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Low Smoke Zero Halogen Sheath Cable Material - High Fire Resistance from Leading China Suppliers & Factory
PRODUCT FEATURES
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 suitable for 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.
SCOPE OF USE
Cable and optical cable, coaxial cable, network cable, elevator cable, etc.
Test items and standards
Properties of halogen-free low smoke flame retardant thermoplastic polyolefin insulating materials and sheathing materials.
| No. | 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 | h | 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. | |||
CERTIFICATIONS
FREQUENTLY ASKED QUESTIONS
What is LSZH sheath cable material?
LSZH stands for Low Smoke Zero Halogen. It is a specialized sheathing material used in cables that produces very little smoke and no toxic halogen gases when exposed to high heat or fire.
Can these cables be used for outdoor applications?
Yes, the material features excellent weather resistance, allowing it to withstand daily meteorological conditions such as sunlight, rain, and humidity, making it suitable for both indoor and outdoor use.
How does LSZH material perform during a fire?
It offers high fire resistance, low smoke combustion, and low toxicity. This protects the internal insulation, prevents fire spread, and improves the safety of personnel evacuation by reducing smoke and toxic gas emissions.
Is this material environmentally friendly?
Yes, the zero halogen composition makes this sheath material highly environmentally friendly and significantly reduces potential damage to the atmospheric ozone layer.
What are the common scopes of use for this material?
This material is widely used for various types of cables, including standard cables, optical cables, coaxial cables, network cables, and elevator cables.