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Opacity contribution of rutile at different PVC in emulsion paints / Kaustov Bhttacharya in PAINTINDIA, Vol. L, N° 6 (06/2000)
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Titre : Opacity contribution of rutile at different PVC in emulsion paints Type de document : texte imprimé Auteurs : Kaustov Bhttacharya, Auteur Année de publication : 2000 Article en page(s) : p. 47-52 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Matériau revêtement' 'Peinture eau' émulsion' 'Pigment minéral' 'Titane Oxyde Rutile 'Concentration pigmentaire volumique' 'Propriété optique' Feuil Opacité 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : Present investigation shows the correlation between rutile content and its effect on opacity at different PVC. The amount of rutile present in a paint is not linearly related to opacity. The effect of same amount of rutile at different PVC's also has different levels of contribution to opacity. Above CPVC, presence of microuoids leads to greater scattering of light, which in turn adds to the hiding power of the dried paint film. The present paper also deals with the synergistic effect by incorporation of opaque polymers in conjunction with rutile on opacity. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12745
in PAINTINDIA > Vol. L, N° 6 (06/2000) . - p. 47-52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001254 - Périodique Bibliothèque principale Documentaires Disponible Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion / Jean-Claude Auger in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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Titre : Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion Type de document : texte imprimé Auteurs : Jean-Claude Auger, Auteur ; Brian Stout, Auteur ; Vincent Arnaud Martinez, Auteur Année de publication : 2009 Article en page(s) : p. 89-97 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de titane
Dispersions et suspensions
Pigments -- Propriétés optiques
RevêtementsTags : Optical property Opacity Rutile titanium dioxide pigment Dependent scattering Multiple Spatial dispersion T-matrix formalism Index. décimale : 667.9 Revêtements et enduits Résumé : We propose an original theoretical framework to model the scattering efficiency of white paint films as a function of the volume fraction and spatial state of dispersion of rutile titanium dioxide pigments, taking into account electromagnetic couplings. Numerical calculations are performed using a multiple T matrix formalism on an “elemental” volume extracted from the bulk of the paint and which we model as pigments and fillers in a polymer matrix. Qualitative studies show that, due to the dependent scattering phenomenon, the size of fillers can modulate the magnitude of loss in scattering efficiency by modifying the spatial state of dispersion of the pigments in the polymer matrix. In particular, fillers whose size is comparable to the dimension of the pigments improve the scattering efficiency by impeding crowding. It is also shown that the optical properties of the bulk material at arbitrary concentration can be approximated by extrapolating the optical properties calculated on a limited number of scatterers. DOI : 10.1007/s11998-008-9116-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9116-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4877
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 89-97[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible