Technical Specifications
Typical physical property data, subject to batch test reports.
| Test project | Units | YHS-4251EI |
|---|---|---|
| Appearance | - | Compliance |
| Density | g/cm³ | 1.38 |
| Shore Hardness | A | 85±2 |
| Tensile Strength | MPa | 10 |
| Elongation at Break | % | 280 |
| Ageing Test conditions | - | 150℃*168h |
| Variation of Tensile strength | % | +15 |
| Variation of Elongation | % | -15 |
| Low-temperature Impact Test Conditions | - | -40℃ |
| Low-temperature Impact Failure(≤15/30) | Piece | 0 |
| Oxygen Index | % | 31 |
| Volume resistivity(20℃) | Ω·m | 3*10¹³ |
| Dielectric Strength (20℃) | MV/m | 27 |
| Thermal Elongation Test Conditions | - | 200℃ 0.2Mpa 15min |
| Elongation under Load | % | 30 |
| Permanent deformation after cooling | % | 0 |
| PH Value | - | 5.5 |
| electrical conductivity | μs/mm | 1.1 |
Extrusion Process
① Mixing:Mix the A and B Component evenly,drop them into the hopper.Please use EVA masterbatch if color required(it should be dried).The material must be use up within 2 hours after unpacking.(It can't be dried.)Avoid to bring the external water in during the process.
② Screw Type: Single-thread screw with constant pitch and variable depth Compression Ratio:1.6±0.2
③ Extrusion Temperature:
④ Pay-off Speed:Without the effect of smoothness and performance,the faster,the better.
⑤ Natural Cross-linking: Natural Cross-link:Temperature ＞25℃,cross-link will be finished around 7days.
Water bath o Steam Crosslinking :To prevent the cable from sticking, please control the Temperature around 60℃,cross-link will finished about 4hours(the thickness of the test piece is ≤ 1mm).Full performance test,water bath (steam)60 ℃,more than 8 hours,ensure the material is fully cross-linked.
△The final extrusion temperature needs to be adjusted according to the actual situation.
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | Neck | Head | Melt |
|---|---|---|---|---|---|---|
| 100±10 | 120±10 | 140±10 | 140±10 | 140±10 | 140±10 | 160±10 |
Packaging and storage
- ① Package: Vacuum packed.
- ② Storage: Should be stacked on the backing plate in a clean and dry warehouse.
- ③ Valid Period: 6 months.