[article]
| Titre : |
A new way to control gloss |
| Type de document : |
texte imprimé |
| Auteurs : |
Jerry Levy, Auteur ; Jon W. Bouchard, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 53-58 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Brillance (optique) -- Mesure
Couches minces
Cuirs et peaux -- Finition
Polymères
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Leather finishing today calls for coatings with high adhesion, abrasion resistance and flexibility. When an extremely low level of gloss is required, the finish is usually loaded with dulling agents, while accepting that this can detract from both mechanical properties and adhesion.
Gloss level control is very important. With the exception of pattents and other very bright leathers where the gloss target is set as high as practicable, ordinary finishes are too bright without at least some dulling. |
| Note de contenu : |
- Low gloss finishes without dulling
- New film-forming polymer chemistry
- Film morphology
- Film formation
- The mechanism of gloss control
- Fig. 1 : Gloss measurement geometry defined angles are measured with respect to the perpendicular
- Fig. 2 : Surface view, conventional low-gloss coating, silica matting agent (x2500 as viewed)
- Fig. 3 : Surface view, conventional low-gloss coating, organic matting agent (x2500 as viewed)
- Fig. 4 : Surface view, film cast from new low-gloss polymer (x1000 as viewed)
- Fig. 5 : Surface view, film cast from new low-gloss polymer (x1000 as viewed)
- Fig. 6 : Surface view, film cast from new low-gloss polymer (x5000 as viewed)
- Fig. 7,8,9 : Cross sections of polymer cast on Leneta Chart and freeze-fractured to reveal cross-section
- Fig. 10 : Schematic comparison refraction : light incident on a spherical surface compared with a smooth, flat surface and the effects of tilting the plane of the coating. Reflections at specular angle (shown as the dotted line) are important only for the flat surface
- Fig. 11 : Multiple ray traces: light incident on sphere with interfaces of air (η1 = 1.0) and polymer (η2 = 1.5)
- Fig. 12 : Plot of reflection off a spherical surface. Imagine a bundle of parallel incident rays coming from the top, striking the spherical surface (dotted arc) as shown and either being refracted into the sphere or reflected off it. Squares represent a plot of calculated percents of incident light reflected. The table lists several of the calculated values plotted in Figure 12 |
| En ligne : |
https://drive.google.com/file/d/1Z6xXbTZIqrLT7lgvCzO9eo5F0Qjbb8mU/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32159 |
in WORLD LEATHER > Vol. 14, N° 4 (06-07/2001) . - p. 53-58
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Ajouter le résultat dans votre panier Affiner la rechercheProblems associated with finishing hydrophobic leather / Jerry Levy in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXX, N° 4 (04/1995)
