Visico™ FR4450/LE4439

About
Visico FR4450/LE4439 is a scorch retardant, moisture-crosslinking polyethylene compound for low voltage insulation. FR4450/LE4439 is a natural, 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 LE4439 catalyst, provides a highly scorch retardant compound with excellent thermal stability and good retardant flame properties. FR4450/LE4439 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 95 parts of FR4450 mixed with 5 parts of LE4439 is recognized by Underwriters Laboratories as VISICO FR4450/LE4439 95/5. FR4450/LE4439 is designed to reduce normal PE flame spread characteristics and achieve an HB-1 flame rating on 14 AWG wires and larger. LE4439 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, FR4450/LE4439 exhibits excellent thermal stability to oxidation. FR4450/LE4439 is readily pigmented to a variety of colors using standard wire & cable color concentrates designed for thermoplastic or crosslinked polyethylene. Application FR4450/LE4439 is recommended for use as insulation and sheath for low voltage control cables and power cables up to 6kv in rating. Specifications UL 44&&

About

Visico FR4450/LE4439 is a scorch retardant, moisture-crosslinking polyethylene compound for low voltage insulation. FR4450/LE4439 is a natural, 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 LE4439 catalyst, provides a highly scorch retardant compound with excellent thermal stability and good retardant flame properties. FR4450/LE4439 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 95 parts of FR4450 mixed with 5 parts of LE4439 is recognized by Underwriters Laboratories as VISICO FR4450/LE4439 95/5. FR4450/LE4439 is designed to reduce normal PE flame spread characteristics and achieve an HB-1 flame rating on 14 AWG wires and larger. LE4439 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, FR4450/LE4439 exhibits excellent thermal stability to oxidation. FR4450/LE4439 is readily pigmented to a variety of colors using standard wire & cable color concentrates designed for thermoplastic or crosslinked polyethylene. Application FR4450/LE4439 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	Crosslinked,Halogen free,Flame Characteristics,Inoxidizability,Heat Stabilized,Good coloring
Availabilitys	Africa & Middle East ,North America,Latin America,Asia Pacific,Europe

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
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	< 2.0E-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. LE4439
3. Visico FR4450
4. 0.20 MPa
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