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Ensinger PEI

Borealis Visico™ LE4421/LE4460/LE4437 Scorch Retardant, Moisture-Crosslinking Polyethylene Compound for Low Voltage Installation  (discontinued **)
Categories: Polymer; Thermoplastic; Polyethylene (PE); Low Density (LDPE); Low Density Polyethylene (LDPE), Wire/Cable Grade
Material Notes: Visico LE4421/LE4460/LE4437 is a natural, halogen-based, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. The combination of the Visico LE4421 base resin, along with the LE4460 brominated flame retardant masterbatch and the LE4437 tin catalyst masterbatch provides a highly scorch retardant compound with excellent thermal stability and good flame properties. LE4421/LE4460/LE4437 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.

LE4421/LE4460/LE4437 is recommended for use as insulation for low voltage control cables and power cables up to 6 kV in rating.

Information provided by the Manufacturer.
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Physical PropertiesMetricEnglishComments
Density 0.923 g/cc0.0333 lb/in³LE 4421; ASTM D792
 0.941 g/cc0.0340 lb/in³LE 4437; ASTM D792
 2.00 g/cc0.0723 lb/in³LE 4460; ASTM D792
Melt Flow 0.90 g/10 min0.90 g/10 minLE 4421; ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield >= 14.58 MPa>= 2115 psiHeat Aging (7 days at 121°C); ASTM D412
 16.2 MPa2350 psiASTM D412
Elongation at Break <= 50 %<= 50 %Hot Creep Test (150°C, .2 MPa); ICEA T-28-562
 270 %270 %Heat Aging (7 days at 121°C); ASTM D412
 300 %300 %ASTM D412
Tensile Set <= 5.0 %<= 5.0 %Hot Creep Test (150°C,.2 MPa); ICE T-28-562
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 1.00e+16 ohm-cm1.00e+16 ohm-cmASTM D257
Dielectric Constant 2.3
@Frequency 60 Hz		2.3
@Frequency 60 Hz		ASTM D150
Dielectric Strength >= 21.7 kV/mm>= 550 kV/inASTM D149
Dissipation Factor 0.00050
@Frequency 60 Hz		0.00050
@Frequency 60 Hz		ASTM D150
 
Processing PropertiesMetricEnglishComments
Middle Barrel Temperature >= 171 °C>= 340 °F
Front Barrel Temperature >= 146 °C>= 295 °F
Die Temperature >= 177 °C>= 350 °F
Head Temperature >= 177 °C>= 351 °F
 
Descriptive Properties
Horizontal Flame TestPass14AWG-30mil, UL 1581

**
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