Accueil
Détail de l'auteur
Auteur J. Edward Glass |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Parameters influencing the spray behavior of waterborne coatings / Lin-lin Xing in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 890 (03/1999)
[article]
Titre : Parameters influencing the spray behavior of waterborne coatings Type de document : texte imprimé Auteurs : Lin-lin Xing, Auteur ; J. Edward Glass, Auteur ; Raymond H. Fernando, Auteur Année de publication : 1999 Article en page(s) : p. 37-50 Note générale : bibliogr. Langues : Américain (ame) Catégories : Cisaillement (mécanique)
Dépôt par pulvérisation
Gouttelettes
Latex
Revêtements en phase aqueuse:Peinture en phase aqueuse
Rhéologie
Système de pulvérisation (technologie)
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The influence of liquid pressures and orifice diameters on the sprayability of non-Newtonian, waterborne latex coatings, that vary in latex particle size and thickener composition are examined in this study. It is observed that the higher the dynamic uniaxial extensional viscosities (DUEVs, ηe) of the coatings, the larger the Sauter mean diameters (SMDs) of the spray droplets and the broader the droplet size distributions. The shear viscosities at high shear rates and the parameter reflecting shear elasticity, the storage moduli, at low deformation rates do not correlate with the droplet sizes and the distributions observed. In addition to these observations, the Sauter mean diameters of spray droplets decrease with increasing spray pressures and with decreasing orifice diameters; however, with increasing pressures, pulsations in the fluid due to turbulence create areas of high and low droplet density.The relationship of the SMD to orifice diameters using fan nozzles is defined by the relationship:[FORMULA]The experimental results associated with each of these parameters are discussed in the text. Note de contenu : - EXPERIMENTAL SECTION : Formulation of latex coatings - Airless spray process - Measurement of droplet size and their distribution in spray coatings - Rheology measurements
- RESULTS AND DISCUSSION : The effect of orifice diameters on SMDs of spray droplets - Derivation of parameter dependent equation for latex coatings sprayed by airless equipment through fan nozzlesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18025
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 71, N° 890 (03/1999) . - p. 37-50[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 009604 - Périodique Bibliothèque principale Documentaires Exclu du prêt A perspective on the history of and current research in surfactant-modified, water-soluble polymers / J. Edward Glass in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 913 (02/2001)
[article]
Titre : A perspective on the history of and current research in surfactant-modified, water-soluble polymers Type de document : texte imprimé Auteurs : J. Edward Glass, Auteur Année de publication : 2001 Article en page(s) : p. 79-98 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture eau Polymère Solubilité Solution aqueuse Modification chimique Agent surface modifié Adjuvant Epaississant Hydrophobicité Cellulose(hydroxyéthyl) Cellulose(éthyl hydroxyéthyl) Article synthèse Index. décimale : 667.9 Revêtements et enduits Résumé : In this review of surfactant-modified, water soluble polymers, a definition of terms and their historical development is given for each associative polymer type. Studies that have contributed to a fundamental understanding of the structural influences of these associative polymers on the solution behavior of such thickeners are reviewed critically avoiding the sales approach and over exuberance exhibited in so many publications in this area of coatings science. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5690
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 913 (02/2001) . - p. 79-98[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001221 - Périodique Bibliothèque principale Documentaires Disponible Spray applications. Part III. Assessment of viscosities at high shear rates and dynamic uniaxial extensional viscosities on fan nozzle air sprayability / Peter T. Elliott in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)
[article]
Titre : Spray applications. Part III. Assessment of viscosities at high shear rates and dynamic uniaxial extensional viscosities on fan nozzle air sprayability Type de document : texte imprimé Auteurs : Peter T. Elliott, Auteur ; Mark J. Steffenhagen, Auteur ; J. Edward Glass, Auteur Année de publication : 2008 Article en page(s) : p. 341-349 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages polymères
Buse (tuyère)
hydroxyéthylcellulose
Polyéthylène glycol
Polymères hydrosolubles
Pulvérisation
Revêtements en phase aqueuse:Peinture en phase aqueuse
Rhéologie
Tension superficielle
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The relationship between rheological parameters and the atomization and sprayability of a fluid can be quantified through examination of blends of structurally different water-soluble polymers (W-SPs). This was done previously for roll coatings by blending two high-molecular weight W-SPs: one with segmental rigidity, hydroxyethyl cellulose (HEC), that has a greater impact with increasing concentration on shear viscosities than on extensional viscosities and one with segmental flexibility, poly(oxyethylene) (POE), that exhibits a counter effect. Within these blends the molecular weight of the HEC is varied to increase the viscosities at high shear rates. By blending these two types of W-SPs, two sets of HEC and POE blends (high Mv HEC/high Mv POE and low Mv HEC/ high Mv POE) were prepared exhibiting the same low shear rate viscosity but different viscosities at high shear rates (HSVs). Within each blend set, three ratios of HEC:POE were formulated to have essentially identical shear viscosity profiles, surface tensions, and storage (elastic) moduli (G'), but differences in dynamic uniaxial extensional viscosity (DUEV). This allowed the role of HSVs and DUEVs to be separated in their influence on atomization and sprayability. Within a set, variations in the HEC:POE ratio highlight the dominance of DUEVs as the controlling parameter in the sprayability of a formulation. DOI : 10.1007/s11998-007-9050-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9050-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3624
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 4 (12/2007) . - p. 341-349[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 009005 - Périodique Bibliothèque principale Documentaires Disponible Spray applications. Part IV. Compositional influences of HEUR thickeners on the spray and velocity profiles of waterborne latex coatings / Peter T. Elliott in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)
[article]
Titre : Spray applications. Part IV. Compositional influences of HEUR thickeners on the spray and velocity profiles of waterborne latex coatings Type de document : texte imprimé Auteurs : Peter T. Elliott, Auteur ; J. Edward Glass, Auteur ; David M. Mahli, Auteur Année de publication : 2008 Article en page(s) : p. 351-374 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Atomisation
Buse (tuyère)
Epaississants
Formulation (Génie chimique)
Latex
Polyuréthane éthoxylé modifié de façon hydrophobe
Pulvérisation
Revêtements en phase aqueuse:Peinture en phase aqueuse
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, the focus is on the spray behavior of latex coatings thickened with structurally different surfactant-modified, water-soluble polymers (associative thickeners of the hydrophobically modified, ethoxylated urethane [HEUR] type). Particle image velocimetry (PIV) profiles are considered in the perspective of the dynamic uniaxial extensional viscosity (DUEV) of the coatings and an effort to understand the results in terms of the structural aspects of the thickener molecules is undertaken. A high-Mv hydroxyethyl cellulose (HEC) thickened formulation, with a significant DUEV, does not atomize well. Among the HEUR thickeners, the addition of larger hydrophobes in the terminal positions requires less thickener to achieve a 90 KU viscosity and produces lower DUEVs and lower viscosities at high-shear rates. This is necessary to produce formulations with acceptable spray characteristics (i.e., good atomization). The sprayability of these systems is reflected in their velocity profiles and particle size/particle size distributions. Poorer spray characteristics are reflected in ligaments and broad particles size distributions. This study highlights the ability to control the particle size/ size distribution and velocity profiles of coatings formulations through the use of structurally different HEUR associative thickeners. Variations in sprayability among different nozzle geometries are also studied. DOI : 10.1007/s11998-007-9051-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9051-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3625
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 4 (12/2007) . - p. 351-374[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 009005 - Périodique Bibliothèque principale Documentaires Disponible Spray applications : part V. Influence of high solid compositions on coatings sprayability / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 1 (03/2008)
[article]
Titre : Spray applications : part V. Influence of high solid compositions on coatings sprayability Type de document : texte imprimé Auteurs : David M. Mahli, Auteur ; Mark J. Steffenhagen, Auteur ; J. Edward Glass, Auteur Année de publication : 2008 Article en page(s) : p. 33-43 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Haut extrait sec
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Oligomères
Polyacryliques
Pulvérisation
Revêtements:Peinture
VélocimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : The air-spray patterns of high solid coatings were examined using a Particle Image Velocimeter (PIV) to determine the affects of varying the composition (oligomeric acrylic, oligomeric ester, and melamine resin) and molecular weight of high solid resins in coating formulations on their sprayability. High molecular weight tails (e.g., in the acrylic) are known to increase the elasticity of the fluid, and their presence imparted poor spray behavior (i.e., less misting, presence of ligaments, narrower exit fanning, and higher velocities farther from the nozzle) to the high solid coating. The Sauter Mean Diameter (SMD) of the droplets increased with increasing viscosity, which is dependent on weight average molecular weight of the total components of the blends. High solids stored at 60°C resulted in poorer spray with both increasing storage time and increasing levels of catalyst stored for 2 h. The high solid coatings were Newtonian fluids with no elastic functions associated with shear deformations. The elastic behavior associated with the high molecular weight tails in the acrylic oligomers is related, through their similar variation in spray behavior with HEUR thickened latex coatings in Part IV of this series, to dynamic uniaxial extensional viscosities. DOI : 10.1007/s11998-007-9067-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9067-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3612
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 1 (03/2008) . - p. 33-43[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 009979 - Périodique Bibliothèque principale Documentaires Disponible Unifying model for associative thickener influences on waterborne coatings : II. Competitive adsorption of nonionic surfactants and HEUR thickeners on titanium dioxide pretreated with inorganic stabilizers and organic oligomeric dispersants / Ming-Ren Tarng in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 935 (12/2002)
PermalinkUnifying model for understanding HEUR associative thickener influences on waterborne coatings : I. HEUR interactions with a small particle latex / Mao Chen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 867 (04/1997)
PermalinkWaterborne latex coatings of color : I. Component influences on viscosity decreases / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
PermalinkWaterborne latex coatings of color : II. Surfactant influences on color development and viscosity / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
PermalinkWaterborne latex coatings of color. III. Triblock polyether influences on color development and viscosity / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 1 (03/2007)
Permalink