Dielectric-grade kaolin for cable & wire manufacturing
Sree Sai Mineral Industries supplies calcined kaolin clay processed as a dielectric filler for insulation and jacketing compounds used in PVC and XLPE cable manufacturing.
Our controlled particle sizing and low-iron chemistry improve electrical insulation resistance and reduce conductivity and moisture pickup, backed by an in-house quality laboratory and a Certificate of Analysis with every batch.
Where our kaolin is used
PVC Cable Insulation & Sheathing
- Low-Voltage PVC Cables
- Flexible Wiring Cables
- Cable Sheathing Compounds
- Building & House Wiring Cables
XLPE & Rubber Cable Compounds
- XLPE Power Cables
- Medium & High-Voltage Cables
- Rubber-Insulated Cables
- Cross-Linked Jacketing
Wire Enamel & Coating Fillers
- Enamelled Winding Wires
- Insulation Varnish Fillers
- Magnet Wire Coatings
- Speciality Wire Coatings
The role our kaolin plays in your cable compound
Dielectric Strength
Improves electrical insulation resistance in PVC and XLPE compounds.
Low Moisture Pickup
Reduces conductivity and moisture absorption for stable long-term performance.
Dimensional Stability
Reduced shrinkage and consistent extrusion during high-speed cable manufacturing.
Consistent Batch Purity
Low-iron chemistry verified batch-to-batch in our in-house QC lab.
Sree Sai CableGuard Calcined Kaolin
Sree Sai CableGuard is a calcined kaolin developed as a dielectric filler for PVC and XLPE cable insulation and jacketing compounds. Its low conductivity and controlled particle size improve electrical insulation resistance while supporting smooth extrusion and consistent compound rheology.
Chemical Composition (Typical)
| Parameter | Typical Value |
|---|---|
| Silicon Dioxide (SiO₂) | 50–53% |
| Aluminium Oxide (Al₂O₃) | 42–45% |
| Iron Oxide (Fe₂O₃) | ≤ 0.35% |
| Titanium Dioxide (TiO₂) | ≤ 0.50% |
| Loss on Ignition (LOI) | 1–2% |
Physical Properties (Typical)
| Property | Typical Value |
|---|---|
| Brightness | 88–92% |
| Moisture | < 0.5% |
| Median Particle Size (D50) | 2.5–4.5 µm |
| Oil Absorption | 38–42 g/100g |
| Specific Gravity | 2.5–2.6 |
Product Advantages
Five grades — from PVC cable to high-voltage compounds
| Product Grade | Brightness (%) | D50 (µm) | Fe₂O₃ (%) | Moisture (%) | Primary Application |
|---|---|---|---|---|---|
| SS-CW 100 | 86–88 | 5–6 | ≤ 0.70 | < 1.0 | PVC Cable Insulation |
| SS-CW 200 | 88–89 | 4–5 | ≤ 0.55 | < 0.8 | Flexible Wiring Cables |
| SS-CW 300 | 89–90 | 3.5–4 | ≤ 0.45 | < 0.7 | Cable Sheathing Compounds |
| SS-CW 400 | 90–91 | 3–3.5 | ≤ 0.35 | < 0.5 | XLPE / Rubber Compounds |
| SS-CW 500 | 91–92 | 2.5–3 | ≤ 0.25 | < 0.5 | High-Voltage Cable Compounds |
* Typical values provided for guidance only. Custom grades can be developed to meet specific process and product requirements.
