Irradiation Cross-linked LSZH-HFFR Polyolefin B1 Cable Sheath Material is made of high-purity resin as the base material, mixed with halogen-free flame retardants, antioxidants, etc., and extruded and granulated.
Product features: It has excellent performance such as halogen-free, heat-resistant, and weather-resistant, has no precipitation pollution, meets the relevant requirements of Rohs, and is easy to extrude and process.
Product application: It is suitable for the production of B1-level flame-retardant cable sheath layers required by GB/T31247 standards.
| Testing Items | PFXBK953073 | PFXBK953026 | PFXBK953074 | Unit | Method |
| Density | 1.56 | 1.55 | 1.57 | g/cm3 | GB/T1033 |
| Low temperature brittleness temperature (-25℃) Failure number | 0/30 | 0/30 | 0/30 | Pcs | GB/T5470 |
| Environmental stress cracking resistance | 108 | 108 | 108 | F0/H | GB/T2951 |
| Thermal stress cracking resistance | Uncracked | Uncracked | Uncracked | - | GB/T32129 |
| Tensile strength before aging | 11.6 | 11.8 | 11.9 | MPa | GB/T2951 |
| Elongation at break before aging | 175 | 180 | 170 | % | GB/T2951 |
| Performance After Aging 100℃×168H | |||||
| Change rate of tensile strength | 8 | 10 | 5 | % | GB/T2951 |
| Change rate of elongation at break | -12 | -9 | -14 | % | GB/T2951 |
| Volume resistivity at 20℃ | 5.2×10^10 | 5.6×10^10 | 5.4×10^10 | Ω.m | GB/T1410 |
| Dielectric strength | 21 | 22 | 20 | MV/m | DIN EN 6024 |
| Oxygen index | 38 | 37 | 39 | % | GB/T2406 |
| Smoke density (flame) | 21 | 22 | 20 | / | GB/T8323 |
| Smoke density (flameless) | 70 | 72 | 68 | / | GB/T8323 |
| Hydrogen halide gas content | 0 | 0 | 0 | m/g | GB/T17650 |
| Combustion gas pH value | 6.2 | 6.1 | 6.3 | / | GB/T17650 |
| Combustion gas conductivity | 2.2 | 2.3 | 2.3 | μs/mm | GB/T17650 |
| Toxicity index | 2.2 | 2.1 | 2.1 | / | |
| Peak heat release rate | 90 | 100 | 95 | kW/m^2 | ISO/5660 |
| Total heat release | 105 | 110 | 100 | MJ/m^2 | ISO/5660 |
| Average heat release rate | 80 | 80 | 80 | kW/m^2 | ISO/5660 |
Notes：
1. When the storage environment is humid or the surface quality requirements are high, the pellets can be placed in a hot air hopper at 80°C for 1 to 2 hours for drying.
2. The screw should be cleaned before extrusion to ensure the cleanliness of the product. It is recommended to use an 80-mesh or 100-mesh filter to avoid impurities from being mixed in during the extrusion process, while ensuring the melt pressure to obtain a good appearance and material density.
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