What Is LLDPE JD-7062BK Black Communication & Fiber Optic Cable Sheath?

LLDPE JD-7062BK is a linear low-density polyethylene (LLDPE) compound specifically engineered for black cable sheathing in communication and fiber optic applications. Formulated with optimized carbon black, antioxidants, and stabilizers, this material provides excellent mechanical protection, UV resistance, and long-term durability, making it ideal for outdoor and buried cable installations.

Composition and Properties

• Base Resin: LLDPE (Linear Low-Density Polyethylene)

• Carbon Black: Enhances UV resistance and weather stability

• Antioxidants/Stabilizers: Prevent thermal degradation and oxidation

• Processing Aids: Improve extrusion quality and surface smoothness

Key Features

• High Environmental Stress Crack Resistance (ESCR)

• Excellent Weatherability & UV Protection (suitable for outdoor use)

• Good Mechanical Strength & Flexibility

• Superior Abrasion & Impact Resistance

• Stable Electrical Insulation Properties

• Long-Term Durability in harsh environments

Applications

• Fiber Optic Cables: Outer sheath protection for optical fibers

• Communication Cables: Jacket for telephone, internet, and data cables

• Outdoor Cables: Resistant to sunlight, rain, and soil conditions

• Direct Burial Cables: High durability for underground installation

Advantages

• Long Service Life even under continuous outdoor exposure

• Cost-Effective compared to higher-performance materials like XLPE

• Ease of Processing with smooth extrusion and consistent wall thickness

• Reliable Protection for sensitive communication and fiber optic systems

Technical Parameters (Typical)

• Density: 0.922–0.926 g/cm³

• Carbon Black Content: 2.0–2.5%

• Tensile Strength: ≥20 MPa

• Elongation at Break: ≥400%

• Volume Resistivity: ≥10¹⁴ Ω·cm

• UV Resistance: >2,000 hours (no cracking or loss of integrity)

• Processing Method: Extrusion (cable sheathing)

Limitations

• Lower heat resistance compared to XLPE or fluoropolymers

• Not suitable for ultra-high voltage cable insulation

• Performance may decrease under continuous high-temperature conditions (>70°C)

FAQs

Q1: Why is JD-7062BK preferred for fiber optic cables?
Because it provides strong mechanical protection, UV resistance, and long-term durability without interfering with optical transmission.

Q2: Can JD-7062BK be used for underground cables?
Yes, its high ESCR and chemical resistance make it reliable for direct burial applications.

Q3: How does it compare with HDPE cable sheath?
LLDPE offers better flexibility and crack resistance, while HDPE has higher stiffness and abrasion resistance.

Q4: Is JD-7062BK recyclable?
Yes, like other polyethylene-based materials, it can be reprocessed for secondary applications.