Architectural aluminum powder coating MT-D35
Product Description
MT-D35 is a series of durable powder coatings specially formulated TGIC- free for the use on architectural aluminum which conforms to the performance requirements of GB5237.4 specification. MT-D35 is designed to offer significantly high gloss retention and resistance to color change combined with maximum film integrity to ensure long term cosmetic and functional protection.
MT-D35 powder coatings are available in a selected range of colors including pearlescent effects in gloss, satin and matte finishes. Fine and coarse textured are also available.
Powder Properties
| Chemical Type | Polyester |
| Appearance | Smooth |
| Particle Size | Suitable for electrostatic spray |
| Specific Gravity | 1.3 – 1.7 g/cm³ |
| Gloss | >85% (depending on color) |
| Storage | Dry, cool conditions (open boxes must be resealed) |
| Shelf Life | 12 months below 25°C peak temperature
6 months below 30°C peak temperature |
| Stoving Conditions
(at object temperature) |
10 minutes at 200°C
Failure to observe the curing conditions may cause differences in color, gloss, and/or the deterioration of the coating properties. |
Mechanical Tests
| Adhesion | ASTM D3359 | Pass Gt0 |
| Erichsen cupping | GB/T 9753 / ISO1520 | Pass, 3 mm no crack or detachment of film |
| Impact resistance | ASTM D2794 | Pass, 30 InP |
| Bend Test | ASTM D522 | Pass, 3 mm no crack |
Pre-treatment
For maximum protection it is essential to pretreat components prior to the application of MT- D35. Aluminium components should receive the following pre-treatment in accordance of supplier’s recommendation.
Substrate
Aluminum – Multi-stage chrome chromate or chrome phosphate.
Galvanised Steel – Multi-stage zinc phosphate or chromate.
Steel – Multi-stage zinc or iron phosphate.
Application
MT-D35 powders can be applied by manual or automatic electrostatic spray equipment. It is recommended that for consistent application and appearance product be fluidized during application. Unused powder can be reclaimed using suitable equipment and recycled through the coating system.
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