HZD1611
RoHS-compliant 125 °C flame-retardant heat shrink tube compound
Overview
HZD1611 is the RoHS-compliant version of our 125 °C irradiation cross-linked flame-retardant heat shrink tube master compound. Free of restricted substances, it keeps the mechanical performance required by UL758 and UL1581 for 125 °C XLPE while serving the same UL / CSA and UL224 tubing applications — cable joints, terminations, component insulation and conductor bundling.
Key features
- RoHS-compliant, free of restricted substances
- 125 °C irradiation cross-linked, flame-retardant
- Meets UL758 / UL1581 mechanical requirements for 125 °C XLPE
- Clean extrusion and consistent shrink performance
- Colourable with strong cost-to-performance ratio
Typical applications
Specifications
Typical values from LSZH sample testing.
| Property | Typical value | Unit | Test method |
|---|---|---|---|
| Density | 1.33 | g/cm³ | GB 1033 |
| Tensile strength | 15.7 | MPa | GB 1040 |
| Elongation at break | 421 | % | GB 1040 |
| Tensile retention after ageing (156 °C × 168 h) | 105 | % | GB 2951.7 |
| Elongation retention after ageing | 95 | % | GB 2951.7 |
| Volume resistivity (20 °C) | 5.9 × 10¹² | Ω·m | GB 1410 |
| Dielectric strength | 29 | MV/m | GB 1408 |
| Oxygen index | 28 | % | GB 2406 |
| Smoke density (flaming / non-flaming) | 185 / 144 | GB 8323 | |
| Halogen acid gas content | 83 | mg/g | IEC 60754-1 |
| Brittleness temperature | < -25 | °C | GB 5470 |
| Shore hardness A (D) | 91 (48) | 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)
- 120 / 130 / 140 / 140–150 °C
- Irradiation dose
- 80–100 kGy (8–10 Mrad)
Recommended machinery
Single-screw extrusion line (φ45–150)
L/D ≥ 20
Heat shrink tube expansion line
Interested in HZD1611?
Send your specification for a recommendation, sample and quotation. Our engineering team typically responds within 24 hours.