Product Details

Ceramic fire-retardant polyolefin granule-medium voltage cable

Properties for Ceramic fire-retardant polyolefin granule-medium voltage cable

Item	Uint	Standard
Item	Uint	Standard	Typical	Typical	Typical
Density	g/cm3	---	1.48	1.46	1.58
Hardness	Shore A/D	---	95/52	95/50	95/52
Tensile Strength	≥MPa	6	12.2	11.7	10.6
Elongation at break	≥%	100	218	240	75
Thermal Aging	℃xh		100*240
Tensile Strength	≥MPa	6	13.8	13.0	---
TS Change rate	≤%	±30	+13	+11	---
Elongation at break	≥%	70	203	219	---
EB Change rate	≤%	±30	-7	-9	---
Volume Resistivity,at	≥Ω·m	1.0*10¹⁰	3.8*10¹⁴	2.8*10¹³	2.0*10¹⁴
Dielectric Strength	≥Mv/m	18	28	26	26
Impact Brittleness Temperature	≤		-65	-45	-45
Impact Brittleness Temperature	≤	15/30	0/30	0/30	0/30
Smoke Density			GB/T 8323
Flaming	≤	100	51	52	40
Non flaming	≤	250	149	151	110
Acidity of gases evolve	(PH)≥	4.3	6.6	6.4	6.4

Conductivity of gases evolved	≤μs/mm	10	1.0	0.5	0.5
Content of halogen acids	≤mg/g	5	0	0	0
Toxicity	≤	2.5	0.3	0.5	0.6
environmental stress crack resistance	≥96h	pass	pass	pass	pass
thermal stress crack resistance	≥96h	pass	pass	pass	pass
burn properties
bending strength	≥MPa	---	5.9	9.8	8.9
Volume Resistivity	≥Ω·m	---	≥2.0*10¹⁸	≥2.0*10¹⁸	≥2.0*10¹⁸
Dielectric Strength	≥Mv/m	---	≥40	≥40	≥40
ceramic retention	≥%	---	80.2	82.9	79

Description for Ceramic fire-retardant polyolefin granule-medium voltage cable

Ceramifiable, Flame retardant and Fire retardant POE compound for medium voltage cable is based on POE resin, produced and pelletized by special technology with adding special modifier, flame retardant, anti-oxidant and other special additives.

Processing Technics for Ceramic fire-retardant polyolefin granule-medium voltage cable

The compound can be processed with conventional extruder, and the screw with a minimum 20:1 L/D and a compression ratio of 1.2~1.5 is recommended.

The following temperature profile of extruder is recommended:

Heat Zone	Zone 1	Zone 2	Zone 3	Zone 4	Head	Die
Temperature ℃	150	160	170	170	175	175

Note: Compound should be dried at 70-80℃ before use, which has storage time exceeding two months.

Storage and transport for Ceramic fire-retardant polyolefin granule-medium voltage cable

Packaging: 25kg/bag, Aluminum foil and PE membrane inside bag, and kraft paper outside bag.

Storage and transport: Avoiding in direct basked and weathering. The storage place should be in clean, cool, dry, and ventilated conditions.