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Water-resistant insulating material for 35kV cross-linked polyethylene cables YJ-35-TR

This product is mainly made of low-density polyethylene resin, supplemented by functional masterbatches, etc., and is produced through mixing, plasticizing and granulation. It features excellent electrical and physical properties, can slow down the formation rate of water trees in high molecular materials during the use of terminal products, and extend the operational life of terminal products. It is mainly suitable for 35kV and cross-linked polyethylene water-resistant insulated cables.

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Product details

Performance indicators (typical values)： enforce standards：Q/THC 004-2018

Serial number	Project		Unit	Typical value
1	Tensile strength Minimum value		MPa	17.0
2	Elongation at break Minimum value		%	420
3	Air thermal aging（135±2℃，168h）	Rate of change of tensile strength Not more than	%	±20
3	Air thermal aging（135±2℃，168h）	Rate of change in elongation at break Not more than	%	±20
4	Thermal extension（200±3℃，0.2MPa,15min）	Maximum elongation under load	%	80
4	Thermal extension（200±3℃，0.2MPa,15min）	The maximum permanent deformation rate after cooling	%	5
5	Volume resistivity（20℃） Minimum value		Ω·m	1×1014
6	Dielectric strength Minimum value		MV/m	35
7	Dielectric loss factor Maximum value			5×10-4
8	Impact embrittlement temperature	Test temperature	℃	-76
8	Impact embrittlement temperature	Impact embrittlement performance Maximum value	Number of failures	15/30
9	0.1mol/L, 15-day accelerated water tree test	Water tree length Maximum value	mm	0.30
9	0.1mol/L, 15-day accelerated water tree test	Relative length of the water tree Maximum value	mm	0.6
Serial number	Project		Unit	Typical value

Application process reference

Region1	Region2	Region3	Region4	Region5	Region6	Region7	Quickly clamp and guide the adhesive	Nose of the machine
102	113	115	115	115	116	116	116	115-120

It is recommended that the temperature of the extruder body be 102℃ - 116℃. Quick clamping and adhesive guiding temperature: 116℃ Head temperature: 115℃ - 120℃ Adjust within ±3℃ of the actual equipment temperature at the customer's site.

The above temperatures are suitable for domestic equipment. For imported equipment, they need to be reset.

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.