Reference number
ISO 8781-3:1990
ISO 8781-3:1990
© ISO 2024
International Standard
ISO 8781-3:1990
Pigments and extenders — Methods of assessment of dispersion characteristics — Part 3: Assessment from the change in gloss
Edition 1
1990-11
1990-11
ISO 8781-3:1990
16203
Publicado
(Edición 1, 1990)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
The method is of general use for comparing similar pigments, for example a test pigment against an agreed reference pigment. The pigment is dispersed in stages under specified conditions in an agreed binder system. After each stage, a portion of the mill base is taken and made into a composition that is applied to a substrate and dried or stoved. The specular gloss of each dried film is determined as described in ISO 2813. The gloss values are plotted graphically as a function of the dispersion stage (expressed for example as time, number of revolutions of a muller). From the graph, the dispersion work necessary to obtain an agreed specular reflection value is determined.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1990-11Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 4
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Comité Técnico :ISO/TC 256ICS :87.060.10
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