DUWAI HSWH-F4X 4:1 High Flame Retardant Heat-Shrink Double Wall Tube for Automotive Wire Beams - Superior Fire Safety and Durability
HSWH-F4X high-flame retardant double-wall tube for automotive wire beam is composed of polyolefin and flameretardant hot melt adhesive the outer laver of polyolefin insulating flame retardant material, the inner layer of hotmelt adhesive can buffer mechanical strain and strong sealing. The product is aimed at automotive wire harnesses.Onthe basis of meeting the basic conditions of low temperature and high rate shrinkage, it improves the flame retardantcharacteristics and overcomes the environmental impact which has higher requirements for wire harnesses.
Product features
| Heat shrinkage ratio:4:1 | Uv resistance,high flame retardant |
| Initial shrinkage temperature:≥+70℃ | Environmental standard:RoHS |
| Full shrinkage temperature:≥+125℃ | Standard color:black on the outside,white on the inside |
| Operating temperature:-45C~+125℃ |
Outer technical indicators
| Performance | Index | Experimental methods |
| Tensile strength (MPa) | ≥10.4 | ASTM D 2671 |
| Elongation at break (%) | ≥300 | ASTM D 2671 |
| Tensile strength after aging (Mpa) | ≥7.3 | 158°℃×168h |
| Elongation at break after aging (%) | ≥100 | 158℃×168h |
| Axial rate of change (%) | -8~+8 | ASTM D 2671 |
| Flame retardancy | pass | ASTM D 2671B(method) |
| Breakdown strength (kV/mm) | ≥15 | IEC 60243 |
| Volume resistivity(2/cm) | ≥10v¹⁴Ωcm | IEC 60093 |
Hot melt adhesive specifications
| Performance | Index | Experimental methods |
| Softening point (℃) | 90±5 | ASTM E 28 |
| Water absorption (%) | <0.2 | ASTM D 570 |
| Peel strength(PE)(N/25mm) | ≥120 | ASTM D 1000 |
| Peel strength(A1)(N/25mm) | ≥80 | ASTM D 1000 |
| Specification | Supplied inner diameter (mm) | Complete contraction (mm) | Standard packaging M/root | |||
| Inch | mm | Inner diameter | Total wall thickness | The adhesive layer has a thick wall | ||
| 2/13 | 4.0 | ≥4.0 | ≤0.95 | 1.40±0.30 | 0.60±0.20 | 1.22 |
| 1/4 | 6.0 | ≥6.0 | ≤1.27 | 1.70±0.30 | 0.80±0.20 | 1.22 |
| 5/16 | 8.0 | ≥8.0 | ≤1.65 | 2.00±0.30 | 0.95±0.20 | 1.22 |
| 2/5 | 10.0 | ≥10.0 | ≤2.00 | 2.30±0.40 | 1.10±0.20 | 1.22 |
| 1/2 | 12.0 | ≥12.0 | ≤2.41 | 2.45±0.40 | 1.20±0.20 | 1.22 |
| 3/4 | 18.0 | ≥18.0 | ≤4.45 | 2.60±0.40 | 1.34±0.30 | 1.22 |
