Physical Properties | Chemical Properties |
Pencil hardness pencil hardness tester ≥ H GB/6739 | Salt spray: through 3000 hours-notched corrosion not exceeding 2mm according to GB/T 1771 |
Impact resistance impact meter ≥ 50kg.cm GB/T 1732 | Moisture resistance: Through 3000 hours without bubbling GB/T 1740 |
Bending resistance bending instrument ≤ 2mm GB/T 6742 | Artificial weathering: color difference less than 5.0, light retention rater greater than 90%, according to GB/T 1865-1997 |
Adhesion bag test class 0 GB/T 9286 | Outdoor weather resistance: 5 years Florida exposure (facing south 45℃). AAMA2604-05 |
Cup process cup process meter ≥ 6mm GB/T9753 | Color shade difference: E<5, gloss retention rate > 30%, efflorescence no more than No. 8 |