Metallische Pigmente sind fein verteilte Metallpulver oder -flocken, die verwendet werden, um Beschichtungen, Druckfarben, Kunststoffen und Dekorationsmaterialien ein metallisches Aussehen, Farbe und funktionale Eigenschaften zu verleihen. Zu den Hauptfamilien metallischer Pigmente gehoeren: Goldbronzepigmente (Kupfer-Zink-Legierungen von Blassgold bis sattem Kupfer je nach Zinkgehalt), Kupferpigmente (tiefroter Kupferton), Aluminiumpigmente (Silber- und glanzende Metalleffekte) und Zinkstaub (Korrosionsschutz-Grundierungsanwendungen). Die Wahl des Pigmenttyps haengt von der gewuenschten Farbe, der Applikationsmethode, der chemischen Kompatibilitaet mit dem Bindemittelsystem und der erforderlichen Bestaendigkeit ab. MEPOSO stellt atomisierte metallische Pigmentpulver in verschiedenen Legierungszusammensetzungen und Korngroessenbereichen fuer Beschichtungs-, Druckfarben- und Dekorativharzanwendungen her.
Particle Size and Its Effect on Visual Appearance
The particle size of metallic pigments is the primary factor controlling visual appearance. Coarser particles (30-75 micrometres) produce a sparkle effect with high brilliance and visible individual reflections - desirable for decorative coatings and specialty printing. Medium particles (10-30 micrometres) create a smooth satin metallic finish suitable for general industrial coatings and graphic arts. Fine particles (below 10 micrometres) produce a smooth, continuous metallic appearance approaching a polished metal surface, used in high-end automotive coatings and electronics uygulamas. The distinction between leafing and non-leafing pigments is also critical: leafing pigments float to the surface of the coating, creating a bright reflective layer, while non-leafing pigments distribute throughout the film, producing a more integrated metallic appearance. MEPOSO produces metallic pigment tozs in multiple size grades to match different uygulama requirements.
Formulation Considerations for Coatings and Inks
Integrating metallic pigments into coating and ink formulations requires attention to several factors. Dispersion stability is essential: metallic particles tend to settle due to high specific gravity, requiring appropriate rheology modifiers and regular agitation. Chemical compatibility must be verified: bakır-based pigments can react with acidic binders or certain solvents, causing discolouration or gas evolution. The pigment-to-binder ratio affects both appearance and film integrity: too much pigment produces a rough, poorly bound film, while too little fails to achieve the desired metallic effect. For water-based systems, surface treatment of the pigment particles may be necessary to prevent oxidation and maintain colour stability. MEPOSO sağlar uygulama guidance on pigment selection, loading levels and compatibility with common binder systems.
MEPOSO Metallic Pigment Powders
MEPOSO S.r.l. manufactures metallic pigment tozs in bakır, bronz (gold) and pirinç alloy compositions. Our pigment-grade tozs are produced by gas atomisation with controlled particle size distribution, consistent alloy composition and batch-to-batch colour reproducibility. Available in standard industrial grades and custom specifications, our pigments serve the coatings, printing ink, decorative resin and plastic industries worldwide. MEPOSO ile iletişime geçin for pigment samples, technical data and formulation support.
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