Name: Modified Zinc Phosphate Anti-Corrosion MZP-100
Brand: Coatingsink
SKU: modified-zinc-phosphate-mzp
Availability: InStock

Question 1

How does MZP-100 differ from standard zinc phosphate in anticorrosion performance?

Accepted Answer

MZP-100 incorporates organic corrosion inhibitors co-precipitated within the zinc phosphate lattice, reducing zinc ion leaching by approximately 40–60% compared to standard Zn₃(PO₄)₂. This lowers ecotoxicity risk while maintaining equivalent barrier performance in neutral salt spray (NSS) testing per ASTM B117. The organic moieties also improve compatibility with waterborne acrylic and alkyd binder systems.

Question 2

What PVC loading is recommended for waterborne metal primers?

Accepted Answer

A pigment volume concentration (PVC) of 5–15% is recommended depending on binder type and target dry film build. At 10% PVC in a waterborne epoxy primer at 50 μm DFT, MZP-100 typically achieves ≥500 h NSS per ISO 9227. Exceeding 20% PVC risks compromising film integrity and adhesion, so critical PVC calculations should guide final formulation.

Question 3

Can MZP-100 be combined with other anticorrosion pigments in a mixed system?

Accepted Answer

Yes. MZP-100 synergizes well with barrier pigments such as lamellar micaceous iron oxide or aluminium flakes. It is also compatible with calcium ion exchange silica for enhanced cathodic protection. Avoid co-formulating with strongly alkaline pigments (slurry pH > 10), as this can degrade the organic inhibitor component and reduce its contribution to passivation.

Zn Content	28–35%
D50 Particle Size	3–6 μm
Moisture (ISO 787-2)	≤1.0%
pH (10% aqueous slurry)	6.5–7.5
Oil Absorption (ISO 787-5)	25–35 g/100g

Modified Zinc Phosphate Anti-Corrosion MZP-100

Specifications

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