PoleStar® For electrical insulation in low-to-medium voltage cables and improved processing
- High stability and purity
- High insulating properties
- Low moisture pick-up
- Excellent processability
- Low compression set
Imerys PoleStar® is a high purity fully calcined kaolin. It is calcined at above 1000°C to give a particle shape and morphology that is suited to a wide range of rubber applications.
PoleStar® is particularly suitable for EPDM cable insulation and light colored extruded rubber profiles.
Wire & Cable
PoleStar® provides excellent insulation properties in low and medium voltage power cables. Due to its low moisture pick-up, it is an excellent choice for guaranteeing insulation properties under wet operating conditions.
PoleStar® also improves compression set, making it suitable for the production of rubber cable sheathing of flexible cable.
Used in partial replacement of ATH or MDH in halogen-free cables, it provides superior flame retardancy, abrasion and oil resistance while maintaining good electrical properties.
EPDM extrusion
PoleStar® is a valuable processing aid for extruded and calendered rubber where it provides a smooth finish and excellent dimensional control due to the low die swell.
PoleStar™ is recommended for:
- Wire and cable
- EPDM/EPR extruded profiles
- Pharmaceutical rubber
We offer a full range of custom formulation and technical and process support services to help you match the right mineral grade to your application requirement.