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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