Evaluating oil characteristics / Anna Eriksson in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 17, N° 8 (08/2010)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 17, N° 8 (08/2010) . - p. 29-33 Titre : Evaluating oil characteristics Type de document : texte imprimé Auteurs : Anna Eriksson, Auteur ; Anita Neau, Auteur ; Marika Rangstedt, Auteur Année de publication : 2010 Article en page(s) : p. 29-33 Langues : Américain (ame) Catégories : Analyse mécanique dynamique Colles:Adhésifs Essais (technologie) Essais d'adhésion Essais dynamiques Evaluation Huile naphténique Huile paraffinique Huiles minérales -- Analyse Produits pétroliers Viscoélasticité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : When optimizing the performance of a styrenic block copolymer (SBC) pressure-sensitive adhesive (PSA), the focus often lies on the polymer and resin system, not on the oil that is used as a plasticizer. Since many adhesive formulations contain significant amounts of plasticizer, it can be valuable to evaluate the impact that different types of oil have on specific adhesive systems. Mineral oil consists of a mixture of different hydrocarbon molecules with different chemical characteristics and, in addition to the molecular distribution, the oil can be more or less refined. All of these factors influence the performance of the oil in the adhesive. Mineral oil that is used as an adhesive plasticizer originates from crude oil. Crude reserves can be found in a number of locations worldwide, and different crude sources result in different types of plasticizing oil, typically categorized as naphthenic or paraffinic. Depending on the molecular size distribution, the density of crude oil can be characterized from light (0.83 kg/dm3) to heavy (1.04 kg/dm3). Note de contenu : - FIGURES : 1. Viscoelastic properties as a function of temperature - 2. 180° peel adhesion, probe tack and SAFT - 3. Viscoelastic properties of the two prepared adhesives - 4. 180° peel adhesion, probe tack and SAFT of the two prepared adhesives - TABLES : 1. Characteristics of the naphthenic and paraffinic technical white oils - 2. Characteristics of the hydrotreated and solvent-refined naphthenic oils En ligne : http://www.adhesivesmag.com/articles/89495-evaluating-oil-characteristics Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24369 [article]

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Studies on the adsorption of non-ionic surfactants and the dripping behavior of their solutions by the drop volume and maximum bubble pressure technique / U. Teipel in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 37, N° 5/2000 (09-10/2000) . - p. 297-309 Titre : Studies on the adsorption of non-ionic surfactants and the dripping behavior of their solutions by the drop volume and maximum bubble pressure technique Type de document : texte imprimé Auteurs : U. Teipel, Auteur ; Pfzintal, Auteur ; N. Aksel, Auteur Année de publication : 2000 Article en page(s) : p. 297-309 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Alcanes Cinétique chimique Huile paraffinique Huiles et graisses Interfaces gaz-liquide Polyéthylène glycol Solutions aqueuses (chimie) Sorbitol Surfactants Tension superficielle Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : This study shows that the drop volume and maximum bubble pressure technique can be used to determine the adsorption behavior and interfacial adsorption kinetics of surfactants at fluid interfaces. Using these tensiometric methods, it is possible to determine not only the interfacial tension of the pure phases, but also the critical concentration for the formation of micelles (c.m.c.) in a surfactant system, the quasi-static interfacial tension as a function of surfactant concentration, and the maximum adsorption density at the interface. The determination of the dynamic interfacial tension makes it possible to indirectly characterize the kinetics of surfactant adsorption. The time dependence of the interfacial coverage resulting from this adsorption process is well described by two approximation solutions (for short and long adsorption times), with the result that the diffusion coefficients calculated as a function of surfactant concentration using these two methods show good agreement. The droplet formation and dripping behavior of a surfactant solution in a capillary was found to vary significantly according to whether the process occurred in a gaseous or fluid medium. In particular, the formation of satellite droplets was different for the two different media, in terms of both the volume and shape of the satellite droplets. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3234 [article]

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