The flame-retardant polyethylene sheath material for wind power generation is granulated by twin-screw, which has good waterproof performance, mechanical performance, flame retardant performance, crack resistance, excellent wear resistance, low temperature resistance, UV resistance, and aging resistance. It can easily cope with harsh outdoor climates.
| Serial No. | Test Item | Unit | Requirement | Typical Value | |||
| DS-ZPE-1 | DS-ZPE-2 | DS-ZPE-3 | |||||
| 1 | Specific Gravity | g/cm³ | ≤1.35 | 1.30 | 1.28 | 1.28 | |
| 2 | Tensile Strength | MPa | ≥13 | 14.5 | 15.0 | 15.5 | |
| 3 | Elongation at Break | % | ≥320 | 450 | 470 | 480 | |
| 4 | Oxygen Index | % | ≥26 | 30 | 28 | 26 | |
| 5 | Air thermal aging at 110℃ for 240 hours | Maximum Change Rate of Tensile Strength |
% | ≤25 | +5 | +7 | +7 |
| Retention Value of Elongation | % | ≥300 | 410 | 420 | 425 | ||
| 6 | Environmental Stress Cracking Resistance, FO, 50℃ | h | ≥500 | Pass | Pass | Pass | |
| 7 | Heat Deformation (110℃, 8.8N) | % | ≤50 | 12 | 16 | 15 | |
| 8 | Thermal Shock Resistance Test (130℃, 1h, 5Kg) | No Cracking | No Cracking | No Cracking | No Cracking | No Cracking | |
| 9 | Impact Brittleness Temperature | ℃ | -40 | Pass | Pass | Pass | |
| 10 | Volume Resistivity at 20℃ | Ω·cm | 5.0×10¹⁴ | 9.1×10¹⁵ | 9×10¹⁵ | 9.5×10¹⁵ | |
| 11 | HCl and HBr Content | % | ≤0.5 | --- | <0.5 | <0.5 | |
| 12 | PH Value | / | ≥4.3 | --- | 5.1 | 5.2 | |
| 13 | Conductivity | μS/mm | ≤10 | --- | 0.50 | 0.43 | |
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