Product name: XLPO Sheath Material For High-Voltage Wires In New Energy Vehicles
Various models of BYD\Tesla\Xpeng new energy vehicles are made of this material.
| No. | Testing Items | VALUE | Typicalval | UNIT | Method |
| 1 | Density（20℃） | -- | 1.35 | g/cm3 | GB/T 1033 |
| 2 | Tensile strength | ≥10 | 12.5 | MPa | GB/T 1040.2 |
| 3 | Elongation at break | ≥350 | 430 | ％ | GB/T 1040.2 |
| 4 | Hot extension 200℃,0.2Mpa,15min | ||||
| The elongation rate under load | ≤100 | 50-70 | ％ | \ | |
| Permanent rate of change after cooling | ≤15 | 2 | ％ | GB/T 2951.21 | |
| 5 | Heat deterioration 175±2℃, 240h | ||||
| Rate of change in the tensile strength | ≤±30 | 25 | % | GB/T 2951.12 | |
| Rate of change of fracture elongation | ≤±30 | -29 | % | GB/T 2951.12 | |
| Winding | Notbroken | Notbroken | \ | ISO6722 | |
| Withstand voltage | Notbroken | Notbroken | \ | ISO6722 | |
| 6 | Heat deterioration 150±2℃, 3000h | ||||
| Winding | Notbroken | Notbroken | \ | ISO6722 | |
| Withstand voltage | Notbroken | Notbroken | \ | ISO6722 | |
| 7 | Impact brittlement temperature（-40 ºC) | ≤15/30 | 0/30 | 个 | GB/T 5470 |
| 8 | Volume resistivity(20ºC) | ≥1.0×10^12 | 4.5×10^12 | Ω·m | GB/T 1410 |
| 9 | Dielectric strength(20ºC) | ≥20 | 30 | MV/m | GB/T 1408.1 |
| 10 | Solvent resistance (outer diameter rate of change) | ||||
| Gasoline resistance (ISO1817C, 23°C, 20H)h | |||||
| Rate of change of outer diameter | ≤15 | 12.6 | % | GB/T25087 ISO14572 | |
| Diesel resistance (90%ISO1817 3# oil + 10% paraxylene, 23°C, 20h) | |||||
| Rate of change of outer diameter | ≤15 | 2.3 | % | GB/T25087 ISO14572 | |
| Engine oil resistance (ISO1817 2# oil, 50°C, 20h) | |||||
| Rate of change of outer diameter | ≤15 | 3.1 | % | GB/T25087 ISO14572 | |
