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

Halogen free
AEI TP-0840 High char high fire performance HFFR sheathing
Enhanced fire performance, low-smoke, halogen-free, thermoplastic compound for cable insulation and sheathing

Test	Test method	Unit	Typical value
Physical properties and mechanical properties
Density	BS 2782 Pt. 6 Mtd 620A-D	g/cm3	1.50
Melt flow rate (21.6kg at 150°C)	AEI method	g/10min	8.5
Tensile strength	IEC 60811-1-1	N/mm²	12.5
Elongation at break	IEC 60811-1-1	%	160
Typical ageing behaviour after 168 hours at 100°C
Tensile strength Elongation at break	IEC 60811-1-2 IEC 60811-1-2	% variation % variation	+10 -15
Thermo mechanical properties
Hot pressure deformation at 90°C	IEC 60811-3-1	%	40
Cold bend test at -30°C	IEC 60811-1-4	-	pass
Elongation at break at -30°C	IEC 60811-1-4	%	50 (pass)
Fire & smoke properties
Oxygen Index	BS ISO 4589-2	%	32
Temperature Index Halogen gas evolution	BS ISO 4589-3 IEC 60754-1	°C %	>300 <0.5

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
TP-0840 has an unlimited shelf life. However, the following precautions should be observed:-
• Packaging should remain sealed
• Avoid storage outside and in direct sunlight.

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

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