Polyurethane powder coatings


General introduction
This type of powder coating is prepared from polyurethane resin . It has excellent leveling property and good resistance to chemicals, elements and oil. It can be applied in the coating on hard conditions, such as the coating for automobiles, motors, oiling machines and agricultural implements and machinery,
Product Series
Products of different gloss are available, high gloss (above 80%), semi gloss(50-80%), flat gloss(20-50%) and no gloss(below 20%). (The gloss can be adjusted according to the customers’ to the demand.)
Physical properties of the powder 
Granularity distribution:100%below 100μm(it can be adapted to the customers’ demand)
Curing Condition
 200℃(workpiece temperature), 10minutes 
Average coating rate
9-12㎡/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
Heat resistance
100℃×24h(white color)
Good gloss retention, Aberration≤1
Resistance to elements(accelerated aging test)
60℃×8h under UV+50℃×4h condensation, the process was cycled for 500h
Gloss retention≤2
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 property index may slightly vary with the variation of the color and gloss .标记机

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