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PEXIDAN® HF SX545

1 of 49 products in this brand
PEXIDAN® HF SX545 pre-grafted base is mixed with a crosslinking catalyst masterbatch CM540U in the ratio 95:5. Crosslinking is obtained by exposure to moist or hot water immersion only. PEXIDAN® HF SX545 has been designed to meet the requirements of IEC 60092-351 HF90, EN 50363-5, EI5 type, EN 50525-1 and EN 50525-3-41.

Polymer Name: Crosslinked Polyethylene (XLPE / PEX)

Processing Methods: Extrusion

End Uses: Cables, Wires

Density: 1490.0 - 1490.0 kg/m³

Tensile Strength: 12.0 - 12.0 MPa

Technical Data Sheet

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Identification & Functionality

Plastics & Elastomers Functions
Technologies

Features & Benefits

Labeling Claims
Key Characteristics

Low smoke, low toxicity, halogen free, flame retardant, silane crosslinkable compound for insulation of LV cables and sheathing of all types of cables rated up to 125°C

Applications & Uses

Cure Method
Plastics & Elastomers End Uses
Plastics & Elastomers Processing Methods
Applications

Screw Water Temperature: Not mandatory, if present we recommend 40-60°C
Recommended Screen Pack: Spacer ring or breaker plate only

Properties

Physical Form
Appearance
Pellets
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation at Break140%IEC 60811-501
Elongation at Break (After Thermal Aging: 10 days at 150°C)-15% VariationIEC 60811-401
Elongation at Break (After Thermal Aging: 7 days at 135°C)-15% VariationIEC 60811-401
Permanent Elongation (After Cooling)0%IEC 60811-507
Elongation Under Load (20N/cm² at 200°C) (Cure Assessment by Hot Set Test (Force cured at 80°C in Water)50%IEC 60811-507
Tensile Strength12N/mm²IEC 60811-501
Tensile Strength (After Thermal Aging: 10 days at 150°C)15%IEC 60811-401
Tensile Strength (After Thermal Aging: 7 days at 135°C)15%IEC 60811-401
Physical Properties
ValueUnitsTest Method / Conditions
Density1.49g/cm³BS EN ISO 1183-3
Melt Flow Rate (at 150°C / 2.16kg)5g/10minInternal Method
Electrical Properties
ValueUnitsTest Method / Conditions
Insulation Resistance Constant (Ki)0.285Ohm.cmBS EN 50395
Fire & Smoke Properties
ValueUnitsTest Method / Conditions
Conductivity of Gases13μS/cmIEC 60754-2
Temperature Index260°CBS ISO 4589-3
Temperature Index500°FBS ISO 4589-3
Corrosivity of Gases4.6pHIEC 60754-2
Halogen Acid Gas Evolutionmax. 0.5%IEC 60754-1
Limiting Oxygen Index32%BS ISO 4589-2
Smoke Densitymax. 3.5%ASTM 2843:2004
Thermo-Mechanical Properties
ValueUnitsTest Method / Conditions
Cold Bend (at -30°C)PassNo CracksIEC 60811-504
Hot Pressure Deformation (at 100°C) (K=1)30%IEC 60811-508

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Processing

Extruder - An extruder with an L/D ratio (length/diameter) between 15 and 24 and a screw with a compression ratio 1.2:1 are recommended.
Extruder Temperature Conditions - It is important that the melt temperature is not allowed to increase above 160oC. As a guide the following temperature profile is recommended:

  Zone #1 Zone #2 Zone #3 Zone #4 Head Die
Celsius 130°C 140°C 145°C 150°C 160°C 160°C
Fahrenheit 266°F 284°F 293°F 302°F 329°F 329°F

This profile will vary slightly depending on extruder type, head design and output. Initial purging of the extruder should be performed without the addition of catalyst masterbatch to reduce risks of pre-curing.

Packaging & Availability

Packaging Type