Cable Compound Granules
Overview
Cable Compound Granules are engineered polymer materials designed for extruding insulation and protective sheaths around electrical cables. They are formulated with base resins (e.g., PVC, polyethylene, or cross-linked polymers) and additives like flame retardants, stabilizers, and plasticizers to meet industry standards. These granules are favored for their processability in extrusion equipment, ensuring consistent thickness and performance in harsh environments. Their formulations are tailored to balance flexibility, durability, and electrical insulation properties.
Physical and Chemical Properties
Typical Cable Compound Granules exhibit low moisture absorption and high resistance to chemicals, oils, and environmental stress cracking. Their mechanical properties include tensile strength of 10–20 MPa and elongation at break exceeding 150% for flexible applications. Thermal stability ranges from -40°C to 105°C, with halogen-free variants offering reduced smoke emission during combustion. Electrical properties such as volume resistivity (>10¹² Ω·cm) and dielectric strength (>20 kV/mm) are critical for high-voltage applications.
Main Applications
These granules are primarily used in power distribution cables (LV to HV), fiber optic sheathing, and automotive wiring due to their flame-retardant (e.g., IEC 60332 compliant) and weather-resistant traits. Specialized grades include low-smoke zero-halogen (LSZH) compounds for underground/subway cables and UV-stabilized versions for outdoor installations. Emerging uses include renewable energy systems like solar panel wiring.
Safety and Storage
Store granules in sealed containers to prevent moisture absorption, which can degrade processing performance. Avoid direct sunlight to maintain polymer integrity. During extrusion, ensure adequate ventilation to handle potential fumes, especially with halogenated compounds. MSDS sheets should be reviewed for specific handling guidelines, including PPE requirements like gloves and respirators.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification and batch consistency guarantees. Key specifications to request include melt flow index (MFI), oxygen index (LOI for flame resistance), and compliance with standards like UL 1581 or EN 50642. Bulk purchases (20+ metric tons) often attract 5–10% discounts. Consider regional logistics; granules are typically shipped in 25-kg woven sacks or 1-ton big bags with moisture barriers.
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