Amphiphilic marine coating systems of self-stratified PDMS-PEG surfaces with an epoxy-polyurethane matrix / AliReza Rahimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 795-812 Titre : Amphiphilic marine coating systems of self-stratified PDMS-PEG surfaces with an epoxy-polyurethane matrix Type de document : texte imprimé Auteurs : AliReza Rahimi, Auteur ; Morgan Murphy, Auteur ; Kinza Faiyaz, Auteur ; Shane J. Stafslien, Auteur ; Lyndsi J. Vander Wall, Auteur ; Madhura Pade, Auteur ; John A. Finlay, Auteur ; Anthony S. Clare, Auteur ; Dean C. Webster, Auteur Année de publication : 2022 Article en page(s) : p. 795-812 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Carbamate de glycidyle Copolymère silicone-uréthane Epoxydes Essais (technologie) Formulation (Génie chimique) Revêtements antisalissures Revêtements autostratifiants Revêtements organiques Salissures biologiques Statistique Index. décimale : 667.9 Revêtements et enduits Résumé : Marine coatings protect submerged surfaces from the negative effects of biofouling. In this work, we demonstrate a new method to prepare self-stratified, amphiphilic glycidyl-carbamate (GC)-based (epoxy urethane-based) coatings (AmpSiGC coatings) that have fouling-release properties making them suitable for marine use. The prepared coating systems are unique and durable in character as the bulk coating takes advantage of both epoxy and urethane functionalities while the surface is comprised of both hydrophilic and hydrophobic domains, granting it an amphiphilic characteristic. The experimental approach aimed to evaluate several factors that influence coating performance, including molecular weight of poly (ethylene glycol) (PEG) and PDMS moieties, ratio of hydrophobic (PDMS) and hydrophilic (PEG) components in the system, and the effect of different curing agents. The results demonstrated that polymeric chains of 10,000 Mn PDMS and 750 Mn PEG at 10–15 wt.% each offer substantially improved or comparable fouling-release performance in comparison to commercial marine coatings. This paper reports on the facile synthesis and characterization of the GC resin and GC prepolymers using FTIR and epoxy titrations ; surface characterization of the coatings using ATR-FTIR, XPS, and AFM; and fouling-release assessment of the surfaces using laboratory biological assays with the barnacle Amphibalanus amphitrite, the algae Ulva linza and Navicula incerta, and the bacteria Cellulophaga lytica. Several of the AmpSiGC coatings exhibited promising performance, which were better or comparable to the internal and commercial reference coatings. The performance of the systems was dependent on all of the factors considered in this study. Note de contenu : - Materials - Design of experiments - Synthesis of glycidyl-carbamate resin - Synthesis of amphiphilic glycidyl-carbamate prepolymers - Epoxy equivalent weight titrations - Percent solids determination - Fourier transform infrared spectroscopy - Coating formulation and curing - Surface characterization - Biological laboratory assays - Statistical analysis - Table 1 : Coating compositions - Table 2 : Epoxy equivalent weight for GC resin and some prepolymers DOI : https://doi.org/10.1007/s11998-021-00561-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00561-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38072 [article]

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Coatings go to work / Jamil Baghdachi in EUROPEAN COATINGS JOURNAL (ECJ), N° 1 (01/2016)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 1 (01/2016) . - p. 24-28 Titre : Coatings go to work : An overview of today's functional coatings Type de document : texte imprimé Auteurs : Jamil Baghdachi, Auteur Année de publication : 2016 Article en page(s) : p. 24-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Hydrophobie Photochromisme Revêtement auto-nettoyant:Peinture auto-nettoyante Revêtement autoréparant:Peinture autoréparante Revêtements antigel Revêtements autostratifiants:Peinture autostratifiante Surfaces antimicrobiennes Surfaces fonctionnelles Index. décimale : 667.9 Revêtements et enduits Résumé : Coatings can have functionality beyond their protection and decoration of substrates. Functional coatings additionally offer a variety of smart behaviours and values-adding performance to a surface. This overview explains the underlying physical and/or chemical processes for a few key types. Note de contenu : - Science and technology of functional coatings - Antimicrobial coatings - Superhydrophobic, self-cleaning, easy-to-clean, and anti-icing - Self-stratifying coatings - Photochromic coatings - Self-healing and self-repair coatings - Thermochromic coatings En ligne : https://drive.google.com/file/d/1r4pXlUauyWa12Jrklnj5Iwa4zkJ60cwK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25206 [article]

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Designing self-stratify coatings based on epoxy-PU systems containing three pigments / Shahdad Zahedi in SURFACE COATINGS INTERNATIONAL, Vol. 103.5 (09-10/2020)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 103.5 (09-10/2020) . - p. 268-273 Titre : Designing self-stratify coatings based on epoxy-PU systems containing three pigments Type de document : texte imprimé Auteurs : Shahdad Zahedi, Auteur ; Seyed Reza Ghaffarian, Auteur Année de publication : 2020 Article en page(s) : p. 268-273 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Caractérisation Copolymère uréthane époxy Dioxyde de titane Formulation (Génie chimique) Oxyde de fer micacé Pigments Revêtement en phase solvant Revêtements autostratifiants Verre -- Revêtements Zinc Index. décimale : 667.9 Revêtements et enduits Résumé : A self-stratifying coating contains at least two resins of different natures, which spontaneously stratify after application on a substrate. Various self-stratifying systems have been reported in the literature, but self-stratifying coatings containing three pigments have rarely been discussed. In this paper, a series of self-stratifying coatings based on an epoxy-PU system and containing three pigments, i.e. zinc dust, micaceous iron oxide (MIO) and titanium dioxide (TiO2) were prepared and applied on glass plates. Stratification was studied and evaluated by Fourier Transform Infrared Spectroscopy using Attenuated Total Reflectance (FTIR-ATR) on both sides of the films. Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDX) analyses and mappings with line scans from cross-sections of the films were carried out to characterise the degree of stratification and the location of the pigments. The aim of this research is to study the factors that affect stratification and the location of the pigments in self-stratifying coatings containing three pigments, and leading to the design of a three-layered self-stratifying epoxy-PU anti-corrosive coating system. It was found that a higher solid percent of epoxy resin has a positive effect on stratification and pigment location. It was also found that better stratification was obtained by replacing some of the xylene in a formulation with a solvent with a higher evaporation rate (butyl acetate). Note de contenu : - EXPERIMENTAL : Materials - Coatings formulation - RESULTS AND DISCUSSION : FTIR-ATR results - SEM/mapping results - Fig. 2 : SEM/mapping images, F5-F7 formulas - Fig. 3 : Line scans for films of 5, F6 and F7 formulations - Fig. 4 : Liquid formulations F3, F4 and F7 in clear bottles after 72 hours storage - Table 1 : Prepared formulations - Table 2 : Weight percentage of elements in the top and bottom areas in the film cross-sections for F5, F6 and F7 formulations by EDX En ligne : https://drive.google.com/file/d/16cUOIqMPjQJs10ysmgZdKtqQZkXPdmnw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34728 [article]

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Designing self-stratifying coatings through the study of pigment migration / Shahdad Zahedi in SURFACE COATINGS INTERNATIONAL, Vol. 101.6 (12/2018 - 01/2019)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 101.6 (12/2018 - 01/2019) . - p. 288-293 Titre : Designing self-stratifying coatings through the study of pigment migration Type de document : texte imprimé Auteurs : Shahdad Zahedi, Auteur ; Davood Zaarei, Auteur ; Seyed Reza Ghaffarian, Auteur ; Maude Jimenez, Auteur Année de publication : 2018 Article en page(s) : p. 288-293 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Dioxyde de titane Energie de surface Epoxydes Formulation (Génie chimique) Oxyde de fer Pigments inorganiques Revêtements autostratifiants Index. décimale : 667.9 Revêtements et enduits Résumé : Self-stratifying coatings are smart coatings which represent a new generation of surface coatings for industry which offer the advantages of single-coat application, thereby reducing resources and potential pollution when compared to conventinal multi-layer coating systems. In our work, the effect of pigments on stratification was studied. Ten formulations were made based on epoxy and fluorinated vinyl ether incorporation of inorganic pigments containing titanium dioxide and red iron oxide. Evaluations were made by scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX) and mapping from cross-sections through the films. Results demonstrate that the affinity of the pigments for different resins, and also the quality of their dispersion and stabilisation in the initial phase, both play important roles in the stratification phenomena. Note de contenu : - Materials - Formulation and application - Results and discussion : Stratification of clear coatings - Stratification of single-pigment coatings - Stratification of dual-pigment coatings - Table 1 : Prepared formulations - Table 2 : Percentage of elements in top and bottom areas in cross-section of clear coating formulation (Formula 3) by EDX - Table 3 : Percentage of elements in top and bottom areas in cross-section of single-pigment formulations 4, 5, 7 and 8 by EDX - Table 4 : Stratification type by formulation - Table 5 : Percentage of elements in top and bottom areas in cross-section of single-pigment formulations 6, 9 and 10 by EDX - Table 6 : Contact angle measurement and surface energies (polar and dispersive components) of films by using three liquids (water, ethylene glycol and di-iodomethane) - Table 7 : Surface energy relations and stratification conditions - Fig. 1 : SEM and mapping images for SSC clear coating system (formula 3) - Fig. 2 : SEM and mapping images for single-pigment systems (formulations, 4, 5, 7 and 8) - Fig. 3 : SEM and mapping images for dual-pigment systems (formulations 6, 9, and 10) En ligne : https://drive.google.com/file/d/11o-EpvH5VXJK-GS1nC5NArN3pTtgN975/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31651 [article]

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Effects of pigmentation on siloxane-polyurethane coatings and their performance as fouling-release marine coatings / Stacy A. Sommer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 6 (11/2011) . - p. 661-670 Titre : Effects of pigmentation on siloxane-polyurethane coatings and their performance as fouling-release marine coatings Type de document : texte imprimé Auteurs : Stacy A. Sommer, Auteur ; Joseph R. Byrom, Auteur ; Hanna D. Fischer, Auteur ; Rajan B. Bodkhe, Auteur ; Shane J. Stafslien, Auteur ; Justin W. Daniels, Auteur ; Carolyn Yehle, Auteur ; Dean C. Webster, Auteur Année de publication : 2011 Article en page(s) : p. 661-670 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Marines (peinture) Polyuréthanes Revêtements autostratifiants:Peinture autostratifiante Salissures marines Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : Siloxane-polyurethane paints were formulated and characterized for coating properties and performance as fouling-release (FR) marine coatings. Paints were formulated at 20 and 30 pigment volume concentrations with titanium dioxide, and aminopropyl-terminated poly (dimethylsiloxane) (APT-PDMS) loadings were varied from 0 to 30% based on binder mass. The coatings were characterized for water contact angle, surface energy (SE), gloss, and pseudo-barnacle (PB) adhesion. The assessment of the FR performance compared with polyurethane (PU) and silicone standards through the use of laboratory biological assays was also performed. Biofilm retention and adhesion were conducted with the marine bacterium Cellulophaga lytica, and the microalgae diatom Navicula incerta. Live adult barnacle reattachment using Amphibalanus amphitrite was also performed. The pigmented coatings were found to have properties and FR performance similar to those prepared without pigment. However, a higher loading of PDMS was required, in some cases, to obtain the same properties as coatings prepared without pigment. These coatings rely on a self-stratification mechanism to bring the PDMS to the coating surface. The slight reduction in water contact angle (WCA) and increase in pseudobarnacle release force with pigmentation suggests that pigmentation slowed or interfered with the self-stratification mechanism. However, increasing the PDMS loading is an apparent method for overcoming this issue, allowing for coatings having similar properties as those of clear coatings and FR performance similar to those of silicone standard coatings. Note de contenu : - Materials - Acrylic polyol preparation and characterization - APT-PDSM preparation - Rapid GPC - Pigment grind preparation - Pigmented siloxan-polyurethane coating formulation - Siloxane-polyurethane preparation - WCA and SE characterizations - Gloss - Pseudobarnacle (PB) adhesion - Preleaching andleachate toxicity analysis - Cellulophaga lytica biofilm retention and adhesion - Navicula incerta attachment and adhesion - Amphibalanus amphitrite adult barnacle reattachment assay DOI : 10.1007/s11998-011-9340-3 En ligne : http://download.springer.com/static/pdf/657/art%253A10.1007%252Fs11998-011-9340- [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12593 [article]

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Eurocoat 2016 / (AFTPV) Association Française des Techniciens des Peintures et Vernis / Paris : AFTPVA (2016)

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Eurocoat 2018 / Paris : AFTPVA - EUROCOAT (2018) 

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Fluorinated resins in self-stratifying coatings / Chris Carr in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/95 (04/1995)

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Janus particles / Shan Jiang in COATINGS TECH, Vol. 21, N° 1 (01-02/2024)  

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Mechanically enhanced self-stratified acrylic/silicone antifouling coatings / Jingjing Xue in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 212, N° 4674 (04/2022)  

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On the stratification mechanism of self-stratifying epoxy–acrylic coatings / Ali Abbasian in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

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Pigmented silicone/epoxy novel blends for preparation of stratified nontoxic foul release coatings / Sushil S. Pawar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

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Role of curing agents on self-stratification behavior of pigmented epoxy resin-chlorinated rubber blend / T. K. Mahato in PAINTINDIA, Vol. LXIV, N° 11 (11/2014)  

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Self-stratifying coatings / Vladimir V. Verkholantsev in EUROPEAN COATINGS JOURNAL (ECJ), N° 12/00 (12/2000)

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Self-stratifying coatings based on Schiff base epoxy resins / Ewa Langer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)  

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Self-stratifying coatings - A potential smart coating for future / Atul Ahire in PAINTINDIA, Vol. LXXII, N° 11 (11/2022)  

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Self-stratifying coatings - A review / Rantu Bhunia in PAINTINDIA, Vol. LXV, N° 1 (01/2015)  

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Self-stratifying coatings : a review / Shahdad Zahedi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)  

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Study of self-stratifying compositions / Helena Kuczynska in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)  

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Two coats in one / Hongli Wang in EUROPEAN COATINGS JOURNAL (ECJ), N° 12 (12/2017)  

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