Visico™ LE4423/LE4460/ LE4437

About
Visico LE4423/LE4460/LE4437 LE4423/LE4460/LE4437 is a natural, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. The combination of a VISICO LE4423 base resin, along with the LE4460 brominated flame retardant masterbatch and the LE4437 catalyst, provides a highly scorch retardant compound with excellent thermal stability and good retardant flame properties. LE4423/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. A finished compound that is composed of 75 parts of LE4423 mixed with 20 parts of LE4460 and 5 parts of LE4437 is recognized by Underwriters Laboratories as VISICO HORIZONTAL. VISICO HORIZONTAL is designed to reduce normal PE flame spread characteristics and achieve an HB-1 flame rating on 14 AWG wires and larger. LE4437 also provides, in addition to catalyst, a stabilization package containing suitable antioxidants, a metal passivator and a metal deactivator. Properly mixed, during the extrusion process, LE4423/LE4460/LE4437 exhibits excellent thermal stability to oxidation. LE4423/LE4460/LE4437 is readily pigmented to a variety of colors using standard wire & cable color concentrates designed for thermoplastic or crosslinked polyethylene. UV wether resistance is obtained by the addition of a suitable carbon black or UV additive. Using Visico LE4432 in place of LE4437 combines a tin catalyst along with the proper carbon black to provide a black, UV resistant, moisture crosslinking cable insulation.&&

About

Visico LE4423/LE4460/LE4437 LE4423/LE4460/LE4437 is a natural, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. The combination of a VISICO LE4423 base resin, along with the LE4460 brominated flame retardant masterbatch and the LE4437 catalyst, provides a highly scorch retardant compound with excellent thermal stability and good retardant flame properties. LE4423/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. A finished compound that is composed of 75 parts of LE4423 mixed with 20 parts of LE4460 and 5 parts of LE4437 is recognized by Underwriters Laboratories as VISICO HORIZONTAL. VISICO HORIZONTAL is designed to reduce normal PE flame spread characteristics and achieve an HB-1 flame rating on 14 AWG wires and larger. LE4437 also provides, in addition to catalyst, a stabilization package containing suitable antioxidants, a metal passivator and a metal deactivator. Properly mixed, during the extrusion process, LE4423/LE4460/LE4437 exhibits excellent thermal stability to oxidation. LE4423/LE4460/LE4437 is readily pigmented to a variety of colors using standard wire & cable color concentrates designed for thermoplastic or crosslinked polyethylene. UV wether resistance is obtained by the addition of a suitable carbon black or UV additive. Using Visico LE4432 in place of LE4437 combines a tin catalyst along with the proper carbon black to provide a black, UV resistant, moisture crosslinking cable insulation.&&

Product Description
Supplier	Borealis AG
Generic	PE
Material Status	Commercial: Active
Features	Weather resistance is good,Flame Characteristics,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
Base Resin	0.923	g/cm³	ASTM D792
—	0.941	g/cm³	ASTM D792
—	2.00	g/cm³	ASTM D792
Melt Flow Rate
190℃，2.16kg	0.90	g/10min	ASTM D1238

MECHANICAL	Nominal value	Unit	Test method
tensile strength	16.5	MPa	ASTM D638
Tensile strain
fracture	300	%	ASTM D412
fracture	300	%	ASTM D638

elastic body	Nominal value	Unit	Test method

THERMAL	Nominal value	Unit	Test method
High temperature creep			ICEA T-28-562
Elongation under load: 150 ℃	< 50	%	ICEA T-28-562
Permanent deformation	< 5.0	%	ICEA T-28-562

Aging performance	Nominal value	Unit	Test method
Mechanical properties of air oven after aging
121 ℃, 168 hr, rate of change in tensile strength	< -10	%	IEC 60811

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
60 Hz	2.50		ASTM D150
Dissipation factor
60 Hz	5.0E-4		ASTM D150

Supplementary information	Nominal value	Unit	Test method
Horizontal Flame Test	Pass

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	177	°C
Nozzle temperature	177	°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. Catalyst
3. Masterbatch
4. 0.20 MPa
5. 14 AMG-30 mil
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