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Material Properties
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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 |
|
|
|
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Hotpressuredeformationat90°C |
IEC60811-3-1 |
% |
35 |
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Coldbendtestat-30°C |
IEC60811-1-4 |
|
pass |
|||
Elongationatbreakat-30°C |
IEC60811-1-4 |
% |
50(pass) |
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Fire&smokeproperties |
|
|
|
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OxygenIndex |
BSISO4589-2 |
% |
41 |
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TemperatureIndex HalogenAcidGasEvolution |
BSISO4589-3 IEC60754-1 |
°C % |
>300 <0.5 |
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ElectricalProperties |
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|
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InsulationConstantKiat20°C |
IEC60502 |
MΩ.km |
7.7 |
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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
27 Old Gloucester Street,
London, WC1N 3AX
Tel: 44-207-4195087
Fax: 44-207-8319489
Email:enquiry@fireproof-cables.com