4:1 Semi-Rigid Adhesive Lined Polyolefin Heat Shrink Tubing
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Model: CYG-DWT(RX)
Material
Exterior layer: irradiated cross-linked modified polyolefin
Inner layer: modified polyamide hot-melt adhesive
Shrink ratio: 4:1
Applications
The semi-rigid adhesive lined polyolefin heat shrink tubing is a dual wall heat shrink tubing that is designed to meet special requirements for automotive wire harnesses. This transparent semi-rigid heat shrink tubing has an excellent sealing performance, diesel resistance and insulation performance. The continuous operating temperature of this heat shrinkable product is -40℃~125℃, and the shrinkage temperature is 100℃~150℃.
| Size | As supplied | After recovery | ||
| ID (mm) | ID (mm) | Total wall (mm) | Adhesive wall(mm) | |
| 5.7 | ≥5.7 | ≤1.27 | 1.5±0.30 | 0.7 |
| 8.0 | ≥8.0 | ≤1.65 | 1.8±0.30 | 0.7 |
| 10.8 | ≥10.0 | ≤2.4 | 2.2±0.50 | 1.2 |
| 17.8 | ≥17.8 | ≤4.45 | 2.4±0.50 | 1.2 |
| Item | Test methods | Requirement |
| Operation temperature | Company standard | -40℃-125℃ for jacket |
| Shrink temperature | ASTM D2671 | 110℃ |
| Tensile strength | ASTM D638 | ≥10.4MPa |
| Elongation at break | ASTM D638 | ≥200% |
| Cold shock | ASTM D745，-40±2℃ | No cracking |
| Dielectric strength | ASTM D2671 | ≥19.7kv/mm |
| Volume resistance | ASTM D876 | ≥1×1013Ω.cm |
| Tensile strength after aging | ASTM D638 | ≥7.3MPa |
| Elongation at break after aging | ASTM D638 | ≥100% |
| Dielectric strength after aging | ASTM D2671 | ≥15.8kv/mm |
| Softening point of melt liner(℃) | Company standard | 110±5 |
| Peel strength of melt liner (N/25mm) | ASTM D 2671 | >80 |
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