RAL1005 honey yellow Polyurethane powder coating for Pipeline corrosion
Polyesters are typically somewhat softer and less abrasion resistant than their polyurethane counterparts. The additional crosslinker inherent in a polyurethane powder formulation is responsible for the added performance. Using the somewhat archaic pencil hardness test, polyesters clock in at H hardness whereas polyurethanes can achieve H to 5H depending upon the specific formulation. The higher hardness products typically sacrifice mechanical flexibility.
DESCRIPTION
1 “Polyurethane powder coating” is a series of polyurethane based powder coating formulated for exterior environment.
2 Offering excellent anti-corrosion and flexibility properties.
3 Excellent smoothness and high gloss
4 Available for a wide range of colors and gloss levels to suit different applications.
Test Item |
Test standard and Method |
Test index |
|
Impact resistance |
GB/T 1732 -1993 |
ISO6272 |
50kg/cm |
Adhension(cross-cut) |
GB/T 9286 - 1998 |
ISO2409 |
Class 0 |
Flexibility |
GB/T 6742-1986 |
ISO1519 |
2mm |
Pencil hardness |
GB/T 6739-1996 |
ISO2815 |
1H-2H |
Cupping test |
GB/T 9753-1988 |
ISO1520 |
6mm |
Salt spray resistance |
GB/T 1771-1991 |
ISO7253 |
>400 Hours |
Heat & humidity resistance |
GB/T 1740-1979 |
ISO6270 |
>500 Hours film gloss slightly lose |
Note: 1. Above test are using 0.30mm thickness degreased, rust removed cold rolling steel plate, film thickness is 60-80um.2. Film performance may slightly decrease with gloss decrease. |
Powder Coating Features:
1. Non-polluted, environment friendly, high efficiency;
2. It can be recycle used and can save resource;
3. Good leveling property;
4. Excellent coating for angle margin;
5. Good adhesion, dispense with first coat;
6. Excellent weather resistance and wearing resistance;
7. Better than epoxy polyester on anti-yellowing
8. Good chemical and solvent resistance;
9. Good physical mechanical properties;
10. Wide range of coating color;
11. No by-products , without bubble and pinhole while curing.