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Thermoplastic semiconductive shielding material for polypropylene insulated cable conductors PP-D

This product is mainly applicable to the conductor shielding of medium and low 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.

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Product details

Product model and name：

PP-D Thermoplastic semiconductive shielding material for polypropylene insulated cable conductors

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

Serial number	Test project		Unit	Standard	PP-D
1	Density		g/cm3	≤1.15	1.05
2	Tensile strength		MPa	≥10	18.7
3	Elongation at break		%	≥200	381
4	Air thermal aging	Test conditions	/	135℃×240h
		Rate of change of tensile strength	%	±40	+8
		Rate of change in elongation at break	%	±40	-30
5	Thermal deformation test	Test conditions	/	130±2℃/1h
5	Thermal deformation test	Deformation rate	%	≤40	25
6	Low-temperature impact embrittlement temperature		-25℃	≤15/30	0/30
7	Volume resistivity at 20℃		Ω.cm	≤100	35
8	Volume resistivity at 105℃		Ω.cm	≤5000	380
9	Volume resistivity after air thermal aging	Test conditions	/	115℃×168h
9	Volume resistivity after air thermal aging	Volume resistivity at 105℃	Ω.cm	≤5000	490
10	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 120℃ and 160℃. Neck temperature: 160℃ - 170℃ Head temperature: 170℃ to 180℃.

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.