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Drawing a cloak of invisibility over ships in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4639 (03/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 19-20 Titre : Drawing a cloak of invisibility over ships Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 19-20 Langues : Anglais (eng) Catégories : Marines (peinture) Revêtements antisalissures:Peinture antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : In a double benefit for the global economy and world climate, Evonik plans to make ship hulls invisible to micro-organisms and so to protect them against biofilms, algae, and bivalves. Growths of this kind, referred to as biofouling, push up fuel consumption in shipping and, thus also CO2 emissions on the world's oceans. The International Maritime Organization estimates that the annual costs caused by biofouling lie in the billion-dollar range. Evonik is working on a solution to the problem in the form of 3 new eco-friendly coating that counteracts biofouling. The coating tricks micro-organisms into perceiving plain water in front of them, rather than the ship's hull ; as a result they often make no attempt to settle on the hull. Biofouling has long been a problem for shipping companies the world over : organisms settle on the ship's walls, changing the smooth surfaces into a rough and ragged shell. This increases frictional resistance in the water, so that biofouling slows down ships. These thon need more energy to maintain their speed, which is bad news for bath fuel costs and the environment. Marine transport accounts far about 90% of global freight forwarding. Note de contenu : - One of the last unsolved problems in the industry - Confusing the organisms - FIGURES : The hybrid system acts as a cloak of invisibility - Antifouling protection combined with an easy-to-clean surface - Observation of test panels following a cycle of 35 days of growth and seven days of rotation (1-28 knots), shows outstanding efficiency - Powerful antifouling effect demonstrated - Table : Impact of biofouling on the global merchant fleet En ligne : https://drive.google.com/file/d/10l1_iVbAgVLruaOu0iQ48i22tzLBD74o/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30535 [article]

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Sivate enhanced amino functional silane / Susan H. Tilford in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4639 (03/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 26-27 Titre : Sivate enhanced amino functional silane Type de document : texte imprimé Auteurs : Susan H. Tilford, Auteur ; Barry Arkles, Auteur ; Jonathan Goff, Auteur Année de publication : 2018 Article en page(s) : p. 26-27 Langues : Anglais (eng) Catégories : Adhésifs -- Additifs Aminopropyltriethoxysilane Réaction de couplage Revêtements -- Additifs Spectroscopie d'impédance électrochimique Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The authors discusses the company's first offering in its new production line of Sivate enhances silanes. One of the most widely used silane coupling agents is 3-Aminopropyltriethoxysilane (1). it is used in industrial applications, for example coatings and composites, to treat siliceous and other inorganic oxide (aluminium, titanium, etc) surfaces and microparticles for improving the adhesion and mechanical strength of phenolic, epoxy, urethane, polyamide, urea-forrnaldehyde and polycarbonate formulations. In advanced technology applications, particularly diagnostics, it is employed to immobilise antibodies, enzymes and DNA. Aminopropyltriethoxysilane is often referred to by the abbreviations APTES, AMEO, A-1100 or GAPS. The well-recognised commercial success of this technology has stimulated interest in further extending the property enhancement, particularly life-time, for more demanding applications. Note de contenu : - FIGURES : 1. Sivate T% E610, a proprietary blend of silane 1, 2 and 3 - 2. Surface modification using conventional silane coupling agents - TABLES : 1. Electrochemical impedance spectroscopy (EIS) of silane coatings on cold-rolled steel - 2. Relative flexural strength of epoxy resin with silane treated fused silica filler (85°C/85% RHI) En ligne : https://drive.google.com/file/d/1muXjzWyQYvLbW0XB5LPbZuTfmg_AIOnm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30536 [article]

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The impact of temperature on formulation stability of paints and coatings / Darrell Bancarz in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4639 (03/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 37-38 Titre : The impact of temperature on formulation stability of paints and coatings Type de document : texte imprimé Auteurs : Darrell Bancarz, Auteur Année de publication : 2018 Article en page(s) : p. 37-38 Langues : Anglais (eng) Catégories : Dispersions et suspensions Essais (technologie) Formulation (génie chimique) -- Stabilité Revêtements -- Effets de la température:Peinture -- Effets de la température Index. décimale : 667.9 Revêtements et enduits Résumé : Formulation development is a critical activity for many industries, particularly paints and coatings. Achieving the correct formulation is imperative, due to the high lever of commercial value attached to the formulated products market. Stability has a direct impact on consistency, performance and shelf-life, playing an integral role in the development process. Therefore, gaining insight into methods that help to improve formulation stability can be highly beneficial. Indeed, in the UK alone, sales of formulated products amount to some £180bn/yr. This means that getting formulation 'right' is an important goal, with considerable value attached to it. Stability is a crucial attribute for many products with a direct impact on performance, shelf-life, kerb appeal and ultimately, worth. A systematic approach to understanding and developing stability can therefore, be extremely helpful in improving success in long-term stability trials and accelerating formulation. In this article, we examine how these methods can be exploited to develop stable suspensions, looking in particular at the impact of temperature on stability in paints and coatings. Note de contenu : - The importance of stability - Effect of temperature on stability - Stability testing using DLS - The influence of pH, ionic strength and component concentration - The commercial value - Fig. 1. Size data for the #305 sample, measured at 80°C, shows that over time, aggregationoccurs, while #903 remains stable - Fig. 2. Schematic showing the key components of a DLS system using non-invasive back scattler (NIBS) optics En ligne : https://drive.google.com/file/d/1wwtly17A273iYo78eMibURVuVHwMrNAy/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30537 [article]

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Challenging the performance myth of inorganic zinc silicates / Oriol Osso in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4639 (03/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 39-40 Titre : Challenging the performance myth of inorganic zinc silicates Type de document : texte imprimé Auteurs : Oriol Osso, Auteur Année de publication : 2018 Article en page(s) : p. 39-40 Langues : Anglais (eng) Catégories : Adhésion Anticorrosifs Anticorrosion Microsphères Primaire (revêtement) Revêtements -- Propriétés mécaniques Verre Zinc Index. décimale : 667.9 Revêtements et enduits Résumé : Researchers at Hempel have developed an innovative, organic zinc-rich primer coating technology called Avantguard. It uses a combination of zinc, hollow glass spheres and a proprietary activator to provide superior cathodic protection (CP) with greatly improved mechanical properties (crack resistance) and adhesion. This technology activates the zinc so that it can be fully utilised to act as an anode. The use of glass spheres enhances coating adhesion and mechanical properties. The unique corrosion by product of the activated zinc has a self-healing effect on the coating. The glass spheres block micro-cracks and also create an inhibitor effect by collecting insoluble corrosion products on their surfaces and trapping these species so they don't reach the surface of the steel. Note de contenu : - Organic vs inorganic zinc rich primers - Hempel's avantguard technology - The new Hempadur Avantguard 860 - Fig. 1. SEM images show the self-healing characteristic of the activated zinc-rich epoxy primer - Fig. 2. An SEM image of the activated zinc-rich primer cross section shows glass spheres blocking a micro-crack - Fig. 3. EDS results show zinc salts around a glass sphere and the presence of chlorine atoms in the zinc salts - Fig. 3. En ligne : https://drive.google.com/file/d/1B1oDKlbF4BeA7vFiR-uoDpiLxXd1K9DT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30538 [article]

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