Silica encapsulation of aluminium flakes by a new type of sol/gel process provides silver pigments with long-term stability in water-based coatings. This new, heavy metal-free stabilisation technology guarantees gassing stability and optical properties comparable to chromate-passivated pigment types. No degradation under high shear stress can be observed, an important property for circulation lines and pumps of the automotive industry. Finally, the silica-coated pigments show an excellent weather fastness (Florida testing passed) and best adhesion if the pigmented coatings are exposed to humidity tests.
Encapsulated aluminium pigments
Progress in Organic Coatings. An International Journal ; 37 , 3/4 ; 179-183
1999
5 Seiten, 4 Bilder, 3 Tabellen, 4 Quellen
Article (Journal)
English
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