Physical Properties | |||
Item | Instrument | Standard | Test Standard |
Pencil Hardness | Pencil hardness instrument | ≥H | GB/6739 |
Impact Resistance | Impact testing instrument | ≥50kg.cm | GBT/1732 |
Flexing Endurance | Bending instrument | ≤2mm | GBT/6742 |
Adhesive Bonding | Cross-cut testing instrument | 0 Grade | GBT/9286 |
Bulge | Bulge instrument | ≥ 6 mm | GBT/9753 |
Chemical Properties | |||
Item | Standard | Result | Test Standard |
Resistance to salt spray | ≥500 Hs | ≥9 Grade | GBT/1771 |
Resistance to heat and humidity | ≥1000 Hs | Slight loss of gloss | GBT/1740 |
Anti-weathering ability | Artificial accelerated aging QUV-B313 240h | ≥3 Grade | GBT/1865 |