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Anti-scorching chemical cross-linked polyethylene insulating material of 35kV and below SR-YJ-35

This product is mainly made of low-density polyethylene resin through mixing, plasticizing and granulation. It features excellent electrical and physical properties, and has outstanding anti-scorching performance. It can effectively reduce the risk of pre-crosslinking and old scorching during the cable production process, extend the continuous operation cycle of the cable and improve production efficiency.

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Product details

Performance indicators (typical values)： enforce standards：JB/T10437-2004

Serial number	Test project			Unit	Indicator
1	Tensile strength			MPa	≥13.5
2	Elongation at break			%	≥350
3	Air thermal aging		Test conditions		135℃×168h
			Rate of change of tensile strength	%	±20
			Rate of change in elongation at break	%	±20
4	（-76℃）Impact embrittlement performance			N/A	≤15/30
5	Thermal extension 200℃,0.2MPa,15min		Elongation under load	%	≤80
6	Thermal extension 200℃,0.2MPa,15min		Permanent deformation rate after cooling	%	≤5
7	Gel content			%	≥80
8	Volume resistivity,20℃			Ω.cm	≥1.0×1014
	Density			g/cm3	0.921±0.003
9	50Hz、20℃	Relative dielectric constant		/	≤2.35
9	50Hz、20℃	Dielectric loss factor		/	≤0.001
10	Dielectric strength			MV/m	≥25

Application process reference

Region1	Region2	Region3	Region4	Region5	Region6	Region7	Region8	Neck of the machine	Nose of the machine
85℃	105℃	108℃	110℃	112℃	113℃	113℃	113℃	115℃	114℃

Packaging and storage

The product is packed in a waterproof and dustproof PE inner bag, with a hard corrugated carton for shaping and protection, and an additional waterproof film cover. The standard net weight of each box is 500kg or 600kg.

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

3. The stacking height should not exceed two layers, and the upper and lower layers should be neatly stacked. It is not advisable to stack them in a staggered manner.

The validity period is 6 months under suitable storage conditions.