Description
A.General Introductions
It is called climate-resistant powder coating, which is made from carboxyl polyester resin.It is characterized by excellent levelling property, chemical resistance and very strong oil resi-stance and is applicable to painting of metal appearances of cars, motorbikes, oiling machines,agricutural machinery which have the higher requirement of chemical resistance.
B. Product Series
We can produce the product of high gloss (above 80 percents), half gloss (50-80 percents), sub-gloss (30-50 percents), honed(15-30)and the matt(below10%). The gloss can also be controlled by the requirement of consumers.
C. Physical Characteristics of the Powder
Proportion ( 25℃.g/cm3 ): 1.4-1.7
Particle-size distribution: 100 percent lower 100 micron ( it can be adjusted according to particular requirement of coating )
D. Curing Conditions
200℃ ( work piece temperature ), 10 minutes E. Average Percentage of Coverage
9-12 sq.m./ . kg., with a coat thickness of 60 micron ( calculated by 100 percent occupation coefficient for powder coating )
F. Functions of the Coatings
Testing | Testing standard or method | Test rating |
Impact resistance | GB/T 1732-1993 | 50kg.cm |
Cup-drawing test | GB/T 9753-1988 | 8mm |
Adhesive force (drawing grid) |
GB/T 9286-1998 | Grade 0 |
Bending | GB/T 6742-1986 | 2mm |
Pencil hardness | GB/T 6739-1996 | 1H-2H |
Salt spraying test | GB/T 1771-1991 | > 500 hours |
Humid heat test | GB/T 1740-1979 | > 1000 hours |
Heat resistance | 150℃/24 hours(white) |
Excellent gloss retention,aberration ≤0.3-0.4 |
Resistance to climate (accelerated weathering) |
60℃/8 hours UV+50℃/4 hours condensation,cycle 500 hours |
Gloss retention ≥50% color stability:aberration ≤3.5 |
Notes | 1. In the above tests, 0.8 millimeter-thick cold-rolled derusting and degreasing steel sheet are used, and the coat thickness is 50-70 micron. | |
2. The above performance indexes of coat may be changed with the color and reflet. |
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PU Type Powder Coating
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