Breaking the ice / Cynthia A. Gosselin in COATINGS TECH, Vol. 21, N° 1 (01-02/2024)  

[article]  inCOATINGS TECH > Vol. 21, N° 1 (01-02/2024) . - p. 38-41 Titre : Breaking the ice : The innovative world of icephobic coatings Type de document : texte imprimé Auteurs : Cynthia A. Gosselin, Auteur Année de publication : 2024 Article en page(s) : p. 38-41 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Glaciophobie Hydrophobie Interfaces (Sciences physiques) Interfaces liquide-liquide Interfaces solide-liquide Revêtements antigel Index. décimale : 667.9 Revêtements et enduits Résumé : Anyone who has had the pleasure of scraping ice off a car windshield, looking nervously at beautiful but deadly ice spears hanging from winter rooftops, or waiting on a slow and interminably long aircraft deicing line at an airport has dreamed of having some sort of coating that would eliminate inconvenient ice and snow accumulation. The desire to triumph over ice and snow accumulation has, in fact, been the focus of significant technical work that has been going on since the 1940s in an attempt to make all kinds of surfaces iceand snowphobic. Icephobicity is defined as the ability of a solid surface to repel ice or prevent ice-film formation due to topographical structures at the ice-surface interface. Ice-repelling characteristics are attributed to the surface structure (sometimes called surface roughness) and/or low surface energy leading to poor ice adhesion allowing for easy removal. Note de contenu : - Fig. 1 : Hydrophobicity as defined by liquid contact angle - Fig. 2 : Schematic of a superhydrophobic surface - Fig. 3 : Ice adhesion depends upon the detachment mode, deformability in shear mode, and hydrophobicity in tensile mode - Fig. 4 : Schematic illustrating water droplet behavior on surfaces with and without a magnetic field applied. The water droplet on the MAGSS surface forms a magnetic liquid-water interface with lower interfacial strength than solid/water interfaces - Fig. 5 : A) Water allowed to freeze on an uncoated copper plate is difficult to remove–even after scraping. (B) Placing a magnet beneath the copper plate and coating the top with ferrofluid delayed water freezing and reduced the ice/surface interfacial strength to the point that ice was easily removed from the surface (or slid off if the panel was tilted even 2.5°) En ligne : https://drive.google.com/file/d/1VXqHT0gHatjPzSHPw82ls8pf2VNWjwZC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40428 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

Collaboration at the intersection of innovation, ecology, and economics / Cynthia A. Gosselin in COATINGS TECH, Vol. 19, N° 5 (05-06/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 5 (05-06/2022) . - p. 46-52 Titre : Collaboration at the intersection of innovation, ecology, and economics Type de document : texte imprimé Auteurs : Cynthia A. Gosselin, Auteur Année de publication : 2022 Article en page(s) : p. 46-52 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biomatériaux Chimie écologique Industrie et éducation Recherche industrielle Revêtements organiques Transition écologique Travail collaboratif La notion de travail collaboratif (Peer production en anglais) désigne un travail qui n'est plus fondé sur l'organisation hiérarchisée traditionnelle, et plus spécifiquement un nouveau mode de travail (éventuellement intégré dans un modèle économique de production) où collaborent de nombreuses personnes grâce aux technologies de l'information et de la communication, notamment les plates-formes internet. Index. décimale : 667.9 Revêtements et enduits Résumé : In the past several years, many in-depth articles have been written across the industry heralding a wide variety of advances suggesting that biobased materials were on the verge of achieving explosive growth. Some of these coatings manufactured from "natural" or ecofriendly sources are commercial and manufacturing success stories. Yet, many other developments and advancements are still waiting for the right resin, application, or manufacturing opportunity to manifest itself. In 2019, an in-depth look at the role that academia plays in successfully making coatings “benign by design” hinted that success in mass utilization of biobased coatings must include a several pronged industry-wide approach. Following up on those observations, this article further examines today’s biobased coatings world from the perspective of sustainability, standardization and industry/government/university collaboration as a basis for progress moving forward. Note de contenu : - The coatings industry sustainability challenge - Industry solutions : standardized metrics for biobased materials - Industry solutions-collaboration - Research and development advances - The next frontier - Table 1 : Examples of biobased building blocks for resin synthesis - Table 2 : BioPreffered coatings categories - Fig. 1 : Chemical structures developed for biobased amines, glycerol-based carbonates and fully biobased polyhydroxyurethanes - Fig. 2 : Schematic of the SUBSBINCO alliance - Fig. 3 : Schematic of a 2-stage CDI crosslinking for 2K systems En ligne : https://drive.google.com/file/d/1MGTDeyk0Y-jMLaKdWlNjQY8aYCrmVVgq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37864 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23507	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Exploring and comparing factory-applied and filed-applied coatings / Cynthia A. Gosselin in COATINGS TECH, Vol. 19, N° 3 (03/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 3 (03/2022) . - p. 56-63 Titre : Exploring and comparing factory-applied and filed-applied coatings Type de document : texte imprimé Auteurs : Cynthia A. Gosselin, Auteur Année de publication : 2022 Article en page(s) : p. 56-63 Note générale : Bibliogr. Langues : Américain (ame) 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. Anticorrosion Coil coatings Métaux -- Revêtements protecteurs Revêtements en bâtiment:Peinture en bâtiment Revêtements:Peinture Spécifications Index. décimale : 667.9 Revêtements et enduits Résumé : Full disclosure : My involvement in the coatings industry centers around the field of prepainted metals. These factory-applied coatings were always fascinating to me because metal coils of all types of substrate pedigrees could be unwound onto a paint line and all the processes needed for painting completed in a matter of minutes. These processes went all the way from cleaning the surface to curing the paint, resulting in pristine coils waiting to be formed into parts for almost every market. Therefore, for purposes of this article, “factory applied” is defined as painted before forming, or prepainted. Conversely, "field-applied" refers to painting after forming-regardless of the application method or painting location. Factory-applied painting was very different from what some call “the traditional” method of applying coatings, which involves forming the parts, putting them together, and then cleaning and painting the end product. This method of painting after parts are formed could be done in an immersion or spray painting section of a facility, outsourced to another company, or painted on location during construction. Note de contenu : - Prepaint coatings attributes - The cut edge question - Building and construction - Test and verification - Environmental focus - Fig. 1 : Coil paint line schematic of a typical coil coating line. This diagram is for two layers of paint application ; some can apply three layers in one pass through the line - Fig. 2 : Schematic for a paint line coating formed and extruded products - Fig. 3 : Schematic illustration of a metallic coated substrate painted with a conversion coating (chemical pretreatment), primer and topcoat during the coil coating process - Fig. 4 : Schematic illustration of an aluminum substrate painted on a coil paint line. In this illustration, a conversion coating, primer, topcoat, and removable protective layer are applied - Fig. 5 : Comparison of cut edge corrosion performance of prepainted and postpainted hot-dip galvanized steel after 68 months of exposure at Daytona Beach - Table 1 : Testing criteria for AAMA specifications for architectural coating En ligne : https://drive.google.com/file/d/1iBPNmo5DArvsX9H1nCb_J7lqbPucNNsx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37608 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23409	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Meeting the additive challenge / Cynthia A. Gosselin in COATINGS TECH, Vol. 19, N° 8 (10/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 8 (10/2022) . - p. 34-42 Titre : Meeting the additive challenge Type de document : texte imprimé Auteurs : Cynthia A. Gosselin, Auteur Année de publication : 2022 Article en page(s) : p. 34-42 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Revêtements Matériaux -- Propriétés fonctionnelles Matériaux céramiques Microsphères Polymères Revêtements -- Additifs Thermoplastiques Une matière thermoplastique désigne une matière qui se ramollit (parfois on observe une fusion franche) d'une façon répétée lorsqu'elle est chauffée au-dessus d'une certaine température, mais qui, au-dessous, redevient dure. Une telle matière conservera donc toujours de manière réversible sa thermoplasticité initiale. Cette qualité rend le matériau thermoplastique potentiellement recyclable (après broyage). Cela implique que la matière ramollie ne soit pas thermiquement dégradée et que les contraintes mécaniques de cisaillement introduites par un procédé de mise en forme ne modifient pas la structure moléculaire. Toiture -- Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : While researching the world of paint and coatings additives for what was new and novel, an article written in June 2020 caught my attention. It was an in-depth analysis of the myriad of additives that are ubiquitous in paints, coatings, and adhesives. Composing only 4% of a coating, chemical additives are instrumental to coatings manufacturing, shelf-life stability, successful application onto substrates, film formation, and ultimately, appearance, performance, and durability. Ironically, this seemingly endless array of additives is the smallest of the global raw material categories, as defined by World Coatings Council data, representing only 0.5% of total usage volume under the anonymous category of “Other.” More importantly, consolidation of raw materials and coatings companies, coupled with environmental constraints, has led to decreased availability of “preferred tried-and-true” raw materials. This has forced formulators to embark on the uncomfortable task of extracting multifunctional properties from the remaining additives. That article ended with the observation that there was “plenty of room for innovative thinking, by both the additive producers and the coatings formulators, with regard to the subject of polyfunctional additives for paints and coatings. The challenge is here . . . and the time to accept it is now.” That last sentence challenging the status quo shouted that another treatise governing the myriad of chemical paint additives would be redundant at best. The academic literature and trade publications contain everything that is currently known about traditional additives for paints and coatings. Rather, a different analytical approach to examining the world of additives would be more interesting and perhaps a small step forward to "accepting the challenge". This musing led to the obvious question: “If not wetting/dispersing agents, rheological modifiers, foam control, surface modifiers, flow and leveling agents, catalysts, driers, adhesion promoters, biocides, stabilizers, plasticizers, et al., then what ?” After all, Robert Ruckle, global marketing and sales director of Siltech Corporation, likened additives to the “flavors and spices” of a coating by comparing the plethora of choices to a “secret chili recipe". Chili, like paint, derives signature characteristics from the special blend of secret additives. Clearly, another path of examination would be required. Note de contenu : - Commercial applications - Microsphere additives for coatings and adhesives applications - Hollow glass microspheres - Solid-glass microspheres - Automotive applications - Thermoplastic microspheres - Cool-roof coating applications : Ceramic microspheres - More polyfunctional microsphere applications - Multifunctional polymeric microspheres - Final thoughts En ligne : https://drive.google.com/file/d/1mkT2orcIJow-Evyja9W4gEJSVxytQ5JD/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38295 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23674	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Metallic pearlescent pigments for powder coatings / Cynthia A. Gosselin in COATINGS TECH, Vol. 19, N° 7 (08-09/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 7 (08-09/2022) . - p. 54-60 Titre : Metallic pearlescent pigments for powder coatings Type de document : texte imprimé Auteurs : Cynthia A. Gosselin, Auteur Année de publication : 2022 Article en page(s) : p. 54-60 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorption Pigments à effets métalliques Pigments à effets spéciaux Pigments nacrés Revêtements poudre Index. décimale : 667.9 Revêtements et enduits Résumé : Color has a way of creating impact and enhancing spaces and objects. There is evidence all around us to suggest that people are drawn to colorful, shiny things. While color perceptions are subjective and deeply personal, there are some color and gloss effects that have universal meaning. Perhaps it is because many cultures have come to associate gloss with wealth, luxury, and beauty. Luminosity, iridescence, and holographic effects are a few of the ways that the love for metallic and pearlescent finishes has evolved. These additives enhance color by adding shimmer and brilliance, providing contrast and metamerism for the entire color palette. New technologies are making strong statements in all aspects of coatings and design, allowing colors to appear and disappear in light in a kaleidoscope of color displays and illumination across the entire color spectrum. The luminosity of metallic and pearlescent finishes stands out, immediately grabbing our attention. Specialized metallic and pearlescent pigments have been developed that allow coated surfaces to exhibit a more glamorous appearance, with luster and brilliance that sets them apart from finishes produced by using conventional pigments. Appliances, vehicles, cosmetics, printing inks, packaging, soaps, and even food and beverages are a few of the markets that have taken advantage of these additives to project beauty and command attention in a crowded world. Note de contenu : - Absorption pigments - Metallic effect pigments - Pearlescent pigments - Glamorizing power coatings with pearlescent pigments - Artists and diyers - Table 1 : The effect of particle-size distribution on pearlescent appearance - Fig. 1 : Diagram depicting the optical behavior of pearlescent pigments made of a substrate and high-refractive coating - Fig. 2 : The effect of particle size on coverage and appearance - Fig. 3 : Schematics of non-leafing (a) and leafing (b) pigment orientations in powder coatings - Fig. 4 : Comparison of the three methods of manufacturing metallic and pearlescent powder coatings - Fig. 5 : Palette of brilliant pearlescent powder coatings offered today En ligne : https://drive.google.com/file/d/1_SFSn199iTb1nMhaB28Fc3lVAjCTsidn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38066 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23604	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The history and benefits of antimicrobial coatings / Cynthia A. Gosselin in COATINGS TECH, Vol. 18, N° 10 (10/2021)  

Permalink

The promise of click chemistry / Cynthia A. Gosselin in COATINGS TECH, Vol. 20, N° 2 (03-04/2023)  

Permalink

The two pillars of surface preparation / Cynthia A. Gosselin in COATINGS TECH, Vol. 19, N° 4 (04/2022)  

Permalink

---

1 (1 - 8 / 8)