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Thermoplastic peelable semiconductive shielding material for polypropylene insulated cable insulatio

This product is mainly applicable to the insulation shielding of medium-voltage polypropylene insulated cables. It is made of polypropylene as the carrier, with the addition of antioxidants, lubricants, high-quality conductive carbon black and other materials, and is produced through mixing, plasticizing and granulation. Compared with traditional products, polypropylene shielding materials do not require cross-linking during use, which can effectively reduce production energy consumption, improve production efficiency, and significantly reduce pollution emissions.

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Product details

Product model and name:

PP-B Thermoplastic peelable semiconductive shielding material for polypropylene insulated cable insulation

Performance indicators (typical values)： enforce standardsT/SHPTA 014.2-2021

Serial number	Test project		Unit	Standard	PP-B
1	Density		g/cm3	≤1.15	1.10
2	Tensile strength		MPa	≥10	13.5
3	Elongation at break		%	≥200	420
4	Air thermal aging	Test conditions	/	135℃×240h
		Rate of change of tensile strength	%	±40	+12
		Rate of change in elongation at break	%	±40	-25
5	Thermal deformation test	Test conditions	/	120±2℃/1h
5	Thermal deformation test	Deformation rate	%	≤40	31
6	Low-temperature impact embrittlement temperature		-25℃	≤15/30	0/30
7	Volume resistivity at 20℃		Ω.cm	≤100	38
8	Volume resistivity at 105℃		Ω.cm	≤2500	280
9	Volume resistivity after air thermal aging	Test conditions	/	115℃×168h
9	Volume resistivity after air thermal aging	Volume resistivity at 105℃	Ω.cm	≤2500	390
10	Peel strength		N/cm	10~60	23
11	Peel strength after aging	Test conditions	/	115℃×168h
11	Peel strength after aging	Peel strength	N/cm	10~60	25
12	The oxidation induction time at 200℃ shall not be less than 30 minutes		/	Through	Through

Application process reference

It is recommended that the temperature of the extruder body be between 100℃ and 150℃. Neck temperature: 160℃ - 170℃ Die head temperature: 180℃ to 200℃ (This temperature is for reference only. It can be adjusted appropriately according to the plasticization of the material and the current of the extruder).

Packaging and storage

1) The product is packed in a waterproof and dustproof PE inner bag, supplemented by 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.

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 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.

4) The validity period is 6 months under suitable storage conditions.