China LSZH Optical Cable Material Suppliers - High Fire Resistance Network Cable Factory Products
PRODUCT FEATURES
1. High Fire Resistance
Low smoke zero halogen material usually have high fire resistance, which can protect the insulation material inside the cable in a fire and prevent the spread of fire.
2. Low Smoke Combustion
Low smoke zero halogen material produce less smoke in the event of a fire, which helps to improve the safety of personnel evacuation.
3. Low Toxicity
Low smoke zero halogen material usually have low toxicity, and even when burned, they produce less toxic gas, helping to reduce the risk of toxicity in a fire.
4. Electrical Insulation
Low smoke zero halogen material have good electrical insulation properties, suitable for optical cables and network cables, to protect telecommunications equipment from external interference.
5. Wide Range of Applications
Low smoke zero halogen material are suitable for a variety of telecommunications, communications and data transmission applications, including indoor and outdoor optical and cable cables.
SCOPE OF USE
Test items and standards
| 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 |
| Smoke density - 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
FAQ
What are the main features of low smoke zero halogen (LSZH) materials?
The main features include high fire resistance, low smoke combustion, low toxicity, excellent electrical insulation, and a wide range of applications in telecommunications and data transmission.
Where can these halogen-free materials be used?
They are widely used in indoor and outdoor optical cables, telephone lines, home network cables, high-speed data transmission cables, and other industrial or commercial environments.
How do these materials perform in the event of a fire?
They produce significantly less smoke and toxic gases compared to standard materials, which helps to protect internal cable insulation, prevents the spread of fire, and improves the safety of personnel evacuation.
What is the required tensile strength for these insulating materials?
According to the testing standards, the required tensile strength for WDZ-Y-J70, WDZ-Y-H70, and WDZ-Y-H90 materials is ≥10.0 MPa.
What is the standard oxygen index for these materials?
The oxygen index requirement is ≥28% for WDZ-Y-J70, and ≥30% for both WDZ-Y-H70 and WDZ-Y-H90 materials.