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ISO 8781-3:1990

Pigments and extenders -- Methods of assessment of dispersion characteristics -- Part 3: Assessment from the change in gloss

Üldinfo
Kehtiv alates 15.11.1990
Tegevusala (ICS grupid)
87.060.10 Pigmendid
Direktiivid või määrused
puuduvad

Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
15.11.1990
Põhitekst
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.
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