Surface Coating | Polyester Coating |
Aluminum Alloy | AA1100, AA3003 |
Aluminum Skin | 0.10mm,0.12mm,0.15mm,0.18mm,0.21mm,0.25mm,0.30mm |
Panel Thickness | 2mm,3mm,4mm,5mm |
Core Material | Non-toxic low density polyethylene |
Panel Width | 1000mm,1220mm,1250mm,1500, |
Panel Length | 2440mm,3050mm,4000mm,5000mm |
Back Coat | PE coating, Primer Coating ,Mill finish |
Panel Width | ±2mm |
Panel Length | ±3mm |
Panel Thickness | ±0.2mm |
Panel Diagonal | ≤ 5mm |
Aluminum layer thick ness | ±0.02mm |
Description | Test standard | Polyester |
Coating Thickness ( μm ) | Polyester paint >=16 μm | 16 μm to 18 μm |
Coating flexibility (T-bend) | Polyester paint ≤ 3T | ≤ 3T |
Color different | ΔE <= 2.0 (follow color sample) | ΔE <= 2.0 |
Pencil hardness | >= HB | >= 2H |
Chemical resistance | 2%HCI or 2%NaOH test in 24 hours -No change | No change |
Coating adhesion | >= 1grade for 10810mm2 gridding test | 1grade |
Resist solvent | 100 times without change | No change |
Boiling water resistance | 2 hours without change | No change |
Peeling strength/stripping strength |
Average
>=
5N/mm of 180oc peel off
for panel with 0.21mm alu.skin |
5N/mm |
Impact test for paint | 20KG.cm impact-paint no split for panel | No split |
Abrasion resistance (L/Mil) | NIL | NIL |
Temperature resistance |
-40
ºC
to +80
ºC
temperature without
change of color difference and paint peel off, peeling strength average dropprate <= 10% |
Change of glossy only, no paint |
Peel off | ||
Coefficient of linear Thermal Expansion | 100 ºC temperature difference | 2.4mm/n |
Detergent resistance (3%) | ASTM D2248 | No change |
Humidity Resistance (3000hrs,100%RH,100°F) | ASTM D2247 | No change |
Salt spray resistance (3000hrs,5% salt) | ASTM B117 | No change |
Resistance to Staining |
600h radiate in 800W/M2 in humidity condition
,glossiness deviation less grade 2,color difference <= 4.0 |
No change |