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Mechanical stability of alkyd emulsions - Part 1 : influence of emulsion droplet size and the emulsifier / Gunilla Östberg in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 832 (05/1994)
[article]
Titre : Mechanical stability of alkyd emulsions - Part 1 : influence of emulsion droplet size and the emulsifier Type de document : texte imprimé Auteurs : Gunilla Östberg, Auteur ; Björn Bergenståhl, Auteur ; Margareta Huldén, Auteur Année de publication : 1994 Article en page(s) : p. 37-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Emulsifiants
Gouttelettes
Particules (matières)
Polyalkydes
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
SurfactantsIndex. décimale : 667.9 Revêtements et enduits Résumé : The limited colloidal stability of alkyd emulsions compared to that of organic solvent-borne alkyd paints is a well-known problem. For environmental reasons, however, the alkyd emulsions have a great advantage since they are waterborne. In this study, the influence of emulsifier and initial droplet size on the mechanical stability of alkyd emulsions was investigated. Anionic emulsifiers have been shown previously to be more effective than nonionic emulsifiers in the formation of alkyd emulsions. This study showed that an anionic emulsifier also gave more stable emulsions at lower concentrations than did the nonionics. If the concentration was increased, emulsions stabilized with a nonionic emulsifier showed the same stability as the one with the anionic emulsifiers. However, too high a concentration of surfactants is undesirable in paints, since it increases the water sensitivity of the paint film. The mechanical stability of emulsions stabilized with anionic emulsions was less sensitive to the initial droplet size than emulsions stabilized with a nonionic emulsifier. Note de contenu : - EMULSION STABILITY : Methods for mechanical stability
- EXPERIMENTAL : Materials - Methods
- RESULTS AND DISCUSSIONS : Influence of initial droplet size - Influence of concentration of emulsifier - Different types of emulsifiersPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18627
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 66, N° 832 (05/1994) . - p. 37-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003466 - Périodique Bibliothèque principale Documentaires Disponible 003479 - Périodique Bibliothèque principale Documentaires Exclu du prêt Mechanical stability of alkyd emulsions - Part 2 : influence of alkyd properties / G. Östberg in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 838 (11/1994)
[article]
Titre : Mechanical stability of alkyd emulsions - Part 2 : influence of alkyd properties Type de document : texte imprimé Auteurs : G. Östberg, Auteur ; Björn Bergenståhl, Auteur Année de publication : 1994 Article en page(s) : p. 37-41 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cisaillement (mécanique)
Emulsifiants
Polyalkydes
Revêtements en phase aqueuse:Peinture en phase aqueuse
Rhéologie
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The development of waterborne alkyd paints based on alkyd emulsions has been stimulated by more stringent health and environmental regulations. In addition, alkyd paints may have better performance in some applications compared to other types of waterborne paints such as latex dispersions. One problem that needs to be overcome is the limited colloidal stability of alkyd emulsions. It is important that the emulsions are not destabilized when exposed to shear forces, such as those produced by pumps used in the paint industry. An alkyd emulsion consists of alkyd oil droplets dispersed in water and stabilized by a surface active agent (emulsifier). Part 1 of this series described the influence of emulsion droplet size, type, and concentration of the emulsifier on the shear stability. The present study is an additional investigation of the influence of the alkyd properties on shear stability. Increasing the acid value of the alkyd increases the stability of emulsions stabilized with nonionic emulsifiers. Emulsions made using alkyds with shorter oil lenghts and higher viscosities were less stable to shear compared to alkyds with higher oil lenghts and lower viscosities. Note de contenu : - Emulsification
- Determination of droplet size
- Mechanical stabilityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18726
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Code-barres Cote Support Localisation Section Disponibilité 003473 - Périodique Bibliothèque principale Documentaires Disponible 003485 - Périodique Bibliothèque principale Documentaires Exclu du prêt Method for measuring water diffusion in a coating applied to a substrate / T. Nguyen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 67, N° 844 (05/1995)
[article]
Titre : Method for measuring water diffusion in a coating applied to a substrate Type de document : texte imprimé Auteurs : T. Nguyen, Auteur ; D. Bentz, Auteur ; E. Byrd, Auteur Année de publication : 1995 Article en page(s) : p. 37-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces
Diffusion (physique)
Epoxydes
Fourier, Spectroscopie infrarouge à transformée de
Perméabilité
Polyalkydes
Réflectance
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : A method based on Fourier transform infrared-multiple internal reflection (FTIR-MIR) spectroscopy was developed for measuring the apparent diffusion coefficient of water in a coating applied to a substrate. The method requires an appliction of a coating of any thickness on an internal reflection element, which serves as the substrate, with the attachment of a water chamber to the coated specimen. Water is introduced to the chamber and FTIR-MIR spectra are collected automatically without disturbing the specimen or the instrument. The amount of water at the coating/substrate interface was determined using a model based on the theory of internal reflection spectroscopy. A mass-time curve for water at the interface is established, which provides the time-lag value, the time required for water to diffuse through the coating film and reach the interface. The diffusion coefficient (D) is then determined by the time-lag equation. For thick coating films (>25 μm), D may be estimated from the FTIR-MIR in situ intensity data only. The sensitivity of FTIR-MIR spectroscopy and the strong FTIR absorption of water molecules make this an ideal method for measuring the diffusivity of liquid water through a coating applied to a substrate. Note de contenu : - BACKGROUND : Water diffusion in coatings - Fourier transform infrared-multiple internal reflection spectroscopy
- RESULTS AND DISCUSSION : Amount of water at the coating/substrate interface - Diffusion coefficient of water in coatings applied to a substratePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18511
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Code-barres Cote Support Localisation Section Disponibilité 003490 - Périodique Bibliothèque principale Documentaires Disponible 003502 - Périodique Bibliothèque principale Documentaires Exclu du prêt Microautoradiographic studies of the penetration of alkyd, alkyd emulsion and linseed oil coatings into wood / Ralph M. Nussbaum in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 878 (03/1998)
[article]
Titre : Microautoradiographic studies of the penetration of alkyd, alkyd emulsion and linseed oil coatings into wood Type de document : texte imprimé Auteurs : Ralph M. Nussbaum, Auteur ; E. John Sutcliffe, Auteur ; Ann-Charlotte Hellgren, Auteur Année de publication : 1998 Article en page(s) : p. 49-57 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements
Conifères
Huile de linL'huile de lin ou "huile de graines de lin" est une huile de couleur jaune d'or, tirée des graines mûres du lin cultivé, pressées à froid et/ou à chaud ; parfois elle est extraite par un solvant, en vue de l'usage industriel ou artistique, principalement comme siccatif, ou huile auto-siccative.
Les utilisations de l'huile de lin dérivent de sa richesse en acides gras polyinsaturés, en particulier en acides linolénique et linoléique, qui lui doivent leur nom.
L'huile de lin polymérise spontanément à l'air, avec une réaction exothermique : un chiffon imbibé d'huile peut ainsi, dans certaines conditions, s'enflammer spontanément.
Pour ses propriétés de polymère, l'huile de lin est employée seule, ou mélangée à d'autres huiles, résines et solvants, et est utilisée en tant que : Imprégnateur et protecteur des bois à l'intérieur comme à l'extérieur : protection contre l'humidité, les champignons et insectes, et contre la poussière par son caractère antistatique, composant de certains vernis de finition, liant de broyage pour la peinture à l'huile, agent plastifiant du mastic de vitrier, agent durcisseur de diverses préparations, agent de cohérence et liant dans la fabrication du linoléum.
Huiles et graisses
Pénétration (physique)
Polyalkydes
Primaire (revêtement)
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : The penetration of wood coating primer products into pine and spruce softwood was evaluated with microautoradiography. 14C-labeled binders of alkyd and linseed oil were synthesized and used in eight different products. The penetration front in wood is uneven due to a heterogeneous structure with different types of wood cells. It was demonstrated that conventional solventborne alkyd primers and waterborne alkyd emulsion primers have similar ability to penetrate into wood. Improved penetration was found for products with lower viscosity, such as an alkyd stain and a linseed oil coating. A priming oil had superior penetration. Generally better penetration was obtained for coatings applied onto sawn and rough surfaces as compared to planed and smooth surfaces. Note de contenu : - EXPERIMENTAL : Radioactivity labeled 80% oil length alkyd resin - Radioactivity labeled linseed oil - Coating formulation - Wood material - Microautoradiography
- RESULTS AND DISCUSSION : Coating viscosity and PVC - Solventborne alkyd vs. waterborne alkyd emulsion - Wood material and wood machiningPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17966
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Code-barres Cote Support Localisation Section Disponibilité 003547 - Périodique Bibliothèque principale Documentaires Disponible Modeling, prediction, and analysis of alkyd enamel coating properties via neural computing / Javier E. Vitela in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 2 (04/2006)
[article]
Titre : Modeling, prediction, and analysis of alkyd enamel coating properties via neural computing Type de document : texte imprimé Auteurs : Javier E. Vitela, Auteur ; Eduardo Nahmad-Achar, Auteur Année de publication : 2006 Article en page(s) : p. 141-149 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Brillance (optique)
Formulation (Génie chimique)
Polyalkydes
Réseaux neuronaux (informatique)
Revêtement émail:Peinture-émail
Revêtements:Peinture
SéchageIndex. décimale : 667.9 Revêtements et enduits Résumé : The use of artificial neural networks (ANNs) in the modeling and prediction ofalkyd enamel coating properties, as well as in the sensitivity analysis that can be performed between the properties and the different paint components, are described. A feedforward neural network with sigmoidal activation functions was used with a conjugate gradient algorithm to recognize the complex input-output relation between the paint properties and the formula components. We restricted the study to only two properties of alkyd enamel paints: gloss and drying time. A database of five different families of alkyd enamel paints, containing the different components of the formulations as well as process information, was used in this study. The results obtained show, within the expected uncertainty tolerance, that predictive power of more than 90% for these two properties can be achieved. A sensitivity analysis was also performed using ANNs, yielding the relative importance of the different components of the formulation on the properties of the enamel coatings, which agrees with experience for gloss but gives mixed results for the drying time (apparently due to the high uncertainties in the measurement of this property). DOI : 10.1007/s11998-006-0017-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-006-0017-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3705
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Code-barres Cote Support Localisation Section Disponibilité 004551 - Périodique Bibliothèque principale Documentaires Disponible Modern bio-based wood coatings - potential for the future / Ewelina Depczynska in SURFACE COATINGS INTERNATIONAL, Vol. 102.2 (04-05/2019)
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PermalinkModified hyperbranched resins : the key technologyfor low VOC architectural trim paints / Petri Mast in DOUBLE LIAISON, N° 560 (12/2007)
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PermalinkA new class of acrylated alkyds / Jamie Dzickowski in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 5 (09/2010)
PermalinkNew development in decorative paint : short wet edge & open time / Ajay A. Patil in PAINTINDIA, Vol. LXVIII, N° 6 (06/2018)
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