Advances in emerging hydrogel fouling-release coatings for marine applications / Michael Kio 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. 827-856 Titre : Advances in emerging hydrogel fouling-release coatings for marine applications Type de document : texte imprimé Auteurs : Michael Kio, Auteur ; Jeffery Klauda, Auteur Année de publication : 2024 Article en page(s) : p. 827-856 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coques (architecture navale) Enrobage (technologie) Essais (technologie) hydrocolloïdes hydrocolloïdes -- Synthèse Hydrophilie Hydrophobie Polymères Revêtements antisalissures:Peinture antisalissures Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The accumulation of microorganisms, algae, mussels, and barnacles on the hull of sea vessels leads to biofouling, surface corrosion, and increased drag as the vessel moves through water costing the marine industry around $15 billion/year. Current commercial traditional antifouling coatings suffer from reduced energy efficiency and short lifespan and contain heavy metals that are toxic to marine organisms and humans. The banning of these coatings is due to environmental concerns, and nonbiocidal alternatives such as polymer-based coatings are being sought after. This review demonstrates emerging promises of hydrogel fouling-release coatings (FRCs) in the marine environment that may be effective against a prevalent amount of biofouling agents. The review also highlights the importance of polymer backbone materials with surface wettability characteristics possessing hydrophobic, hydrophilic, and zwitterionic properties and further discusses emerging antifouling techniques, synthesis of hydrogel, swelling behavior of hydrogel, laboratory assays of hydrogel coating, marine field test, and outlook of hydrogel fouling-release (FRCs) coatings. Note de contenu : - INFLUENCE OF COATING PROPERTIES ON FOULING RELEASE : Physiochemical interactions - Mechanical interactions - HYDROGELS : Synthesis of hydrogel - Mechanical properties of hydrogel - Swelling behavior of hydrogel - Elasticity of hydrogel - Hydrogel polymer brushes - Antifouling activities of hydrogel - Antifouling marine field test DOI : https://doi.org/10.1007/s11998-023-00895-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00895-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41062 [article]

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Anchors aweigh / Scott Bader in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 18, N° 3 (03/2011)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 18, N° 3 (03/2011) . - p. 16-18 Titre : Anchors aweigh : A new structural adhesive recently withstood successful trials and may prove to offer major Type de document : texte imprimé Auteurs : Scott Bader, Auteur Année de publication : 2011 Article en page(s) : p. 16-18 Langues : Américain (ame) Catégories : Adhésifs structuraux Assemblages collés Bateaux -- Matériaux Colles:Adhésifs Coques (architecture navale) Polyméthacrylate de méthyle Le poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec. Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Following a simple solvent wipe surface preparation, the engine section was positioned in the hull and a bond line drawn around it. The new Crestabond primerless methyl methacrylate (MMA) structural adhesive from Scott Bader has been successfully tested by Interboat NL in the Netherlands. The adhesive has proven to be a much faster and cleaner method of fitting the GRP engine foundation part in the company’s 5.7-m-long (18-ft) fiberglass sloop, when compared to traditional glass and resin overlaminating. A significant reduction of more than 60% in the overall assembly time was achieved. Shop floor conditions were also improved, as the new adhesive offers reduced styrene exposure. In addition, dust from grinding the hull surface, which normally takes place prior to overlaminating, is eliminated. In terms of surface preparation, Crestabond only requires a wipe-down of all the contact surfaces with a solvent in order to remove contaminants such as grease and dirt. En ligne : http://www.adhesivesmag.com/articles/89731-anchors-aweigh Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25810 [article]

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Behavior of biocide-free foul control paints for ships’ hulls in the immediate proximity of ICCP anodes / F. Castelli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 1 (01/2024) . - p. 383-399 Titre : Behavior of biocide-free foul control paints for ships’ hulls in the immediate proximity of ICCP anodes Type de document : texte imprimé Auteurs : F. Castelli, Auteur ; M. Delucchi, Auteur ; F. Valenza, Auteur ; F. Garaventa, Auteur ; M. Faimali, Auteur ; T. Turturro, Auteur ; A. Benedetti, Auteur Année de publication : 2024 Article en page(s) : p. 383-399 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coques (architecture navale) Fluoropolymères pH Revêtement autopolissant Revêtements antisalissures:Peinture antisalissures Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Impressed current cathodic protection systems are used in combination with organic coatings to prevent corrosion of hulls. The reaction species which are formed in the proximity of the anodes, like chlorinated compounds and acidity, can stress the antifouling paints of the protective coating system. A 3 × 3 matrix was defined to drive the tests aiming to investigate the behavior of novel biocide-free foul release (FR) and self-polishing (SP) paints under this kind of attack. The matrix was featured by different pH and free chlorine (free-Cl) values derived by a galvanostatic test performed at an anodic current density required for the protection of paints roughly at their mid age. Chemical/physical characterization was performed through visual analysis, thickness measurements, profilometry, contact angle measurements, and FTIR-ATR analysis. Both FR and SP paints underwent adhesive failure only in the harshest conditions, pH = 3/free-Cl 3–6 ppm, with unmodified chemistry of the polymers. Both paints exhibited no detachment in milder pH/free-Cl conditions, but thickness and contact angle reduction were observed. Finally, results were discussed inferring possible behaviors of the tested paints in real applications. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS : Determination of the pH/free-Cl conditions - Maintenance of the pH/free-Cl conditions - Evaluation of the physical and chemical properties of the paint systems - SUMMARY OF THE RESULTS - DISCUSSION : Thickness reduction, blistering, and detachment - Contact angle, profilometry - Interpretation of the results in the framework of real applications - Table 1 : Binder and dry film thickness (DFT) of the coats composing the FR and SP coating systems - Table 2 : Sa values by profilometry on SP and FR paints before/after the chemical treatments DOI : https://doi.org/10.1007/s11998-023-00830-2 En ligne : https://drive.google.com/file/d/1qN6gSQmmpiGLNc11MA1UjZXcNbrCWrsG/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40460 [article]

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Delamination of coating from a ship's hull / Cheryl Roberts in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 6 (06/2018)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 6 (06/2018) . - p. 9-12 Titre : Delamination of coating from a ship's hull Type de document : texte imprimé Auteurs : Cheryl Roberts, Auteur Année de publication : 2018 Article en page(s) : p. 9-12 Langues : Anglais (eng) Catégories : Analyse des défaillances (fiabilité) Bateaux -- Revêtements:Bateaux -- Peinture Chimie analytique Coques (architecture navale) Délaminage Revêtements protecteurs -- Détérioration Index. décimale : 667.9 Revêtements et enduits Résumé : Unlike many industrial strucures, ships often contain a variety of multi-layer coating systems on a single vessel, and even on the exterior hull itself, often including a complex sequence of anticorrosive layers followed by antifouling layers. This article focuses on the recoating of ship's exterior hull that resulted in catastrophic failure before the ship was ever returned to service. Note de contenu : - THE BACKGROUND - FIELD INVESTIGATION - LABORATORY INVESTIGATION : Microscopic Examination - Solvent Rub Test - Nitrogen Analysis : Mix Ratio - Recoat Interval Study - Tackiness/Tack-Free Test - Batch Composition Testing - Amine Exudate Analysis Fig. 1 : An illustration of the hull of the ship with the deep-load line (DDL), light-load line (LLL) and specifications for the coating systems applied. Fig. 2 : Lower, middle and upper sampling sites. The black area is the boot top Fig. 3 : Cross section of a paint chip obtained from within 1^(-1/2) feet above the DLL showing the extra red layer sandwiched between the gray layers at 200-times magnification Fig. 4 : Variations of adhesion with length of time between application of red AF and gray AC coating Tab. 1 : Results of Tack-Free Study Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31583 [article]

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Dispensing for Large-Scale Composites / Mac Larsen in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 18, N° 7 (07-2011)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 18, N° 7 (07-2011) . - p. 30-33 Titre : Dispensing for Large-Scale Composites : Advancements in novel pumping technology for paste adhesives are successfully addressing the challenges of large scale composite industrialization Type de document : texte imprimé Auteurs : Mac Larsen, Auteur Année de publication : 2011 Article en page(s) : p. 30-33 Langues : Américain (ame) Catégories : Adhésifs -- Appareils et matériel Adhésifs -- Applications industrielles Assemblages collés Composites -- Collage Coques (architecture navale) Eoliennes Mélanges (chimie) Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The joining together of large structures such as wind turbine blades or ship hulls strictly with adhesives (vs. mechanical fastening techniques) has become a common practice. The current challenge is how to bring the adhesive bonding process into a mainstream operation that increases production throughput while maintaining control and minimizing manufacturing costs. Many factors need to be addressed when scaling up the bonding process, not the least of which is the question of how to reliably dispense thousands of pounds of adhesive each day, with minimal waste. Advancements in novel pumping technology for paste adhesives are successfully addressing the challenges of large-scale industrialization by quickly and reliably meter-mixing significant volumes of reactive two-component adhesives. The reactive mix is then directly dispensed to bond lines hundreds of meters long or manually pumped into buckets for manual application. Note de contenu : - Properties of paste adhesives - Mix ratio - A/B mix quality - Flow rate - Bulk supply - Mobility - Ease of use and maintenance - Increasing industrialization En ligne : http://www.adhesivesmag.com/Articles/Feature_Article/BNP_GUID_9-5-2006_A_1000000 [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11938 [article]

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Effects of biofouling development on drag forces of hull coatings for ocean-going ships : a review / A. Lindholdt in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)  

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Field application of foul-release coating / Sang Ki Chi in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 6 (06/2014)

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Foul release coatings support fuel effiency / Sijmen Visser in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4570 (03/2012)  

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Hull / super structure paints in PAINTINDIA, Vol. LXIV, N° 2 (02/2014)  

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Large-scale additive manufacturing of composite thermoplastics - where are we ? / Ken Susnjara in JEC COMPOSITES MAGAZINE, N° 134 (05-06/2020)

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Luxury motor cruiser sets the standard for marine bonding / Laurent Pourcheron in JEC COMPOSITES MAGAZINE, N° 67 (08-09/2011)

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New D-Iso/NPG gelcoat offers exceptional UV colour stability / Dean Bugg in JEC COMPOSITES MAGAZINE, N° 67 (08-09/2011)

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Redevelopment of medieval leathers for the curragh "Brendan's" transatlantic voyage 1976-77 / H. A. Birkin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)  

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Redevelopment of medieval leathers for the curragh "Brendan's" transatlantic voyage 1976-77 / H. A. Birkin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 62, N° 3 (05-06/1978)  

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Testing for biofilm release as a function of simulated ship speed using a calibrated water jet device / Zachary Shepard in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 5 (09/2024)  

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