polyurethane coatings / Ting Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)  

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On-line, non-Newtonian capillary rheometry for continuous and in-line coatings production / Shicong Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)  

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Parallel measurements and engineering simulations of conversion, shear modulus, and internal stress during ambient curing of a two-component epoxy coating / Qiong Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)  

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Silica aerogel-encapsulated biocide crystals for low-loading antifouling coatings : rheology, water absorption, hardness, and biofouling protection / Tenna Frydenberg in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)  

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Simultaneous tracking of hardness, reactant conversion, solids concentration, and glass transition temperature in thermoset polyurethane coatings / Ting Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

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Towards a better understanding of release / Marcel Butschle in EUROPEAN COATINGS JOURNAL (ECJ), (04/2023)  

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Wet clay adhesion to antistick coatings : effects of binder type and surface roughness / Andrea Fasano in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 1 (01/2020)  

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