Item	Content
Model	LDH
Product Type	Black Linear Low-Density Polyethylene Cable Sheathing Compound
Material Type	Black LLDPE / Polyethylene Cable Jacket Compound
Standard / Grade	GB/T 15065-2009 • Black Linear Low-Density Polyethylene Sheathing Material
Application	Cable Outer Sheath / Protective Jacket
Key Features	High Elongation • ESCR >500 h • Carbon Black 2.55% • Grade 1 Dispersion • Electrical Insulation
Processing	Thermoplastic PE Extrusion • No Cross-Linking Required
Color	Black

Product Overview

LDH is a black linear low-density polyethylene cable sheathing compound designed to meet the requirements for black LLDPE cable jacket material in GB/T 15065-2009. With a typical density of 0.935 g/cm³, tensile strength of 28.5 MPa and elongation at break of 800%, it is formulated for protective polyethylene outer sheaths where flexibility, toughness and reliable cable-jacket performance are required.

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 LLDPE 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 LLDPE Cable Sheath Material
Linear Low-Density Polyethylene (LLDPE) Jacket Compound
800% 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	LDH
Density, g/cm³	0.935
Melt Index, g/10min	0.3
Tensile Strength, MPa	28.5
Elongation at Break, %	800
Low-Temperature Elongation, %	45
Low-Temperature Impact Brittleness @ -76°C	0/10
Environmental Stress Cracking F0, h	>500
Oxidation Induction Time @ 200°C, min	80
Carbon Black Content, %	2.55
Carbon Black Dispersion, Grade	1
Dielectric Strength, MV/m	33.5
Volume Resistivity, Ω·m	6.1×10¹⁴
Dielectric Constant	2.45

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

LDH 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	LDH LLDPE Sheath	GH HDPE Sheath	PVC Cable Sheath
Polymer Type	Linear Low-Density Polyethylene	High-Density Polyethylene	Polyvinyl Chloride
Density	0.935 g/cm³	0.955 g/cm³	Depends on Formulation
Typical Elongation	800%	65%	Depends on Grade
Cable Layer	Outer Sheath / Jacket	Outer Sheath / Jacket	Outer Sheath / Jacket
Processing Route	Thermoplastic PE Extrusion	Thermoplastic PE Extrusion	Thermoplastic PVC Extrusion
Typical Selection Focus	Flexible LLDPE Protective Jacket	Higher-Density PE Protective Jacket	PVC Jacket Applications by Grade

OEM & Customization

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

FAQ

1. What is Black LLDPE Cable Sheathing Compound-LDH?

LDH is a black linear low-density polyethylene (LLDPE) sheathing compound for cable outer jackets.

2. Which standard does LDH meet?

LDH is designed to meet the black linear low-density polyethylene cable sheathing material requirements of GB/T 15065-2009.

3. Is LDH an insulation or sheathing compound?

LDH is a cable sheathing / outer jacket compound used as the protective polyethylene layer of cable constructions.

4. What is the difference between LDH and GH?

LDH is a black linear low-density polyethylene sheathing grade, while GH is the corresponding black high-density polyethylene sheathing grade. The supplied typical data lists densities of 0.935 g/cm³ for LDH and 0.955 g/cm³ for GH.

5. What mechanical properties does LDH provide?

Typical values are 28.5 MPa tensile strength and 800% elongation at break.

6. What environmental stress cracking performance is reported?

The typical environmental stress cracking F0 value is greater than 500 hours.

7. What carbon black performance is specified?

The typical carbon black content is 2.55%, with carbon black dispersion rated Grade 1.

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 LDH require irradiation or chemical cross-linking?

No. LDH is a thermoplastic polyethylene cable sheathing compound and is processed by PE extrusion.

10. Can customized formulations and samples be provided?

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

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