Low temperature curing powder coatings


General introduction
This type of coating is prepared from special compositions with unique production technics,and it is suitable for the coating of moderate density fibreboard(MDF)substrate. The coating films prepared from this type of coating have excellent mechanical property and indoor/outdoor decorativeness, so the powder coating can be widely used in the surface coating for modern furniture. It is suggested not to use it directly for the coating of outdoor appliances.
Product Series
The products can be turned into sand veined or hammer veined coating layers of varioucolors or with metallic flashing effect.
Physical properties of the powder 
Granularity distribution:100%below 100μm(it can be adapted to the specific demand of coating)
Curing Condition
 120℃ -160℃(surface temperature of the MDF substrate), 20 minutes. Ordinary hot-air cycling oven or drying tunnel can be used for the curing. The coating layer just sprayed had better be put in the infrared oven for the accelerated leveling if condition permitted, and then sent to ordinary ovens. 
Average coating rate
8-9㎡/kg, film thickness:60μm (calculated according to 100% consuming of powder coating)

Coating performance

Testing items
Standards and methods
Inspecting index
Impact strength
GB/T 1732-1993
GB 9753-1988
GB/T 9286-1998
Bending resistance
GB 6742-1986
Pencil hardness
GB/T 6739-1996
Salt mist resistance
GB 1771-1991
Heat & moisr resistance
GB 1740-1989
The tests above used the cold rolling steel plate of 0.8mm thick with preceding standard treatment. The thickness of the coaring layer is 60-80μm
2. the above performance index may slightly vary with the variation of the gloss and artistic effects.

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