Borealis Visico™ LE4423/LE4437 Scorch Retardant, Moisture-Crosslinking Polyethylene Compound for Low Voltage Installation

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Borealis Visico™ LE4423/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 LE4423/LE4437 is a mature, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. The combination of a Visico base material, LE4423, and a tin catalyst masterbatch, LE4437 provides a highly scorch retardant compound with excellent thermal stability. LE4432/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 of die. LE4437 should be added to LE4432 directly in the extruder hopper by dry blending at a ratio of 5 parts LE4437 to 95 parts LE4423. LE4423/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 Properties	Metric	English	Comments

Density	0.923 g/cc	0.0333 lb/in³	LE 4423; ASTM D792
	0.941 g/cc	0.0340 lb/in³	LE 4437; ASTM D792
Melt Flow	0.90 g/10 min	0.90 g/10 min	LE 4423; ASTM D1238

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	>= 13.28 MPa	>= 1926 psi	Heat Aging (7 days at 121°C); ASTM D412
	14.8 MPa	2140 psi	ASTM 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 Properties	Metric	English	Comments
Electrical Resistivity	1.00e+16 ohm-cm	1.00e+16 ohm-cm	ASTM D257
Dielectric Constant	2.3 @Frequency 60 Hz	2.3 @Frequency 60 Hz	ASTM D150
Dielectric Strength	>= 21.7 kV/mm	>= 550 kV/in	ASTM D149
Dissipation Factor	0.00050 @Frequency 60 Hz	0.00050 @Frequency 60 Hz	ASTM D150

Processing Properties	Metric	English	Comments
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 Test	Pass		14AWG-30mil, UL 1581

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PBOREA199 / 27506

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