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 |