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Flexible PVC compounds are widely used in cable sheathing due to their durability, electrical insulation properties, and cost-effectiveness. These compounds are specially formulated to provide flexibility, flame resistance, and long-term performance in various environments.
NY/ZH-90 90℃ Oil Resistant PVC Flame Retardant Soft Sheath Plastic
Why Choose Flexible PVC Compound for Cable Sheathing?
Excellent Flexibility & Durability
PVC compounds can be customized to different flexibility levels, making them ideal for cables that require bending and movement.
They resist cracking and abrasion, ensuring long service life.
Superior Electrical Insulation
PVC naturally provides high dielectric strength, preventing electrical leakage.
Suitable for low-voltage and medium-voltage cables.
Flame Retardant & Low Smoke Properties
Many PVC compounds are formulated with flame-retardant additives (e.g., LSZH – Low Smoke Zero Halogen) for safety in buildings and tunnels.
Cost-Effective Compared to Alternatives
PVC is more affordable than many thermoplastics like TPE or XLPE while maintaining good performance.
Resistance to Chemicals & Moisture
Protects cables from oils, acids, and environmental moisture.
Comparison: Flexible PVC vs. Other Cable Sheathing Materials
| Property | Flexible PVC Compound | Cross-Linked PE (XLPE) | Thermoplastic Elastomer (TPE) |
|---|---|---|---|
| Cost | Low | High | Very High |
| Flexibility | High | Moderate | Very High |
| Flame Resistance | Good (with additives) | Excellent | Moderate |
| Temperature Range | -20°C to 70°C | -40°C to 90°C | -50°C to 120°C |
| Chemical Resistance | Good | Excellent | Excellent |
Note: PVC remains the most economical choice for general-purpose cables, while XLPE and TPE are used in specialized high-performance applications.
Applications of Flexible PVC Sheathing Compounds
Building Wires & Cables (PVC is the most common sheathing material)
Automotive Cables (Flexibility and abrasion resistance are key)
Industrial Power Cables (Flame-retardant grades for safety)
Telecommunication Cables (UV-resistant formulations for outdoor use)
Underground & Mining Cables (Moisture and chemical resistance required)
Choosing the Right PVC Compound for Your Cables
When selecting a PVC compound for cable sheathing, consider:
Flexibility requirements (Shore A hardness levels)
Flame retardancy needs (LSZH vs. standard PVC)
Environmental conditions (UV resistance, moisture protection)
Regulatory compliance (UL, RoHS, REACH standards)
