| NO. |
Test Items |
Values |
| 1 |
Before ageing test |
1.1 Elongation at break(%) |
≥300 |
| 1.2 Tensile strength(MPa) |
≥11 |
| 1.3Anti-tearing strength(MPa) |
≥5.0 |
| 2 |
After Oven ageing test |
2.1 Test condition |
75±2℃/240h |
| 2.2 Tensile strength rate(%) |
±15 |
| 2.3 Middle range of elongation at break(%) |
≥250 |
| 2.4 Elongation at break rate(%) |
±25 |
| 3 |
Oil-proof test (IRM902 oil ) |
3.1 Test condition |
100±2℃/24h |
| 3.2 Tensile strength rate(%) |
±40 |
| 3.3 Elongation at break rate(%) |
±40 |
| 4 |
Heat extension test |
4.1 Test condition |
200±3℃/15min, 0.20N/mm2 |
| 4.2 Loading elongation rate(%) |
≤175 |
| 4.3 Permanent deformation after cooling(%) |
≤25 |
| 5 |
Oxygen index OI |
≥35 |
