Low Smoke Zero Halogen Sheath Cable Material (LSZH Sheath Cable Material)
1. Weather resistance: Low smoke zero halogen sheath cable material can withstand the effects of daily meteorological conditions, such as sunlight, rain and humidity, so it is suitablefor indoor and outdoor applications.
2. High fire resistance: Low smoke zero halogen sheath material usually have high fire resistance, which can protect the insulation material inside the cable in a fire and prevent the spread of fire.
3. Low smoke combustion: Low smoke zero halogen sheath cable material produces less smoke in the event of a fire, which helps to improve the safety of personnel evacuation.
4. Low toxicity: Low smoke zero halogen sheath cable material usually has low toxicity, even when burning, it produces less toxic gas, helping to reduce the risk of toxicity in fire.
5. Environmental protection: The zero halogen composition makes this sheath material more environmentally friendly and reduces the damage to the atmospheric ozone layer.
Cable and optical cable, coaxial cable, network cable, elevator cable, etc.
Inspection item Unit Requirements WDZ-Y-J70 WDZ-Y-H70 WDZ-Y-H90 1 Tensile strength MPa ≥10. 0 ≥10. 0 ≥10. 0 2 Elongation at break % ≥160 ≥160 ≥160 3 Air aging chamber Aging temperature ℃ 100±2 100±2 110±2 Aging time h 168 168 240 Maximum rate of change of tensile strength % ±25 ±25 ±25 Maximum rate of change of elongation at break % ±25 ±25 ±25 4 Thermal deformation Test temperature ℃ 90±2 90±2 90±2 Experimental result % ≤50 ≤50 ≤50 5 20℃ volume resistivity Ω · m ≥1. 0×1012 ≥1. 0×1010 ≥1. 0×1010 6 Volume resistivity at operating temperature Test temperature ℃ 70±1 — — Volume resistivity Ω · m ≥2. 0×108 — — 7 Dielectric strength MV/m ≥20 ≥18 ≥18 8 Heat shock test Test temperature ℃ 130±3 130±3 130±3 Test time % 1 1 1 Experimental result — No cracking No cracking No cracking 9 Impact embrittlement temperature Test temperature ℃ -25 -25 -25 Experimental result Number ≤15/30 ≤15/30 ≤15/30 10 Ozone resistance test Test temperature ℃ — 25±2 25±2 Experiment time h — 24 24 Ozone concentration ppm — 250~300 250~300 Experimental result — — No cracking No cracking 11 Hot water immersion test Test temperature ℃ — 70±2 70±2 Experiment time h — 168 168 Maximum rate of change of tensile strength % — ±30 ±30 Maximum rate of change of elongation at break % — ±35 ±35 12 Oxygen index % ≥28 ≥30 ≥30 13 Smoke density flameless — ≤350 ≤350 ≤350 flaming — ≤100 ≤100 ≤100 14 Combustion releases gas acidity HCI and HBr content % ≤0.5 ≤0.5 ≤0.5 HF content % ≤0.1 ≤0.1 ≤0.1 pH value — ≥4.3 ≥4.3 ≥4.3 Electric conductivity μS/mm ≤10 ≤10 ≤10 15 Material smoke toxicity hazards According to the application requirements of the product, negotiated by the supply and demand parties.Properties of halogen-free low smoke flame retardant thermoplastic polyolefin insulating materials and sheathing materials.