MT-PZ is a powder coating primer containing zinc which is designed to give enhanced corrosion protection of mild steel. This duplex system combines cathodic protection and barrier effect. Dedicated to steel protection with a surface pre-treatment obtained by grit/shot blasting. MT-PZ is based on a specific epoxy zinc rich formulation that brings conductivity to enable the cathodic protection. MT- PZ includes a specific anticorrosive function which improves the protection in case of scratch. Qualisteelcoat approval: Base Material: Steel PE-0097 2 coat system – up to C4-H, mechanical pretreatment.
| Kemiallinen tyyppi | Thermosetting epoxy |
| Esiintyminen | Tasoita |
| Gloss level(60°) | 45-65units |
| Väri | Grey (about RAL7012) |
| Recommended Film Thickness (µm) | 70 - 120 um |
| Tiheys (g / cm3) | 2.1 g / cmXNUMX |
| Hakemus | sähköstaattinen |
| varastointi | Under dry, cool (≤ 30°C) conditions |
| varastointiaika | 12monthsbelow25°C |
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.
| Alustan | Mechanical pretreatment | Chemical pretreatment |
| Lievä teräs | Grit Blasting Sa 2.5 in accordance with ISO NF EN 8501-1. Roughness: Rz 35 60 µm / Ra 6-12 µm | Banned |
| Valuteräs | ||
| Electro Zinc steel | Banned | |
| Kuumasinkitty teräs | ||
| Zinc sprayed (gas flame/electrical deposition) |
MT-PZ is suitable for corona electrostatic spraying. Tribo application is not recommended.
| Sovellusasetukset | 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. |
| Suositeltu kalvon paksuus | 70-120 µm A good protection is linked with the recommended film thickness. |
| Kierrätys | 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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