Fireproof Cables

  

 

 

 

Material Properties
Insulation & Sheath Material Properties Related To Fireproof of Cable

Halogen free
AEI TP543C High performance HFFR sheathing

Thermoplastic, low-smoke, halogen-free, flame retardant compound for cable insulation and sheathing

Test

Testmethod

Unit

Typicalvalue

Physicalpropertiesandmechanicalproperties

Density

BS2782Pt.6Mtd620A-D

g/cm3

1.54

Meltflowrate(21.6kgat150°C)

AEItestmethod

g/10min

7

Tensilestrength

IEC60811-1-1

N/mm²

13

Elongationatbreak

IEC60811-1-1

%

170

TearStrength

BS6469

N/mm

6

Typicalageingbehaviourafter7daysat100°C

Tensilestrength

IEC60811-1-2

%variation

+12

Elongationatbreak

IEC60811-1-2

%variation

-12

Thermomechanicalproperties

 

 

 

Hotpressuredeformationat90°C

IEC60811-3-1

%

35

Coldbendtestat-30°C

IEC60811-1-4

 

pass

Elongationatbreakat-30°C

IEC60811-1-4

%

50(pass)

Fire&smokeproperties

 

 

 

OxygenIndex

BSISO4589-2

%

41

TemperatureIndex

HalogenAcidGasEvolution

BSISO4589-3

IEC60754-1

°C

%

>300

<0.5

ElectricalProperties

 

 

 

InsulationConstantKiat20°C

IEC60502

MΩ.km

7.7

InsulationConstantKiat90°C

IEC60502

MΩ.km

0.057

Extruder
An extruder with an L/D ratio (length/diameter) of 15-24 and an extruder screw with a compression ratio 1.5:1 or less are recommended.
Extruder temperature conditions
It is important that the melt temperature is not allowed to rise above 170°C.
As a guide the following temperature profile is recommended:-

Zone1

Zone2

Zone3

Zone4

Head

Die

120°C

130°C

140°C

150°C

160°C

160°C

This profile will vary slightly depending on extruder type, head design and output.
Screw water temperature:Depends upon screw design, but should be 30-50°C
Recommended screen pack: 50 (mesh apertures per linear inch) or 300 micron
Masterbatches
Addition of approved colour masterbatches, including black, up to a maximum of 1%, has no detrimental effect on the properties.
It is recommended that all masterbatches should be thoroughly dried at 60°C for 8 hours or at 80°C for 4 hours in a de-humidifying drier.
Storage and shelf life
TP543C has an unlimited shelf life. However, the following precautions should be observed:-
• Packaging should remain sealed
• Avoid storage outside and in direct sunlight.

Caledonian Cables |FAQ |© 2020