HZD2720-L
125 °C low-smoke halogen-free cross-linked polyolefin cable compound
Overview
HZD2720-L is a 125 °C low-smoke halogen-free, irradiation cross-linked flame-retardant cable compound. Colourable and built on a polyolefin base with inorganic flame retardants, it extrudes cleanly on standard PVC lines to a smooth, round surface, meeting UL758 and UL1581 mechanical requirements for 125 °C XLPE with an FT2 flame design — for electronic, communication, building and instrument cables.
Key features
- 125 °C low-smoke halogen-free, cross-linked
- Meets UL758 / UL1581 for 125 °C XLPE, FT2 design
- Smooth, round surface finish; colourable
- Low smoke density and low toxicity index
- Processable on standard PVC extrusion lines
Typical applications
Specifications
Typical values from LSZH sample testing.
| Property | Typical value | Unit | Test method |
|---|---|---|---|
| Density | 1.32 | g/cm³ | GB 1033 |
| Tensile strength | 14.7 | MPa | GB 1040 |
| Elongation at break | 385 | % | GB 1040 |
| Tensile retention after ageing (156 °C × 168 h) | 121 | % | GB 2951.7 |
| Volume resistivity (20 °C) | 6.8 × 10¹² | Ω·m | GB 1410 |
| Dielectric strength | 29 | MV/m | GB 1408 |
| Oxygen index | 29 | % | GB 2406 |
| Flammability | FT2 — Pass | UL1581 | |
| Smoke density (flaming / non-flaming) | 80 / 150 | GB 8323 | |
| Toxicity index | 2.3 | NES 713 | |
| pH | 6.1 | IEC 60754-2 | |
| Brittleness temperature | < -25 | °C | GB 5470 |
| Shore hardness A (D) | 91 (46) | GB 2411 |
Typical values from LSZH sample testing; reference only, not guaranteed minimum/maximum.
Processing guidance
- Recommended equipment
- φ45–150 single-screw extruder
- Length-to-diameter ratio (L/D)
- ≥ 20
- Filter screen (mesh)
- 20 / 80 / 20
- Temperature profile (feed / transport / melt / die)
- 110 / 125 / 140 / 140–150 °C
- Irradiation dose
- 100–140 kGy (10–14 Mrad)
Recommended machinery
Cable extrusion line (φ45–150 single screw)
Halogen-free screw, compression ratio < 2.5
Irradiation cross-linking (electron beam)
Interested in HZD2720-L?
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