SECTORS · 06

Cable: Choosing Polymers for Insulation and Sheathing

In energy, telecom and automotive cables, different polymer groups, led by PVC and PE, are preferred depending on priorities of dielectric properties, flexibility and flame retardancy.

Flexible PVCPELLDPETurkey & Global
Polymer raw materials used in cable insulation and sheathing

POLYMERS USED

Preferred Polymer Groups in Cable

In cable applications, voltage class, operating environment and regulatory requirements determine material selection.

Flexible PVC

It is the most widely used group in cable insulation thanks to its flame-retardant properties and flexibility.

  • Power cable insulation
  • Indoor installation cables
  • Automotive wiring harness
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PE

Preferred in medium- and high-voltage cables thanks to its high dielectric strength.

  • Power transmission line insulation
  • Telecom cable sheathing
  • Underground cable protection
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LLDPE

Used in outer sheaths and protective layers thanks to its high mechanical strength.

  • Cable outer sheath
  • Underground and submarine cable protection
  • Industrial cable sheathing
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SELECTION CRITERIA

Factors That Influence Polymer Selection in Cable

The right material should be chosen according to voltage class, operating environment and safety standards.

01

Flame Retardancy

Fire safety standards are a priority criterion in indoor and public-use areas.

02

Dielectric Properties

The electrical insulation performance of the material is critical for cable safety.

03

Flexibility

Bending resistance during laying and installation affects cable life.

04

UV and Moisture Resistance

An important criterion for long service life in underground and outdoor applications.

APPLICATION EXAMPLES

Areas Where Cable Polymers Are Used

Cable insulation and sheathing materials are used in a wide range, from energy to telecommunications.

  • Power transmission and distribution cables
  • Indoor installation cables
  • Telecommunications and data cables
  • Automotive wiring harnesses
  • Underground and submarine cable protection
Choosing the Right Grade

When choosing a polymer for cable, we recommend considering voltage class, operating environment (indoor, underground, outdoor) and relevant safety standards together. Contact our team for suitable products and sourcing options.

FREQUENTLY ASKED QUESTIONS

About the Cable Sector

Why is PVC preferred for cable insulation?

PVC’s natural flame-retardant property and cost efficiency make it one of the most preferred materials in cable insulation.

Which polymer is used in high-voltage cables?

Special PE grades such as cross-linked polyethylene (XLPE) are generally preferred in high-voltage cables.

What is a halogen-free grade in cable polymers?

Halogen-free flame-retardant (HFFR) grades are preferred, especially in enclosed spaces, to reduce toxic gas release during burning.

What does the price of cable polymers depend on?

Polymer type, additive package (flame retardant, UV) and market conditions are the main factors that affect price.

SOURCING FOR CABLE

Let’s find the right polymer for your cable application together.

Share your voltage class, operating environment and quantity; we’ll review suitable sourcing options for your PVC, PE or LLDPE requirement.

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