| About |
|---|
| Visico FR4450 / LE4433 is a scorch retardant, moisture-crosslinking polyethylene compound for low voltage insulation. FR4450/LE4433 is a black, zero halogen, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. The combination of a VISICO FR4450 base resin, and the LE4433 catalyst, provides a highly scorch retardant compound with excellent thermal stability and good flame retardant properties. FR4450/LE4433 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. A finished compound that is composed of 93 parts of FR4450 mixed with 7 parts of LE4433 is recognized by Underwriters Laboratories as VISICO FR4450/LE4433 93/7. FR4450/LE4433 is designed to reduce normal PE flame spread characteristics and achieve an HB-1 flame rating on 14 AWG wires and larger. LE4433 also provides, in addition to catalyst, a stabilization package containing suitable antioxidants, a metal deactivator and fine particle size carbon black for UV weather resistance. Properly mixed, during the extrusion process, FR4450/LE4433 exhibits excellent thermal stability to oxidation. Applications Visico FR4450 / LE4433 is recommended for use as insulation and sheath for low voltage control cables and power cables up to 6kv in rating. Specifications UL 44&& |
| Product Description | |
|---|---|
| Supplier | Borealis AG |
| Generic | PE |
| Material Status | Commercial: Active |
| Features | Weather resistance is good,Crosslinked,Halogen free,Flame Characteristics,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 | |||
| — | 0.940 | g/cm³ | |
| — | 1.10 | g/cm³ | |
| Melt Flow Rate | |||
| 190℃，2.16kg | 0.70 | g/10min | ASTM D1238 |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | MPa | ASTM D412 | |
| Tensile strain | |||
| fracture | > 300 | % | ASTM D412 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| High temperature creep | |||
| Elongation under load: 150 ℃ | < 50 | % | |
| Permanent deformation: 150 ℃ | < 5.0 | % |
| 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 | |||
| 50 Hz | < 3.00 | ASTM D150 | |
| Dissipation factor | < 3.0E-3 | ASTM D150 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Extreme oxygen index | 32 | % | ASTM D2863 |
| Corrosive gases in flue gas | 15.0 | µS/cm | IEC 60754-2 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| Horizontal Flame Test（14 AWG，762.0 µm） | Pass | UL 44 |
| Process Conditions | |||
|---|---|---|---|
| Extrusion | Nominal value | Unit | Test method |
| Barrel 1 zone temperature | 140 | °C | |
| Barrel 2 zone temperature | 140 | °C | |
| Barrel 3 zone temperature | 150 | °C | |
| Barrel 4 zone temperature | 160 | °C | |
| Barrel 5 zone temperature | 170 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. LE4433 |
| 3. Visico FR4450 |
| 4. 0.20 MPa |
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