Polyester based powder coating MT-MA220G White

Product Description

MT-MA220G is a polyester based powder coating, formulated without TGIC and is designed for exterior exposure offering excellent light and weather resistance from a single coat finish.

Powder Properties

Chemical type	Polyester TGIC-free
Appearance	Smooth Matt
Particle Size	Suitable for electrostatic spray
Specific gravity	1.50 ± 0.05 g/cm³
Film Thickness	75 – 100 microns
Coverage	8.9 ㎡/kg @ 75 microns
Storage	Dry cool conditions below 25°C (open boxes must be resealed)
Shelf life	12 months
Stoving schedule (object temperature)	20 – 25 minutes @ 175°C 15 – 20 minutes @ 190°C 10 – 15 minutes @ 205°C

Test Conditions

The results shown below are based on mechanical and chemical tests which (unless otherwise indicated) have been carried out under laboratory conditions and are given for guidance only. Actual product performance will depend upon the circumstances under which the product is used.

Substrate	Cold Rolled Steel
Pretreatment	B1000 Iron phosphate
Film Thickness	75 – 100 microns
Stoving Schedule	10 minutes at 205°C

Mechanical Tests

	test	results
Flexibility	ASTM D522	3mm
Adhesion	ASTM D3359	100%
Impact (direct	ASTM D2794	10/5 kgcm
Gloss(@60°）	ISO 2813	4-8%
Reflectance Class	DIN EN 16268	A

Pre-treatment

Steel surfaces to be coated must be clean and free from grease, mill scale and rust. For maximum protection, it is essential to pre-treat components prior to the application of MT-MA220G. Iron phosphate and zinc phosphate pre-treatment of ferrous substrates improve corrosion resistance. Aluminium substrates may require a chromate conversion coating.

Application

MT-MA220G can be applied using manual or automatic electrostatic spray equipment. It is recommended, that for consistent application and appearance, the product be fluidized during application. Unused powder can be reclaimed using suitable equipment and recycled through the coating system.

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