Data
Application
| Trade Mark | A:B | Product Name | Application |
|---|---|---|---|
| YHSI-3079 | 25:10 | 125 ℃ Silane crosslinkable Low smoke Halogen free Flame retardant Polyolefin Cable Material | For Silane cable insulation |
| YHSS-3079H | 90:10 | 125 ℃ Silane crosslinkable Low smoke Halogen free Flame retardant Polyolefin Cable Material | For Silane cable sheath |
Technical Data
Technical Specifications
Typical physical property data, subject to batch test reports.
| No. | Test Items | Test conditions | Unit | YHSI-3079 | YHSS-3079H |
|---|---|---|---|---|---|
| 1 | Appearance | - | Compliance | Compliance | |
| 2 | Density | g/cm³ | 0.98 | 1.50 | |
| 3 | Tensile Strength | Mpa | 20.0 | 12.0 | |
| 4 | Elongation at Break | % | 400 | 180 | |
| 5 | Ageing | 150℃*168h | - | ||
| Retention rate of Tensile strength | % | 115 | 120 | ||
| Retention rate of Elongation | % | 80 | 80 | ||
| 6 | Short-term high-temperature ageing | 185℃*100h | - | ||
| Retention Rate of Elongation at Break | % | 70 | 70 | ||
| 7 | Low-temperature Impact | -40℃ | - | ||
| Failure (≤15/30) | Piece | 0 | 0 | ||
| 8 | Oxygen Index | % | 30 | ||
| 9 | Volume resistivity (20℃) | Ω.m | 1*10¹⁴ | 1*10¹² | |
| 10 | Dielectric Strength (20℃) | MV/m | 28 | 22 | |
| 11 | Hot Set Test | 200℃ 0.2Mpa 15min | - | ||
| Elongation under Load | % | 45 | 30 | ||
| Permanent deformation after cooling | % | +2.5 | 0 | ||
| 11 | The gas when it burns | ||||
| HCl and HBr content | % | 0 | 0 | ||
| HF content | % | 0 | 0 | ||
| pH value | - | 5 | 5 | ||
| Conductivity | μs/mm | 1 | 7 | ||
| 13 | Smoke Density | With flame | Ds max | / | 90 |
⚠️ The data of elongation at break istestedafter the process at 130℃ ×24h.
Processing Guide
Recommended Processing Parameters
1
Mixing:
- Mix the A and B Component evenly, drop them into the hopper.The material must be use up within 2 hours after unpacking.(It can’t be dried.) Avoid to bring the external water during the process.
2
Screw Type:
- Insulation: Suggest to use equal distance& unequal depth,single flight screw;Compression Ratio：2.5-3;
- Suggest to produce insulation with Semi-tube or tube extrusion
- Sheath: Low smoke halogen free special screw:Compression Ratio：1.5±0.2
3
Extrusion Temperature:
- YHSI-3079：Zone1 130±10 Zone2 150±10 Zone3 170±10 Zone4 170±10 Neck 170±10 Head 170±10
- YHSS-3079H: Zone1 110±10 Zone2 120±10 Zone3 140±10 Zone4 140±10 Neck 140±10 Head 140±10
- Controlthe melttemperature ofInsulation at190±10℃ThemelttemperatureofSheath at 160±10℃ .The extrusion temperatureshould be adjusted accordingtothe actualsituation.
4
Pay-off Speed:
- Without the effect of smoothness and performance, the faster,the better.
5
Cross-linking:
- Natural Cross-link:Temperature 15-25℃,cross-link will finished around 7days.When temperature is higher than 25℃,cross-link will finished around 3days.
- Water bath or Steam:Control the temperature around 60-70℃,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, to ensure the material is fully cross-linked.