Borealis Visico™/Ambicat™ LE4421/LE4476 Polyethylene Compound, Crosslinkable

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Borealis Visico™/Ambicat™ LE4421/LE4476 Polyethylene Compound, Crosslinkable
Categories:	Polymer; Thermoplastic; Polyethylene (PE)
Material Notes:	Visico™ LE4421 / Ambicat™ LE4476 is a silane crosslinkable natural compound designed for low voltage power cables up to 6kV. The base material Visico™ LE4421 in combination with the catalyst masterbatch Ambicat™ LE4476 will accelerate the moisture-induced crosslinking reaction. The system is highly active and crosslinks quickly at ambient conditions, in sauna or in hot water. When properly mixed, addition of 5 parts of Ambicat™ LE4476 to 95 parts of Visico™ LE4421 , insulation with excellent thermo-oxidative stability, also in contact with copper as well as aluminum, is achieved. If the insulation is designed to meet the thermo-oxidative ageing demand requiring by IEC 60502 at 150°C in contact with copper, addition of 9 parts Ambicat™ LE4476 to Visico™ LE4421 is recommended. Applications: insulation of low voltage cables for the range up to 6 kV. Additives: Visico™ LE4421 / Ambicat™ LE4476 contains antioxidant, metal deactivator and a drying agent. Visico™ LE4421 contains a permanent scorch retardant additive, ensuring safe processing and enabling the use of a highly active crosslinking catalyst. Specifications: Visico™ LE4421 / Ambicat™ LE4476 in combination meets these applicable requirements when processed using sound extrusion and testing procedure: ASTM D 1248 Type I, Class A, Category 4; HD 603 S1; HD 604 S1; IEC 60502-1; NEMA WC 70; and NEMA WC 71. Information provided by Borealis AG
Key Words:	XLPE
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Physical Properties	Original Value	Comments

Density	0.923 g/cc	ISO 1183/ISO 1872-2
ESCR 10% Igepal®	>= 96 hour @Temperature 50.0 °C	F20; IEC 60811-4-1/B
Melt Flow	1.0 g/10 min @Load 2.16 kg, Temperature 190 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Hardness, Shore D	52	1s; ISO 868
Tensile Strength at Break	<= 10.5 MPa	after aging 168h, 150°C, 9% catalyst); IEC 60811-1-2
	<= 11.25 MPa	after aging (240h, 135°C, 5% catalyst); IEC 60811-1-2
	>= 15.0 MPa	250mm/min; ISO 527
Elongation at Break	>= 300 %	250mm/min; ISO 527
Tensile Set	0.00 % @Temperature 200 °C	Permanent Deformation at 0.2 MPa after 60% elongation under load; IEC 60811-2-1

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+6 ohm-cm	IEC 60093
Dielectric Constant	2.3 @Frequency 50000 Hz	IEC 60250
Dielectric Strength	>= 22.0 kV/mm	IEC 60243
Dissipation Factor	0.00050 @Frequency 50000 Hz	IEC 60250

Thermal Properties	Original Value	Comments
Brittleness Temperature	<= -76.0 °C	ASTM D746

Processing Properties	Original Value	Comments
Zone 1	150 °C
Zone 2	170 °C
Zone 3	170 °C
Zone 4	170 °C
Die Temperature	170 °C
Shelf Life	15.0 Month

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