Item	Content
Model	GH
Product Type	Black High-Density Polyethylene Cable Sheathing Compound
Material Type	HDPE / High-Density Polyethylene
Standard / Grade	GB/T 15065-2009 Black HDPE Cable Sheathing Material
Application	Cable Outer Sheath / Protective Jacket
Key Features	High Tensile Strength • ESCR >500 h • Carbon Black Protection • Electrical Insulation
Processing	Thermoplastic PE Extrusion
Color	Black

Product Overview

GH is a black high-density polyethylene (HDPE) sheathing compound developed for cable outer jackets. It meets the requirements for black high-density polyethylene cable sheathing material specified in GB/T 15065-2009.

This black polyethylene cable jacket compound combines environmental stress crack resistance above 500 hours with 2.55% carbon black and Grade 1 carbon black dispersion. It can be used as an HDPE cable sheath material, PE cable outer jacket compound, black polyethylene protective sheathing material and thermoplastic polyolefin cable jacket for cable constructions requiring mechanical protection, low-temperature performance and electrical insulation properties.

Key Features

GB/T 15065-2009 Black HDPE Cable Sheath Material
High-Density Polyethylene (HDPE) Jacket Compound
65% Typical Elongation at Break
Environmental Stress Cracking Resistance >500 h
2.55% Carbon Black Content
Grade 1 Carbon Black Dispersion
High Electrical Resistivity & Dielectric Performance

Technical Data Sheet

Test Item	GH	Test Method
Density, g/cm³	0.955	ISO 1183-1
Melt Index, g/10min	0.7	GB/T 2951.41
Tensile Strength, MPa	29.7	IEC 60811-1-1
Elongation at Break, %	65	IEC 60811-1-1
Low-Temperature Elongation, %	45	GB/T 2951.14
Low-Temperature Impact Brittleness @ -76°C, failures	0/10	GB/T 5470
Environmental Stress Cracking Resistance F0, h	>500	GB/T 2951.41
Oxidation Induction Time @ 200°C, min	80	GB/T 2951.42
Carbon Black Content, %	2.55	GB/T 2951.41
Carbon Black Dispersion, Grade	1	GB/T 18251
Dielectric Strength, MV/m	32.5	GB/T 1408
Volume Resistivity, Ω·m	4.5×10¹⁴	GB/T 1410
Dielectric Constant	2.43	GB/T 1409

Recommended Extrusion Process Temperature

Zone	Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Neck	Head	Mould
Temperature	150°C	170°C	185°C	195°C	200°C	200°C	200°C	200°C

GH should be processed on PE extrusion equipment. The following temperature profile is recommended as a starting point for cable sheathing extrusion.

Adjust the extrusion conditions according to cable structure, equipment configuration, screw design and actual melt condition.

For special extrusion equipment or cable jacket structures, please contact our technical team for processing guidance.

Final processing parameters should be confirmed through production trials under the customer's actual extrusion conditions.

Cable Sheathing Material Comparison

Property	GH HDPE	LDH LLDPE	PVC Cable Sheath
Polymer Type	High-Density Polyethylene	Linear Low-Density Polyethylene	Polyvinyl Chloride
Density	0.955 g/cm³	0.935 g/cm³	Depends on Grade
Tensile Strength	29.7 MPa	28.5 MPa	Depends on Grade
Elongation at Break	65%	800%	Depends on Grade
ESCR F0	>500 h	>500 h	Different Test System
Carbon Black Content	2.55%	2.55%	Not Directly Comparable
Typical Positioning	Dense Black PE Protective Cable Jacket	Flexible Black PE Cable Jacket	PVC Cable Jacket by Grade

OEM & Customization

Customized Formulations
OEM Manufacturing
Color Matching
Technical Support
Small Batch
Fast Sampling
Free Samples

FAQ

1. What is Black HDPE Cable Sheathing Compound-GH?

GH is a black high-density polyethylene (HDPE) sheathing compound for cable outer jackets and meets the black HDPE cable sheathing material requirements of GB/T 15065-2009.

2. Which standard does GH meet?

GH meets GB/T 15065-2009 requirements for black high-density polyethylene cable sheathing material.

3. Is GH an insulation or sheathing compound?

GH is a cable sheathing / outer jacket compound rather than an insulation compound.

4. What is the difference between GH and LDH?

GH is a high-density polyethylene (HDPE) sheath grade with a density of 0.955 g/cm³, while LDH is a linear low-density polyethylene (LLDPE) sheath grade with a density of 0.935 g/cm³. Their mechanical profiles also differ, so selection should follow the required cable construction.

5. What mechanical properties does GH provide?

The supplied technical data lists 29.7 MPa tensile strength and 65% elongation at break.

6. What environmental stress cracking performance is reported?

The environmental stress cracking resistance F0 is greater than 500 hours.

7. What carbon black performance is specified?

The supplied data lists 2.55% carbon black content and Grade 1 carbon black dispersion.

8. What is the recommended extrusion temperature profile?

Zone 1: 150°C; Zone 2: 170°C; Zone 3: 185°C; Zone 4: 195°C; Zone 5: 200°C; Neck: 200°C; Head: 200°C; Mould: 200°C.

9. Does GH require irradiation or chemical cross-linking?

No. GH is a thermoplastic HDPE cable sheathing compound designed for PE extrusion.

10. Can customized formulations and samples be provided?

Yes. Formulation support, technical guidance and samples can be discussed according to the customer's cable sheathing application.

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