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Silane cross-linked polyethylene insulation material for low retraction two-step method cables YJG-2

This product is mainly made of linear low-density polyethylene, with the addition of coupling agents and other additives, and is produced through mixing, plasticizing and granulation. The two-step production process is adopted, where Component A is the grafting material and Component B is the catalytic masterbatch. It is mainly used for the production of low-voltage cables and control cables of 10kV and below.

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Product details

Performance indicators (typical values) : Execution standard: JB/T10437-2004

Serial number	Test project		Unit	YJG-10
1	Tensile strength ≥		Mpa	13. 5
2	Elongation at break ≥		%	350
3	Impact embrittlement performance(-76℃)≤		N/A	15/ 30
4	135℃ , 168h Air thermal aging	Rate of change of tensile strength≤	%	±20
4	135℃ , 168h Air thermal aging	Rate of change in elongation at break≤	%	±20
5	Thermal extension 200℃,0.2MPa, 15min	Thermal extension≤	%	100
5	Thermal extension 200℃,0.2MPa, 15min	Permanent deformation rate after cooling≤	%	5
6	50Hz、20℃	Relative dielectric constant≤		2.35
6	50Hz、20℃	Dielectric loss factor≤		0.001
7	Volume resistivity(1 kV、20℃)≥		Ω·cm	1.0× 1014
8	Dielectric strength≥		MV/ m	25
9	Gel content≥		%	80

Application process reference

It is recommended that the temperature of the extruder body be between 160℃ and 200℃. Neck temperature: 200℃ Head temperature: 210℃ to 215℃.

Crosslinking conditions

Crosslinking conditions	Temperature	Insulation thickness (1mm)
Warm water cross-linking	≥90℃	≥4h
Steam crosslinking	≥90℃	≥6h

Packaging and storage

The product is packed in moisture-proof aluminum foil/polyethylene composite film bags. Usually, the AB combination net weight is 25kg per unit and is transported by single-pallet palletizing. The net weight specifications of single-pallet palletizing are 1000kg, 1250kg and 1500kg.

It should be stored in a clean, dry and well-ventilated environment, with an appropriate storage temperature ranging from 0℃ to 35℃.

The validity period is 6 months when the packaging is sealed. After opening, it is recommended that Component A be used within 24 hours, and the mixture of A and B should be used within 8 hours. Exceeding the recommended time limit may affect the quality of use due to pre-crosslinking.