Compound E3M-P

Peroxide crosslinkable compound for medium and heavy wall heat-shrinkable moulded parts, for aerial, underground and direct burial installation.

Compound properties

Compound E3M-P is a peroxide crosslinkable, heat curable compound offering excellent mechanical properties and strain relief. The carefully selected combination of polymers, processing aids and additives makes this compound an excellent choice for the manufacturing of medium and thick wall heat-shrinkable moulded parts for indoor and outdoor applications in the power and telecom market.
The compound is easy processable on press-moulding and injection moulding equipment.

Compound characteristics

Color Black
Specific gravity ASTM D 792 1.10
Water absorption ASTM D 570 0.15%
MFI (160ºC, 21.6kg) ASTM D 1238 6-8 (*)

Moulding

Recommended temperature profile: 120ºC - 135ºC

Crosslinking

Recommended time min. 60 seconds (**)
Recommended mass temperature Mimimum 175ºC
Hot-set elongation 60 - 100% (20 gr/mm2 and 200ºC)

Packaging

The peroxide crosslinkable PTL compounds are supplied in bags of 25 kg or in octabins.
The compound should be stored below 30ºC and protected from direct sunlight to achieve a shelf life of 6 months.

Properties of the moulded parts

Heat-shrinkable moulded products made of this compound will show a continuous operating temperature of 110ºC. The excellent heat-ageing properties will allow the product to withstand 250ºC for short periods. The non-corrosive properties and its excellent resistance against ingress of chemicals, acids and oils makes this compound an ideal choice for harsh environments.

Technical values

Property Test Method Typical value
 
Physical
Tensile strenght at break ASTM D 638 17 MPa
Elongation at break ASTM D 638 400%
 
Thermal
Continuous operating temperature   -75ºC to +110ºC
Minimum shrink temperature   120ºC
Heat shock (4hrs @ 250ººC) ASTM D 2671 No cracking, dripping, flowing
Flowing Heat ageing (168hrs @ 150ºC) ASTM D 638 Elongation 250%
Low temp. flexibility (-55ºC) ASTM D 2671C No cracking
 
Chemical
Fungus resistance   Inert
Fluid resistance ESI 09-13 Excellent
Copper Corrosion ASTM D 2671 B Excellent
 
Electrical
Dielectric strength ASTM D 2671 10-20 kV/mm
Volume resistivity ASTM D 257 10 @ 15 ohm.cm

International specifications
- ESI 09-13

(*) in non-crosslinked state (**) depending on wall-thickness.
 
 
 

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