Architectural aluminium powder coating MT-D2525 Gloss/ Satin/ Matt
Product Description
MT-D2525 Gloss/ Satin/ Matt is a range of durable powder coatings specially formulated without of TGIC for use on architectural aluminium components.MT-D2525 Gloss/ Satin/ Matt is designed to offer significantly higher gloss retention and resistance to colour change combined with maximum film integrity to ensure long term cosmetic and functional protection. MT-D2525 Gloss/ Satin/ Matt typically meet the performance requirement of AAMA 2604. and Qualicoat class 2 specifications. All MT-D2525 Gloss/ Satin/ Matt powders are lead-free available in a selected range of color in full gloss such as high gloss, satin and matt finishes.
Powder Properties
| Chemical Type | Polyester |
| Gloss level (60°) | Depend on the colour |
| Particle Size | Suitable for electrostatic spray |
| Specific Gravity | 1.2-1.75 g/cm³ depending on colour and effect |
| Storage | Dry, cool conditions(open boxes must be resealed) |
| Shelf life | 12 months below 30°C |
| Curing schedule
(at object temperature) |
10 minutes at 200°C |
Mechanical Tests
| Flexibility | ISO 1519 (cylindrical Mandrel) or ASTM D522 | Pass 5mm |
| Adhesion | ISO 2409 / ASTM D 3359 (2mm crosshatch) | Pass Gt0 |
| Erichsen cupping | ISO 1520 | Pass ≥3mm |
| Impact resistance | ISO 6272 / ASTM D2784 | Pass 2.5 Joules (reserve & direct) (20InP) |
Pre-treatment
For maximum protection it is essential to pretreat components prior to the application of mt- D2525. Aluminium components should receive a full multi-stage chromate conversion coating or suitable chrome-free pre-treatment or suitable pre-anodising to clean and condition the substrate. Detailed advice should be sought from the pre-treatment supplier. MT-D2525 products may also be used on cast or mild steel. For outdoor use MT-PZ anti-corrosive primer over a correctly prepared substrate is recommended.
Application
MT-D2525 powders can be applied by manual or automatic electrostatic spray equipment. For solid shades, unused powder can be reclaimed up to a maximum of 30% using suitable equipment and recycled through the system. MT-D2525 powders should be applied at minimum 60µm. All powders can show small color differences from batch to batch, this is normal and unavoidable. Applicators and fabricators are advised to use a single batch for parts that will be assembled together. Differences are more likely with special effect powders. Bonded products have better application properties than blended products (more stable) but attention should still be paid to line settings in order to avoid “marble effect”and changes in aspect after recycling. A constant ratio between virgin and recycled powders should be fixed by the coater in order to achieve a consistent effect.Products with different codes should not be mixed even if same colour and gloss.
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