CYG-DWT(RO) Semi-regid Heat Shrink Dual Wall Tubing
Category: Heat Shrink Busbar Sleeving
Material
Outer layer: irradiation crosslinking modified polyolefin
Inner layer: modified polyamide hot melt adhesive
Shrink ratio: 4:1
Characteristics
●Semi-hard, flame retarded
●Excellent mechanical, electric and chemical performance;
●Excellent sealing property;
●Continuous use temperature：-40℃~125℃;
● Shrinkage temperature ：100℃~150℃
Field of application
This product, designed according to the features of automobile wire harness, is semi-hard and transparent. It has excellent leakproofness, oil resistance and insulativity and conforms to the environmental requirements of RoHS. Meanwhile, it also has excellent mechanical property and thus has come into extensive use in the production of various automobile wire harnesses.
| Specification | Dimension before shrinkage（mm） | Dimension after full contraction （mm） | |
|---|---|---|---|
| Minimum inner diameter | Minimum inner diameter | Total wall thickness | |
| 5.75 | 5.75 | 1.25 | 1.45±0.30 |
| 7.40 | 7.40 | 1.65 | 1.55±0.30 |
| 11.0 | 11.0 | 2.40 | 2.35±0.30 |
| 14.0 | 14.0 | 3.00 | 2.30±0.30 |
| 18.3 | 18.3 | 4.35 | 2.35±0.30 |
| Item | Test Method | Indicator |
| Radial shrinkage ratio | UL224 | ≥50% |
| Longitudinal length change rate | UL224 | -10%~0 |
| Tensile Strength | ASTM D2671 | ≥10.4MPa |
| Breaking Elongation | ASTM D2671 | ≥200% |
| Aging Test Of Hot Air | 158.0℃±1.0℃/168h | - |
| Tensile Strength After Aging | ASTM D2671 | ≥7.3MPa |
| Elongation At Break After Aging | ASTM D2671 | ≥100% |
| Cold shock (applicable to outer layer only) | ASTM D2671 | -40℃±2℃，No breakage |
| Breakdown strength | ASTM D2671 | ≥19.7kV/mm |
| Volume resistivity | ASTM D876 | ≥1.0x1012Ω· cm |
| Flame retardant | UL224 | 30s，Self-extinguishing |
| Copper Corrosion | UL224 | 158℃，168h,by |
