| About |
|---|
| Visico LE4423/LE4432 is a scorch retardant, moisture-crosslinking polyethylene compound for low voltage insulation The combination of a VISICO base material, LE4423, and a tin catalyst masterbatch, LE4432, provides a highly scorch retardant compound with excellent thermal stability. LE4423/LE4432 contains a patented scorch retardant additive (SRA) that increases the processing window for a moisture crosslinking compound and minimizes the tendency for premature crosslinking in the extruder, head or die. LE4432 should be added to LE4423 directly in the extruder hopper by dry blending a ratio of 10 parts LE4432 to 90 parts LE4423. LE4432 also provides, in addition to catalyst, a stabilizaton package containing suitable antioxidants, a metal passivator and a metal deactivator and a 25% loading of fine particle size carbon black for UV weather resistance. Properly mixed, during the extrusion process, LE4423/LE4432 exhibits excellent thermal stability to oxidation. The final insulation or jacketing will also contain 2.5% of a suitable carbon black to ensure satisfactory UV weathering stability. APPLICATION: LE4423/LE4432 is recommended for use as insulation for low voltage control cables and power cables up to 6 kV in rating. Specifications Visico LE4423/LE4432 in combination meets the applicable requirements as below when processed using extrusion practice and testing procedure: Underwriters Laboratories Standards 854 for types USE and USE-2 EC 502 NBN C 33-321 Canadian Standards Association C22.2 No. 1790-00-Airport Series Lighting Cables and C22.2 No. 38 Cable Type RW-90 Outdoor NF C33-210 HD 603 S1 NF C32-090 ASTM D 2655&& |
| Product Description | |
|---|---|
| Supplier | Borealis AG |
| Generic | XLPE |
| Material Status | Commercial: Active |
| Features | Weather resistance is good,Crosslinked,Inoxidizability,Heat Stabilized |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | ASTM D792 | ||
| — | 0.923 | g/cm³ | ASTM D792 |
| — | 1.05 | g/cm³ | ASTM D792 |
| Melt Flow Rate | 0.90 | g/10min | ASTM D1238 |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| yield | 15.0 | MPa | ASTM D412 |
| Tensile strain | |||
| fracture | 300 | % | ASTM D412 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| thermosetting | ICEA T-28-562 | ||
| 150℃ | < 5.0 | % | ICEA T-28-562 |
| 150℃ | < 50 | % | ICEA T-28-562 |
| Aging performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Retention rate of tensile performance | |||
| 121℃ | > 90 | % |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | 1.0E+16 | ohms·cm | ASTM D257 |
| Dielectric strength | > 22 | kV/mm | ASTM D149 |
| Dielectric constant | |||
| 23 ℃，60 Hz | 2.30 | ASTM D150 | |
| Dissipation factor | |||
| 23℃，60 Hz | 5.0E-4 | ASTM D150 |
| Process Conditions | |||
|---|---|---|---|
| Extrusion | Nominal value | Unit | Test method |
| Barrel 1 zone temperature | 146 | °C | |
| Barrel 2 zone temperature | 155 | °C | |
| Barrel 3 zone temperature | 163 | °C | |
| Barrel 4 zone temperature | 171 | °C | |
| Nozzle temperature | 177 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Base Resin |
| 3. Masterbatch |
| 4. 0.20 MPa |
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