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

Halogen free
AEI SX-0610:CM601 General purpose silane crosslinkable HFFR insulation and sheathing
Low smoke, low-toxicity, halogen-free, flame-retardant compound for insulation of LV cables and
sheathing of all types of cables

Physical properties and mechanical properties
Melt Flow Rate (21.6kg @150°C)	AEI Method	g/10 minutes	8
Tensile strength	IEC 60811-1-1	N/mm²	13
Elongation at break	IEC 60811-1-1	%	160
Density	BS 2782 Pt. 6 Mtd 620A-D	g/cm3	1.47
Typical ageing behaviour after 7 days at 135°C
Tensile strength Elongation at break	IEC 60811-1-2 IEC 60811-1-2	% variation % variation	+5 -10
Cure assessment by hot set test (forced cured at 80°C in water)
Elongation under load (20N/cm2 at 200°C)	IEC 60811-2-1	%	50
Permanent elongation after cooling	IEC 60811-2-1	%	0
Thermo mechanical properties
Hot Pressure Deformation (100°C, K=1)	IEC 60811-3-1	%	40
Fire and smoke properties
Smoke density	ASTM 2843:2004	%	<3.5
Oxygen index	BS ISO 4589-2	%	29
Temperature index	BS ISO 4589-3	oC	245
Halogen Acid gas evolution	IEC 60754-1	%	<0.5
Corrosivity of Gases	IEC 60754-2	pH	4.6
Conductivity of gases	IEC 60754-2	µS/cm	13
Electrical properties at 90°C
Insulation resistance	IEC 60502	MΩ.km	5
Insulation resistance Constant (K) Volume resistivity	IEC 60502 IEC 60502	MΩ.km Ohm.cm	1.5 4.4 x 1012

Extruder
Many modern thermoplastic extruders will process the material, although a screw designed to give good
homogenisation without excessive shear (which could cause unacceptable increases in melt temperature) should be used. An extruder with an L/D ratio (length/diameter) of 15-24 and an extruder 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:-

Zone1	Zone2	Zone3	Zone4	Head	Die
130°C	140°C	145°C	150°C	160°C	160°C

This profile will vary slightly depending on extruder type, head design and output.
Screw water temperature40-60°C
Recommended screen pack: 50 (mesh apertures per linear inch) or 300 micron
Crosslinking or Cure
A satisfactory cure can be obtained either by immersion in hot water or exposure to low pressure steam at a temperature up to 70°C. At the higher 10% addition levels of CM601 catalyst and under the correct conditions a satisfactory cure is possible at ambient temperature and humidity.
Catalyst and Colour Masterbatches
CM601 catalyst masterbatch is normally added at between 5-10%.
Addition of approved colour masterbatches, including black, up to a maximum of 1%, has no detrimental effect on the properties or crosslinking capability.
It is recommended that all masterbatches including those containing the catalyst should be thoroughly dried before use for 8 hours at 60°C or 4 hours at 80°C in a de-humidifying drier.
Storage and Shelf Life
SX-0610 normally has shelf life of at least 6 months from the date of manufacture. The storage of silane crosslinkable
compounds in cool dry conditions will maximise useful shelf life. Other precautions are:-
• Packaging should remain sealed.
• Avoid temperature above 25°C.
• Avoid storage outside and in direct sunlight.
• Use within 8 hours of opening packaging.

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

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