MT-Active is a powder coating primer, totally free from Zinc. It is designed to give enhanced corrosion protection of mild steel and is an epoxy-polyester primer including active anticorrosive pigments. The addition of these pigments provides a steel passivation effect to protect the substrate enhancing the performance when compared to other non-active systems.
| Tipo químico | Thermosetting epoxy-polyester |
| Apariencia | Diseño liso |
| Gloss level (60°) | Unidades 50-60 |
| Color | Gris |
| Espesor de película recomendado (µm) | 60 - 80 μm |
| Densidad (g / cm3) | 1.65 - 1.70 g/cc |
| Solicitud | Electrostático |
| Almacenaje | Under dry, cool (≤ 30°C) conditions |
| Caducidad | At least 12 months from production date |
| Flexibility (Cylindrical Mandrel) | Norma ASTM D522-93A | Pass 3 mm (Primer) Pass 10 mm (System) |
| Adhesión | ASTM D3359-97 (2mm crosshatch) | Class 0 (Primer) Class 0 (System) |
| Ventosas Erichsen | ASTM 643-84 | Pass 5 mm (Primer) Pass 4 mm (System) |
| Impacto | ASTM D2794 | Pass 0.4 kg·m (Primer) Pass 0.3 kg·m (System) |
Surface preparation depends upon the metal, the type of surface, its conditions and the required performance.
| sustrato | pretratamiento mecánico | Chemical pretreatment |
| El acero dulce | Grit Blasting Sa 2.5 in accordance with ISO NF EN 8501-1. Roughness: Rz 42 84 µm / Ra 6-12 µm | Desengrasado y fosfatado (o equivalente) seguido de pasivación, enjuague con agua desmineralizada y secado. |
| Acero fundido | ||
| Electro Zinc steel | Sweep blasting with a maximum zinc layer thickness reduction of 5 to 10 µm depending on the initial zinc thickness | |
| Hot dip galvanized stee | Desengrasado y fosfatado/cromado seguido de pasivación. | |
| flame/electrical deposition) | Grit Blasting Sa 3 in accordance with ISO NF EN 8501-1. Roughness: Rz 42 84 µm / Ra 6-12 µm | prohibido |
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