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HZD2820-G
HZD2820-G is a high flame-retardant 150°C irradiation cross-linked LSZH compound — VW-1 capable for rail transit, marine and high-temperature safety cable.
Material / equipment — High flame-retardant irradiation cross-linked LSZH compound
Overview
HZD2820-G is a 150°C halogen-free cable compound with a reinforced flame-retardant package (oxygen index 42 typical), colorable, built on a polyolefin base with inorganic flame retardants, antioxidants and lubricants. It serves electronic equipment wire and metro cable insulation where both sustained heat and fire safety matter.
Used as both insulation and jacket in a properly designed construction, cable made from HZD2820-G passes the UL VW-1 vertical flame test, with thermal aging verified at 180°C × 168 h.
Packaging & Storage
Supplied in aluminum-plastic bags with kraft paper lining, 25 kg net per bag. Store in a dry, well-ventilated warehouse.
Technical data
Typical Properties
| Property | Unit | Requirement | Typical | Test Method |
|---|---|---|---|---|
| Density | g/cm³ | ≤ 1.60 | 1.51 | GB 1033 |
| Tensile strength | MPa | ≥ 10.3 | 12.31 | GB 1040 |
| Elongation at break | % | ≥ 150 | 162 | GB 1040 |
| Thermal aging | °C × h | 180 × 168 | 180 × 168 | GB 2951.7 |
| Tensile strength retention after aging | % | ≥ 70 | 123 | GB 2951.7 |
| Elongation retention after aging | % | ≥ 70 | 82 | GB 2951.7 |
| Volume resistivity (20°C) | Ω·m | ≥ 1×10¹² | 5.35×10¹² | GB 1410 |
| Dielectric strength | MV/m | ≥ 25 | 29 | GB 1408 |
| Oxygen index | % | ≥ 35 | 42 | GB 2406 |
| Flame rating | — | VW-1 | Pass | UL 1581 |
| Smoke density (flaming) | — | ≤ 100 | 83 | GB 8323 |
| Smoke density (non-flaming) | — | ≤ 180 | 135 | GB 8323 |
| Toxicity index | — | ≤ 5 | 1.3 | NES 713 |
| pH | — | ≥ 4.3 | 5.6 | IEC 60754-2 |
| Conductivity | μS/mm | ≤ 10 | 1.2 | IEC 60754-2 |
| Brittleness temperature | °C | < −25 | < −25 | GB 5470 |
| Shore hardness A (D) | — | — | 95 (53) | GB 2411 |
* Typical values are measured on production samples and provided for reference only — they are not a specification guarantee. Request the official TDS for binding limits.
Use cases
Applications
- —Rail transit and metro cable insulation
- —Marine and shipboard wiring
- —Electronic equipment wire in hot environments
- —Jacket and insulation for VW-1 rated cable designs
Process notes
Processing Recommendations
- —Recommended equipment: φ45–150 single-screw extruder, L/D ≥ 20, screen pack 20/80/20 mesh
- —A dedicated halogen-free screw with compression ratio below 2.5 improves output and surface quality
- —Temperature profile: feed 110°C / transport 125°C / melting 140°C / die 140–150°C — trim die temperature to wire surface finish
- —Irradiation dose: 60–100 kGy (6–10 Mrad)
Where it's used
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Inquiry
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