Visico™ LE4423 / Visico™LE4438

About
Visico LE4423 / Visico LE4438 is a silane crosslinkable natural compound designed for low voltage power cables up to 6 kV. Visico LE4423 and Visico LE4438 is a combination of a Visico base material and a catalyst master batch which accelerates the moisture-induced crosslinking reaction. When properly mixed, addition of 5 parts of Visico LE4438 to 95 parts of Visico LE4423 , insulation with excellent thermo-oxidative stability, also in contact with copper as well as aluminium, is achieved.&&

Product Description
SupplierBorealis AG
GenericLDPE
Material StatusCommercial: Active
FeaturesLow density
AvailabilitysAfrica & Middle East ,Asia Pacific,Europe
Process MethodsExtrusion

Technical Data
PHYSICALNominal valueUnitTest method
Density0.923g/cm³ISO 1183
Melt Flow Rate
190℃,2.16kg1.0g/10minISO 1133
ESCR(Environmental Stress Cracking Resistance)
50 ℃, 10% non-ionic surfactant, F20> 96.0hrIEC 60811-4-1/B

MECHANICALNominal valueUnitTest method
Shore hardness
Shore D, 1 second52 ISO 868
tensile strength> 15.0MPaISO 527-2/250
Tensile strain
fracture> 300%ISO 527-2/250

THERMALNominal valueUnitTest method
Embrittlement temperature< -76.0ASTM D746
thermosetting IEC 60811-2-1
Elongation under load: 200 ℃60%IEC 60811-2-1
Permanent deformation: 200 ℃0.0%IEC 60811-2-1

Aging performanceNominal valueUnitTest method
Mechanical properties of air oven after aging
135 ℃, 240 hr, rate of change in tensile strength< 25%IEC 60811

Electrical performanceNominal valueUnitTest method
Volume resistivity> 1.0E+16ohms·cmIEC 60093
Dielectric strength> 22kV/mmIEC 60243-1
Dielectric constant
50 Hz< 2.30 IEC 60250
Dissipation factor
50 Hz< 5.0E-4 IEC 60250

Process Conditions
ExtrusionNominal valueUnitTest method
Barrel 1 zone temperature150°C
Barrel 2 zone temperature170°C
Barrel 3 zone temperature170°C
Barrel 4 zone temperature170°C
Nozzle temperature170°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. Mixture 95:5
3. 0.20 MPa
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