B1 flame retardant cable oxygen barrier sheath material is made of high purity resin as base material, mixed with halogen-free flame retardant, antioxidant, 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 cable sheath layers with GB/T 31247 standard.
Testing items | Value | Typical Value | Unit | Metho d |
Density | ≤1.67 | 1.65 | g/cm^3 | GB/T1033 |
Low temperature embrittlement temperature (-25℃) Failure number | ≤ 15/30 | 0/30 | pcs | GB/T5470 |
Environmental stress cracking resistance | ≥96 | 108 | F0/H | GB/T2951 |
Thermal stress cracking resistance | Uncracked | Uncracked | - | GB/T32129 |
Tensile strength before aging | ≥ 4 | 5 | MPa | GB/T2951 |
Elongation at break before aging | ≥ 50 | 65 | % | GB/T2951 |
Oxygen index | ≥40 | 42 | % | GB/T2406 |
Smoke density (with flame) | ≤100 | 80 | / | GB/T8323 |
Smoke density (without flame) | ≤350 | 200 | / | GB/T8323 |
Hydrogen halide gas content | ≤5 | 0 | m/g | GB/T17650 |
Combustion gas pH value | ≥4.3 | 5.9 | / | GB/T17650 |
Combustion gas conductivity | ≤ 10 | 6 | μs/mm | GB/T17650 |
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.