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Low Smoke Halogen-free Flame-retardant Cable Granules from China Suppliers and Factory for Insulation and Sheath
Product Description
Low smoke and halogen-free materials for cables are a special material widely used in cable manufacturing, which occupies an important position in the cable industry with its unique environmental and safety performance.
1. Definition
Low smoke and halogen-free cable materials refer to materials that do not produce toxic smoke and corrosive gases during cable combustion. This material is commonly used for the insulation and sheath layers of cables to improve their environmental performance and safety.
2. Characteristics
Low smoke and halogen-free materials do not produce toxic smoke and corrosive gases such as hydrogen halides during combustion, making them harmless to the environment and human health.
This material usually contains flame retardants such as magnesium oxide or magnesium hydroxide, which enable the cable to self extinguish or slow down the combustion rate during combustion, improving the fire resistance of the cable.
The insulation layer of low smoke halogen-free materials has good corrosion resistance and can maintain good electrical and mechanical properties in various chemical environments.
This material typically has high tensile strength, good weather resistance, flexibility, and elasticity, which can meet the needs of cables in different usage environments.
3. Application
Low smoke halogen-free cable materials are widely used in various fields due to their excellent environmental and safety performance, including but not limited to:
4. Advantages and disadvantages
Advantages:
Disadvantages:
Parameters
Common Specification Table
| ITEM | UNIT | Technical Requirements | ||||
|---|---|---|---|---|---|---|
| RW-WDZ-YH70 | RW-WDZ-YH90 | RW-WDZ-YH-105 | RW-WDZ-YH-125 | RW-WDZ-YH-150 | ||
| Tensile Strength | Mpa | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 |
| Elongation at Break | ％ | ≥150 | ≥150 | ≥150 | ≥150 | ≥150 |
| Thermal aging temperature | ℃ | 100±2℃ | 120±2℃ | 135±2℃ | 158±2℃ | 180±2℃ |
| Thermal aging time | H | 168h | 168h | 168h | 168h | 168h |
| Elongation at break retention rate | ％ | ±25 | ±25 | ±25 | ±25 | ±25 |
| Test temperature | ℃ | -25 | -25 | -25 | -25 | -25 |
| Test results | Failure data | ≤15/30 | ≤15/30 | ≤15/30 | ≤15/30 | ≤15/30 |
| Dielectric Strength | MV/m | ≥18 | ≥18 | ≥18 | ≥18 | ≥18 |
| 20℃ Volume Resistivity | Ω.m | ≥1.0X108 | ≥1.0X108 | ≥1.0X108 | ≥1.0X108 | ≥1.0X108 |
| Temperature | ℃ | 200±3 | 200±3 | 200±3 | 200±3 | 200±3 |
| Processing time | min | 15 | 15 | 15 | 15 | 15 |
| Mechanical stress | MPa | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Elongation under load | ％ | ≤100 | ≤100 | ≤100 | ≤100 | ≤100 |
| Maximum permanent deformation after cooling | ％ | ≤25 | ≤25 | ≤25 | ≤25 | ≤25 |
| Test temperature | ℃ | 70±2 | 70±2 | 70±2 | 70±2 | 70±2 |
| Testing time | h | 168 | 168 | 168 | 168 | 168 |
| Maximum rate of change of tensile strength | ％ | ±30 | ±30 | ±30 | ±30 | ±30 |
| Oxygen Index | ％ | ≥28 | ≥28 | ≥28 | ≥28 | ≥28 |
| Smoke Density-flame | - | ≤350 | ≤350 | ≤350 | ≤350 | ≤350 |
| Combustion releases acid in the gas | ％ | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 |
| HCI and HBr contents | ％ | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 |
| HF contents | - | ≥4.3 | ≥4.3 | ≥4.3 | ≥4.3 | ≥4.3 |
| PH contents | Us/mm | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 |
Support customizing other specifications
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Frequently Asked Questions
What are low smoke and halogen-free (LSHF) cable materials?
Low smoke and halogen-free cable materials refer to special materials commonly used for the insulation and sheath layers of cables that do not produce toxic smoke and corrosive gases during cable combustion, thereby improving safety and environmental performance.
What flame retardants are used in these cable materials?
These materials typically contain flame retardants such as magnesium oxide or magnesium hydroxide. These additives enable the cable to self-extinguish or slow down the combustion rate during a fire, significantly improving the cable's fire resistance.
Where are low smoke halogen-free cables typically applied?
They are widely used in high-rise residential buildings, important public places (like shopping malls, airports, and stations), underground facilities (such as tunnels and subways), important facilities (like nuclear power plants and computer control centers), and industrial fields (such as petrochemicals and the power industry).
What are the main advantages of low smoke halogen-free cable materials?
The main advantages include environmental protection (burning does not produce toxic gases), safety (excellent flame retardant properties), corrosion resistance in various chemical environments, and excellent physical properties such as high tensile strength and good weather resistance.
Are there any disadvantages to using these materials?
The primary disadvantage is the high cost. Due to the complex manufacturing process and the cost of raw materials, low smoke halogen-free cables are priced higher compared to ordinary cables.
Can I request custom specifications for these cable materials?
Yes, we support customizing other specifications beyond the common ones listed in our technical parameters table to suit your specific application requirements.