Heatecx Limited
MG-IC series magnesium oxide powder is a high-performance inorganic insulating material, specifically designed for the manufacturing of fire-resistant electrical cables and mineral insulated (MI) cables. Thanks to its extraordinary thermal stability, it is the critical component to ensure circuit integrity under extreme fire conditions.
MG-IC compound is a high-purity, electrofused granular material designed to act as the primary dielectric in metal-sheathed copper cables (BTTZ Cables). This powder stands out for its ability to withstand continuous operating temperatures of 250°C and thermal peaks of up to 1000°C for 30 minutes without losing its insulating properties. It is an essential component for complying with international fire safety regulations in critical infrastructures.
Optimize the manufacturing of your fire-resistant cables with our MG-IC magnesium oxide powder. This mineral insulator not only offers an insurmountable thermal barrier but also provides excellent thermal conductivity for heat dissipation and superior mechanical strength. Its chemical composition prevents internal corrosion of copper conductors, extending the lifespan of wiring in demanding industrial environments.
MG-IC series MgO powder is the gold standard for:
• MI Cable Manufacturing (Mineral Insulated): Essential in BTTZ type cables, widely used in emergency systems.
• Fire Safety Systems: Wiring for alarms, smoke extractors, and water pumps in high-rise buildings.
• Railway and Tunnel Industry: High-security insulation for high-speed trains and underground stations.
• Petrochemical and Steel Plants: Where resistance to extreme temperatures and explosion protection are required.
• Industrial Heaters: As a filling material in high-load heating elements.
• Extreme Fire Resistance: Incombustible material that does not propagate flames or emit toxic gases (Zero Halogen).
• High Load Capacity: Allows cables to operate with higher current densities compared to conventional plastic insulators.
• Anti-Explosion Properties: The density of the compacted powder prevents the passage of flammable gases and vapors through the cable's interior.
• Centennial Durability: Resistant to aging, radiation, and corrosion; estimated lifespan exceeds 100 years.
• Environmental Protection: Non-toxic and safe product to handle under standard safety recommendations.
Chemical Analysis (Composition by weight %)
|
Model |
MgO |
CaO |
Al₂O₃ |
Fe₂O₃ |
SiO₂ |
L.O.I (Loss on Ignition) |
|
MG-IC9 |
≥99.2 |
≤0.3 |
≤0.1 |
≤0.2 |
≤0.5 |
≤0.1 |
|
MG-IC6 |
≥95.0 |
≤1.5 |
≤1.0 |
≤0.5 |
≤2.0 |
≤0.2 |
|
MG-IC5 |
≥94.0 |
≤2.5 |
≤1.0 |
≤0.6 |
≤2.5 |
≤0.3 |
Sieve Analysis (Grain Distribution)
|
Mesh (mesh) |
+40 |
+60 |
+80 |
+140 |
+200 |
+325 |
-325 |
|
Size (μm) |
+425 |
+250 |
+180 |
+106 |
+75 |
+45 |
-45 |
|
Retained (%) |
≤0 |
10±10 |
25±10 |
25±10 |
12±5 |
11±10 |
5±5 |
Physical Flow Properties
• Tap Density: 2.10−2.40g/cm³
• Bulk Density: ≥2.0g/cm³
• Flow Time: 40±6s/100g
• Flow Rate: 180±20g/100g
Electrical Performance (Breakdown Voltage)
|
Powder Model |
Test Voltage |
Normal Condition |
400°C |
600°C |
800°C |
1000°C |
1200°C |
|
MG-IC9 (High Purity) |
750V to 1500V |
Pass |
Pass |
Pass |
Pass |
Pass |
Pass |
|
2500V to 3000V |
Pass |
Pass |
Pass |
Pass |
Pass |
Breakdown |
|
|
MG-IC6 (Standard) |
750V |
Pass |
Pass |
Pass |
Pass |
Pass |
Breakdown |
|
1500V to 3000V |
Pass |
Pass |
Pass |
Pass |
Breakdown |
Breakdown |
|
|
MG-IC5 (General Purpose) |
750V |
Pass |
Pass |
Pass |
Pass |
Pass |
Breakdown |
|
1500V |
Pass |
Pass |
Pass |
Pass |
Breakdown |
Breakdown |
|
|
2500V to 3000V |
Pass |
Pass |
Pass |
Breakdown |
Breakdown |
Breakdown |
The main difference lies in the purity of MgO and its dielectric strength at extreme temperatures:
• MG-IC9: Purity ≥99.2%. Ideal for high-voltage cables and environments exceeding 1000°C.
• MG-IC6: Industrial standard grade for most BTTZ fire-resistant cable applications.
• MG-IC5: Economical option for low-voltage cables or applications where temperature peaks are moderate.
