| Titre : |
Isoline concepts to find measurement geometries for effect coatings full gonio colour characterisation |
| Type de document : |
texte imprimé |
| Auteurs : |
Michael Rösler, Auteur ; N. Mezger, Auteur ; R. Dietz, Auteur ; A. Huber, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 48-54 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Chromatographie en phase gazeuse
Colorimétrie
Pigments -- Propriétés optiques
Pigments à effets spéciaux
Réflectance
Spectrométrie de masse
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
The isoline concept - based on simple geometric consideration and the knowledge about the real 3D disorientation distribution of effect pigment platelets - figures out sets of illumination angles φo and detection angles φd' where the internal angle of incidence γ on platelets having a fixed angle of disorientation δ is constant. Therefore, the number and the reflectivity of the pigments illuminated and detected the reflectivity of the pigments illuminated and detected under these conditions should always be the same. The isolines are independent of the type of effect pigment. This behaviour was proven by checking the spectral deviation and the colour differences on isolines measured by GCMS-4 for interference and metallic effect pigment coatings. Within the measurement accuracy limits and the assumptions made for deriving the theoretical isolines, the isoline concept was confirmed.
Further, a geometric-probabilistic model to calculate the overlay structure of platelet effect pigments was developed. Here the focus was taken on the dependence of the optical texture on the PMC, the particle diameter, the thickness and the orientation. |
| Note de contenu : |
- The geometry of effect pigments and its impact on apperance
- The geometry of colour measurement
- The isoline concept |
| En ligne : |
https://drive.google.com/file/d/1gq066Yym28iC1B77tTuCkYfN2fnl16DA/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17495 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 203, N° 4581 (02/2013) . - p. 48-54
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Isoline concepts to find measurement geometries for effect coatings full gonio colour characterisation in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4581 (02/2013)
