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cable sheathing compound
| No. | Item | Unit | Standard requirements | Measured value |
| 1 | Tensile strength | MPa | ≥7.0 | 8.0 |
| Elongation at break | % | ≥300 | 350 | |
| 2 | Air oven aging test 75±2℃×240 h | |||
| Tensile strength change rate | % | ±20 | 8 | |
| Elongation at break | % | ≥250 | 320 | |
| Change rate of elongation at break | % | ≤-20 | -15 | |
| 3 | Thermal extension test 200±3℃×15 min×0.2N/mm2 | |||
| Elongation under load | % | ≤175 | 50 | |
| Permanent deformation after cooling | % | ≤25 | 10 | |