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Silane cross-linked semiconductive shielding material for cross-linked polyethylene insulated cable

This product is suitable for the conductor shielding of silane overhead insulated cables. It is applicable for high-speed extrusion in one-plus one equipment or double-layer co-extrusion equipment and can be cross-linked by steam or water boiling.

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Product details

Product model and name

PYJGD Silane cross-linked semiconductive shielding material for cross-linked polyethylene insulated cable conductors

Performance indicators (typical values)： enforce standards JB/T 10738-2007

Serial number	Test project		Unit	Indicator	Typical value
1	Density		g/cm3	≤1.2	1.11
2	Tensile strength		MPa	≥12	13.5
3	Elongation at break		%	≥180	242
4	Air thermal aging	Test conditions		135℃×168h
		Rate of change of tensile strength	%	±30	+8
		Rate of change in elongation at break	%	±30	-20
5	（-40℃）Impact embrittlement performance		Number of failures	≤15/30	0/30
6	Thermal extension	Test conditions	/	200℃×0.2MPa×15min
		Elongation under load	%	≤100	70
		Permanent deformation after cooling	%	≤15	5
6	Volume resistivity at 20℃		Ω.cm	≤100	43
7	Volume resistivity at 90℃		Ω.cm	≤5000	342
8	Volume resistivity after air thermal aging	Test conditions	/	100℃×168h
8	Volume resistivity after air thermal aging	Volume resistivity at 90℃	Ω.cm	≤1000	280

Application process reference

It is recommended that the temperature of the extruder body be 125℃ to 140℃. Neck temperature: 140℃ - 150℃ Head temperature: 145℃ to 155℃. It is recommended to use a 20× 60-mesh double-layer filter screen.

Packaging and storage

1) Semiconductive shielding material A is vacuum-packed in aluminum foil bags, with each bag having A net weight of 20kg. Material B is also vacuum-packed in aluminum foil bags, with each bag having a net weight of 10kg. When in use, mix one bag of A and one bag of B evenly and then extrude.

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

3) 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.