MT-PZ is a powder coating primer containing zinc which is designed to give enhanced corrosion protection of blasted mild steel. This duplex system combines cathodic protection and barrier effect. Dedicated to steel protection with a surface pre-treatment obtained by grit/shot, MT-PZ is based on a specific epoxy zinc rich formulation that promotes conductivity to enhance its cathodic protection. MT-PZ includes a specific anticorrosive function which improves protection even in cases of scratching.
| Tipo químico | Thermosetting epoxy |
| Apariencia | Diseño liso |
| Color | Gris |
| Espesor de película recomendado (µm) | 70 - 120 μm |
| Densidad (g / cm3) | 2.9 ± 0.03 g/cm³ |
| Solicitud | Electrostático |
| Almacenaje | Under dry, cool (≤ 30°C) conditions |
| Caducidad | At least 12 months from production date |
Surface preparation depends upon the metal, the type of surface, its conditions and the required performance. See our recommendation for pretreatment to be used with MT-PZ.
| sustrato | pretratamiento mecánico | Chemical pretreatment |
| El acero dulce | Grit Blasting Sa 2.5 in accordance with ISO NF EN 8501-1. Roughness: Rz 35 60 µm / Ra 6-12 µm | prohibido |
| Acero fundido | ||
| Electro Zinc steel | prohibido | |
| Acero galvanizado en caliente | ||
| Zinc sprayed (gas flame/electrical deposition) |
MT-PZ is suitable for corona electrostatic spraying. Tribo application is not recommended.
| Configuración de la aplicación | Fluidizing air pressure: 1.5kg/cm2 initially then 1kg/cm2 Transport air pressure: 0.5 to 0.8 kg/cm Recommended voltage: 65 to 70kV |
| Curing limits | Primer should be cured, or at least gelled, using the recommended curing schedules, before application of the topcoat. The object temperature must not be below 110°C or above 180°C. The primer should be cured in a convection oven, optionally with infra-red heaters, with air temperature not exceeding 180°C. |
| Espesor de película recomendado | 70-120 µm Una buena protección está relacionada con el espesor de película recomendado. |
| Reciclaje | Trials, with suitable recycling equipment, must be carried out before commencing production. Attention should be paid to the ratio of new powder, a minimum of 70% must be used. Gun nozzles must be cleaned every 30 minutes. |
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