Jiangsu Dongfang Cable Material Co., Ltd.

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Peroxide cross-linked semiconductive shielding compound for XLPE insulated cable insulation

Category:

Shielding Material

Description

Foreword

Peroxide cross-linked semi-conductive shielding material for cable insulation for medium and high voltage cables (referred to as outer shielding material) is made of EVA resin and conductive carbon black as the main raw materials. Oxygen, cross-linking agent and other processing aids are mixed, extruded and granulated.

Product name, model and purpose

Name	Model	Primary purpose
Peroxide cross-linked semi-conductive shielding compound for XLPE insulated cable insulation (Jianwai shielding compound)	PYJJ	Used for 35KV and below power cables, etc.

Performance

Typical mechanical and electrical properties

Experimental project		Units	Specifications
Experimental project		Units	PYJJ
Density		g/cm³	≤1.20
tensile strength		MPa	≥10.0
Elongation at break		%	≥200
Air heat aging test
Test conditions	Heat aging temperature	℃	135±2
Test conditions	Duration	h	168
Rate of change in tensile strength		%	±30
Rate of change in elongation at break		%	±30
Hot stretch
Test conditions	Temperature	℃	200±2
	Mechanical load	MPa	0.2
	Load time	min	15
Elongation under load		%	≤100
Permanent deformation after cooling		%	≤15
20℃ volume resistivity		Ω.cm	≤100
90℃(70℃)Volume Resistivity		Ω.cm	≤2500
Volume resistivity after air heat aging
Test conditions	Heat aging temperature	℃	100±2
Test conditions	Duration	h	168
90℃(70℃)Volume Resistivity		Ω.cm	≤500

Instructions

If the product needs to be dried before use when the product has a long storage period, it is recommended to use blast drying. It can be extruded with a single screw extruder of L/D≥25. It is better to enter the hot material into the extruder. Recommended reference The extrusion temperature is as follows:

Workspace	Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Zone 6	Zone 7	Zone 8	Head
Temperature ℃	70	80	90	100	105	105	105	105	105

Packaging, Shipping, Storage

1. The product 500Kg is a package, the inner bag is a polyethylene film bag, and the outer packaging is a rigid carton, which is placed on a wooden or plastic bracket.

2. Transportation and storage

The product shall not be exposed to sunlight and rain during transportation, and shall be kept clean, dry, free from contamination, and kept in a complete package.

The product should be stored in a clean, dry, cool and ventilated warehouse, and the storage period is 6 months from the production date.

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