Formulation effects on the distribution of pigment particles in paints

摘要: Abstract Modern water-borne paints are widely used in different areas of applications ranging from high-gloss lacquers to flat, scrub-resistant interior paints. From this point view, the pigment volume concentration (PVC) is one key-parameter adjusting desired application properties. In paints, for example, a low PVC required accommodate proper surface roughness achieve high gloss. Consequently, TiO 2 needed obtain good hiding power at same time. Flat nonetheless highly filled due cost reasons preferentially by CaCO 3 and binding capacity binder crucial. work, paint formulations differing PVC, type or dispersing agent were investigated various techniques concerning distribution aggregation particles, e.g. . To get detailed insight into structure liquid corresponding dried films, suitable analytical tools applied characterization. The was analyzed remission light spectroscopy (RLS), disc centrifugation, cryogenic-replication transmission electron microscopy (Cryo-replica TEM) cryogenic-scanning (Cryo-SEM). films examined means atomic force (AFM), TEM RLS. tendency -pigments form aggregates found depend on both: first formulation second employed agent. It shown that only properties combination with common dispersants, it possible well-distributed particles within paint. Correlation properties, gloss blocking microscopic presented.