powder Coating

Product description

MT-310 is a series of polyester resin based thermo-setting powder coatings, without TGIC with specific antimicrobial activity. The MT-310 resin system is warning label free. The pigments used in the MT-310 series restrict the field of application of this powder coatings class to interior uses. MT-310 AM is a high-quality powder coating designed to meet decorative and functional demands. Additionally, MT-310 AM uses antimicrobial technology to reduce the number of microbes such as bacteria and mold. Test results have proven a reduction of bacteria and mold up to 99.9%.

Powder properties

	Typical value
Chemical Type	Polyester – TGIC Free
Density	1.2 – 1.9 g/cm³, depending on colour and effect
Recommended film thickness	60 – 90µm
Shelf life	12 months below 30 ºC
Storage Conditions	Under dry, cool (≤ 30°C) conditions (open boxes must be resealed)
Curing schedule	8-16 min at 200°C 10-20 min at 180°C 20-40 min at 170°C (at object temperature)

Pre-treatment

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. Iron phosphate and particularly Zinc phosphating of ferrous metals improves corrosion resistance. Aluminium substrates may require a chromate conversion coating.

Application

Powders can be applied by manual or automatic electrostatic spray equipment. A good protection is linked with the recommended film thickness. All powders can show small color differences from batch to batch, this is normal and unavoidable. 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. Products with different codes should not be mixed even if same colour and gloss.

Test conditions

Actual product performance will depend upon the circumstances under which the product is used. Testing has been determined under laboratory conditions using the following application properties and is for guidance only.

Pre-treatment	Zinc Phosphate
Substrate	Polished steel
Curing schedule	12 min at 200°C (object temperature)
Film Thickness	60 – 70µm

Mechanical tests

	Typical value	Method/standard
Adhesion	Class 0	ISO 2409 (2 mm Crosshatch)
Erichsen cupping	Pass 5 mm	ISO 1520
Flexibility	Pass 5 mm	ISO 1519
Hardness	Pass – no penetration to substrate	ISO 1518-1 (2000g)
Impact resistance	≥30 kg.cm	ISO 6272-2 (d/r)

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