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B2 grade low smoke zero halogen flame retardant polyolefin sheath material TWH1900, specially design

This product is mainly applied to the outer sheath of power cables with GB41247 B2 class flame retardant requirements. When used in small-sized cables (OD≤28mm), it can meet the B2 grade flame retardant requirements in combination with flame retardant fillers.

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Product details

Product model and name:

TWH1900 B2 grade low smoke zero halogen flame retardant polyolefin sheath material

Performance indicators (typical values) : Execution standard: GB/T32129

Serial number	Test project		Unit	Indicator	Typical value
1	Tensile strength		MPa	≥10	12.5
2	Elongation at break		%	≥150	168
3	Air thermal aging	Test conditions	100℃×168h
		Maximum rate of change of tensile strength	%	±30	7
		The maximum rate of change of elongation at break	%	±30	-12
4	Volume resistivity at 20℃		Ω.m	≥1×1011	2×1011
5	Oxygen index		%	≥38	40
6	Hardness		ShoreA	96±2	96
7	Combustion releases halogen acid gas	The contents of HCI and HBr	%	≤0.5	0
		HF content	%	≤0.1	0
		pH		≥4.3	6.2
		Electrical conductivity	μS/m	≤10	3.1
8	Density		g/cm3	1.57±0.02	1.57

Application process reference

It is recommended that the temperature of the extruder body be 125 to 165℃. Head temperature: 165℃ to 170℃. It is recommended to use low smoke zero halogen screws with a compression ratio of 1.2 to 1.6. The maximum melt temperature is suggested to be controlled within 180℃.

Packaging and storage

The product is packed in moisture-proof aluminum foil polyethylene composite film bags, with 25kg per bag. It is transported by single-pallet stacking, with the weight of each pallet being 1000kg or 1200kg.

It should be stored in a clean, dry and well-ventilated environment. The suitable storage temperature is 0℃ to 35℃.

The product is vacuum-packed. It is strictly prohibited to stack it up and down during transportation and storage.

The validity period is 6 months under suitable storage conditions.