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Master Bond adhesives

Borealis Visico™ ME4425/LE4432 Scorch Retardant, Moisture-Crosslinking Polyethylene Compound for Low Voltage Insulation  (discontinued **)
Categories: Polymer; Thermoplastic; Polyethylene (PE); Medium Density (MDPE); Medium Density Polyethylene (MDPE), Extruded

Material Notes: Visico ME4425/LE4432 is a black, moisture-induced crosslinking polyethylene compound that is designed for use as low voltage wire insulation and jacketing. ME4425 is a medium-density ethylene vinylsilane copolymer that offers improved deformation resistance, toughness and durability over convention low-density ethylene vinylsilane copolymers. The combination of a Visico base material, ME4425, and a tin catalyst masterbatch, LE4432, provides a highly scorch retardant compound with excellent thermal stability. ME4425/LE4432 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.

LE4424/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 PropertiesMetricEnglishComments
Density 0.930 g/cc0.0336 lb/in³ME 4425; ASTM D792
 1.05 g/cc0.0379 lb/in³LE 4432; ASTM D792
Melt Flow 0.70 g/10 min0.70 g/10 minME 4425; ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield >= 18.6 MPa>= 2700 psiHeat Aging (7 days at 121°C); ASTM D412
 20.7 MPa3000 psiASTM D412
Elongation at Break <= 50 %<= 50 %Hot Creep Test (150°C, .2 MPa); ICEA T-28-562
 315 %315 %Heat Aging (7 days at 121°C); ASTM D412
 350 %350 %ASTM D412
Tensile Set <= 5.0 %<= 5.0 %Hot Creep Test (150°C,.2 MPa); ICE T-28-562
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 1.00e+16 ohm-cm1.00e+16 ohm-cmASTM D257
Dielectric Constant 2.3
@Frequency 60 Hz
2.3
@Frequency 60 Hz
ASTM D150
Dielectric Strength >= 21.7 kV/mm>= 550 kV/inASTM D149
Dissipation Factor 0.00050
@Frequency 60 Hz
0.00050
@Frequency 60 Hz
ASTM D150
 
Processing PropertiesMetricEnglishComments
Middle Barrel Temperature >= 170 °C>= 338 °F
Front Barrel Temperature >= 170 °C>= 338 °F
Die Temperature >= 185 °C>= 365 °F
Head Temperature >= 185 °C>= 365 °F

**
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PBOREA203 / 27510

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