Epoxy-polyester powder coating MT-APA EL286A/MT- EL286A
Product Description
MT-APA is an epoxy-polyester powder coating primer especially designed for direct application on substrates that are sensitive to out-gassing, such as Hot Dip Galvanized steel, Metal spraying, Zamak, Cast steel, Aluminium, brass etc. MT-APA offers excellent flow, chemical and salt spray resistance, and resistance to mechanical damage. MT-APA is suitable for use as a primer for a variety of liquid topcoats, however it is recommended that pre-qualification tests for intercoat adhesion be carried out prior to use
Powder Properties
| Appearance | Smooth |
| Chemical type | Epoxy-Polyester |
| Color | Grey |
| Recommended Film Thickness (µm) | 50 – 80 µm |
| Density (g/cm3) | 1.68 ± 0.03 g/cm³ |
| Application | Electrostatic |
| Storage | Under dry, cool (≤ 25°C) conditions |
| Shelf life | 24 months below 25ºC |
Pretreatment
For optimum coating performance the following pre-treatment is recommended prior to the application of MT-APA. The pre-treatment should be used in accordance with the supplier’s recommendations.
a) Aluminium Multistage chrome chromate or chrome phosphate
b) Galvanised Steel Multistage zinc phosphate or chromate
c) Steel Multistage zinc or iron phosphate
Application
MT-APA is suitable for corona electrostatic spraying. Tribo application is not recommended.
| Recommended film thickness | 50-80 µm, good protection is linked with the recommended film thickness. |
| Recycling | Unused powder can be reclaimed using suitable equipment and recycled through the coating system, but a minimum of 70% new powder should be used. |
Note: Failure to comply with the recommended curing conditions may affect the adhesion of the topcoat and cause degradation of the system performance properties. Parts coated with MT-APA should not be handled if possible. If handling is unavoidable, clean lint-free gloves must be worn.
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