Anti-Oxidation Semi-Conductive Shielding Pellets for XLPE Insulated Power Cables

Anti-Oxidation Semi-Conductive Shielding Pellets for XLPE Insulated Power Cables

Unit Price	US$1.00/kg
Min. Order	1,000 kg
Delivery Time	Within 15 days after payment
Location	China
Valid Until	Long-term Effective
Last Updated	2026-11-08 06:22

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Detailed Description

Product Description

High-Performance Semi-Conductive Shielding Compound for Reliable Power Cable Manufacturing

For cable manufacturers worldwide, achieving consistent electrical performance and interface stability in medium voltage cables is a critical challenge. Variations in semi-conductive shielding materials can lead to partial discharge, premature failure, and costly recalls. Hubei Kepuda Polymer Materials Co., Ltd. addresses this core pain point with our High-Performance Semi-Conductive Shielding Compound. Engineered specifically for power cables up to 35kV, this product utilizes a polypropylene matrix and premium conductive carbon black to deliver exceptional volume resistivity, superior carbon black dispersion, and perfect compatibility with XLPE insulation. As a listed company and national "specialized and new little giant," Kepuda guarantees unmatched batch-to-batch consistency and supply chain reliability.

Strong Anti-Tracking Property

Excellent ESCR Performance

Wide Temperature Adaptability

Targeted development for high voltage adjacent ADSS overhead cable, restrain surface tracking discharge, reduce cable failure risk in power crossing engineering.

High resistance to environmental stress cracking, adapt to long-term outdoor exposed laying, avoid sheath crack caused by external stress and temperature alternation.

Pass -76℃ low temperature brittleness test; stable physical property under high temperature sunshine environment, suitable for global complex climate conditions.

Stable Processing Performance

Professional Customization Service

Cost-Effective Import Substitute

Uniform plastic pellets, consistent melt index among batches. Less extrusion defects, smooth cable surface, reduce production waste rate for cable manufacturers.

Support color adjustment, formula modification. We can adjust tensile strength, elongation, melt flow rate to match your optical cable design standards.

Comparable performance with international famous brand polyethylene sheath material, help cable manufacturers reduce raw material procurement cost.

Application Scenarios

Overhead ADSS fiber optic communication cable outer sheath
Long-distance outdoor communication optical Power grid crossing communication optical cable
Outdoor aerial laying optical cable engineering

Technical Parameter Table

We supply complete polyethylene sheath compound series including KPM0801-I, KPM0801-II, KPH0802, KPH0802-I, KPL0803.
Main technical indicators cover density, melt index, tensile strength, elongation at break, low temperature brittleness, ESCR, carbon black content, OIT, dielectric property.
All index can be provided in formal test report for your cable type approval certification.

Grade Selection Guide

We provide three series polyethylene sheath material for different ADSS cable design demands:

MDPE Series (KPM0801)

HDPE Series (KPH0802)

LLDPE Series (KPL0803)

Medium density polyethylene compound, balanced tensile strength & flexibility, most widely used standard grade for common ADSS optical cable.

High density polyethylene compound, higher rigidity, outstanding ESCR performance, suitable for long-span overhead optical cable.

Linear low density polyethylene, excellent flexibility and low temperature resistance, preferred for cold region projects.

If you do not confirm which grade fits your cable, send us your optical cable drawing and technical requirement, our engineer will recommend the most suitable formula.

Property	Unit	Typical value
		KPM0801-I	KPM0801-II	KPH0802	KPH0802-I	KPL0803
Density	g/cm³	0.942	0.951	0.96	0.955	0.94
Melting Index (190℃)	g/10min	0.7	0.7	0.5	0.5	0.9
Tensile Strength	MPa	21	17	22	23	16
Elongation at break	%	750	650	750		650
Brittle temperature (-76℃)	-	PASS	PASS	PASS	PASS	PASS
ESCR	h	500	500	500	1000	1000
Carbon black content	%	2.6	2.6	2.6	2.6	2.6
Dispersity of carbon black	grade	2.5	2.5	2.5	2.5	2.5
OIT at 200℃	min	45	40	45	45	45
Dielectric strength	MV/m	26	26	26	26	26
Volume resistivity at 20℃	Ω·m
Dielectric constant	—	2.3	2.2	2.3	2.3	2.3

Recommended Extrusion Temperature

Package Specification

Storage Notice

MDPE: 160~235℃
HDPE:160~235℃
LLDPE:140~220℃

25kg paper-plastic composite bag / 500kg-750kg jumbo bag

Store in cool, dry and ventilated warehouse, avoid direct sunlight and rain. Dry at 60~80℃ for 1-2 hours if materials get damp before extrusion.

Company Strength

Hubei Kepuda Polymer Material Co., Ltd.
Professional manufacturer of cable polymer compounds, focus on XLPE, PVC, TPU, Nylon, PE sheath raw materials for wire & cable industry.
We own complete production workshop, professional laboratory and strict quality control system. All products pass continuous sampling inspection before delivery.
We cooperate with optical cable, power cable manufacturers worldwide. Besides standard grades, we provide long-term ODM customized formula service to solve various raw material difficulties for cable enterprises.
Welcome global buyers to contact us for samples, technical discussion and bulk order negotiation.

Long-lasting, weather-resistant and anti-ageing

Featuring a built-in composite UV-resistant and anti-oxidant formulation, it protects against ageing damage caused by prolonged exposure to sunlight and alternating day-night temperature fluctuations, effectively preventing the sheath from cracking or chalking, and ensuring a long and stable service life for optical cables in outdoor environments. It is the material of choice for the sheaths of overhead optical cables.

Low-temperature resistance and resistance to stress cracking

HDPE grades offer high rigidity, compressive strength and wear resistance; MDPE grades exhibit outstanding low-temperature toughness. The material as a whole demonstrates excellent resistance to environmental stress cracking; it is not prone to brittle fracture at low temperatures and can withstand dragging during installation, soil compression and external impacts, thereby reducing the likelihood of damage to optical cables during operation.

Excellent high-speed extrusion processability

The particles are uniform in size, the melt flow is stable, and extrusion is smooth and continuous; the surface of the moulded sheath is smooth, with no pores or pitting defects. It offers a wide processing window, is resistant to carbon build-up and strand breakage, and is compatible with high-speed optical fibre cable extrusion lines, thereby enhancing cable production efficiency and the aesthetic quality of the finished product.

Moisture-resistant and chemically resistant

The material offers excellent resistance to acids and alkalis, soil microorganisms and oil contamination, and has a low water vapour permeability coefficient, effectively preventing moisture from penetrating the cable core; it is suitable for direct burial and duct-laid optical cable applications, preventing signal attenuation caused by moisture ingress into the optical fibres and ensuring stable communication transmission.