| item | test method   | unit | PU |
| color | Â | Â | transparent |
| porportion | GB/T533-2008 | g/cm3 | 1.08 |
| heat endurance |  | ℃ | -50 to80 |
| Tensile strength | GB/T533-1998 | MPa | 8.5 |
| Ultimate Elongation | GB/T528-1998 | % | 587 |
| Breaking tensilbe | GB/T528-1998 | % | 20 |
| Tear strength | GB/T533-2008 | kv/ml | 48 |
Polyurethane